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Technology > Pickup / Feed System > Pre-registration Area Control/Function > Transparency Detection
Technology > Pickup / Feed System > Pre-registration Area Control/Function > Transparency Detection
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Double Feed Detection
Double feed detection is executed by the ultrasound sensor (for transmission, reception)
located between the deck feed roller1 and 2 on the main deck path.
Pickup options (POD deck and Side Paper Deck) have the same ultrasound sensor.
When double feed is detected, it delivers the double feed paper to the escape path. (Refer to
Escape Area Control/Function for details.)
Ultrasound has the following features and they realize the double feed detection regardless of
paper type (plain paper, thick paper, color paper or transparency etc.).
• The ultrasound decreases drastically at the border between the density (air-paper). The
ultrasound decreases at the air layer between the affected paper so that double feed can
be detected.
• Decrease degree does not change due to the color or thickness of measurement target.
PS119
PS120
PCB32
Double feed detection
PCB (transmission)
PCB33
Double feed detection
PCB (reception)
PCB1
DC controller
<Double feed detection sequence>
1) When the leading edge of paper goes through the double feed sensor by 70mm,
detection is started (standard sensor: deck feed sensor 1).
2) When “double feed” is detected.
3) The paper that is ahead of the affected paper is delivered normally.
4) Affected paper is delivered to the escape path.
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Transparency Detection
Image standard sensor (PS41 and PS42) is used for transparency detection.
While PS41 (image standard sensor for transparency) is a reflection sensor and can detect
all types paper, PS42 (image standard sensor) is a prism sensor and it cannot detect the
transparency.
When the paper setting and the detected result differ as below, transparency JAM occurs.
• If the non-standard transparency is fed. : 0D90
• If the transparency is fed with non-standard transparency setting. : 0D93
• If the paper other than transparency is fed in transparency setting. : 0D92
PS42
PS41
PS41
Image standard sensor for transparency
PS42
Image standard sensor
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Содержание imagePRESS 1110
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Страница 655: ...5 5 Adjustment Adjustment Overview When replacing parts Major adjustment ...
Страница 733: ...7 7 Error Code Error Code Overview Location Code Pickup Position Code Pickup size Error Code Jam Code Alarm Code ...
Страница 944: ...8 8 Service Mode Service Mode Overview COPIER FEEDER SORTER BOARD Situation Mode ...
Страница 1555: ... Service Tools General Circuit Diagram General Timing Chart Operator Maintenance Appendix ...