Detecting The Height Of The Stack On The Tray - Canon FINISHER-C1 Service Manual

From tray 1 to tray 2
Feed motor (M1)
Tray lift motor (M5)
Shutter closed sensor (PI6)
Shutter open detecting switch (MS4)
Height sensor (PS1)
H.

Detecting the Height of the Stack on the Tray

1. Outline
The number of sheets delivered to the tray and the number of sets (stapling or job offset opera-
tions) are stored in memory by the finisher controller PCB. The height of the stack is checked by the
height sensor (PS1). See Table 2-202 for the maximum loading capacity of each tray.
The finisher controller PCB stops operation when the conditions in Table 2-202 occur, inform-
ing the host copier that the tray is full.
Stacking
mode
Tray
Small-size
Tray 1 44 mm high
Tray 2 148 mm high
(1000 sheets)
Tray 3 30 mm high
(200 sheets)
Note: 1. The capacity for non-staple sort mode is approximate and computed based on 80 g/m
2. Alignment for stacks consisting of 750 sheets or more or 100 mm or higher is not guaranteed.
Caution:
1. The term "small-size" stands for A4, LTR, and B5.
2. The term "large-size" stands for A3, A4R, B4, LGL, 297 mm × 432 mm (11 × 17),
and LTRR.
COPYRIGHT © 1998 CANON INC. FINISHER-C1/SADDLE FINISHER-C2 REV. 0 DEC. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Shutter
closed
Motor CW rotation
Figure 2-249
Table 2-202
Non-staple sort
Large-size
22 mm high
(300 sheets) (150 sheets)
74 mm high
(500 sheets)
15 mm high
(100 sheets)
CHAPTER 2 FINISHER UNIT BASIC OPERATION
Tray Shutter
moved opened
Motor CCW rotation
Small-size
300 sheets/20
sets, fewer of two
(or, 44 mm high)
750 sheets/30
sets, fewer of two
(or, 110 mm high)
Tray
moved
Correct height detected
Staple sort
Large-size
150 sheets/30
sets, fewer of two
(or, 22 mm high)
500 sheets/30
sets, fewer of two
(or, 74 mm high)
Not possible
2
paper.
2-37