Functional Overview
Basic Sequence of Operation
—
Basic Sequence of Operation
Standard Printer Operation
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The Formatter PCA and the DC Controller PCA share information
during printer operation. The DC Controller-to-Formatter
Connector (DC Controller J201) forms a link which operates as a
serial data bus. This allows printer status, command information,
●
and dot-image data to be passed between the two PCAS. The
following events take place during normal printer operation:
Table 5-3 Print Period Descriptions (refer to Timing Diagram)
PERIOD TIMING
WAIT
From power ON (power cord
connection) to the end of Main
Motor initial rotation.
STBY
From the end of the WAIT or the
(Standby) LST~od until the input of
the PRNT signal from the
Formatter. Or from the end of the
LSTR period until power OFF.
INTR
From the input of the PRNT signal
(Initial from the Formatter until the laser
Rotation) diode intensity has been stabilized.
w=====
From the end of initial rotation until
I
LSTR From the primary voltage (DC)
[Last OFF until the Main Motor stops.
Rotation)
If another PRNT signal is sent
from the Formatter, the printer
returns to the INTR period. If not, it
returns to the STBY period,
PURPOSE
Clear the drum surface potential
and clean the Transfer Roller.
I
IMaintain the printer in ready state,
Stabilize the photosensitive drum
sensitivity in preparation for
printing. Also clean the Transfer
Roller.
Form images on the
photosensitive drum based on the
/VDO signal from the Formatter
and transfer the imaue to ~a~er.
Deliver the last sheet of paper.
Also clean the Transfer Roller.
5-40
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