HP LaserJet Enterprise M4555 - Page 53

Print cartridge
The cartridge consists of a reservoir of toner and the following components:
●
Photosensitive drum
●
Developing roller
●
Primary charging roller
●
Memory tag
Figure 1-9 Print Cartridge
Primary
charging
roller
Engine power supply
DC controller
PS115
Cartridge sensor
Developing roller
Cartridge
Photosensitive
drum
Drum motor
Memory tag
Memory tag
The memory tag is a non-volatile memory in the cartridge and the DC controller controls the memory
tag.
The DC controller reads and writes the data in the memory tag to detect or to save the information
about usage for the cartridge.
The DC controller determines an memory tag error and notifies the formatter when it fails to either read
from or write to the memory tag.
Cartridge-presence detection
The DC controller detects whether the cartridge is installed in the product.
ENWW
Image-formation system
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