Figure 1-21 Toner Cartridge Components - HP LaserJet Enterprise 700 M712 series Handbuch Zur Fehlerbehebung

Primary charging roller
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Memory tag
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Figure 1-21
Memory Tag
The cartridge serves a role in the following functions:
Memory tag
●
The memory tag is a non-volatile memory in the cartridge and the DC controller controls it. The
memory tag stores information about usage for the cartridge and the DC controller reads and
writes the data in the memory tag. 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
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The DC controller detects whether the cartridge is installed in the product by monitoring the
cartridge presence sensor. The DC controller notifies the formatter when it determines a cartridge
absence.
Toner-level detection
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28 Chapter 1 Theory of operation
Toner cartridge components
Drum motor
Primary
charging
roller
Photosensitive drum
DC controller
High-voltage power supply
Cartridge
Developing roller
ENWW