Sharp Kabushiki Kaisha Corporation

Hiroshi Moriyama

Naofumi Okada

Shinji Kawamura

Yoshihalu Fujii

Yukitoshi Fujita

Tatsuya Utsumi

Tetsuya Itoh

A shredding machine has a rotary cutter and a fixed cutter. The rotary cutter includes a cutter part with a spiral cutting edge and a flute, and a column part for rotatably holding by a holding member for rotation of the rotary cutter. The fixed cutter has a cutting edge contacting with the cutter part of the rotary cutter. In rotating the rotary cutter, longitudinal slips of documents are fed between the cutters so that the documents enter the flute of the rotary cutter to cut the slips into chips by cooperation between the cutting edge of the rotary cutter and the cutting edge of the fixed cutter.

Shredding machine

An automatic paper feeder for use in a document shredder includes a paper feeding table for receiving, a large number of paper sheets to be shredded in a stack, a feeding roller for feeding the paper sheets to be shredded on the paper feeding table, a set of shredding blades, and a driving device for driving the feeding roller for rotation. The rotational peripheral speed of the feeding roller are set larger than the speed of the shredding blades.

Automatic paper feeder for document shredder

A paper feeding system of a paper shredder comprises a paper set block provided in the shredder main body; a paper feed opening formed at the end of the paper set block on the side of the shredding cutter; a paper transport device for sending papers automatically through the paper feed opening to the shredding cutter; an openable cover for shielding the paper set block and the paper feed opening; a locking device for locking the cover in the closed position; and a paper insertion opening allowing papers to be input into the paper set block without opening the cover.

Growing community of inventors

Yamatokoriyama, Japan

Hiroshi Moriyama