Thick black line appears 1/2 way across image when scanning

Hi,

Please clean the drum of the printer and then print 5 to 9 test pages to check the effect of the cleaning of the drum on removing the black lines.

Thank you.

It really depends on how thick the black line is. If its say 1/2" to 1" thick then a segment of the contact image sensor has failed. If its very thin then that would be just dirt either of the scanner glasses or under them. When you open the scanner cover you will find two glasses. the thinner one is for the adf and the very large is for flat bed scanning. If you get the line when using both then the CIS is faulty and needs replacing. If either one is good with no line then it could be just the ribbon cable that goes from the main board to the CIS.

Print quality is good, b&w copy is good. When i make a color copy the machine makes blue lines or bink lines. This is a brand new c452.Scan to PC is ok, print its ok only copy. Lines are vertical.

Why not contact Sharp support. Your machine is under warranty and they should help you figure out what is wrong with it.

The contact image scanner is faulty or the cable from the motherboard to the contact image scanner is faulty. I would bet it is the CIS as this scanner is used in many different machines (canon,lexmark,sagem) and it gives problems in all the machines. You can usually salvage a good one from an elcheapo lexmark inkjet multifunction.

sounds like one of the bulbs has blown. you can try replacing or get someone to do it for you or just buy a new printer/scanner

you have a problem in your scanner assembly, clean or replace it

Sounds like the issue is with the scanner bulb. May not be moving across or warming up to full capacity.

Make sure the scanner is plugged in directly to the wall and not into a surge protector or a power strip. If problem is still there and you are in warranty you will need to replace the unit. If OOW then you should call and see if you can repair or upgrade the unit at a discounted price. If you want to speak to someone in English tell them you want mac support - they are in Canada.

If you set Automatic brightness/Contrast this happens. Try manual setting. Adjust different settings and select the best suited for a particular type of drawing. The scanner takes couple of milliseconds to judge the best lighting, by then the paper has moved little. This area appears black. This is easily solvable.

S. Mohan, Chennai, India

Can't image it being anything but scan glass, if prints are fine, are you sure you cleaning scan glass(inside of where originals are fed)?

If so then scanner lamp faulty, but I've never come across it myself on this model.