If you find when printing an order report, sample or proof sheet that the images are very low resolution (they appear pixelated), then the following solution has been provided by a ProSelect user who had this issue after purchasing a new HP Photosmart 5520 printer.

They found this working fix through the HP user forum. (This may also apply to other printers and relevant associated drivers).

To use an alternate print driver for HP printers in Windows 7:

1. Click on the Start menu.
2. Click on Devices and Printers.
3. Right-click on your printer.
4. Select Printer Properties.
5. Click on the Advanced tab.
6. Click on New Driver.
7. Click Next.
8. Select HP from the first list.
9. Select Deskjet 450 from the second list. If the 450 driver isn't there, use the Deskjet 990c driver.   (This is for the HP Photosmart 5520 printer example)
10. Click Next.
11. Click Finish.
12. Click Apply.
13. Click OK to close the window.

We hope this may help you also.