Solution from HP Support
Just had the same issue. Running MAC OS 10.5.6. Here is the solution:
Uninstall prior driver (follow exact uninstall procedure as outlined on the HP website for C7280 Printer) and install latest driver from HP website:
HP Photosmart Full Feature Software and Drivers - Mac OS X v10.3.9, v10.4 and v10.5*
If problem still persists follow below instructions:
=== To reset the printing system ===
1. Click on the apple icon on the top bar.
2. Then select system preferences, please click on it.
3. Under System preferences you would find Print & Fax, Please click on it.
4. On the left hand side you would find the printer names that are installed on your computer.
5. Please click on the printer you would get an option that would say
a. Set as default printer.
b. reset printing system.
Then please click on reset printing system.
=== Add printer ===
1. Click on the apple icon on the top bar.
2. Then select system preferences, please click on it.
3. Under System preferences you would find Print & Fax, Please click on it.
4. Then at the left hand bottom corner of that window you would find a “+” and a “-” button
5. Please click on the “+” button, you would see a window where we can add a printer.
6. The printers name will be displayed in that box.
7. Please select it & then click on add.
8. Then you would find this printers name in the left hand side of the print & fax page.
Check if the issue persists. If the issue persists then follow the steps given below.
=== Invoke the scrubber ===
1. Click on GO.
2. Click on Applications.
3. Click on Hewlett Packard.
4. Click on HP Device Manager (by default, it's located in the dock.
5. Click on the drop down next to Information and Settings, select Uninstall HP AIO Software.
Click on Continue.
6. Press and hold Control, Option and Apple keys at the same time and click on Uninstall.
If it is done right, there should be a pop up that asks if the user is sure they want to remove all HP Software.
Note: this step will uninstall all the HP software installed on your computer. If you have any other HP printer installed then you may have to reload the software and run the setup again.
7. Click OK.
8. Enter the password and click on continue.
9. The scrubber will run through the uninstallation.
10. When the uninstallation is complete perform the Repair Disk Permissions steps given below.
=== Verify Disk Permissions and Repair Disk Permission===
1. Click on Go tab from the menu bar at the top
2. Select Utilities tab
3. Click on Disk utility
4. Once the disk utility pops up, select the hard drive and click on Verify Permissions tab.
5. This may take some time to complete as the Mac will try to verify all the permissions for the hard drive.
6. Once the Verify Disk Permission is complete, restart the mac.
7. Restart the Mac and follow steps 1 – 4.
8. In the 4th step select Repair Disk Permissions.
9. Restart the Mac.
Now, download and install the software and driver for your printer from the link given below.
HP Photosmart Full Feature Software and Drivers - Mac OS X v10.3.9, v10.4 and v10.5*
NOTE: Clicking the link may give an error indicating it is invalid. If this occurs, copy the portion of the address on the remaining line(s) and paste it at the end of the address showing in your browser until the complete address is displayed in the Address box.
Hope it helps.
JR