Epson 9600 Service Manual - Page 109
Paper Size Detection Sequence Left and Right Edges
UPC - 010343841888
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EPSON Stylus Pro 7600/9600 Paper size detection sequence (left and right edges) Error display: Set the paper correctly CHECK P O IN T Transition to this sequence is allowed only at paper initial. At inter-page skew checking, transition to Simplified detection sequence for left and right edges (skew check) (p.111) takes place. Right edge detection position Solid Line: Paper Broken Line: Printable Area Left edge detection position Revision A Left and right edge detection start Note "*1": Paper presence position = 215.4 mm Paper absence position = 132.9 mm LED turns off upon completion of front detection. CR moves to the paper presence position (100CPS). Flashing during acceleration on Fl_Box "*2": Printing area MAX position Stylus Pro 9600: 1260.5mm + 7.0mm (Reserved width) Stylus Pro 7600 752.5mm + 7.0mm (Reserved width) Moving to paper absence position. Threshold value is calculated during moving to paper presence position. After determination of threshold value, edge sensor LED is kept on. *1 While monitoring the edge sensor output, CR moves outward toward the printing area MAX position (350CPS). *2 "*3": Printing area MIN position 142.9mm -4.0mm (Reserved width) "*4": To prevent wrong recognition as paper presence when there is no paper as a result of wrong detection of the rib of the platen by the edge sensor, a paper width detected to be not greater than A4 size - 20 mm is judged to be paper absence. Paper absence detected No ? Yes From the position where the sensor output has changed, CR moves by 2 mm toward the home. (240CPS) While monitoring the edge sensor output, CR moves outward at 5 cps. The position where paper absence is detected is judged to be the right edge position of the paper. While monitoring the edge sensor output, CR moves toward the home to the printing area MIN position (350CPS). *3 Paper absence detected No ? Yes From the position where the sensor output has changed, CR moves by 2 mm outward (240CPS). While monitoring the edge sensor output, CR moves toward the home at 5 cps. The position where paper absence is detected is judged to be the left edge position of the paper. Paper width>210 - 20mm No ? *4 Yes Edge sensor LED is turned off. Return Error Figure 2-7. Paper Size Detection Sequence (Left and Right Edges) Operating Principles Print Mechanism Components 109