Sheet conveying apparatus and image forming apparatus
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United States of America Patent
Stats
-
Apr 23, 2013
Grant Date -
May 6, 2010
app pub date -
Oct 29, 2009
filing date -
Nov 6, 2008
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A sheet conveying apparatus in which a sheet is abutted on a stopped registration roller to correct skew feeding, including: a sheet detecting portion, a first stepping motor and a second stepping motor. The conveying roller is controlled to tentatively stop the sheet, the conveying roller is driven prior to the start of the drive of the registration roller, the registration roller is driven after a loop of a predetermined amount is formed in the sheet, the conveying roller is driven at a sheet conveying speed that is equal to or lower than a sheet conveying speed of a self-start frequency when the conveying roller forms the loop in the sheet, rotation of the first stepping motor being able to be started at the self-start frequency, and acceleration of the registration roller and acceleration of the conveying roller are started after the loop of the predetermined amount is formed.
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