Patent Number: 6,305,262

Title: Sheet punch device and a sheet punch method

Abstract: A sheet punch device including a punch member having a rotatable punch and a die pair that punches a hole in a sheet, a driving member that drives and rotates the punch member to punch a hole in a conveyed sheet, and in which the punch member punches holes in the conveyed sheet at plural places aligned in a sheet conveying direction. The sheet punch device further includes a sheet detecting member that is disposed upstream of the punch member in the sheet conveying direction and that detects a leading edge of the sheet being conveyed. Also included is a control device that controls the driving member such that the punch member punches a predetermined number of holes in the conveyed sheet sequentially at predetermined positions aligned in the sheet conveying direction at a predetermined time after the sheet detecting member detects a leading edge of the conveyed sheet.

Inventors: Watanabe; Tetsuji (Chiryu, JP)

Assignee: Ricoh Company, Ltd.

International Classification: B26F 1/04 (20060101); B26D 7/26 (20060101); B26F 1/02 (20060101); B26D 5/32 (20060101); B26F 1/10 (20060101); B26D 5/20 (20060101); B26F 001/04 ()

Expiration Date: 10/23/2018