40496501TH Draft Version 47
2.2.7 Paper End Detection Mechanism (See Figure )
(1) Front/ Rear form end detection mechanism (when the form with sprocket holes is used)
The form prevents the paper end lever tip end from coming into the hole on the sheet feeder
cover rib and the microswitch is set to the ON state. When the form runs out, the paper end
lever comes into the hole on the sheet feeder cover rib and the bottom of the paper end lever
leaves the microswitch to turn it off for form end detection. Both front and rear tractor detects
the paper end at 12.7mm.
(2) Front tractor
Sheet of paper
Tractor cover
Contact lever
Paper end detection microswitch
Tractor with a paper
Tractor without paper
Figure 2.33 Paper end detection mechnism (front tractor)
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