Memory chip
The memory chip is non-volatile memory that stores information about the usage of the toner cartridge and
helps protect the customer from counterfeit cartridges. The chip is also used to detect the presence of a
cartridge within the printer or when a cartridge is installed in the wrong slot. The printer reads and writes the
data in the memory chip.
Toner level and cartridge life detection
Toner level detection: The DC controller detects the remaining toner in a cartridge by the optical detection
method and then noties the formatter of the remaining toner level.
Cartridge life detection: The DC controller detects the cartridge life by monitoring the total operating time or
remaining toner level of the toner cartridge. The DC controller determines a cartridge end of life and noties
the formatter when total operating time of the cartridge reaches a specied time or the cartridge runs out of
toner.
Pickup, feed, and delivery system
The DC controller controls the pickup, feed, and delivery system according to commands from the formatter.
The pickup, feed, and delivery system uses a series of rollers to move the paper through the printer.
The pickup, feed, and delivery system consists of the following three functional blocks. The DC controller
controls each block to pick up, feed and deliver the paper.
●
Pickup-and-feed-block: Controls the movement of the paper from each pickup source to the fuser inlet
●
Fuser-and-delivery-block: Controls the movement of the paper from the fuser to the delivery
destination
●
Duplex block: Controls the movement of the paper from the duplex switchback unit to the duplex re-
pickup unit (duplex models only)
ENWW Pickup, feed, and delivery system 27
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