Cassette Feed; Figure 2-14. Paper Cassette And Feeder Assembly; Figure 2-15. Paper Size Detecting - Epson C11C605001 - DFX 9000 B/W Dot-matrix Printer Service Manual

Operating Principle

2.1.2.1 Cassette Feed

This printer can use three types of paper cassette: A3 universal cassette, A4 universal cassette, and
optional envelope cassette. Figure 2-14 shows the paper cassette and feeder assembly.
Feed
Roller Assernbty
\
/
Turn Roller Assem

Figure 2-14. Paper Cassette and Feeder Assembly

paper is in the paper cassette, the paper*ut actuator fir the papermut sensor is lifted. When the
paper supply runs out, the paper-out actuator is lowered, causing the shutter to interrupt light
from the LED to the photMransistor. TM causes the signal to go I-DGH, informing the engine
driver board (MCU PWB) that the paper cassette is empty.
The paper cassette of this printer has paper guide plate and paper size detecting cam. The paper
guide of this cassette m move to fit several size papers. 'This printer detects paper size by the
paper size switch. The paper size detecting cam is rotated by moving the paper guide plate (rear).
The paper size switch has four small mechanical switches. The rotating position of paper size
detecting cam is detected by these four switches on/off.
Feeder &N13 Board
2-8
Paper Cassette
Feed &lenoid
Turn =ienoid
Cam
Paper S;e Switch

Figure 2-15. Paper Size Detecting

Paper Guide
Paper Cassette
Size Spring
pring
. . .