When I print in colour, but not in black and white (or at least not so obviously), a vertical streak appears a couple of inches in from the right hand side of the page - always in the same position. I have followed all the various cleaning instructions in the users manual but this doesn't seem to make any difference. It doesn't matter for general printing however it means that photo printing quality is unacceptable. Help!
It sounds as though a cartridge is faulty.
To determine which one, the easiest way is to run a page of text/block of colour through in yellow then cyan then magenta. which ever page comes out with the streaks on it will tell you which cartyridge to ditch and replace.
Hope this helps
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i have an lexmark 6500 all in one copier. If I print from the computer the copies are o.k., however, if I print a copy from the copier the copies have a black streak on them. How do I get rid of the streak on my copies
The four coloured dots are what is known in the trade as "Traffic Lights". They happen when the photocuductor (PCU) drum gets scratched. If you do a black only print you will only get a black dot, if you do a print with some colour in it you will get all four dots repeated at 150.41mm (PCU drum circumference) intervals. The best answer would be to replace the PCU but it is expensive. The alternative is to take out the PCU, find the scratch and try to polish it out with a very soft cloth. This will only work on the lightest of scratches. Be very careful not to scratch the drum further and avoid shining any bright light on it as it will damage the photo-sensitive surface (normal ambient light is OK).
Try reducing the print resolution using the menu buttons. Does it smudge with coloured prints? If so then the fuser unit is faulty. If it is only black that smudges it is likely to be the K Developer unit. Ensure that you are using genuine toners, not refills or third party as the quality of toner can cause similar results.