Abstract: A paper feed device for use with a rotary press for printing newspapers includes a plurality of guide rails connected together so as to extend along any of different paper feed paths. A linear member is inserted into the guide rail so as to be fed through guide rails extending along a predetermined paper feed path. A lever has its one end secured to one side of the linear member and is provided at its other end with a clip for detachably engaging a paper coupling adaptor holding the leading end of a web of a paper roll stored in a paper feed unit of the rotary press. The linear member is moved along the guide rails by pairs of driving and driven wheels arranged at equal intervals along the guide rails. The linear member has a length slightly larger than the distance between the adjacent pairs of wheels.

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 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