HP laserjet m712 Fehlerbehebungsanleitung
misregistration) for each paper size. The side misregistration amount is notified to the formatter through
the DC controller as a correction value of scanning start position for the second side printing.
Figure 1-63
Duplexer side misregistration detection
M1
CL1
Paper
Photoreceiver sensor assembly
Side misregistration sensor
Flag for home-position
detection
LED for
home-position detection
LED for
A4-R/A3 size detection
LED for Letter-R
LED for Letter-R
size detection
LED for paper right edge detection
LED assembly
Image starting position
Sensor position
when the paper is in niminal position
Sensor opsition
when side misregistration of paper
is detected
Sensor position
when detecting the home-position
Side misregistration
Outline of LED ass’ y
1. Detects home-position
2. Detects right edge of paper
ENWW
Duplexer
81