Laser Engraver Blogs

What Is an Engraving Scan Path?

The engraving scan path refers to the path settings that determine the order and method in which the laser module scans and engraves objects during processing.

Different scan path options will affect:

• Processing time
• Operation sequence

How Does It Work?

1. Whole Engraving (Single Layer Engraving)

All objects on the canvas are engraved at once without distinguishing priority or sequence.

For filled engraving objects with the same parameters:

• The laser scans from bottom to top and left to right
• The laser processes these areas sequentially within a single scan

As a result, the overall processing time is usually longer.

2. Object-by-Object Engraving (Multi-Layer Engraving)

Objects are engraved one by one according to the defined order and direction.

• The laser completes one object before moving to the next
• The movement distance between objects is shorter

As a result, the processing time is usually shorter.

3. How to Use It?

The scan path for objects with different parameters will be displayed accordingly.

Example:

(1) When engraving three filled objects on the current canvas:

• Objects with the same parameters will be grouped together
• A total of three groups will be generated (Group 1, Group 2, Group 3)
• Each group contains one object

What is “by layer"?

For complex vector graphics, using layers helps manage objects more efficiently. Vector line colors are used to define layers, and objects within the same layer share the same processing parameters.

You can easily select and move objects across layers, simplifying your design workflow.

After enabling “By Layer” in the processing settings, you only need to adjust the layer order to define the processing sequence of your design.

How Does It Work?

The processing order follows the vertical layer order, from top to bottom.

The order is not affected by layer numbering. To change the order, simply left-click and hold the layer you want to move, then drag it to your desired position.

How to Use It?

(1) Create Objects

Use the tools in the left toolbar to create objects. You can import images, insert shapes, input text, or draw vector graphics as needed.

(2) Assign Layers

Right-click the object you want to adjust, then select a layer.

(3) Arrange Layer Order

Click the layer icon at the bottom and arrange the layers as needed.
In this example, the circle is placed last, while the triangle and polygon are placed first.

(4) Preview

After completing all preprocessing steps, click the “Preview” button to enter the preview page.

On the preview page:

• Black lines represent the processing path
• The “+” icon represents the processing starting point

The machine will cut the circle first, then engrave the triangle and polygon vectors.

Tips for Better Results

• Always check the preview before processing
• Adjust layer order carefully to match your design needs
• Use consistent colors to manage layers more clearly

Over the past decade, the personalized consumer market has been growing rapidly. From customized gifts to branded merchandise, from e-commerce products to small-batch manufacturing, more small businesses are searching for production solutions that can maintain product quality while offering high flexibility.

Traditional printing processes often struggle to meet the needs of small businesses. For example, screen printing is efficient for mass production but involves high plate-making costs. Dye-sublimation printing requires specially coated materials, while heat transfer processes involve multiple production steps and additional equipment.

In comparison, UV digital printing technology has become an important solution for small-scale manufacturing and product customization. As the technology has matured, Desktop UV Printers have entered the consumer-level price range, enabling small businesses to establish their own customize production capabilities at a relatively low cost.

This article will analyze from the technical features, application range, and commercial value of UV printing to explain why UV printers are becoming an essential production tool for small businesses.

1. Instant UV Curing Technology Greatly Improves Production Efficiency

One of the important technological advantages of UV printing is UV curing. UV inks contain photoinitiators that react when exposed to ultraviolet light. During the printing process, UV LED lamps cure the ink instantly as it is deposited onto the substrate surface. This triggers rapid polymerization, transforming the liquid ink into a solid layer almost immediately.

In traditional printing processes, inks typically require natural drying or heat treatment to cure. This not only takes time but also slows down the overall production process. UV printing uses ultraviolet light to trigger a polymerization reaction the moment the ink is deposited onto the material surface, enabling instant curing.

This technology offers several key advantages:

● No drying time: prints are ready immediately after printing

● Simplified workflow: no additional drying racks or heat-curing equipment

● Faster production cycles: ideal for rapid order fulfillment

For small studios operating a Desktop UV Printer, this efficiency allows the entire workflow to take place within a compact workspace. In e-commerce environments where order turnaround speed is crucial, this capability can significantly improve productivity and customer satisfaction.

2. Broad Material Compatibility Expands Product Possibilities

Another major advantage of UV printing technology is its excellent substrate compatibility. Traditional printing processes often depend on specific materials or surface treatments. For example:

● Dye sublimation requires polyester-coated materials

● Screen printing requires different ink systems for different substrates

● Heat transfer printing relies on transfer films and heat presses

UV printing, however, can print directly onto a wide range of materials without requiring special coatings, including:

Common rigid materials:

● Acrylic

● Metal

● Glass

● Wood

● Plastic

Flexible or specialty materials:

● Leather

● PVC

● Rubber products

More importantly, UV printing can achieve high-quality results even on dark or transparent materials, thanks to the use of white ink as a base layer.

This allows a single Desktop UV Printer to support multiple product categories, such as:

● Customized phone cases

● Acrylic keychains

● Wooden decorative items

● Metal nameplates

● Creative merchandise

● Branded promotional products

For small businesses, this means one machine can support multiple product lines, greatly expanding business possibilities.

3. White Ink and Varnish Technology Create High-Value Products

Modern UV printers typically support multi-channel ink systems, commonly including CMYK + White Ink + Clear Varnish.

● White Ink

Used as a base layer when printing on transparent or dark materials, allowing colored graphics to appear vivid and accurate.

● Clear Varnish

Can be printed in multiple layers to create raised textures on the printed surface. This technique produces a 3D embossed effect that adds both visual depth and tactile feedback.

This tactile effect not only enhances visual depth but also significantly improves the perceived quality of products. Examples include:

● Textured phone cases

● Embossed acrylic signage

● Decorative plaques

● Artistic display panels

In the customization market, products with tactile, raised printing often command higher price premiums.

4. Perfect for Small-Batch and Personalized Production

Unlike traditional printing technologies, UV printing is a fully digital manufacturing process. This means:

● No plate-making required

● No complex setup process

● Each design can be printed individually

As a result, UV printing is particularly well-suited for modern business models such as:

● Personalized customization

Products such as name gifts, personalized phone cases, and commemorative souvenirs.

● Small-batch production

Limited edition products, designer collections, or trial market launches.

● On-demand manufacturing

Products are produced only when orders are received, reducing inventory pressure and financial risk.

This production model aligns perfectly with modern e-commerce platforms such as Etsy stores and Shopify-based businesses.

5. Integration with the 3D Printing Ecosystem

With the rise of the maker culture, 3D printing has become a popular manufacturing tool among creators and small businesses. However, decorating the surface of 3D printed objects can still be challenging.

Many makers still rely on:

● Hand painting

● Manual logo application

● Adhesive labels or stickers

These methods are often time-consuming and inconsistent. UV printing offers a more efficient solution by allowing high-resolution graphics to be printed directly onto finished 3D printed parts. This enables creators to:

● Fast branding and logo application

● Apply detailed graphic designs

● Produce professional product prototypes

For 3D printing entrepreneurs, UV printing serves as an efficient post-processing solution that improves both production speed and product quality.

6. Continuous Technological Development Expands UV Printing Capabilities

UV printing technology continues to evolve, bringing significant improvements in both printing performance and system functionality.

Earlier desktop machines were typically built with single printhead configurations. Today, more advanced machines have adopted Dual-head UV Printer architectures, which significantly increase printing speed and improve efficiency when printing multiple ink layers. This development is particularly important for applications involving white ink and varnish, where multiple passes are required to build up thickness. Dual-head configurations make it easier to produce more realistic 3D embossed textures. For example, Longer recently introduced the world’s first dual-head desktop UV printer, the ePrint.

At the same time, the ecosystem of UV printing accessories has expanded, allowing a single machine to support a wider range of applications:

● Roll-to-roll modules: for flexible materials like labels and decorative films

● Rotary attachments: for batch printing on cylindrical objects such as cups and tumblers

● Lamination equipment: used with UV DTF processes to create transfer products like crystal stickers

● Conveyor belt systems: enabling continuous feeding for automated batch production

One important innovation is the development of UV DTF Printer technology. This process prints graphics onto a transfer film, which is then laminated to create durable decorative transfers often referred to as crystal stickers. These transfers can be applied to irregular surfaces where direct printing may be difficult.

These technological improvements are transforming UV printers from simple flatbed printing machines into versatile digital manufacturing tools. For small businesses, this not only improves productivity but also greatly expands product possibilities.

7. Lower Equipment Costs Reduce the Barrier to Entry

In the past, UV printing equipment was primarily designed for industrial manufacturing environments, with many machines costing over $15,000. In recent years, however, advancements in printhead technology, motion control systems, and UV LED curing systems have made compact UV printers more affordable. Today, many entry-level machines fall within the price range of: $1,000 – $3,000. Compared with traditional industrial printing equipment, these systems offer several advantages:

● Lower initial investment

● Faster return on investment

● Compact size suitable for small studios

For entrepreneurs entering the custom product market, a Desktop UV Printer provides an accessible way to establish in-house production capabilities without large capital investment.

8.  Conclusion

As demand for personalized products continues to grow, businesses increasingly require manufacturing technologies that combine flexibility, efficiency, and product quality.

UV printing technology meets these requirements through:

● Instant UV curing that accelerates production workflows

● Broad compatibility with many materials

● Premium decorative effects enabled by white ink and varnish

● Digital production processes ideal for small-batch manufacturing

With compact systems such as the Desktop UV Printer now available at consumer-level prices, UV printing is no longer limited to large industrial manufacturers. Instead, it has become an accessible production technology for creators, small studios, and entrepreneurial teams seeking to enter the custom product market.

For small businesses looking to transform creative ideas into sellable products, UV printing is more than just a printing method—it is a flexible digital manufacturing solution that enables innovation, customization, and scalable production. For those looking to combine creativity with commerce, it is becoming an efficient and practical pathway to launching a custom product business.

Longer laser engravers, such as the Longer Ray5 10W/20W Laser Engraver (the best laser engraver for beginners), the Longer Ray5 40W Laser, the Engraver Longer B1 30W/40W Laser Engraving Machine (the best laser engraver for small business), Longer Nano Pro Portable Laser Engraver ( The best laser engraver for craft fairs), allow you to create intricate works of art on a vast variety of materials. While wood is a common starting point, the versatility of these laser cutter and engraver machines extends dramatically to harder, more durable surfaces, like stone, offering a completely different aesthetic and final product.

Why Choose Stone for Laser Engraving

The material preferred by users for its natural elegance and striking contrast is usually dark slate, which can be engraved with high precision and is highly durable. Engraved slate is perfect for creating a sophisticated, timeless look, much more durable than most organic materials, particularly for items like coasters, plaques, and decorative tiles.

Cardboard can also be processed with a laser; however, great care must be taken, as it is easily flammable. In order to avoid this, it is essential to carefully set the power and speed parameters. Stone, on the other hand, presents no fire risk but requires precise parameter settings to achieve clear, sharp contrasts. The material’s density dictates a completely different approach compared to engraving wood or cardboard, focusing on achieving a bright, precise mark without fracturing the surface. The use of air assist is still highly recommended to remove fine stone dust and keep the workspace clean, allowing for faster and more accurate processing.

Getting Started: Basic Parameters for Slate

In initial tests on slate, it is good practice to start applying settings that allow for a clean, single-pass marking. This allows the laser to ablate a fine surface layer to expose a lighter shade, creating the detailed image. Supposing you want to engrave slate, the following can be considered as basic parameters, tested on a 12W Longer Nano Pro:

Speed: 6000 mm/min
Power: 50%
Steps: 1 pass

These parameters provide a fast yet efficient starting point for clear engravings. Note that different laser powers will require adjustments (e.g., using a 20W or 30W module, you may be able to significantly increase the speed or decrease the power and possibly proceed with the necessary adjustments, doing tests).

Achieving Striking Contrast and Longevity

In this way, the engravings will be carried out with striking contrast, where the dark slate reveals a light, detailed pattern. However, since the engraving is a physical removal of a surface layer, it is necessary to avoid touching the engraved areas with abrasive materials; otherwise, they will be removed and compromised. A practical solution is to apply a light, food-safe mineral oil or a clear matte coat so as to protect the result, deepen the black areas, and make the engraving more durable and permanent.

Creative Possibilities with Stone

An interesting aspect of engraving on stone is the possibility of playing with subtle variations, creating deep engravings or light surface markings. This makes stone an ideal material for experimenting with complex graphics, illustrations, or even stylized photographs, where the high resolution of Longer Laser Engravers shines. In addition, thanks to its durability, stone creations can be made for both indoor and outdoor use.

Stone engravings are used in various practical areas:

• Customization of kitchenware and personalized gifts
• Creation of stencils, architectural accents, and artistic plaques
• Commercial applications, such as high-quality branded items and detailed signs

Thanks to the precise power control, you can experiment freely until you get the desired result.

Maintenance Tips for Stone Engraving

After engraving, it is advisable to clean the countertop and laser module regularly, as stone tends to release fine, abrasive dust. A simple wipe with a damp microfiber cloth avoids accumulations that could compromise the precision of subsequent processing. The air assist filter should also be checked periodically to maintain constant airflow efficiency.

Why Stone is an Exceptional Laser Engraving Material

As far as we have seen, stone is not simply a hard material but an exceptional canvas with its own intrinsic strategic value. In fact, its convenience and easy availability (particularly slate), combined with the millimetric precision of Longer Laser Engravers, make it the ideal tool for efficiency and experimentation.

Ultimately, stone is a superb material to master using Longer Laser Engravers, since by mastering the parameters of speed and power, it is not only possible to obtain pieces with clean lines and high contrast, but it is also possible to have access to artistic creation that is sophisticated, permanent, and highly cost-effective.

This guide explains how to use the LaserBurn PC software to perform engraving with the Ray5 mini. It covers software download, device connection, file import, parameter setup, and engraving steps.

Steps

1. Software Download

First, go to the Longer official website to download the LaserBurn PC software. Install it and then open the software.

2. Device Connection

After opening the software, click "Device" to connect the machine. In the pop-up window, select the Ray5 mini image and click "Confirm". Then choose the correct port and click "Connect". When "Ray5 mini" appears in the device window, the connection is successful.

Import File and Start Engraving

Click the icon in the upper left corner and select "Import" to load the image to be engraved into the software. Then click the layer option and double-click the corresponding layer to modify the engraving parameters and confirm.

Before starting engraving, click "Reset" on the machine, then click "Engraving". Click "Border" to confirm the engraving position, and finally click "Start Engraving".

Conclusion

By following the above steps, you can successfully complete engraving with the Ray5 mini using LaserBurn PC software. Proper device connection, parameter setup, and positioning ensure accurate and efficient engraving results.

This article explains how to adjust the joint sizes in 3D design files according to material thickness, enabling accurate 3D model production on Longer Laser Engravers. By setting the correct scaling points and joint sizes in LightBurn, different material thicknesses can be easily accommodated, ensuring model integrity and assembly accuracy.

Material Dependence of 3D Models

However, unlike other types of creations, 3D models are highly dependent on the thickness of the material used. In fact, in drawing software, such as Lightburn, it is necessary to define a fixed size for the joints, but this is valid as long as the thickness of the material corresponds to that size.

However, unlike other types of creations, 3D models are highly dependent on the thickness of the material used. In fact, in drawing software, such as Lightburn, it is necessary to define a fixed size for the joints, but this is valid as long as the thickness of the material corresponds to that size.

Adjusting Joint Sizes

For example, in the image shown here, the thickness set for the joints is 4.1 mm, i.e. suitable for materials with a thickness of 4 mm.

To understand which other pieces are about the joints, you can evaluate each size identical to the previous one, in the 4.1 mm example.

At this point, suppose you want to use a material with a thickness of 5mm; then, the joints must be set to 5.1mm. To do this, avoiding deforming the 3D model, you need to set the center as the scaling point, then set 5.1 mm.

As for the other component, having a different type of joint, it is necessary to set the lower edge as the resize point, then set 5.1mm.

However, this can result in a shifting of the drawing, as shown in the figure.

In this case, it is sufficient to move the segment manually, so as to align it with the new thickness set; if necessary, add the missing parts via the LightBurn editor.

Complete Adjustment

Following this logic, all joint sizes in the drawing can be adjusted to match the new material thickness (e.g., 5 mm), producing a LightBurn file ready for the new material. This method allows any LightBurn design to be modified simply and effectively while maintaining joint and model integrity.

Processing and Assembly

Once the joint sizes are correctly set, the design can be processed on the Longer Laser Engraver via LightBurn. After processing, a quick assembly produces the final 3D model.

Conclusion

By correctly setting scaling points and joint sizes in LightBurn, users can easily adapt 3D design files to different material thicknesses, achieving precise engraving and assembly. This provides an efficient and reliable solution for producing 3D models on Longer Laser Engravers.

Finding the right settings for laser engraving or cutting can be challenging, especially with different materials. LaserBurn makes this process easier with its built-in material library. By following a few simple steps, you can quickly generate the optimal parameters for your project.

1. Access the material library

In LaserBurn, click the “Unknown” button at the top-right corner of the interface.

2. Select Your Material and Confirm

• Choose the material you want to engrave or cut.
• Click Confirm to apply the selection.

3. Generate the Parameter Matrix

After confirming the material:

• Go to the Layer page.
• Select the layer you want to set parameters for.
• Click Parameter Matrix to view the matrix effect chart.
• Choose the effect that matches your desired result.

4. Apply the Parameters Automatically

Once you select the desired effect:

• LaserBurn will automatically fill the chosen parameters into the parameter input fields.
• No manual input is needed, saving time and reducing errors.

Conclusion

If you’ve been around digital fabrication in the last few years, you’ve probably noticed something: UV printing has quietly moved from industrial shops into garages, studios, and small businesses. I’ve spent years working on UV systems at Longer, and I’ve watched this shift happen firsthand.

What used to require a full production line can now sit on a workbench. And when people ask me where to start, the first question is always the same: “What exactly is a UV printer, and how does it work in real life?” 

This guide breaks it down, based on how these machines actually behave in the field.

1. What Is a UV Printer?

A UV printer (Ultraviolet printer) is a digital inkjet system that uses UV-curable inks. Instead of drying through evaporation or absorption, the ink is instantly cured by UV LED light—usually in the 395–405 nm range. From an engineering standpoint, that “instant curing” is the entire game. You’re not waiting for solvent to flash off. You’re not relying on porous substrates. You’re building a polymer layer directly on the surface.

In practical terms:

• Print → Cure → Done (within milliseconds
• No drying rack
• No smudgin
• No production bottleneck

I’ve usually run durability tests where a printed aluminum panel went straight from the printer to a scratch test rig—no waiting. That’s something traditional printing simply can’t do.

Example output from a Desktop UV Printer

2. How UV Printing Actually Works

Step 1 – RIP Processing (Image to Machine Language)

• Every job starts in RIP software. This is where
• Color profiles are applie
• White ink layers are generate
• Varnish or texture data is defined

In development, we often tweak RIP parameters more than hardware, because bad RIP = bad print, no matter how good the machine is.

Step 2 – Piezo Inkjet Deposition

The printhead uses piezoelectric crystals to eject ink droplets in the picoliter range.

A real-world issue we dealt with: Early prototypes showed inconsistent droplet formation when switching between rigid and flexible inks. The viscosity shift affected jetting stability, so we had to recalibrate waveform control.

That’s why ink compatibility matters just as much as hardware.

Step 3 – Instant UV Curing

Right after the ink hits the surface, UV LEDs trigger polymerization. What’s happening chemically：

• Photoinitiators absorb UV energ
• Monomers crosslink into solid polymer
• Liquid → solid in milliseconds

From a production standpoint, this is why: 

You can stack prints immediately and can print on non-porous materials (glass, metal, acrylic)

Step 4 – Multi-Layer Printing (3D Texture)

This is where modern machines like the Longer ePrint really stand out.

Instead of a flat image, you can

• Stack white ink layer
• Add varnis
• Build physical height

On ePrint, we’ve tested up to 60mm texture height, which opens up:

• Braille
• Embossed logos
• Decorative relief surfaces 

How UV printing works – ink deposition and UV curing

3. Types of UV Printers

Flatbed UV Printer

A flatbed UV printer operates on a fixed platform with a moving printhead. In practice, what many people refer to as a desktop UV printer is essentially a compact flatbed system designed for specific use cases.

One of the most common misconceptions I’ve seen especially from new users is the assumption that “desktop” means lower performance. That may have been true years ago, but with current hardware and ink systems, that distinction is no longer valid.

In our lab, flatbed systems are still the first choice when precision and repeatability matter. If you’re dealing with alignment-sensitive work—like multi-layer printing, embossed textures, or fine typography—a flatbed setup is the most reliable option.

Typical materials include: acrylic, wood panels, glass and metal. Because the substrate stays fixed while the printhead moves along the X–Y axis, you get: consistent registration, high positional accuracy and stable multi-pass printing.

This makes flatbed systems ideal for:

Phone cases

Signage

Gift boxes

Flat or slightly curved objects

Desktop UV printer printing on phone cases

Roll-to-Roll UV Printer (and UV DTF Workflow)

A roll-to-roll UV printer works differently. Instead of printing directly onto rigid materials, it typically prints onto a transfer film, which is then applied to the final object.

This workflow is especially useful for: curved surfaces, irregular shapes and batch production.

In real-world usage, this approach is commonly seen in:

Canvas printing

Decorative films

UV DTF printer applications

It’s worth noting that UV DTF and traditional DTF are not the same:

UV DTF printing uses UV-curable inks printed onto a film, followed by lamination and transfer. The result is a durable, adhesive-backed graphic that can be applied to hard surfaces like glass, metal, or plastic.

DTF (Direct-to-Film) in the textile industry uses water-based inks and heat transfer powder, primarily for fabrics.

We spent a significant amount of time testing TPU film workflows, flexible UV ink must maintain strong adhesion even under mechanical stress.

During stretching or application:

If adhesion is insufficient → the ink layer cracks

If flexibility is poor → the graphic fails during transfer

This is why ink formulation is just as important as the printer itself in UV DTF workflows.

In practical terms. flatbed UV printers are best for rigid materials and high-precision work, and roll-to-roll and UV DTF printers are better for flexibility, curved surfaces, and batch applications

But if you’re looking for a system that can handle both versatility and performance, that’s where machines like the Longer ePrint stand out, becuase ePrint Dual printheads, can use for UV/ UV DTF/ DTF, even can work on the same time.

With its open ink system, dual printheads, and support for over 300 materials, ePrint isn’t limited to one workflow—it’s built to handle almost anything you throw at it.

From rigid substrates to flexible films, from flat panels to textured 3D prints, it’s as close as you get to a true “print on anything” solution in this category. 

4. Key Advantages of UV Printing Technology

4.1 Print on Almost Any Material

One of the most practical advantages of UV printing is its ability to work across an extremely wide range of materials. In our internal testing, we’ve printed successfully on anodized aluminum, unfinished wood, coated leather, and even 3D printed parts with complex surface textures. The key factor is not the material itself, but how well adhesion is managed through proper ink selection and surface preparation. Once that variable is controlled, UV printing becomes remarkably consistent across both rigid and semi-flexible substrates, making it a highly versatile solution for real-world production.

4.2 Industrial-Level Durability

When UV ink is properly cured, the resulting print forms a dense polymer layer that performs at an industrial level. In controlled testing environments, we consistently achieve scratch resistance at or above 2H, along with strong resistance to abrasion and environmental exposure. We’ve also conducted accelerated weathering tests to simulate long-term outdoor use, and the results show that UV prints can maintain color integrity and adhesion for over three years. Compared to traditional methods, the durability is not just theoretical—it holds up under real conditions.

4.3 True 3D Texture Printing

This is where modern UV printers begin to move beyond traditional printing and into surface engineering. With advanced systems like the Longer ePrint, it’s possible to build up to 60mm of embossed height through multi-layer ink stacking. By combining CMYK color layers with white ink and varnish, you can create not only visual depth but also physical texture that can be felt. This capability is especially valuable in applications like decorative panels, branding elements, and tactile graphics. At this point, the process is no longer just about printing images—it’s about constructing functional surfaces.

4.4 Fast Turnaround (Minutes, Not Days)

UV printing significantly shortens the production cycle. In a typical workflow, a design file can go from processing to finished output in just a few minutes, often within a five-minute window from start to shipment. For small businesses, this fundamentally changes how production is managed. There’s no need for inventory buildup or batch scheduling—everything can be produced on demand. This kind of responsiveness is particularly valuable in e-commerce environments where customization and speed are critical.

4.5 Eco-Friendly Production

From an environmental standpoint, UV printing is far cleaner than traditional solvent-based methods. Because the ink cures instantly under UV light, there is no solvent evaporation and virtually no volatile organic compound (VOC) emission. The use of LED curing systems also reduces energy consumption compared to heat-based drying processes. Combined with minimal material waste, this makes UV printing a more sustainable option for both small workshops and larger production environments.

5. Key Elements of UV Printing Technology

5.1 CMYKWV Ink System

Modern UV printers typically operate using a CMYKWV ink configuration, which includes cyan, magenta, yellow, and black for standard color reproduction, along with white ink and varnish. White ink plays a critical role when printing on dark or transparent materials, as it provides an opaque base layer that allows colors to remain vivid and accurate. Varnish, on the other hand, is used to create gloss effects, protective coatings, or textured finishes. Together, this expanded ink system enables a much broader range of visual and functional outputs compared to traditional four-color printing.

5.2 White Ink Circulation System

White ink contains titanium dioxide (TiO₂), a dense pigment that naturally settles over time. During early development stages, we encountered repeated clogging issues when proper circulation systems were not in place. Without continuous movement, sediment builds up quickly—sometimes within just a few hours—leading to unstable printing performance. That’s why modern machines, including the Longer ePrint, incorporate active white ink circulation and agitation systems to keep the pigment evenly distributed and ensure consistent output.

5.3 Open Ink System (Why It Matters)

One of the most practical advantages of the Longer ePrint is its open ink system. Unlike closed systems that restrict users to proprietary consumables, ePrint supports rigid, flexible, and specialty UV inks, including third-party options. For users, this translates directly into lower operating costs and greater flexibility in application. Whether you’re switching between hard substrates and flexible films or experimenting with specialty effects, an open system allows for far more control over the production process.

5.4 Why Longer ePrint Stands Out (From an Engineering Perspective)

After working with a wide range of UV systems, it’s clear that the Longer ePrint strikes a rare balance between performance, flexibility, and usability. Its dual printhead design enables output speeds up to six times faster than comparable single-head systems, while the 12-channel ink configuration ensures stable, high-volume printing. With a resolution of up to 1440 DPI, it delivers fine detail suitable for both commercial and creative applications.

What sets it apart further is its ability to produce up to 60mm of textured height, combined with a 20MP smart camera that supports automatic positioning and batch processing. The integration of a mobile app with AI-assisted workflow simplifies operation, especially for users without extensive technical experience. At the same time, support for over 300 materials makes it adaptable across a wide range of use cases.

From an engineering perspective, one of the most valuable aspects of the system is that it isn’t locked down. Users can experiment with different inks, materials, and workflows without being constrained by the machine. That level of openness is uncommon in this category and significantly expands what the printer can actually do in practice.

6. Who Should Use a UV Printer?

Ideal Users

In real-world usage, Desktop UV Printers are not limited to industrial manufacturers. They are widely used by Etsy and Shopify sellers, custom gift businesses, signage shops, artists, designers, and small-scale manufacturers. Essentially, anyone involved in product customization or short-run production can benefit from the flexibility that UV printing offers.

Home & Small Business

For home users and small businesses, UV printing offers a combination of low barrier to entry and high production capability. There is no minimum order requirement, which allows for true on-demand manufacturing. Setup costs are relatively low compared to traditional production methods, and the return on investment can be achieved quickly due to the ability to produce and sell customized products immediately.

Additionally, modern machines like the Longer ePrint are compact—typically in the 30kg range—making them suitable for small workspaces without sacrificing performance. This combination of efficiency, flexibility, and scalability is what makes UV printing such a practical tool for growing businesses today.

FAQ Frequently Asked Questions About UV Printing

What is a UV printer used for?

UV printers are used for printing on materials like glass, metal, wood, plastic, leather, and acrylic. They are widely used in customization, signage, packaging, and product decoration.

What is the difference between a desktop UV printer and a flatbed UV printer?

A desktop UV printer is a compact version of a flatbed UV printer, designed for smaller items and home or small business use, while flatbed UV printers are often larger and used in industrial environments.

What is the UV DTF?

A UV DTF designs onto transfer film, which can then be applied to curved or irregular surfaces. It is ideal for batch customization and complex shapes.

How durable is UV printing?

UV prints are highly durable, offering strong resistance to scratching, water, and UV exposure. Outdoor lifespan can exceed 3 years depending on materials and ink.

Can UV printers print on any material?

Most materials are printable, including glass, metal, acrylic, plastic, and leather. However, proper ink selection and surface preparation are important for adhesion.

Is the Longer ePrint suitable for beginners?

Yes. With its mobile app, AI-assisted workflow, and automatic positioning system, the Longer ePrint is suitable for beginners, small businesses, and even home users.

UV printing isn’t just another printing method, it’s a manufacturing tool. It removes barriers: no plates, no drying time, no material limits. And with machines like Longer ePrint, that capability is no longer limited to factories. If you’re building a small business, prototyping products, or just exploring creative production, this is one of the most practical tools you can invest in today.