Punching device, image forming apparatus, and punching method
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United States of America Patent
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Jul 17, 2018
Grant Date -
Oct 8, 2015
app pub date -
Apr 2, 2015
filing date -
Apr 4, 2014
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A punching device includes a punching unit, a driving unit, an edge detecting unit, a punching position setting unit, and a punching controlling unit. The punching unit punches three holes in a transported sheet along its transport direction. The driving unit moves the punching unit in an orthogonal direction. The edge detecting unit detects, in at least two locations separated from each other in the transport direction, an edge position of an edge of the sheet on one side in the orthogonal direction. The punching position setting unit sets a punching position corresponding to a hole to be punched by the punching unit in the orthogonal direction, on the basis of an amount of change in the orthogonal direction between the two edge positions. The punching controlling unit causes the punching unit to move to the punching position and punch a hole in the sheet.
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