Black ink is streaky and low contrast in images

[Fella3]

 

My printer is an HP Envy 7640. In the diagnostic print you can see that the black comes up streaky, and also some of the text is smudged (there is occasionally horizontal lines of white)

Below, I’ve also attached an image of a drawing, and then how my printer prints the image. The black is streaky and low contrast. The text in the print diagnostic is even darker than the black that was printed in the drawing…what is going on???

I’ve done 3 cleaning cycles, aligned the printer, and cleaned the page smears.

I’m wanting nice quality colouring and printing because im trying to print designs onto iron on transfer paper and they came out with terrible contrast, like my example drawing.

 

[Nal_NR]

Hi @Fella3,

Welcome to the HP Support Community. 

I'd be glad to help you! 

I'm sorry to hear you're having trouble with your HP Envy 7640 printer. It must be frustrating when the prints don't meet your expectations, especially for something as important as your designs. Let's try to get it working as expected.

Update the firmware. Click here

If you have performed all the steps. from this document and still having issues, either the cartridges are faulty or the printer itself. 

Hope this helps! Keep me posted for further assistance

Please mark this post as “Accepted Solution” if the issue is resolved and if you feel this reply was helpful click “Yes”.