Music (Mirror Unit Skew And Interval Correction)6-20 - Ricoh G165 Service Manual

Laser Exposure
6.3.4 MUSIC (MIRROR UNIT SKEW AND INTERVAL
CORRECTION)
During MUSIC, the line patterns above are made 16 times for fine adjustment or 8 times for
the rough adjustment on the transfer belt. The spaces between the lines (YY, KK, CC, MM,
KY, KC, KM) are measured by the front, center, and rear TM sensors. The controller reads
the average of the spaces, and adjusts these items:
Sub scan line position for YCM
Main scan line position for KYCM
Magnification ratio for KYCM
Phase control
The transfer-belt-cleaning unit cleans the transfer belt after the patterns are measured.
The execution timing for MUSIC follows the sequence of the process control (
Control").
G165/G166/G167/G181/G183/G184 6-20
"Process
SM