Abstract: A device and method for treating the end portion of a paper from a paper roll mounted on a paper feed unit of a paper processer. The device arranged adjacent the paper roll is moved toward the paper roll until a presser roller mounted on the device is pressed against it. A cutter assembly facing the paper roll is pushed out so that its cutter will come into contact with the periphery of the paper roll. The cutter is then slid transversely from one end of the paper roll to the other to cut several turns of paper from the paper roll as broke. The broke is rolled out to be fed downwardly over a suction body through a pair of nip rollers and taken up by a take-up mechanism. Another cutter assembly is pushed forward into contact with the central part of the paper end rolled out together with the broke and moved widthwise to make a center cut in the paper end. A cavity forming device is then pressed against the paper end right under the center cut to form a square cavity there.

Abstract: A mechanism for adjusting the vertical position of a format on a printing press is proposed which makes use of the rotation of a blanket cylinder. A pair of pawls engage and disengage with a pair of ratchet wheels, which turn when a pawl support plate turns by a preset angle with respect to the blanket cylinder. The rotation of the ratchet wheel is transmitted to the format cylinder, so that the vertical position of a format is adjusted.

Abstract: Mechanism for correcting the twist of a plate on a printer without removing the plate from a plate cylinder is proposed. A bracket having claws for holding one end of the plate is supported on a block with pins on the block received in oblique grooves formed in the bracket. When the block moves axially, the bracket will be skewed because it is prevented from moving axially. Accordingly the plate is skewed in such a direction as to eliminate any twist.

Abstract: A printer-slotter having a blank feed unit, at leas tone printing unit and a creaser/slotter unit for printing, creasing and slotting the blanks fed one after another, the units each having a rotating member and arranged along the flow of the blanks and so as to be separable from each other, the printer-slotter comprising:a reference signal operator for generating a reference signal and giving it to each of said units,each of said units comprising:a speed variable motor for driving said rotating member;a zero point sensor for detecting a zero point marked on said rotating member;initial phase setting device for setting the initial phase of said rotating member of each unit on the basis of data obtained beforehand and in response to the signal from said zero point sensor;a speed detector for detecting the speed of said variable motor and generating a speed signal proportional to its speed;a phase detector for detecting the phase of said rotating member an generating a phase signal proportional to its phase; an

Abstract: An improved paper feeder for use with a printing machine includes a suction head which moves up and down by suction force and moves forward and backward by action of a cam. The paper feeder further includes an arrangement for controlling the height of the paper table.

Abstract: An apparatus for effecting secondary printing in the course of paper delivery in addition to primary printing achieved within the body of an offset printing machine comprises a delivery mechanism, a mechanism provided with a printing couple for performing secondary printing, a mechanism for applying printing pressure and a mechanism for arranging paper sheets.