Xerox Able 1406 chip

[glenng]

Hi to all
I'm not a technician, just a long time user of photocopiers. My question to any out there is that the xerox able i have has a chip (4404B) on the toner cartridge (113R55) which i think is just a counter. My question is if it is a counter and has no real electrical contact to the cartridge itself then why does the copy count vary so much from cartridge to cartridge. Am i missing something here, as i said i'm no technician.

[siraphop]

2 type of cartridge checking. first count by eeprom about 40,000 page

code j6

other is toner checked by magnet sensor in the tank. u will got J1 code