Canon Puncher Unit-L1, Service Manual

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Chapter 2
2-8
F-2-9
2) After the horizontal registration sensors (LED1 to 4, PTR1 to 4) detect the edge of the paper at its inner side in
keeping with the paper size signals arriving from the host ma-chine, the horizontal registration motor (M62) drives
the punch slide unit to a predetermined position further towards the front, and stops the unit at this position.
F-2-10
3) When the trailing edge sensor (LED5, PTR5) detects the trailing edge of the paper, drive of the punch feed motor
(M63) is stopped to stop paper feed. Next, the punch motor (M161) is driven to punch holes in the paper.
Horizontal registration motor (M62)
Sheet delivery direction
Punch slide unit
Trailing edge detection sensor
(LED5,PTR5)
Sheet
Horizontal registration sensor 1(LED1,PTR1)
: detects the edge of A3, A4, LTR, and 279 mm x 432 mm (11'' x 17'') papers
Horizontal registration sensor 2 (LED2,PTR2)
: detects the edge of B4, B5, LTR-R, and LGL papers
Horizontal registration sensor 3 (LED3,PTR3)
: detects the edge of A4R paper
Horizontal registration sensor 4 (LED4,PTR4)
: detects the edge of B5R paper