HelloCustomerand thanks for your detailed update.
I have a few links here I would like you to run, in order to address the issue with your scanner. The HP Drivers Update v1.1 is an update Apple developed for HP Printers on Leopard systems.
If you have already update your printer/scanner (Photosmart Studio) software dated 02/2008, then disregard that download and install link.HP Drivers Update v1.1
(From Apple for Mac OS X 10.5.3 Leopard and up
)HP Photosmart C4280 drivers
(for Mac OS 10.5.x and includes update of Photosmart Studio imaging software
Once you have fully downloaded and installed these drivers, before attempting to access you printer and to test the scanner feature, repair all permissions on your Mac OS X 10.5 Leopard volume first by running Disk Utility, per the procedure below.-RUN DISK UTILITY FIRST-
Go to Finder Menu bar
• Click Go > Utilities > Disk Utility
and open up Disk Utility app.
• Click on Macintosh HD volume (or on the name you have changed
this volume to.)
• Select "Repair Disk Permissions
**Let Disk Utilities run this repair permissions until completion
(This is not often a necessary step, but in the many of the hands-on software and Mac OS X troubleshooting I have done on Macs, I almost always run it just because it does repair alot of the permissions on files which can sometimes affect how certain applications, files and folders work. It also improves your Mac's performance a bit too:
Once Disk Utility has completed the permissions repair, please close the application (unless you see red text at the completion summary of Disk Utility- then reply back to me asap
), and then attempt to use your HP's scanner function and let me know if there is any difference in its operation and performance.
I will be awaiting for your reply. Thanks for your patience!