Question about Konica Minolta bizhub C250 All-In-One Laser Printer

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Unwanted background When photopying, a black square appears on the center of the page.

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Re: unwanted background

Definately need to start from scratch with the installation manual.
Don't skip any stages, when you have completed the procedure, the square disappears.

Posted on Jan 28, 2008

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Re: unwanted background

Probably machine install is not completed. read the installation manual and do it again. shoult fix this problem.

Posted on Dec 31, 2007

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Printer has light grey background after printing

Hi Mel:
Just a thought, is there a "greyscale" setting?
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Dell 1815dn - when faxing, the fax goes through but all pages are black. when attempting to scan, pages are black. when trying to scan to a PDF file, the file is blank or black.

Welcome to Fixya

Try to print a document and see if you will be getting same issue. Try to copy a document and see if same thing will happen also. Check if the cartridges are not running out of ink.

Thank you for using Fixya!

Aug 02, 2011 | Dell 1815dn All-In-One Laser Printer

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I have one problem with hp laserjet P4014n printing all paper black. the background is black all but word are showing can someone help me in this

If your background is "Black" it's going to print it all black, change your background color to "Gray" and your machine will then print a gray background instead of black. Also note that when you print a black background your toner life expectancy will be no where your expected yield ratio is. Average yield is 5% for X (X meaning size of cartridge) amount of printed pages. If your printing a black background your utilizing 100% yield coverage. Not sure if this is the answer your looking for. However basic black and white printing with a black background will print the page completely black.

Mar 01, 2011 | Printers & Copiers

1 Answer

Dell 1815dn laser printer prints completely black pages

1. Charge – Print Quality (PQ) -- The charge roller evenly distributes a negative charge on the photoconductor (PC) drum. This evenly distributed charge acts as the film that is discharged (exposed) by the laser to create the latent image.
a. Print Quality effected: Faint, Entire Black background, Grey Fog/Haze
b. Parts Involved:
i. Drum -- A drum cartridge is coated with a photoconductive material that allows electricity to pass when exposed to light. As an example of why this can be the failure, if you leave a drum out in light long enough, you will get dark backgrounds or just black pages. However, drums do wear out over time too; specifically the photo material the drum is coated with. As this degrades, more of the positive electricity on the inside of the drum gets through and grabs toner, as if the laser wrote to every square inch of it. A damaged or defective PC drum can cause black streaks/lines, voids, speckles and various other print quality problems.
ii. Charge Roller Also known as the BCR or Bias Charge Roll. The charge roller pulls double duty. It energizes the outside of the drum with negative energy and as a result it cleans any previous latent images. If the charge roller were failing to energize either due to the HVPS or the charge roller itself, it wouldn’t clean any previous unused toner deposits from the last revolution would start to accumulate and appear on paper more and more causing haze. A missing charge roller causes completely black pages.

iii. HVPS – High Voltage Power Supply -- Responsible for charging components such as the inside of the drum, the charge roller, and transfer roller. If the HVPS does not give enough to the charge roller it can fail in erasing the drum, causing entirely Black pages to be printed.

Apr 16, 2009 | Dell 1815dn All-In-One Laser Printer

1 Answer

Toshiba eStudio 210c grey background on copies

U need to check your developer material. How many copiers has been made?

U can also perform 05-200 for the auto toner adjustment. The value should be in the range of 235-245% ( 2.35v - 2.45v )

Mar 26, 2009 | Toshiba e-Studio 232 Black and White...

2 Answers

MP830 prints a black stripe down the back of the paper

the waste ink pads are full ..when the black line appears it is an indicator that the waste ink pads are full it is usualy because the printer has reached its life expectancy the solution is either buy a new printer or pay a tech about 170 dollars to repair it

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1 Answer

My photopier is loked

probably it can be reset,the procedure as follow;
1,power on
2, press follow by sequence;
"clear", "interupt", "0","interupt"
3,enter 14 press print
4, press "clear" to end this reset
5, good luck

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2 Answers

Scanner leaves three vertical lines on scanned page


A dirty glass base can cause ‘spots’ or blemishes to appear on your final printout. Additionally, if you had some sort of opaque liquid that may have transferred on to the glass base from a previous operation. But the majority of the unwanted vertical lines are generally caused by either a dirty or damaged print roller or faulty LEDs in the Scanner Module.

To separate one from the other you have to check the following:

Do you only see the lines with a Scan operation?
Do your print jobs print fine without any unwanted lines?

If you only see the unwanted lines during a Scan operation, then most likely you have a fault/dirty/obstructed LED module.

If you see the unwanted lines with all print operations (Scan, Print and Copy), then you most likely have a worn out, damaged or dirty Print Roller.

Hope this helps…

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