Process Control; Overview; Process Control Steps; Six Steps - Ricoh B051 Service Manual

PROCESS CONTROL

6.4 PROCESS CONTROL

6.4.1 OVERVIEW

The copier adjusts the following process control parameters:
• Development bias (V
• Charge corona grid voltage (V
These 2 parameters maintain a consistent gamma for the engine.
NOTE: This copier uses only the ID sensor. (There is no TD or potential sensor.)

6.4.2 PROCESS CONTROL STEPS

Six Steps

Depending on the machine's condition, some or all of the following steps may
occur:
"
: ID sensor calibration
# : Color development bias initialization (M, then C, then Y)
$
: K development bias initialization
% : M, C, Y, and K bias fine adjustment
&
: Charge grid bias voltage adjustment
' : Process control interval counter reset
If the main power is turned off (or the cover opened) during a process control
session, the session is aborted. Turning the power on (or closing the cover)
restarts the process control session.

When is Process Control Done?

When an event arises, the specified steps are performed.
Event
Forced process When forced process control is done (engine SP mode
control 3-001-1)
Process control When more than 200 sheets have been printed upon
regular interval completion of a job. (The interval can be changed with
engine SP3-003-1.)
Power on When the fusing pressure roller temperature is 60 ° C or
lower immediately after the power is turned on.
Environmental When the change in the temperature/humidity sensor
change output since the previous process control exceeds a
certain value. SP3-004 can be used to change the
threshold temperature and humidity values.
B051/B052
CÓPIA NÃO CONTROLADA
)
B
)
G
Condition
6-16
CÓPIA NÃO CONTROLADA
Steps
" '
→
" % & '
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" % & '
, , ,
" % & '
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