Horizontal Lines on your print out
paper
Possible Cause:
Air in the print head: This is the most common cause of printing
problems. When changing the cartridges, or for other reasons, air
bubbles can enter the print head. This prevents the necessary pressure
build up (through heating or vibration) as a result, no ink is sprayed
onto the paper and you can see white lines. This effect is also called
banding.
Solution:
To improve your
print, most printers feature a print head cleaning cycle. Ink is
flushed through the print head to re-establish the ink flow. It may be
that you have to carry out this procedure several times to achieve the
desired result.
Possible Cause:
Blocked nozzles: If the printer is not used for a long period, particles can build up and block the print head.
Solution:
To remove this blockage, run the cleaning cycle. If you cannot achieve
a satisfactory result, use a nozzle cleaning fluid.
Possible Cause:
Defective print head: Print heads are exposed to high stress. The
temperature variation in thermal print heads can vary by 100`s of
degrees centigrade up to 10000 Hertz (10.000 times per second).
Therefore print heads have a certain amount of wear and tear. Depending
on the manufacturer and price, print heads have a limited life. Epson
uses Piezo print heads, which guarantee a long life. However if they do
become defective, compared to other printers, the repair can be costly.
Solution:
With printers
that feature integrated print heads that are separate from the ink tank
(that is for example, Epson and most Canon machines) all that remains
is to change the print head. With HP Lexmark and Dell the print head is
part of the cartridge, and is automatically replaced each time you
replace the cartridge.
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