Question about Canon LASER SHOT LBP-2900 Printer

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Black patches appeared when printed - Canon LASER SHOT LBP-2900 Printer

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Go to the Maintenance menu and run all of the cleaning cycles. The printhead cleaning cycle may need to be run more than once. Do the patches run the full length of the page? If so make sure you also run the roller cleaning cycle.

Posted on Apr 24, 2014

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The problem is on the drum if you used it often, one more thing, you did not mentioned if the paper stocked in between the drum and the heating element, if so when you just pull it out it may scratch the drum and may caused to a black patch after printing

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The printings in my hp laserjet 1010 keep appearing with a white band at the right side of the page, i've tried to reinstall the toner but still appears...can you help me guys? please!


Go to paint shoot black colord print page, while printing half page switch off the printer remove cartrige gently, check on catridge drum surface is there any while patch in black image on drum ? if yes *** open laser scanner assembly clean the reflect mirror with ear buds gently fix it back then try once..****check image on paper is there any white band? id no replace teflon sleeve/fuser.*****If white patch is not in image clean/replace the transfer roller. best of luck..

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Black patches start blinking on photos played back


You're seeing blown-out highlights. These are the portions of your pictures which have been overexposed so much that all detail has been lost. If printed, they will show up as pure white, without a hint of shading.

The "correct" fix is to reduce the exposure by using exposure compensation to bring back the details. Blocked-up shadows (the same thing at the other end of the brightness scale, where dark objects go pure black) is generally considered less harmful to the final image.

That was the long answer. The short answer is: Press up/down on the multiselector to cycle through the different views available.

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HP Laserjet 3330 printed dark page especially around the middle


Does this happen both when copying and printing?
For printing solution, try another toner cartridge.
If lines continue to appear when copying (primarily through the automatic feeder) then lift the auto feeder, and clean the glass -mainly the narrow piece on the left side.

please rate solution :)

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Go into your setup menu and turn off closed captioning. The black square is a box for the text.

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Service is required (or a new laser you can now by at very low price)

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Copies and prints in color are black procesed, but in black are ok


Using CMY Color produces a Processed Black.
Using only K will produce a Black.
In the print driver on a PC change your default setting to Black, from the machine you can set it to use only black as well.
That Patch is on the transfer belt. which it will alwyas do, that is what color machines do.

Install the print driver twice and set one driver s Color Mode to color and one to greyscale. This setting can be accessed by right clicking on the print driver and selecting Printing Preferences, click on the Color tab and set the Color Mode appropriately.

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Black PAtch on copy, printing OK. Just afterInstallation.


you have to go through all the steps in the installation manual that came with the copier, ie; screen alignment, gradation. should do the trick

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Print is missing along a one inch width patch for the entire lengh of mdocument


try a new toner cartridge

if it doesn't fix your problem then you willneed a new fuser
it is probably delaminated

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