Color fault analysis of the hottest inkjet printer

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Ink jet printer color fault analysis

ink jet printer has become the most popular printer, which is widely used in home, small office and other fields. We often encounter some faults related to the color of printed products when we use them in ordinary times. Here are the causes and solutions of these faults:

fault phenomenon 1: when an inkjet printer prints data after one year of use, the font strokes that it starts to print are clear, and then there is the phenomenon of missing pens and broken strokes. Finally, there is a blank on the printing paper without any ink, but the print head still moves back and forth normally

cause of failure: there is no ink in the cartridge. Replace it with a new box of ink to print, and the failure remains. Print the self-test according to the self-test method in the user manual, and the paper is still blank. Nevertheless, it can be said that there is no problem with the hardware of the printer and the circuit signal is normal. During self-test or power on, the ink can be normally sucked to the small square box of the print head, indicating that the ink delivery pipe is unblocked. Finally, according to the three methods of automatic cleaning described in the user manual to meet the requirements of elongation measurement, the print head is cleaned, and the fault still cannot be eliminated

Troubleshooting: Based on the above situation, it can be preliminarily judged that the printing head is blocked by ink impurities, so it is decided to manually clean the printing head. The specific operation steps are as follows:

(1) disconnect the power supply of the printer, remove the upper housing cover of the printer, and carefully remove the printing head

(2) use a clean glass or ceramic dish that hopes to establish the national recommended standard of green logistics and raise it to the national compulsory standard. Put anhydrous alcohol on it, soak the nozzle vertically in alcohol for about half an hour, and be careful not to soak the circuit part. Then pick up the nozzle horizontally, and use a sharp nozzle to suck the functional characteristics of the belt pulling machine to stop automatically: after the sample is broken, the ball inhales about 2ml of clean alcohol and injects it forcibly into the ink inlet on the nozzle, repeating several times until the alcohol flowing out of the nozzle changes from black to colorless. Then press out the air in the suction ball, and then cover the ink inlet of the nozzle. Let go and let the suction ball suck out the residual ink impurities and alcohol in the nozzle. Repeat several times, and the nozzle will be cleaned

(3) dry the alcohol on the nozzle with a clean degreasing cotton ball. Be careful not to leave fiber on the nozzle to prevent it from being inhaled into the nozzle. Put the nozzle in a clean place, let the remaining alcohol evaporate, and then put the nozzle into the print head as it is. Pay attention not to insert the ink pipe too deep into the ink inlet of the nozzle, so as not to make it difficult to absorb ink. Connect the circuit signal line, clamp the print head cover, cover the printer shell, connect the printer power supply and print cable, install the print paper, press and hold the LF/FF key, turn on the power supply for self-test, the printing is normal, and the fault is eliminated

fault phenomenon 2: the color in the print result is misaligned

the correct design and layout of the original graphics should be checked first. If the color is separated from the image, it will also be separated from the final printout. Please use the "zoom" or "print preview" function of the specific software program to check the condition of the graphics on the page. If the original image is correct, the most likely cause of color misalignment is that the print cartridges are not aligned. You may need to align the print cartridges when removing them for cleaning or replacement. Most printers provide ready-made utilities. For example, you can use the following procedure to align cartridges in hpdeskjet 600 and 800 printers:

first open the hpdeskjet utilities folder or program group. Then double-click the llpdeskjet toolbox icon. Click the printerservices tab. Finally, click the align the pdnt cartridges button. Follow the onscreen prompts to complete the cleaning process

symptom 3: if the printed image cannot match the display of the monitor, first confirm whether the ink cartridge is installed correctly, and check the printer property dialog box (usually check the "graphics" tab) to see whether the color matching function is used. If you try to print a photo quality image, you may need to install a photo cartridge in the printer and select the photo related mode (such as super photo) in the printer dialog box, or use photo quality paper with special coating

fault phenomenon 4: one or more colors are missing in the printout

in almost all such cases, the problem is that the ink cartridge is blocked or out of ink. Please clean the ink cartridge, or use the printer specific command to smooth the ink cartridge. For canonbj series printers, please turn off the printer, press and hold the power button until the printer is powered on and beeps twice. If the problem still exists, please replace the ink cartridge

fault phenomenon 5: mutual diffusion between colors

this kind of problem is caused by using too much ink on the page, which is usually the result of incorrect paper selection. Please check the print settings, try to use the "economic" and "draft" quality settings instead of selecting the "fine" or "normal" options, and confirm that the paper used in the printer matches the paper selected in the printer properties. For example, transparency usually requires more ink than ordinary paper. If the paper is set to "transparencies", but ordinary paper is still used, it is likely that too much ink is sprayed on the page, resulting in the diffusion of color

symptom 6: "stripes" are found in the printing effect of the inkjet printer

fringe phenomenon may be caused by different reasons, and each possible reason needs to be carefully checked

1. Check the paper. Incompatible or inappropriate coated paper may cause streaking due to different ways of ink absorption. Please use the new inkjet printing paper recommended by the printer manufacturer (for example, HP luxury photo paper)

2. Check the paper thickness lever/setting. If you use printing paper, please make sure that the paper thickness lever is in the normal position of inkjet printing paper, not in the envelope position. Refer to the printer documentation for information about the paper thickness setting

3. Check the graphics card driver. Some video card drivers can cause memory conflicts between video memory and printer drivers. This usually leads to abnormal printing problems, such as obvious stripes and missing characters. It's tedious to try to use the default wi Jinan Shijin rib steel mechanical property test standard provided by Microsoft, ndows graphics card driver, or check whether the graphics card manufacturer has provided an updated graphics card driver

4. Check the printer driver. Confirm that the correct printer driver is used for the specific inkjet printer. At the same time, make sure that the correct print settings are selected for the required paper type and resolution in the driver settings. Try to reduce ink usage by using "draft" or "quick" printing mode

5. Clean/unblock the ink cartridge. Press the "purge" button (sometimes referred to as the "cleaning" button) to perform one or two cleaning processes to remove the blockage in the ink cartridge. Replace the ink cartridge. If the cleaning process cannot solve the problem, please try to use other cartridges.

symptom 7: the color shows stripes or stains

this phenomenon is usually caused by residual module or paper problems. Fortunately, this is a simple problem that is easy to solve

1. Clean/unblock the ink cartridge. Please check the ink nozzle area around the ink cartridge. The residual ink blocks and dirt (dust, carpet fibers, etc.) around the ink nozzle may be like a brush to apply one color to another before the color dries. The area around the printing ink nozzle needs to be cleaned. Ink cartridges can be cleaned manually or automatically (through printer software). For example, to run the cleaning process of hpdeskjet 600 or 800 series printers, you can perform the following steps:

(1) open the hpdeskjet utilities folder or program group.

(2) double click the hpdeskjet toolbox icon.

(3) click the printerservices tab

(4) click the "clean the PRNT cartridge" button

(5) follow the screen prompts to complete the cleaning process

2. Reduce ink consumption. Please check the wrinkles of the paper. These wrinkles usually mean that too much ink is sprayed on the page. Try setting the print mode to the "fast" or "economical" option to consume less ink

3. Use a special inkjet printer. You can also try to use other more suitable printing paper (such as specially coated inkjet printing paper) which can absorb and dry ink faster

4. Set a longer drying time. Some types of print jobs, such as transparencies, require additional drying time. Please do not touch the printout before the ink has enough time to dry, unless you use fast drying ink, such as Epson's "century rainbow" series ink, etc

source: maintenance Forum

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