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VI. OPERATIONS OF THE STACK TRAY
1.
Moving Up and Down the Stack Tray
a.
Outline
The machine is equipped with a stack tray, to which stacks which have been put into order and
offset/stapled are delivered.
When paper is delivered to the stack tray, the stack tray paper sensor (S11) turns on.
The stack tray is moved up/down by the work of the stack tray lift motor (M5).
If the stack tray is not at the home position when the copier is turned on, the stack tray lift motor
is driven to move the tray to the home position. (The home position of the stack tray is a point 12.5
mm above the point where the stack tray paper height sensor has detected the top of the stack tray.)
The position of the stack tray is monitored in reference to the number of clock pulses generated
by the stack lift motor clock sensor since the stack tray paper height sensor (S10) has turned on.
The upper limit of the stack tray is checked by the stack tray upper limit sensor (S13), while the
lower limit of the lower limit is checked by the lower limit sensor (S12). When the stack tray upper
limit/lower limit turns on, the stack tray lift motor can be driven only in the direction opposite of the
limit identified by the sensor in question.
The limit of sheets on the stack tray is detected by the paper height sensor and the lower limit
sensor if the sheets are not stapled. If the sheets are stapled, the count of stacks is used in addition
to the height of paper detected by the paper height sensor and the lower limit sensor. When the stack
exceeds the height or the maximum number of sets, an overstacking condition will be identified and
communicated to the copier.
Not stapled
Stapled
COPYRIGHT © 1999 CANON INC.
Parameters of identifying stacking limit
Height of the stack detected
Height of the stack detected by paper height sensor
and lower limit sensor or the number of sets
Tale 2-601
CANON FINISHER-E1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 2 BASIC OPERATION
2-45
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