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The HP Envy 7640 is an all-in-one inkjet printer with a built-in scanner and faxing capabilities. It can be connected to your devices via Internet, WiFi, or a USB cable.

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black copy from glass . saturated with ink

copier works great from computer. copies from glass or feeder comes out completely covered in black, grey ink. Same results if nothing is on the glass. scanning light works.

Maybe a new one is in the works?

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Hi @pagedog ,

Can’t find a service manual for the printer but either the laser scanner assembly service station unit may be faulty (same scanner unit is used in printer for both ADF and platen glass scans or copies) or the control board for the scanner unit may be faulty.

The spare part number for the laser scanner assembly service station is B4U34-60014.

If you search online using the part number only you might get suppliers - most say out of stock, call. It isn’t cheap so it would be an expensive gamble to replace it and see if that resolved the problem.

Here’s a link to all the parts for the printer.

You could always contact the supplier in the link and ask their opinion as to what is the most likely cause of the problem. It never hurts to ask ;-)

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