HP LaserJet 4
How to Identify and Fix Common Problems ?
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Lines or streaks always appear in printouts when the cartridges begin to run out of ink. Replace print cartridges that are out of ink or low on ink.
When your printer leaves black lines, the lines indicate that there are excess toner powders on the rollers or transfer belt within the printer. As the paper is moved along by the rollers and transfer belt, any excess powder left on them can result in lines being left on the paper.
A printer printing lines on the page are normally caused by a blocked, dirty, or damaged print head. Blocked ink cartridge nozzles, or not removing protective seals correctly when you installed a new ink cartridge can also cause missing lines of print.
Streaks and unwanted lines could mean that the printer heads are out of alignment. There`s an alignment tool in the printer`s control panel. If that`s not the issue then the printer is dirty. Printer ink stripes may appear along the edges of the paper, which means there`s ink on the rollers and other parts.
Regular washing and waxing helps to remove Black Streaks before they get good and stuck. A good regular wax job helps to prevent Black Streaks in the first place. A good layer of wax will help to minimize the way Black Streaks set into the surface. Waxing creates a physical barrier across the surface.
For cleaning, HP recommends using HP Equipment Cleaning Wipes, but you can use an HP-approved lint-free wipe and deionized or distilled water. Note: If dark spots appear on back side of prints, clean drum screen. Note: If minilab prints more than 2000 prints each day, clean drum screen up to twice daily.
Relevant Questions and Answers :
the most relevant questions and answers related to your specific issue
HP Laserjet 1320tn printing grey instead of black
ANSWER : Try this test. Put a page into the manual feeder and do that same test. When the end of the page is just about to enter the printer, open the lid. Take out the toner cartridge and pull back the shutter. Look at the image and see if it is black. The explanation is that there is high voltage going to both the toner cartridge and the charge transfer roller below it. If the image on the drum is black, then the fault is at the transfer roller not getting enough high voltage. The transfer roller pulls the image off of the drum and down onto the paper. It would not be a laser scanner problem as any issue with it would not result in an overall gray image, but combination of gray and black. It will probably turn out to be a bad HV power supply, which will need replacement. I’ve never seen this particular problem on this model.
changing from printing in photo black to black ink
ANSWER : You can change the black ink cartridge and choose either Matte Black or Photo Black.You will need to use the Black Ink Conversion Kit that came with your printer. The kit includes three conversion cartridges (yellow, magenta, and cyan), which are used to reduce the amount of ink consumed in the conversion. dissertation writing service
Black prints as a grey sheen
ANSWER : From your description, it doesn’t sound like an ink problem at all. I would think it is more likely the computer is at fault. Driver issue or something in the settings.
lexmark C544 prints yellow streaks
ANSWER : Are the streaks repeating defects or does it run top-down on the right or left side of the paper ?If you have a vertical yellow shade on the paper, it’s probaly the yellow developer unit which causes the problem. You then can either replace the developer only or (depending on the total number of pages printed, check the statistics !) the complete imaging kit which consists of all four developers and the imaging basket with the Photoconductors.If you see a repeating defect, you should at first print out the print defects page (menue\reports\print defects). Compare the yellow streaks with the printed scales. Above the scales it tells you which component should be changed.
C1660w black printing light
ANSWER : Have someone fixed this? I have the same problem. Please help.
when printing front and back, the front will print well but the back will fade
ANSWER : It happens because second side voltage is much higher and the board breaks. Are you getting this issue in auto duplex only, or same error you are getting when you print second side manually?
Black line on printed copy
ANSWER : Have absolutely no idea what kind of machine you have so here’s the generic answer. Big copy glass, little copy glass to the left of it. Take window cleaner, put it on paper towel, clean little glass.
black cartridge not printing
ANSWER : https://www.youtube.com/watch?v=thrZtvAhKm0