I. BASIC OPERATION
A. Outline
The envelope feeder feeds envelopes into the printer.
The envelope feeder is controlled by the pick-up commands (1st Start and 2nd Start) sent
from the DC controller in the printer.
Operation sequences of the envelope feeder are controlled by the envelope feeder driver PCB.
A 4 bit microcomputer (CPU, IC932) and a gate array (G.A., IC931) are installed on the PCB. The
CPU serially communicates with the DC controller in the printer via the gate array.
The CPU drives the pick-up motor in response to the pick-up commands (1st Start and 2nd
Start) sent from the DC controller.
+24VDC is supplied to the envelope feeder from the printer. +5VDC for the ICs and sensors
is generated within the envelope feeder driver PCB from this +24VDC.
The flow of the signals between the envelope feeder and the printer is shown below.
Figure 2-1-1
2 - 1
CHAPTER 2
IC 931
Gate array
Bus
Envelope feeder driver PCB
+24VA
Printer
IC 932
CPU
DC controller PCB
Serial line
Envelope feeder
paper sensor
Motor drive
circuit
Pick-up motor
Содержание EF-9
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Страница 48: ...VIII LOCATION OF CONNECTORS Figure 4 8 1 4 12 CHAPTER 4 J24 J932 J931 ...
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Страница 54: ...PRINTED IN JAPAN IMPRIME AU JAPON 0199AT0 70 CANON INC The printing paper contains 70 waste paper ...