Strips of lines apears on my paper.

If you are experiencing low print quality with horizontal strips on your Epson R300 printer, it is possible that the problem is caused by a clogged nozzle or an issue with the printer's print head. Here are a few things you can try to troubleshoot the issue:

1. Check the nozzle check pattern: Run a nozzle check to see if any of the nozzles are clogged. If you see any missing lines or gaps in the pattern, it could indicate a clogged nozzle.
2. Clean the print head: If the nozzle check pattern shows that one or more nozzles are clogged, try cleaning the print head. You can use the printer's built-in cleaning function or use a cleaning solution specifically designed for printer heads.
3. Check the ink cartridges: Make sure the ink cartridges are properly installed and that there is enough ink. If the cartridges are low on ink or not properly installed, it can affect the print quality.
4. Check the printer's settings: Make sure the printer is set to the correct paper type and print quality settings. If the settings are not appropriate for the type of paper you are using, it can affect the print quality.

If you have tried these troubleshooting steps and the problem persists, it may be necessary to have the printer serviced by a professional. A technician will be able to diagnose the problem and determine the necessary repairs.
I hope this information is helpful. If you have any further questions or need additional assistance, please don't hesitate to ask.

Usually replacing the toner cartridge fixes that problem. Sometimes it's the fuser.

first clean the inside of the printer as there might be tiny strips of paper that cling to the print head assembly, second open the scanning area and clean the camera as tiny lines came from dust that was being read by the camera as an image.

Check out my youtube video for cleaning the internals, it will probably help get rid of the lines on your Sharp copier.

How To Remove Lines from copies prints on Sharp copier

Have/had the same problem: Getting "paper size mismatch" on the C4280 status screen, after we got a paper jam. Every time we hit OK and put in paper, Message about "Now printing Alignment page", it feeds through quickly, with nothing printed on the page and reverts back to Paper size mismatch. Finally got rid of the error, not sure how, but now when I try to copy anything, we only get the lower right postion of the document that I'm trying to copy. Printing from the PC seems ok.
Powered off and back on, and it is back to P"now printing alignment page, quick feed through and "paper size mismatch" error. AND
When copying directly from the glass panel,it will only print a quarter of the page -however it prints and coorectly if we print directly from the computer.
The problem is the paper size sensors. Remove the plastic access panel that is for access to the rollers in the back and has 4 rollers on it. There are two papaer sensors attached to the printer circuit board (PCB). The control arm for the sensor is a small plastic piece that extends slightly into the paper path above the PCB. The plastic can be broken when you are removing a paper jam. I stuck a small piece of a match stick in the sensor to keep it open (as though a wider piece of paper was passing throught the printer). I can't switch to smaller card stock, etc, but who cares, it works.
The copying problem is caused because the C4280 will not scan correctly until after it does the alignment phase.

have a look at the scanner glass especially the thin strip glass this is the glass that is used when passing paper through the document feeder. if you do a copy from the main glass or print to it and no line apears there is probably dirt or tipex or a ink mark on the surfac, the other thing to look at os the drum charge unit as htese can sometimes fail to connesect correctly at the back and not sit tight in the slot this means the drum isnt charged on the edge.. good luck

lift the feed area and look at the small glass plate where the auto feed paper is actually scanned. That needs a good cleaning. Since the paper runs across it even a tiny little obstruction such as paper left from a paper jam or a dot of ink from that pen you used to unstick that last paper jam (maybe its just me??). That one dot turns into a line when the paper rolls across it. Clean well and the line will dissappear.

Does the line show up on PRINTS FROM YOUR COMPUTER also, or only when SCANNING A DOCUMENT? If the line is only from scanned documents, the SCAN GLASS has something stuck on it. The SCAN GLASS is a GLASS **** located under the ORIGINAL FEEDER. It is NOT the plate of glass you place the original on . Look UNDER the original feeder for a scrap of paper stuck in the optical path of the GLASS ****, and remove the scrap, or CLEAN THE SCAN GLASS IF CORRECTION FLUID, INK, ETC ARE STUCK ON IT. If the line shows up on ALL prints, your CHARGE CLEANING SLIDER located in the IMAGING (DRUM) UNIT must be slid all the way to one end of the charger, OR IT WILL CAUSE A BLACK LINE ON ALL PRINTS. Otherwise, the IMAGING UNIT may need to be cleaned or replaced. Toner smudges on the drum would indicate need for cleaning or replacement.

try to clean the cover glass at the top of the copier with alchol.
be sure that ther is no any dot or lines on top of tha glass specialy the right side.

manual download link
http://usa.copystar.com/CopyStarPub/jsp/Kyocera/resource_details.jsp?rid=2076



If it only has lines on copys then
Clean scanner glass (small slit of glass before copy glass)

If it happens on prints and copys then it will more likely be drum.