Question about Canon imageRUNNER 1370F All-In-One Laser Printer

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Laser printer black streaks

I have an HP all-in-one monochrome laser and it works great EXCEPT when in copier mode and using the document feed assmbly. The outputted copies have multiple black streaks extending from top to bottom of the sheet. All other printing is OK. Weird huh? I'm thinking drum or fuser, but which? And why only when in copier mode vs printer or fax reception modes? Isn't the same laser printing process involved with each? Please help if you can. Don't want to junk this 1 year old machine if a readily fixable part is to blame. Thanks in advance.

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Re: Laser printer black streaks

Clean scanner lens with glass cleaner applied to microfiber cloth aslo clean copier glass if this doesnt fix it replace toner/drum cartridge

Posted on Jan 24, 2008

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Is this problem appears when you copy from ADF, but not from platen copy glass?-If Yes clean the ADFs copy glass

If the streaks appears horizontal or vertical?
Check the drum unit and/or fixing film

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We have recently bought a second hand OKI C5200 Colour Laser Printer and even though the black and white print seems to be great the clour is coming out with coloured streaks, what would you recommend?

One or more of the drums may be defective. Swap the black with another color and print a document. If that color printed the charectors ok, then continue the test with the other drums each taking a turn in the Black drum position until you find the bad drum.

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The mfr. & model don't seem right; Dell does have a 5100 but the LJ designation is copyrighted by HP who has a LaserJet 5100.
The rotating drum that transfers the image to paper is smaller in circumference than the paper is long; this accounts for the shadow and the streaks come from the drum no longer being properly discharged and cleaned for the next pass.
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Depends on what you are doing, to print black and white documents only it is better an monochrome laser. To print photos, few color and black and white documents for a home users is generally better an inkjet.
Good color laser are big and expensive.

Laser toners cartridge cost a bit more but last longer.

Generally, if you print only B&W, it is better a laser.
If you print some documents and you want to print photos, then get a good inkjet.
If you want to print loads of B&W and color, and you do not need to print photos, then you can buy a color laser.

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