Canon iR1020 Series, Service Manual

Page: 107 / 304

Chapter 7
7-1
7.1 Construction
7.1.1 Outline
0013-1105
iR1020J / iR1024J / iR1020 / iR1024 / iR1024A / iR1024N / iR1024F / iR1024i / iR1024iF
The machine is not equipped with a paper width detection mechanism. It uses center reference, in which paper moves centered through the pickup/feeding/delivery
path. The source of paper may be from any of two: cassette and manual feed tray.
The paper is controlled so that its leading edge matches the leading edge of the image on the photosensitive drum by means of the registration sensor (SR11); it
then is moved through the transfer, separation, feeding, and fixing assemblies to reach the delivery tray.
The machine is equipped with 5 sensors to monitor the movement of paper; the arrangement and of these sensors and rollers are as follows:
F-7-1
T-7-1
Symbol Name
SR5 Delivery sensor
SR9 Cassette paper sensor
SR10 Delivery paper full sensor
SR11 Registration sensor
SR12 Multi feed paper sensor
[1] Cassette pickup roller
[2] Cassette feed roller
[3] Cassette separation roller
[4] Multi feed pickup roller
[5] Multi feed separation pad
[6] Registration roller
SR12 SR9
SR10
SR11
SR5
[1] [2] [5] [3] [4]
[6]