Re: Print Quality: HP4700 - HP Support Community

SeeAll · ‎11-08-2019

Hi,

I'm using a HP4700 when printing or duplex printing the white paper is covered in an overall background grey colour under the print.

It looks like surplus toner is not being removed from the transfer sheet.

Transfer unit 100%.

I've changed the black toner cartridge with no change to the print quality.

I've run calibrate and cleaning program.

Any help will be appreciated.

Best wishes,

SeeAll

John_Getzke · ‎11-08-2019

You can run the Half-way test to isolate a problem to the fuser or laser printing area:

https://www.printertechs.com/printer-troubleshooting/halfway-test

If the problem is in the laser area then I would look at the image transfer belt next.

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Repairatrooper · ‎11-08-2019

Run the print quality pages and post them here.

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SeeAll · ‎11-08-2019

I've run the half-way test everything's fine, but just before closing the transfer belt assembly I noticed, what appears to be a film of black toner on the transfer belt. I wiped the belt. After printing four sheets the problem has reappeared, and a film of black only toner is on the transfer belt.

The image transfer belt still shows 100%

Any thoughts?

east2100 · ‎11-08-2019

The image transfer belt shows 100% doesn't mean it is good.

Do as Repairatrooper said run the print quality pages and post them here it will help someone to help you.

SeeAll · ‎11-09-2019

Hi,

please find attach print quality pages, and a sample page showing the greyed background.

Could the wiper blade not be cleaning the surplus toner from the drum in the toner cartridge?SamplePrint Quality InfoDiagnostic pagePage 1Page 2Page 3Page 4Page 5

east2100 · ‎11-10-2019

I can't see anything wrong in you posted pictures except for the first one covered in an overall background grey colour just as you've said.

But the Diagnostics Pages seem fine.

Did you ever try different kind of paper to rule out the paper's issue.

And another diagnostic way is to get into diagnostic menu from panel to disable cartridge check and exchange the black and cyan toner cartridge then re-print all the pictures you post before to see what will happen.

Post all of them here maybe someone can help.

Sorry for my poor English i'm not living in an English using country i'm in Taiwan.

Print Quality: HP4700

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