Sheet conveyance device, and image forming apparatus and image reading unit including same
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United States of America Patent
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May 21, 2013
Grant Date -
May 17, 2012
app pub date -
Nov 10, 2011
filing date -
Nov 11, 2010
priority date (Note) -
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status (Latency Note)
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Abstract
A sheet conveyance device includes a loading section, a first conveyance member a separation section, a first sheet length detector to detect whether the sheet is longer than a predetermined length slightly longer than a specific sheet size in the sheet conveyance direction, a trailing-edge detector disposed downstream from the separation section, a leading-edge detector disposed downstream from the trailing-edge detector a distance smaller than the specific sheet size and from the first conveyance member a distance longer than the specific sheet size, and a controller. When the sheet is equal to or greater than the predetermined length, the controller starts sheet feeding when the trailing-edge detector detects the trailing edge of the sheet, and when the sheet is smaller than that, the controller starts sheet feeding when either the leading-edge detector detects the leading edge of the sheet or the trailing-edge detector detects the trailing edge thereof.
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