Pages come out dark

Hi
Replace the ink cartridge with another

you will probably need a maintenance kit. After a while the toner roller and fuzer rollers wear down and allow more toner to be put on to the paper than is needed.

Ink tends to overflow at the bottom guide rollers and the roller gets coverd in ink and causes the black line!The best will be to take it to a dealer and have it cleaned!Good Luck!

ink on one of the guide rollers will cause this

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.

dear friend

looks like problem related with refilled cartridges

are you using refilled cartridges??

if yes then you have to check whether they are leaking or not,

if they are leaking, you have to maintain cleaning level

thats all you can do

thanks

I have a Casio FR-1211 Printing Calculator and I have the same problem. I removed the roller and tried inking the roller with "Sanford's Roll-On Stamp Pad Inker". It works beautifully ! I don't know how long it will last, but for now the print is dark and clear.

John

Most likely you have a leaking print cartridge (toner cartridge). Does it have the same problem if you use the Manual Bypass tray?

It could also be a worn fuser sleeve that is causing the print defect...the fuser would need replaced in that case.

Hi, please attempt to run a numerous blank paper through the printer. This will dry or clean any ink found on the rollers.
Continue to run blank pages through the printer until no more ink is found on the paper, then attempt printing. If ink stains or streaks are still present, the printer may need service.

Tirzo

clean the rollers with the help of maintanance option in the printer properties. if not solved check the ink service station unit inside the machine is full with waste ink , clean the waste ink pads and refix it. clean all smudged inks from the paper pickup rollers