Flow Of Sync Signals - Canon iR2200 Service Manual

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CHAPTER 3 LASER EXPOSURE SYSTEM

2.2 Flow of Sync signals

[1] The BD signal goes '0' when laser light is detected.

[2] The phase is matched with the phase of the printer, and a sync signal is generated.

[3] Based on the printer sync signal, image data is read from the image memory.

[4] Video signal

[5] The 2-pixel parallel signal is converted into a single-pixel serial signal.

[6] The laser drive signal is used to drive the laser unit to suit the video signal.

Laser driver

Indicates that the BD signal cannot be detected within a specific period of

time after the laser has been turned on.

DC controller

2000 2000 2000 2000

CANON iR2200/iR2800/iR3300 REV.0 MAR. 2001

Controller assembly

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Ir2800 Ir3300