I have a "HP Officejet pro 6970" printer.
I'm going to build a software that sends following info by email:
• Unique printer identifier (s/n)
• Date & time of print job
• Quantity of pages printed in print job
• Type of pages printed i.e. black or coloured
• % full status for each ink cartridge installed
I'm sure that there is a dll file for those info in printer driver because i can see those info if i press priter state report button.
If you think you can do it, please bid.