US 6,826,374 B2Granted

Sheet processing apparatus with discharge sheet cover and control based on open/close state of cover

AssigneeCanon Kabushiki Kaisha

InventorsHitoshi Kato, Yuji Morishige, Norifumi Miyake, Yasuo Fukazu, Yuzo Matsumoto, Yusuke Obuchi

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Abstract

A sheet processing apparatus has a sheet conveyor and sheet processing unit for performing a predetermined process to the sheet conveyed by that sheet conveyor. A sheet discharger discharges the processed sheet to a stacking unit, the unit having a cover which may be opened or closed and which includes a detector for detecting whether or not the cover is opened and closed, and a controller will immediately stop, in a case where the discharge process to the sheet that is performed by the discharge unit, driving of the sheet discharge unit and sheet conveyor when it is detected that the cover is opened and for continuing, in a case where the discharge process to the sheet is not performed by the sheet discharge unit, the driving of the sheet conveyor in spite of the detection that the cover is open.

Claims4

Dependent claims

A sheet processing apparatus comprising:

sheet conveying means for conveying a sheet;
sheet processing means for performing a predetermined process to the sheet conveyed by said sheet conveying means;
sheet discharge means for performing a discharge process to the sheet processed by said sheet processing means;
stack means for stacking the sheets discharged by said sheet discharge means;
cover means for covering said stack means;
open/close detecting means for detecting whether said cover means is opened or closed;
and
control means for immediately stopping, in a case where the discharge process to the sheet is performed by said sheet discharge means, driving of said sheet discharge means and said sheet conveying means according to the detection by said open/close detecting means that said cover means is opened, and for continuing, in a case where the discharge process to the sheet is not performed by said sheet discharge means, the driving of said sheet conveying means even when the detection by said open/close detecting means is that said cover means is opened.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 10/230,224Filed 29 Aug 2002
Priority: JP 2001-26412931 Aug 2001
Published: US 2003/0044186 A16 Mar 2003
Granted: 30 Nov 2004
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

G03G 15/6538
Apparatus which relate to the handling of copy material: devices for collating sheet copy material, e.g. sorters, control, copies in staples form
B65H 43/00
Use of control, checking, or safety devices
B65H 2301/42142
Of articles on edge: by introducing articles from beneath
B65H 2511/514
Presence: particular portion of element