Abstract: A web-fed, multicolor, offset printing press having a plurality of printing units for printing different-color images on a continuous web of paper. Each printing unit includes a three-part plate cylinder rotatably supported between a pair of confronting framing walls. The plate cylinder is split into three parts which each have two newspaper pages width. The three parts of the plate cylinder are each capable of adjustable displacement both laterally and circumferentially of the plate cylinder for registration. Lateral and circumferential adjustments for the three parts of the plate cylinder are all mounted outside the framing walls.

Abstract: A web-fed, multicolor, offset printing press having a plurality of printing units for printing different-color images on a continuous web of paper. Each printing unit includes a three-part plate cylinder rotatably supported between a pair of confronting framing walls. The plate cylinder is split into three parts which each have two newspaper pages width. The three parts of the plate cylinder are each capable of adjustable displacement both laterally and circumferentially of the plate cylinder for registration. Lateral and circumferential adjustments for the three parts of the plate cylinder are all mounted outside the framing walls.

Abstract: A web width adjusting device comprises a pressure force applying unit for applying pressure force to one side surface of a paper web which is successively traveled through two or more printing sections. Further the web width adjusting device may also include a counter pressure applying unit to apply counter pressure to the other side surface of the paper web. The pressure applying unit (and the counter pressure applying unit) deformes the paper web in a wavy surface which causes the width of the paper web to be shortened. The adjusting factors for the web width are controlled by automatic control system which detects traveling condition of the paper web, the generation of shears in printing, etc.

Abstract: A tower type multi-color printing press has heating means which is constructed in compact and simple in structure to require lesser space for installation, to lower production cost, to facilitate inspection and maintenance and to reduce frequency of occurrence of failure. The tower type multi-color printing press includes a plurality of printing sections provided with stacking in vertical direction, and heating means provided on downstream side of each printing section and extending in a width direction of a paper web fed through a path across each printing section, for heating a printed surface of the paper web every time completing the printing in each printing section.

Abstract: A rotary press can vary the order of piling of printed traveling webs freely without requiring the bay window device to the construction and thus contributes for reducing size and weight of the rotary press. Also, the rotary press may facilitate repairing and maintenance operation so that repairing of each unit, maintenance, cleaning or so forth can be done certainly and quickly. The rotary press includes printing units and a folding unit arranged in parallel and further comprises moving means for re-arranging at least two of the units among set units and/or orientation means for turning at least one of the unit over 180.degree..

Abstract: A device for adjusting an ink supply gap is employed in an ink fountain apparatus in which the bottom portion of the ink fountain apparatus forms a space for storing ink in cooperation with a peripheral surface of an ink fountain roller while a forward edge of the bottom portion faces the peripheral surface of the ink fountain roller in order to form a gap serving as an ink supply port. The device for adjusting an ink supply gap includes a plurality of blade segments and a plurality of ultrasonic linear motors corresponding to the blade segments. The blade segments are disposed on a base in a row extending in the axial direction of the ink fountain roller and are adapted to individually advance toward or retract from the ink fountain roller so as to adjust the opening of the ink supply port. The ultrasonic linear motors are adapted to individually advance or retract the corresponding blade segments.

Abstract: In order to enable a rotary press having a plurality of printing units capable of printing on a paper web drawn out of a roller sheet of paper to operate in an increased working efficiency, to be saved in space and to be small sized, there is provided a construction thereof in which a space is provided which is substantially identical to a space that is required to accommodate a single roll of paper of a predetermined diameter, in each of one half or less (3) of the said plurality of printing units; a means (30) is provided for supporting, in the said substantially identical space, a plurality of rolls of paper (W21, W22) each with a diameter that is smaller than the said predetermined diameter, the said means being operable so that the said plurality of rolls of paper may be joined together in succession automatically; and further there is provided, in the said substantially identical space and at a site that is adjacent thereto, a means (50) supported on the said supporting means (30) for joining the said p

Abstract: A positioning apparatus and method for synchronously controlling a plurality of motors, such as servo motors, and exercises synchronous control by means of only motors without using any mechanisms, such as coupling shafts, clutches, gears and cams. A controller has a virtual drive capability which provides a virtual cam and virtual clutch capability on the basis of stored values, permitting continuous and repeated operation of a single cycle of positioning with respect to changes in input axis position address data without recalculation of command addresses in real time.

Abstract: A control apparatus for a servo system uses a servo motor to perform operations equivalent to those of a cam mechanism. A motion command section has two data tables which are used to calculate and output a position command and a velocity compensation command equivalent to a cam stroke. A servo drive section makes velocity compensation and current compensation on the basis of position and velocity compensation commands. The motion command section, alternatively, may have three data tables for the calculation of the compensation commands. In addition, multipliers are used to adjust the weight of the compensation commands. Rather than the data tables being present in the motion command section, they may be placed in the servo drive section. Formulae representing the mechanical characteristics of the cam system may be used in place of the data tables.

Abstract: Disclosed is an ink supplying apparatus which can drive and rotate a fountain roller at an arbitrary speed independently of the peripheral speed of a roller adjacent to the fountain roller when an ink fountain is fitted to a rotary press, which does not require large-scale maintenance and inspection, which is free from any danger, and which is equipped with an ink fountain having a fountain roller capable of being fitted to and removed from a suitable position corresponding to a maximum printing width.