HP Photosmart 7550 - Full Page Photo Printing Jams at end

You will have to check the equipment driver itself. While attempting to print, try changing the page size (go to page setup). This will give you an idea.

try aligning the heads, and cleaning ink cartridges

Try using HP Support

HP Photosmart C6280 All in One Printer

Right click on default printer icon select printing prefrences,click on advanced tab,select the size.or

Click on start menu then click on control panel.
Click on classic view on the left pane.
Double click on printers and faxes from the top toolbar.
Click on add a local printer.
Select the USB 001 virtual printer port from the “Use existing port” and click on next.
Select the manufacturer as HP and printer as Deskjet 990c and click on next.
We are using the generic driver for HP printers.
Use the default name for the printer, or you can change to your printer name and click on next.
Select yes to print a test page and click on next.
Select yes to set as default and click on next.
Select no to “do not share” and click on finish.

You have an HP printer. I highly recommend you use HP photo paper for the best results. This may not solve your jamming problem but it may. HP printers are very touchy as to what photo paper you use.

Assuming a 2 cartridge system, and you want B&W or sepia, pull the color cartridge and print away! Works for my HP DJ 5440.

Also had ongoing problem of paper jams printing PDF files, but not when printing any other files. Solved both problems by uninstalling and reinstalling printer driver.

Try Getting a PM kit to replace all the rollers.

There are known issues if you are not using geniue hp cartridges.
Can you try the printer in another computer to see if its a issue with your computer or a internal printer issue?

If it's a B&W or sepia photo, and you wanted to print B&W or grayscale anyway, pull the color cartridge (assuming a 2 cartridge system). I did that with my HP DJ 5440 and it works perfectly.