Medium detection unit, medium conveyance apparatus and image formation system including a single sensor which detects medium passage, a fully accumulated condition and a jam condition
AssigneeFujitsu Limited
InventorsFumihiro Itoh, Kazuo Shimada, Hironori Kanno, Katsuei Asano, Nobuyuki Hayashida
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Abstract
A unit which detects a discharged condition of each of media with a simple and low-cost structure. For this purpose, this unit is designed to output a signal indicative of the passage of the medium, a signal indicative of a full accumulated condition of the media within the medium discharged section and a signal representative of the occurrence of a jam condition of the medium during the passage of the medium. This unit is applicable to printers such as an electrophotographic type printer.
Claims12
A medium detection unit for detecting a condition of each of media being discharged through a medium conveyance system into a medium discharged section, said medium detection unit including a single sensor being made to output a signal indicative of a passage of said medium, a signal indicative of a fully accumulated condition of said media within said medium discharged section and a signal representative of the fact that said medium gets into a jam condition during the passage of said medium.
A medium detection unit for detecting a condition of each of media being discharged through a medium conveyance system into a medium discharged section, said medium detection unit comprising:
- a movable member varying in position in accordance with movement of said medium while coming into contact with said medium;
- and
- a single sensor for sensing a position of said movable member to output a signal indicative of a passage of said medium, a signal indicative of a fully accumulated condition of said media within said medium discharged section and a signal representative of an occurrence of a jam condition of said medium during the passage of said medium.
A medium conveyance apparatus comprising:
- a medium conveyance system for conveying each of media;
- a medium discharged section for accumulatively receiving said media discharged through said medium conveyance system;
- a movable member varying in position in accordance with movement of said medium while coming into contact with said medium;
- and
- a single sensor for sensing a position of said movable member to output a signal indicative of a passage of said medium and a discharge of said medium into said medium discharged section, a signal indicative of a fully accumulated condition of said media within said medium discharged section and a signal representative of an occurrence of a jam condition of said medium during the passage of said medium.
An image formation system comprising:
- a storage section for storing media;
- an image formation section for transferring an image onto each of said media for image formation;
- a medium discharged section for accumulating said media each having said image transferred in said image formation section and discharged thereinto;
- a medium conveyance system for drawing out each of said media from said storage section and further for discharging said medium into said medium discharged section after passing through said image formation section;
- a movable member varying in position in accordance with movement of said medium while coming into contact with said medium;
- and
- a single sensor for sensing a position of said movable member to output a signal indicative of a passage of said medium and a discharge of said medium into said medium discharged section, a signal indicative of a fully accumulated condition of said media within said medium discharged section and a signal representative of an occurrence of a jam condition of said medium during the passage of said medium.
Dependencies are inferred from the claim text.