Write Unit Control - Develop ineo+ 6500 Service Manual

Theory of Operation Ver1.0 Sep.2006
8.2.2

Write unit control

• The read data converted into digital data in the CCD board is sent to the image process board (IPB).
• The RGB signals are converted to the YMCK signals in the IPB.
• The converted YMCK signals are distributed to the corresponding laser drive board; /Y (LASDB/Y), /M
(LASDB/M), /C (LASDB/C), /K (LASDB/K) in the IPB.
• The laser drive boards emit laser beam to create an electrostatic latent image on the corresponding drums.
• Each laser drive board emits two beams per one laser diode, and writes two lines per one scanning.
• The write start position is determined according to the INDEX signals detected by the Index boards/Y
(INDEXB/Y), /M (INDEXB/M), /C (INDEXB/C) and /K (INDEXB/K) to prevent the misalignment of scanned
image in main scanning direction.
[1] Laser beam
[2] Polygon mirror
[1]
[3]
[2]
[3] Drum
8. WRITE SECTION
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