Patent ID: 8240656
Filing Date: 2012-08-14
Classification: B65H,G03G

Abstract:
1. A paper feeding device comprising: plural sensors arranged in a direction orthogonal to a sheet conveying direction and configured to detect the width of a sheet, a first detecting unit configured to detect whether a sheet is set in a predetermined position if at least one of the plural sensors is turned on; a second detecting unit configured to detect whether a sheet removal and setting is performed if at least one of the plural sensors changes from ON to OFF and further changes to ON within a predetermined time in which the sheet is removed after the setting of the sheet is detected by the first detecting unit and set again in the predetermined position; a switching unit configured to switch information concerning a series of a sheet size to a first series or a second series which is different from the first series when the sheet removal and setting is detected by the second detecting unit; and an indicating unit configured to indicate whether a sheet size is the first series or the second series on the basis of the information concerning the series of the sheet size, and configured to indicate the series switched as a sheet size when the information concerning the series of a sheet size is switched by the switching unit after the sheet removal and setting is detected by the second detecting unit.