New Aio Detection; Toner End Detection - Aficio CM-P1 Service Manual

SYSTEM LAYOUT

6.3.7 NEW AIO DETECTION

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

6.3.8 TONER END DETECTION

The machine does not have a toner end sensor. The machine checks the amount
of toner with 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 gets to 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 in the Configuration
page in TECH mode.
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20 July 2005