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B. CCD/CCD Driver
1.
CCD
The CLClOOO's image input block is a 34ine CCD line sensor, each line consisting of 5000 photocells
(Figure 3-302). Each line is covered with a red, green, or blue color filter.
The light reflected by an original is projected to the CCD line sensor in reduced form, and the light color-
separated by the R, G, and B color filters is photo-converted. The signal charges occurring after conver-
sion are synchronized with the shift pulses generated by the analog processor PCB and stored temporar-
ily in the transfer block (single line); then, they are synchronized with the clock pulses generated by the
analog processor PCB and sent to the CCD in sequence.
Filter
Light-receiving block
Transfer block
The transfer block and the output block of each line sensor consist of an odd channel and an even
channel.
Clock pulses (odd)
Transfer block (odd)
Light-receiving block
Transfer block (even)
Clock pulses (even)
COPYRIGHT Q 1897 CANON INC.
Front
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Figure 3-302
Figure 3-303
CANON CLClOOO REV.1 MAY 1997 PRINTED IN JAPAN (IMPRIME AU
1
Output block (odd)
CCD shift pulses
Output block (even)
Rear
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