Binding device and image forming apparatus including the same
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United States of America Patent
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Mar 13, 2018
Grant Date -
Feb 11, 2016
app pub date -
Jul 28, 2015
filing date -
Aug 11, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
According to an aspect of the invention, a binding device includes a first rotary member including a first serrated portion on its circumferential surface, a second rotary member including, on its circumferential surface, a second serrated portion to be engaged with the first serrated portion at an engaging position and configured to perform a binding process by rotating together with the first rotary member with a bundle of sheets pinched therebetween to form serrations in the sheet bundle in thickness direction and bring the sheets into engagement with each other while relatively moving the sheet bundle in a predetermined moving direction, and a clamping unit configured to, when the binding process is performed, clamp the sheet bundle at a clamping position upstream of the engaging position to apply a predetermined pulling force acting in a direction opposite to the moving direction to the sheet bundle.
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