Canon FAX L1000 Service Manual page 441

3.4.3 Operation
a) Function
a-1) Paper pickup function
The pick-up roller, feed roller, and separation roller are rotated sequentially by the main
motor rotation, and an envelope is picked up. Then, the unnecessary envelopes are
removed by the separation roller and the picked up envelope is fed to the printer.
a-2) No paper detection function
The envelope sensor in the envelope feeder detects whether or not there is recording paper
in the envelope feeder.
a-3) Paper jam detection
The CPU send retry instruction to the envelop feeder if the top of page sensor does not
detect the leading edge of the envelope within the prescribed time after the pick-up starts.
b) Structures
The envelope feeder picks up the envelope from the envelope feeder and feeds it to the
printer. The flow of the envelope is as shown below.
Feed roller
Sparation roller
Pick-up roller
Figure 5-31 Envelope Feeder
Figure 5-32 Cross-Sectional Diagram
5-83
FAX-L1000 Chapter 5: Appendix
Weight
Separation guide