Why Does UV Printer Print Out Like Stripes ?

Why My Printer Is Printing Stripes

Desktop uv inkjet printers contain complex permanent moving parts and consumable components designed for periodic replacement. When your desktop printer creates output that shows a pattern of scratches on or along the pages, you're wasting paper and supplies until you diagnose the problem. Which direction you go to troubleshoot depends on the type of output fault you are seeing and the type of desktop uv inkjet printers you are using.

UV Inkjet Flatbed Printer

Inkjet printers work by heating tiny nozzles or applying an electric current to them to change their shape, forcing the ink onto the page. When you see a gap in the output or a horizontal line across it, your printhead may have clogged nozzles. Desktop uv inkjet printers have a low tolerance for downtime, and your inkjet printer may require multiple printhead cleaning cycles to penetrate dry ink. If a defect in the output disrupts the appearance of vertical lines in the page content, your printheads may need to be realigned. Both cleaning and recalibration consume some of the installed ink, especially if your device requires deep cleaning or multiple adjustment cycles.

Laser Toner or Toner Cartridge

UV laser printer creates an entire page of content at once by transferring toner from a rotating drum onto the paper and using a heater to melt the toner. Toner cartridges are part of the toner cartridge or are installed as separate consumables. In either case, scratches on its photosensitive surface can cause streaks or lines on the output. Most ink cartridges contain a spring-loaded shutter that opens when you insert supplies into the printer. If you remove the cartridge and gently open the shutter (being careful not to touch the cartridge or anything else inside the cartridge), you may see scratches on the surface. To eliminate your supplies as the source of the problem, replace the ink cartridges and reprint the document page.

Laser Melting Unit

The toner is made from a mixture of crushed plastic and dyes. To bond it to the paper, uv laser printers use a heating element called the fuser unit, which melts the toner as the paper passes through the rollers of the fuser unit. If the toner sticks to the fuser or its roller is damaged, unexpected vertical lines may appear on the output. To diagnose lines that form a repeating pattern, you can find the repeating defect rule published by the printer manufacturer for your hardware model. This document identifies the origin of marks on the page by their position relative to the position of the rollers and other components of the printing mechanism. Some uv laser printer manufacturers provide these service guides only to technicians.

Dirty Printer

Unbound toner that gets inside a laser flatbed printer ends up on its rollers or other moving parts and transfers to your output as streaks, tracks, or lines. A number of roller marks form a unique "tire mark" pattern along each sheet of paper in the direction the sheet passes through the printer. Addressing these flaws requires a two-part approach. Finding the source of lost toner can lead to leaking ink cartridges that can gradually stain your machine, or a one-time mishap due to trying to reprint pages from another machine with a fusing temperature below the one for which the printer is used. Equipment cleaning may require a service call, depending on your level of experience and the design of the laser uv printer .

No one is immune. When your inkjet printer uv head decides to clog or cartridges are like ink witches from the land of scratches, scratches and smudges, there's no vaccine or pill to take. Even something as simple as a paper jam or an unplugged printer can cause serious headaches and the urge to throw the printer across the room. Learn how to fix desktop uv inkjet printers ink smears and other common printing issues and errors to save paper, ink, and your sanity !

As one of the uv inkjet printer suppliers in market, we want to say the best way to keep your ink cartridges, printer ink, and all other parts of your uv inkjet flatbed printer running smoothly is to learn how to troubleshoot, so you can identify common issues that plague printers. inkjet enthusiasts. With a little patience and knowledge, you can fix almost anything without buying a new printer. Most HP, Canon, Brother, and other inkjet flatbed printers have the same problem, and almost all problems are easy to identify and correct. Here are the common faults that sometimes cause streaks and streaks and some helpful troubleshooting tips to fix them.

Unexpected ink streaks, color streaks, and unwanted lines fill the printed page. Additional streaks and lines may mean that the printheads are misaligned. There is an alignment tool in the printer control panel. If this is not the problem, maybe the inkjet flatbed printers are dirty. Printer ink smears can appear on the edges of the paper, which means that there is ink on the rollers and other parts. Follow basic cleaning instructions or use a lint-free cloth to wipe the rollers and other contaminated parts.

The uv inkjet label printer prints "garbled characters". If your printer pages and pages contain strange symbols, characters, or formatting, the inkjet driver may be outdated, corrupt, or incompatible with your operating system. A common solution to "garbled" printing is to reinstall the printer driver. Colors are missing or appear to be distorted in the print. If color is a problem, you may need to use the printer's printhead cleaning tool. If that doesn't work, replace the ink cartridge. If this does not resolve the color issue, the printhead may be faulty, which means the printer needs to be repaired or replaced.

Stripes Problem Analysis of UV Flatbed Printer Printing

Cause 1: The nozzle is disconnected.

Solution: The plugging of the nozzle will cause the nozzle to be disconnected, so that the amount of water sprayed on a certain color device is insufficient during the printing process, which is manifested as burrs and blurred lines. Carefully check the status of the nozzles of desktop uv inkjet printers, which can be checked by printing a test strip. If it is found that there is blockage, the lines are not clear, and the lines are intermittent, it is necessary to clean the inside of the nozzle with cleaning fluid. There are many reasons for the blockage of the nozzle. Customers and friends can clean the nozzle 1-2 times. If it is serious, you need to use alcohol After soaking for 24 hours, clean it again to eliminate hidden dangers.

Cause 2: The distance between the nozzle and the medium is too high.

It may be that the distance between the print head and the surface of the medium is too high, so that the ink droplets cannot be ejected on the surface of the medium in a straight line, resulting in the phenomenon of ink spray. Of course, the printed image will have random spots, burrs, ghosting and other phenomena. Usually, when the nozzle is more than 8cm away from the printing material, the phenomenon of floating eggs will occur, so when printing, please check the height, if it exceeds, you need to lower it.

Cause 3: The voltage of the print head is too high.

It may be caused by the high voltage. The uv flatbed printer uses nozzle, which has strict requirements on the working voltage. If the voltage is unstable or the voltage is too high, the equipment will not be able to operate normally. Check the voltage indicated by the indicator light, whether the red light is on, and alarm. If it is found that there are circuits of other accessories on the voltage board of the printhead, it means that it is a modified uv inkjet flatbed printer. If the conditions are limited, please equip the voltage stabilizer at the corresponding point to ensure a suitable voltage environment for the equipment.

Cause 4: Problems in electronic control system.

There is also a rare case of the problem of the electronic control system of the UV flat panel. The electronic control system controls the pulse ignition spacing is unreasonable. During the operation of the equipment, the co-impulse interferes with the flight trajectory of the black droplets, resulting in unimaginable effects on all sides. The pulse interval of the electronic control system to control the ignition of the nozzle is not reasonable. There are two reasons for pattern cross color in UV flatbed printers，It is the oblique spray of the nozzle, and the second is a problem with the circuit board.

First, let's talk about the solution to the oblique spray of the nozzle. The oblique spray of the nozzle may be blocked internally. It is necessary to clean the inside of the nozzle to ensure the smooth flow of the internal channel. If the nozzle is still oblique spray blocked after cleaning, it is necessary to consider replacing the nozzle. At present, most of the nozzles used in UV flatbed printers on the market are the fifth-generation oil-type nozzles, non-water-based nozzles and other nozzles. When replacing nozzles, it is best to buy from the original manufacturer, because their nozzles are the most suitable for printers. Original imported.

The second is the problem of the circuit board. Because the phenomenon of oblique jetting on the circuit board is mainly concentrated on the modified universal uv inkjet flatbed printer, the self-developed flatbed printer is not common. Since the modified printer is the circuit board card of the real machine, printer and other equipment, in order to realize the UV printing process, the manufacturer will add a lot of external things on the original circuit board card, causing the UV thousand-board machine to be extremely unstable, resulting in The problem is strange. In this case, it is recommended that the application should directly find the original manufacturer to solve it.

Stripes In The UV Digital Printing Machine

For a long time, many customers in the process of using uv digital printing machine may cause a lot of stripes in the effect printed by UV flatbed printer due to the error of operation, what’s the reason? In that case, many customers will be at a loss, can only wait for after-sales staff to check and repair. As a digital flatbed printer manufacturers, Nocai has dealt with a lot of problems in this area, and we are all brainstorming. Here are a few methods for you to learn and refer to.

First we need to find out the reason:

1. Check whether the test strip has broken needle, floating ink or oblique spray phenomenon. First use the printhead failure test program to check which needle is defective. Then remove the ribbon cartridge, open the printhead locking clip and pinch the printhead fins (i.e. housing) on ​​both sides. Lift the printhead to see With two flexible flat cables attached, the printhead can be removed by pulling the cable. Wipe the ink in front of the printhead with an alcohol swab to see if a needle of the metal uv printeris missing.

If it is a broken needle, you need to change the needle. Generally, if the digital inkjet printer price is expensive, its needle will adopt relative good quality needle in this machine. Therefore, if you have to replace the needle on your own, we suggest you should turn to the inkjet printer manufacturer first, and prepare the tool when replacing the needle, there are tweezers, blades, diamond files, steel rulers, sharpening stones and special printhead accessories with a special device for removing the heat sink, you can see several layers of structure.

2. Check whether the printer driver setting is feathered low or feathered off.

In printing, feathering low is a defect in prints characterized by uneven, jagged edges. The most common cause of feathering is that the ink spills onto the material rather than being absorbed into place. Other causes include dust or ink buildup in the printer of uv label printing machine, static electricity buildup, low ink viscosity, or poor ink transfer.

3. The raster bar and raster decoder are faulty or covered with dust.

Principles of Raster Bar Image Processor

After long time using of the uv inkjet flatbed printer, dusts will reduce the sensitivity of raster bars. Then need to dip the non-woven fabric in alcohol, wipe the raster belt at the head position back and forth until completely clean. Or even replace a new encoder strip. Nocai uv inkjet flatbed printer's raster image processor converts the data sent by the computer into a pattern of microscopic pixels visible on the printed page. It is the equivalent of the graphics card of the uv metal printer.

One difference between screen and print is that a typical screen displays between 1 and 2 million pixels, while an A4 page printed at 300 dpi displays close to 8 million, so specifying pages can be more complicated . Of course, the screen can change dozens of times per second for the human eye to see the movement, so video adapters have that added problem. On a printed page, the eye can pay attention to detail for a long time, so the page must look good.

Computer users have become accustomed to seeing an image on the screen, pressing "print", and getting the document from the printer. Most people probably think that images on screen are more or less directly transferred to paper. It seems like a sensible way to do things, but it usually isn't. What you see on screen and on the page is related in content and general appearance, but very different in detail. What is displayed on the screen of uv  inkjet flatbed printer is recorded in the program in one way and in the graphics card in the other. There are several printer languages ​​that can send information from the computer to the printer. Most printers have their own powerful enough processors and large memory to generate page images from the printer language.

Screens and paper generally use the same scanning principles, but the details are very different. People are used to images on paper being sharper than on screen, which requires more pixels. On-screen images are typically less than 100 pixels per inch - but color sub-pixels can be adjusted within a range of around 16 million colors. A printed page contains 300 to 10,000 pixels per inch, but each pixel is either a monochrome dot on a black and white printer or 8 colors on a color printer.

4. Check the ambient temperature

Low temperatures can affect the performance and life of the uv label printing machine if proper precautions are not taken. Temperature changes can also negatively affect your ink and toner cartridges. With such a large investment and such a large part of organizational productivity at stake, you need to take the necessary steps to protect your equipment from temperature changes. Read on for tips on protecting your printing device from the cold.

Reserve Materials

Even the best desktop uv printer's internal components are all sensitive to static electricity and are prone to leaking during colder months, which can damage other parts of the device. Invest heavily in these supplies upfront to protect your ink cartridges and your machine. Keep spare supplies near the device so you can monitor the temperature effectively. Make sure you don't clutter your device. Give it space to "breathe", so to speak, to avoid overheating.

Use anti-static wipes

During basic regular maintenance of the device, be sure to use anti-static wipes to clean the panel. Static buildup can have a big impact on document quality, resulting in streaks, blurry backgrounds, mottling, and more. It can also damage parts of the device and unfortunately all compact uv printers can fall victim to extreme static buildup. Wiping the machine's interior and exterior panels with anti-static wipes will protect printer components from damage and maintain print quality in cold weather. Be wise with the press operator and rub the fabric softener sheet over the paper before feeding it into the printer to remove excess static electricity.

Batch Printing

UV laser printers require a lot of heat to operate, so the warm-up process is long. During the colder months, you may find that your printer requires more power and heat than usual to operate. That said, you should try to do all of your print jobs at the same time to take advantage of the laser printer's warm-up process while it's already running. This will save time and effort.

Secure storage of supplies

When you store your supplies, you should keep them at room temperature. A common mistake is to invest in a large number of cartridges and then store them somewhere more likely to freeze or dry out before use. Although it does not harm the ink itself, frozen ink cartridges can pose a threat to your digital laser printers. If you anticipate that your laser flatbed printer or its supplies will be exposed to worrisome temperatures, be sure to take the appropriate precautions to maintain the life and operation of the machine.

How To Maintain Desktop UV Inkjet Printer

All desktop uv inkjet printers have a printhead that wears the most and therefore causes the most problems with the printer. Some printers have ink cartridges with built-in printheads, which helps solve some printing problems, but also opens the door to others. Inkjet printers have inconsistent ink quality, and this variation can make the cleaning process take longer. In most cases, better quality ink means easier cleaning.

The print stepper motor controls and parks the printhead assembly. Some inkjet printers have a separate engine for each of these operations. There's also a stabilizer bar that drives the belt to move the printhead, and a paper feed assembly that picks up and feeds the paper into the inkjet printer. There's also an interface ribbon that tells the printer what color to use and where to drop the ink. All of these components need to be cleaned. To properly clean your inkjet printer, you will need: glass cleaner, isopropyl alcohol, 3 or 4 paper towels or WD-40 printer oil, latex gloves and a small pen or hook. Here's how to clean it:

（1）Fold the paper towel in four to absorb it, then add window cleaner or alcohol to the front of the paper towel. Wipe the bottom of the cartridge with a paper towel to clean the printhead.

（2）Separate the printhead from the ink cartridge and clean it with a paper towel and glass cleaner.

（3）Use another paper towel to fold it in four, then spray a thin layer of glass cleaner on your face to clean the tape. There may be ink stains on the ribbon.

（4）Clean the base on the right or left side of the printer using a long hook or long pen to pick up any sticky residue that has accumulated in the docking area.

（5）Add a few drops of oil or spray WD-40 on the stabilizer bar. Make sure the bars get a good coating.

（6）Clean the exterior of the printer with paper towels and glass cleaner.

If the above emergency measures do not solve the problem, or if there may be other problems involved, If the above emergency treatment, after the investigation one by one and can not solve the problem, or may also involve other problems, seek the help of manufacturers , if your printer is from digital uv printer supplier in China, you can contact the after-sales staff or sales remote assistance. The above is my personal opinion, if you have better suggestions or opinions, welcome to leave a message to discuss; Want to know more about UV printer industry knowledge or interested in our machine, you can also leave a message for consultation, we will reply to you as soon as possible.