Canon GP215 Service Manual page 104

3. OPERATIONS AND TIMING
7. Binary Processing
The binary processing circuit converts multi-
ple-value image signals into binary signals. The
method used here is called the PD method, which
enables better reproduction of highlight areas
than the median density (MD) retention method.
Binary processing is executed in text mode
and text/photo mode.
3–50
COPYRIGHT © 1996 CANON INC.
8. D-A Conversion
The D-A conversion circuit is used to convert
multiple-value image signals into analog signals.
D-A conversion is executed in photo mode
CANON GP215/200 REV.0 JULY 1996 PRINTED IN JAPAN (IMPRIME AU JAPON)