Sheet finishing apparatus
First Claim
Patent Images
1. A sheet finishing apparatus for post-processing sheets of paper after image forming, comprising:
- a pair of paper supply rollers configured to receive and convey sheets of paper ejected from an image forming apparatus;
a standby tray configured to make said sheets of paper ejected from said paper supply rollers stand by;
a processing tray arranged under said standby tray and configured to load said sheets of paper dropped and supplied from said standby tray and/or said sheets of paper ejected from said image forming apparatus not via said standby tray;
a processing mechanism configured to post-process said sheets of paper loaded on said processing tray;
a paper ejection tray configured to load said post-processed sheets of paper ejected from said processing tray;
a standby tray guide extending over the standby tray and configured to control movement and posture of said sheets of paper ejected from said paper supply rollers to said standby tray, the standby tray guide being born rotatably on a side of said standby tray and a front end of the standby tray guide being rounded so as to crush upward curls of said sheets of paper; and
an assist arm configured to prevent a rear end side of said sheets of paper conveyed from said paper supply rollers from rising and to press the rear end of said sheets of paper to the standby tray, a side of said assist arm in contact with said sheets of paper having a weight heavier than a weight of the sheets of paper to prevent the sheets of paper from unexpected movement,wherein said standby tray is composed of at least a pair of tray members for respectively supporting both sides of said sheets and configured to slide and move said tray members to drop and feed said sheets onto said processing tray.
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Abstract
In a sheet finishing apparatus of the present invention, when temporarily loading a plurality of sheets of paper on a standby tray until a processing tray finishes processing, to prevent a sheet of paper loaded first from being pressed out by a sheet of paper ejected later, a chuck for retaining the rear ends of the sheets of paper is installed on the downstream side of the standby tray, and for curled sheets of paper, a standby tray guide and an arm member for suppressing curling of the central part of the sheets of paper are installed, thus matching on the standby tray is stabilized.
83 Citations
18 Claims
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1. A sheet finishing apparatus for post-processing sheets of paper after image forming, comprising:
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a pair of paper supply rollers configured to receive and convey sheets of paper ejected from an image forming apparatus; a standby tray configured to make said sheets of paper ejected from said paper supply rollers stand by; a processing tray arranged under said standby tray and configured to load said sheets of paper dropped and supplied from said standby tray and/or said sheets of paper ejected from said image forming apparatus not via said standby tray; a processing mechanism configured to post-process said sheets of paper loaded on said processing tray; a paper ejection tray configured to load said post-processed sheets of paper ejected from said processing tray; a standby tray guide extending over the standby tray and configured to control movement and posture of said sheets of paper ejected from said paper supply rollers to said standby tray, the standby tray guide being born rotatably on a side of said standby tray and a front end of the standby tray guide being rounded so as to crush upward curls of said sheets of paper; and an assist arm configured to prevent a rear end side of said sheets of paper conveyed from said paper supply rollers from rising and to press the rear end of said sheets of paper to the standby tray, a side of said assist arm in contact with said sheets of paper having a weight heavier than a weight of the sheets of paper to prevent the sheets of paper from unexpected movement, wherein said standby tray is composed of at least a pair of tray members for respectively supporting both sides of said sheets and configured to slide and move said tray members to drop and feed said sheets onto said processing tray. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A sheet finishing apparatus for post-processing sheets of paper after image forming, comprising:
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means for receiving and conveying sheets of paper ejected from an image forming apparatus; means for making said sheets of paper ejected from said means for receiving and conveying sheets stand by; means for loading said sheets of paper dropped and supplied from said means for making sheets standby and/or said sheets of paper ejected from said image forming apparatus not via said means for making sheets standby, arranged under said means for making sheets means for post-processing said sheets of paper loaded on said means for loading sheets; means for loading said post-processed sheets; means for controlling movement and posture of said sheets of paper ejected from said means for receiving and conveying sheets to said means for making sheets standby, extending over said means for making sheets standby and born rotatably on a side of said means for making sheets standby, having a front end thereof being rounded so as to crush upward curls of said sheets of paper; and means for preventing a rear end side of said sheets of paper conveyed from said means for receiving and conveying from rising by pressing rear ends of said sheets of paper to said means for making sheets standby, a side of the means for preventing a rear end side of said sheets of paper from rising being in contact with said sheets of paper and having a weight heavier than a weight of the sheets of paper to prevent the sheets of paper from unexpected movement, wherein said means for making sheets standby is composed of at least a pair of tray members for respectively supporting both sides of said sheets and slides and moves said tray members to drop and feed said sheets onto said means for loading sheets. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification