Patent ID: 6120015
Filing Date: 2000-09-19
Classification: B26D,B26F,G03G,Y10T

Abstract:
In an on-line sheet hole punching system operatively associated with a sheet printing system for punching holes in the flimsy unpunched sheets being printed by said sheet printing system, to avoid pre-punched sheets in said printing system, the improvement comprising:a common sheet entrance path for said unpunched sheets printed by sheet printing system,two separate but adjacent and generally parallel sheet paths,a sheet path gating system for alternately gating said unpunched sheets in said sheet entrance path into a selected one of said two separate sheet paths,two separate sheet punching stations, each in one of said two separate sheet paths, having driveable sheet punches for punching holes in said unpunched sheets in said two separate sheet paths alternatingly while said sheets are alternatingly stopped in said two separate sheet paths,said two separate sheet paths respectively feeding said sheets from said sheet entrance path and said sheet path gating system to said respective sheet punching stations for said alternating punching of holes in the sheets of said two separate sheet paths to avoid interruptions in said sheet printing system by said on-line sheet hole punching system.