Feed/Drive System; Outline - Canon SORTER S-82 Service Manual

II. FEED/DRIVE SYSTEM
A. Outline
The sorter delivers the paper sent from the printer face-up or face-down according to the com-
mands sent from the video controller through the option controller.
In case of face-up delivery, the paper is simply loaded into the face-up tray.
In case of face-down delivery, the paper can be delivered to the 7 face-down bins in the fol-
lowing 4 modes.
1) Mail box
The mail box delivers the paper to the face-down bin specified by the video controller.
2) Job separation
The job separation switches the face-down bins according to the job to deliver the paper.
3) Stacker
The Stacker handles the 7 face-down bins as 1 bin. The paper is delivered from the lowest
bin 7. When the bin 7 becomes full, delivery is switched to the bin 6, and then to 5, and so
on to the upper ones.
4) Sorting
The sorting is designed so that, when multiple sheets of documents are printed multiple
times, the first copy is delivered to the uppermost face-don bin 1, the second copy to the bin
below the first one, and so forth, changing the bins every copy.
Note: If the paper has some size other than the face-down delivery permitted sizes (A3, A4,
A4R, A5R, B4, B5R, Ledger, Legal, Letter, Letter-R, Executive), the paper is delivered to
the face-up tray in the face-up mode, instead of being delivered to the face-down bin.
The paper sent from the printer is switched between the face-up delivery and face-down deliv-
ery by the reversing deflector 2.
The feed motor (M1) is a stepping motor. The rotation of the motor is controlled by the micro-
computer (CPU) on the sorter driver PCB.
There are 11 photo interrupters on the feed path to detect arrival or passing of the paper.
These are the entrance sensor (PI9), reversing sensor (PI10), vertical path sensor (PI11), face-up
delivery paper sensor (face-up sensor PCB, PI1) and paper sensors (paper sensor PCB, PI1 to
PI7).
If the paper does not reach or pass though the sensors within the specified period of time, the
sorter driver determines that a paper jam has occurred, stops the operation and reports the jam
to the option controller.
There are also full-load sensors (full-load sensor PCB, PI1 to PI7) and face-up full-load sen-
sor (face-up sensor PCB, PI2) to detect full-load condition of the tray and bins.
When the bins or the tray is fully loaded with paper, the sorter driver informs the option con-
troller of the full-load condition. Paper having been already printed with the printer is delivered
to the same bin.
CHAPTER 2
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