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PROCESS CONTROL
SM
6-11
G060
Det
a
iled
De
s
c
ri
ptions
Step 2: ID Sensor Solid Pattern Generation
The machine agitates the developer for between 15 and 60 seconds until the
fluctuation in TD sensor output becomes less than 0.3V, and then makes a 10-
grade pattern (12 mm x 15 mm) on the transfer belt for each toner color. Each
grade of the pattern is a solid color, and is made by changing the development bias
and charge roller voltage. The difference between development bias and charge
roller voltage is always the same.
Step 3: Sensor Pattern Detection
The ID sensor detects the densities of the 10 solid patterns for each color. This
data goes to memory.
Step 4: Toner Amount Calculation
The amount of toner on the transfer belt (M/A, mass per unit area, mg/cm
2
) is
calculated for each of the 10 grades of the sensor pattern from the ID sensor
output value from each grade of the pattern.
Step 5: V
D
, V
B
, VL Selection and V
REF
Adjustment
The machine determines the relationship between the amount of toner on the
transfer belt and the development bias for each of the 10 grades. The machine
now selects the development bias and charge roller voltages for the target M/A for
each color by referring to a table in memory.
The way that the laser power (V
L
) is selected depends on the setting of SP3-125-2.
1 5 m m
1 2 m m
G060D154.WMF
Target
M / A
M / A
B
D e v e l o p m e n t B i a s
Development Bias
Charge Bias
LD Power
B
0
C
0
L
0
B
1
C
1
L
1
—
—
—
B
C
L
—
—
—
B
n-1
C
n-1
L
n-1
B
n
C
n
L
n
G060D002.WMF
Summary of Contents for G060
Page 1: ...G060 G570 G082 SERVICE MANUAL 001159MIU RICOH GROUP COMPANIES...
Page 2: ......
Page 3: ...G060 G570 G082 SERVICE MANUAL RICOH GROUP COMPANIES...
Page 4: ......
Page 5: ...G570 SERVICE MANUAL RICOH GROUP COMPANIES...
Page 6: ......
Page 7: ...G570 SERVICE MANUAL RICOH GROUP COMPANIES...
Page 8: ......
Page 9: ...G060 G570 G082 SERVICE MANUAL 001159MIU...
Page 10: ......
Page 12: ......
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Page 16: ......
Page 38: ......
Page 42: ......
Page 44: ......
Page 45: ...INSTALLATION...
Page 46: ......
Page 58: ......
Page 59: ...PREVENTIVE MAINTENANCE...
Page 60: ......
Page 64: ......
Page 65: ...REPLACEMENT AND ADJUSTMENT...
Page 66: ......
Page 112: ......
Page 113: ...TROUBLESHOOTING...
Page 114: ......
Page 167: ...SERVICE TABLES...
Page 168: ......
Page 229: ...DETAILED DESCRIPTIONS...
Page 230: ......
Page 307: ...DUPLEX UNIT G571...
Page 308: ......
Page 321: ...ONE TRAY PAPER FEED UNIT G567...
Page 322: ......
Page 331: ...TWO TRAY PAPER FEED UNIT G568...
Page 332: ......
Page 341: ...LARGE CAPACITY TRAY G569...
Page 342: ......
Page 360: ......
Page 361: ...TWO TRAY FINISHER G565...
Page 362: ......
Page 393: ...FOUR BIN MAILBOX G566...
Page 394: ......
Page 402: ......
Page 403: ...SPECIFICATIONS...
Page 404: ......
Page 415: ...G570 SERVICE MANUAL...
Page 416: ......
Page 417: ...COPIER FEATURE EXPANDER G570...
Page 418: ......
Page 482: ......
Page 654: ......
Page 668: ......
Page 669: ...ARDF G564...
Page 670: ......
Page 694: ......
Page 695: ...FAX UNIT G307...
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Page 812: ......
Page 835: ...G082...
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Page 846: ......
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Page 882: ......
Page 883: ...TECHNICAL SERVICE BULLETINS...
Page 925: ...FIRMWARE HISTORY...
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Page 1077: ...FIRMWARE HISTORY...