Ryobi Limited

Masazumi Hidera

Masamichi Sasaki

Yoshihiro Yasuhara

Kiyomi Utsumi

A sheet aligning device includes first and second aligning plates disposed on opposite lateral sides of the feeder board, the first and second aligning plates being capable of being reciprocatingly moved in a direction orthogonal to a sheet conveying direction and each having a sheet abutting surface parallel to the sheet conveying direction, an input member for inputting a sheet width, and a controller for controlling the first and second aligning plates so that the first aligning plate is moved, based on the inputted sheet width, to allow the sheet abutting surface thereof to be brought into abutment with a first lateral side of each sheet, thereby laterally aligning the sheet, and the second aligning plate is moved, based on the inputted sheet width, to allow a second lateral side of each sheet close to the second aligning plate to pass through a sheet-lateral-side passing zone on the second aligning plate. The sheet-lateral-side passing zone is located closer to the axis or centerline of the sheet than the sheet abutting surface is and has a flat surface throughout the sheet conveying direction.

Sheet aligning device of a printing press and method of controlling the same

A leading edge side part,of a printing plate,can easily be inserted into a gap L,formed between a plate guide,positioned adjacent to positioning pins,and a leading edge side clamping base,because the gap L,is formed in a thickness slightly thicker than the printing plate,. Restoring force caused by flexure of the printing plate,allows the leading edge side part,thereof being inserted into the gap L,, the restoring force being generated when a tail edge side part,of the printing plate,is in contact with a contact member

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Fuchu, Japan

Masazumi Hidera