Ricoh G104, Service Manual

Page: 258 / 601

LASER EXPOSURE
G104 6-30 SM
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
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.
Center Front Rear
Y
K
C
M
Y
K
C
M
MM
KY
KC
KM
YY
KK
CC
MM
KY
KC
KM
YY
KK
CC
MM
KY
KC
KM
YY
KK
CC
G105D921.WMF
CÓPIA NÃO CONTROLADA
CÓPIA NÃO CONTROLADA