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DEVELOPMENT
2-40
A230/A231/A232
SM
2.6.6 TONER DENSITY CONTROL
Overview
There are two modes for controlling toner supply: sensor control mode and image
pixel count control mode. The type of mode can be changed with SP2-208-1. The
factory setting is sensor control mode. Image pixel count mode should only be
used if the TD or ID sensor is defective.
Toner Density Control Flow Chart
Copying
Vt(10) detection
Toner supply motor
turns on in reverse for
0.3 s.
GAIN determination
Image pixel count mode:
GAIN = 1
Toner supply motor on
time calculation
Vsp/Vsg detection
New Vtref determination
Image pixel count
K = K + 0.25
K = K - 0.5
K = K - 0.25
Has the following
condition been detected
20 times?
Vtref < Vt(10)
Vtref + 0.1 < Vt(10)
or
K
≥
1.5
?
Has the following
condition been detected 10
times?
Vtref-0.2 > Vt(10)
or Has the toner supply
motor been
turned on ?
Have 10 or
more copies been
made since the last Vtref
change and is the
copy job
finished?
No
No
Yes
Yes
No
Yes
No
Yes
K not
changed
A231D540 WMF
Содержание A230
Страница 1: ...SERVICE MANUAL 000861MIU A230 A231 A232 RICOH GROUP COMPANIES ...
Страница 2: ...SERVICE MANUAL A230 A231 A232 RICOH GROUP COMPANIES ...
Страница 3: ...A230 A231 A232 SERVICE MANUAL 000861MIU ...
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Страница 140: ...INSTALLATION ...
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Страница 280: ...PREVENTIVE MAINTENANCE ...
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Страница 595: ...SM A203 231 A232 19 11 3 4 HELP MENU 3 4 1 HELP ABOUT SWAPUTI SwapBox And SwapFTL FUNCTIONS ...
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Страница 922: ...SwapFTL and SwapFTL Installation Manual ...
Страница 933: ...SwapFTL Binary Utility Operation Manual ...
Страница 944: ...SM A203 231 A232 19 11 3 4 HELP MENU 3 4 1 HELP ABOUT SWAPUTI SwapBox And SwapFTL FUNCTIONS ...
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