any one knows which pins in the HP7000 print head are responsible for the print signal and ones for the control signals? Answered

Check out this video on how an inkjet cartridge works. The print head is little more than a holder for the cartridge and a connection point for the data cable to the cartridge. All the signals are coming from the control boards in the printer. The wires to the head only tell which nozzle to fire and you have power going to the heating element in the cartridge.

http://www.youtube.com/watch?v=NCIJUQbti30

What kind of control and print signals are you looking for?