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 ("Process Control").