Miyakoshi Printing Machinery Co., Ltd.

Noritaka Yamaoka

Toshiaki Kishine

Hideo Izawa

Toshikazu Yamada

In a printing apparatus for performing a printing operation on both obverse and reverse surfaces of a continuous web paper with an ink jet printing machine, there is a construction having a first printing unit for printing on one surface of the continuous web paper and a second printing unit for printing on the other surface of the continuous web paper, in which the first printing unit and the second printing unit are arranged at an identical position in respective paths of travel of a first portion and a second portion of the continuous web paper as oriented in parallel to each other, as facing downwards and as shifted to each other in the direction perpendicular to directions in which the first portion and the second portion of the continuous web paper are traveling, and the path of travel of the first portion of the continuous web paper which is printed by the first printing unit and the path of travel of the second portion of the continuous web paper which is printed by the second printing unit are made continuous via a turning unit for turning the continuous web paper at a right angle twice therein.

Printing apparatus and method for performing a printing operation on

A paper folding apparatus for a form printing machine includes an automatic paper cutting device having a cutting cylinder, which is disposed on an upstream side of an oscillatory shooter assembly, and which is adapted to form a cross line of cuts interposed by at least one small uncut portion in a continuous web of paper. The cutting cylinder is synchronously rotated with the paper for forming the cross line of cuts in response to a signal detected according to a predetermined length of travel of the continuous web of paper. The apparatus also includes a supporting device disposed on the oscillatory shooter assembly which supports a nozzle roller so that the nozzle roller may be moved to a first position which is displaced either toward or away from a counter roller so as to enable the continuous web of paper to slidingly travel between the two rollers, and a second position wherein the paper is intensively pressed against the counter roller so that the paper is prevented from sliding between the two rollers. The apparatus also includes an operating device which is disposed on the oscillatory shooter assembly which moves the nozzle roller supported by the supporting device from the first position to the second position when the cross line of cuts formed by the cutting cylinder arrives on the upstream side of and immediately before the nozzle roller.

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Shiroi-machi, Japan

Noritaka Yamaoka