New Aio Detection; Toner End Detection - Ricoh BP20 Service Manual

SYSTEM LAYOUT

6.3.7 NEW AIO DETECTION

A new supply AIO cartridge has a ID chip. The machine detects that a new
cartridge has been installed when the chip is detected.
The machine then resets the total dot counter (TOTAL TONER COUNT) and CRU
print counter (Cru Prints). The counter for counting the number of CRU replaced
(Replaced Toner Counts) is also incremented. Only in the case of the "Replaced
Toner Counts" being at 0, the CRU currently installed is regarded as the starter
CRU. In this condition, the threshold to detect toner-end is shorter than that for the
supply CRU.

6.3.8 TONER END DETECTION

The machine does not have a toner end sensor. The amount of toner is checked
via software. The machine counts and adds up black dots as toner consumption.
For example, the following occurs when the machine prints 5% of black rate chart:
• Starter cartridge: Approx. 4, 750, 000, 000 dots will be added.
• Supply cartridge: Approx. 7, 500, 000, 000 dots will be added.
When the total number of dots reaches a pre-programmed figure (as for toner near-
end), the machine shows "TONER LOW". After another period of dots has been
counted up, the machine finally shows "TONER EMPTY" (as for toner-end), and
the machine stops printing.
You can check the total dot counts from the current cartridge via the Configuration
page in TECH mode.
G144/G145 6-12 SM