Automatic Line Position Adjustment; Overview - Ricoh G104 Service Manual

LASER EXPOSURE

6.4.5 AUTOMATIC LINE POSITION ADJUSTMENT

Overview

YY, KK, CC, MM: Spaces between two lines of the same color
KY, KC, KM: Spaces between a black line and a color line
Front
Y
YY
K
KK
C
CC
M
MM
Y
K
C
M
During automatic line position adjustment, the line patterns above are created eight
times on the transfer belt. The spaces between the lines (YY, KK, CC, MM, KY, KC,
KM) are measured by the front, center, and rear ID sensors. The controller reads
the average of the spaces, and adjusts the following items:
• Sub scan line position for YCM
• Main scan line position for KYCM
• Magnification ratio for KYCM
• Skew for YCM ( NOTE)
NOTE: In this procedure, only the skew for YCM is measured. If you want to
adjust the main skew, do the main skew adjustment procedure.
( 3.3.2)
The transfer-belt-cleaning unit cleans the transfer belt after the patterns are
measured.
G104
CÓPIA NÃO CONTROLADA
KY YY
KC KK
KM
CC
MM
6-30
CÓPIA NÃO CONTROLADA
Center
KY
KC
KM
MM
Rear
YY KY
KK KC
KM
CC
G105D921.WMF
SM