Paper Size Detecting Mechanism - Konica Minolta bizhub 169 Service Manual

Theory of Operation Ver. 1.0 Apr. 2007
2.3.5

Paper Size Detecting Mechanism

• Both the width (in the crosswise direction) and length (in the feeding direction) of the
paper are detected and the copier CPU determines the paper size based on the combi-
nation of the two readings.
• The width of the paper is detected when the lever that is operatively connected to the
Edge Guide activates or deactivates the Paper Size Detect switch.
• The length of the paper is detected when the lever that is operatively connected to the
Trailing Edge Stop actuates or deactuates the switches on the Paper Size Detect Board.
Trailing Edge Stop
Paper Size
A3
B4
A4 S
A4
B5 S
B5
A5
Edge Guide
Paper size detect board (PSDTB)
SW4 SW3 SW2
ON — —
— — —
— ON ON
ON ON —
ON ON ON
ON — —
— — ON
2. Paper Feed Unit (PF-502)
Paper size detect board (PSDTB)
SW4 SW3
Paper size detect switch (SW1)
Paper size detect switch (SW1)
SW1
—
—
ON
—
ON
ON
—
SW2 SW1
4686C508AA
ON
—
—
ON
—
—
—
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