Abstract: A sheet processing apparatus includes a hole punching section arranged orthogonally to a conveying path of a sheet, a moving mechanism which moves the hole punching section along a direction orthogonal to the conveying path, a detection unit which is arranged upstream from the hole punching section and which moves by being interlocked with the hole punching section and detects a lateral edge of the sheet conveyed thereto, and a control unit which controls the moving mechanism in accordance with the result of detection by the detection unit and varies the position of the hole punching section, thus controlling the punching processing position.

Abstract: A stamping device, which in particular is arranged for stamping unfired ceramic substrates, has a die holder device with a plurality of dies, which for activation can be locked to the die holder device and then jointly with it execute an axial stamping motion. A coupling device which is remote-actuated is used for the locking. For the remote transmission of the actuation motion, a flexible mechanical connecting arrangement is used, such as preferably a cable.

Abstract: A sheet perforation apparatus of which number of parts is reduced is provided. Operation pins 251 of punches 250 penetrate pin penetration apertures 221a, 222a and engage guide grooves 210b, 211b formed at sliders 210, 211. The guide grooves 210b, 211b are formed by three groove portions of an upper horizontal groove portion, an inclined groove portion and a lower horizontal groove portion. The sliders 210, 211 are fixed to a slide holder 201 having an engagement pin 202 which engages a cam groove 287a formed at a shaft 287. By rotating a motor 280 normally, the operation pins 251 slide the inclined groove portion so that the punches 250 advance to a perforation position to conduct perforation processing of two holes, and by rotating the motor 280 reversely, the punches 250 conduct perforation processing of three holes. The sliders 210, 211 are common regardless of the number of the punches 250.