Question about Epson AcuLaser C900 Printer

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Print format changes during print

We have replaced all the consumables on the printer including the transfer unit and fuser but we still have the problem of text randomly appearing in Bold or in a larger type font or blured within a document we have changed the paper but still have the problem any ideas please

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Try removing the printer from your system. Delete it from "Printer and Faxes" and delete the driver components. Unplug the USB from the printer and reboot the computer. Download a new driver from Epson's web site and install it on your PC.

Follow the instructions during the install process for plugging in the USB etc. Once finished, run a test print and check the results. If the situation is no better, then the chances are there is a hardware problem.

Try a new USB cable and if there is still no change you can be fairly sure the issue lies with the printer. This is likely to mean that the main board of the printer is faulty and starting to break down. A C900 may not be worth the cost of fixing the issue, but if you can get a used unit off ebay or similar with a different problem, you could use the used parts to rectify your machine.

Posted on Nov 10, 2008

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Does the transfer kit include the fuser on this model? If not then it's highly likely that that's the part that needs swapping. I have also seen faulty toner cartridges produce lines so it's worth check that too.

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Hi thpep:
Here is a repeating defects ruler. Mach the first defect at the top of the page and alighn with this ruler and it will tell you what assembly is giving you the problem.

Repeating Defects
Routine
Maintenance Item Component Distance between Defects
Imaging Unit Developer Roller [YMCK] 28 mm (1.10 in.)
Drum [YMCK] 62 mm (2.44 in.)
Drum Charge Rollers 25 mm (1 in.)
IDT 1 (Y and M, C and K) 132 mm (5.20 in.)
IDT 2 all colors together 132 mm (5.20 in.)
Transfer Roller Transfer Roller 64 mm (2.52 in.)
Fuser Assembly Fuser Assembly 82 mm (3.23 in.)

Defects Associated with Specific Printer Components
Some print-quality problems can be associated with specific assemblies, the most
common problems and the associated assemblies are listed below. Also, refer to the
specific print-quality troubleshooting procedure for more information.
Imaging Unit
■ Streaks
■ Fine Lines
■ Banding in Process Direction
■ Uneven Density
■ Voids
■ Repeating Defects
Transfer Roller
■ Toner on the back side of the printed page (simplex mode)
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Fuser
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Hope this helps
pdouglasss@hotmail.com

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Image formation system
Laser printing requires the interaction of several different
technologies including electronics, optics, and electrophotographics
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formation consists of seven processes:
Print cartridge
As the focal point of the image formation system, the print cartridge
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drum, primary charging roller, developing station, toner cavity, and
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properties of the drum form an image on the drum surface and then
transfer the image to media.
CAUTION The print cartridge does not include a light-blocking shutter. Do not
expose the drum to light, which can permanently damage the drum.
Protect the print cartridge whenever you remove it.

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