Abstract: In apparatus for supplying ink and or water to a plate cylinder through fountain roller, swinging roller and a transfer roller, the transfer roller is supported by a swinging lever and the motion thereof is allowed or prevented by a spring biased control member. Such allowance and prevention is selected by an operating handle.

Abstract: A delivery apparatus for a sheet-fed printing press includes a detector, a control unit and a solenoid. The detector detects a moving amount of suction wheels moved by adjustment and generates a signal corresponding to the moving amount. The control unit is connected to the detector and a timing unit of the printing press and generates a signal representing a predetermined length corresponding to the sheet size. The solenoid is located between a powder container and an air source and opens an air path for only a time interval corresponding to the signal supplied from the control unit.

Abstract: In a valid patch discrimination method for an automatic density control apparatus, a density of a color bar printed on a paper is measured in units of colors, a predetermined calculation is performed based on the measurement result, and the calculation result is compared with a prestored value to discriminate a presence/absence of a valid color patch.

Abstract: A feeder for use in a sheet-feed printing machine, in which, while a pile board loaded with a paper sheet pile on a pallet is moved upward, paper sheets are fed to the printing unit through a side register lay, comprising a sensor movable along a threaded shaft according to the rotation of the threaded shaft to detect a side edge of the paper sheet pile, which is moved an amount equal to the distance in the cross or lateral direction between a position at which the paper sheet pile is to be positioned when a left-pulling side register lay is used and a position at which the paper sheet pile is to be positioned when a right-pulling side register lay is used, and further comprising a non-interrupting paper replenishing device to insert another paper sheet pile under the paper sheet pile, or detecting means to detect the remaining amount of paper sheets and the top surface of the paper sheet pile.

Abstract: An intaglio cylinder for effecting intaglio printing is disposed in contact with an impression cylinder and a blanket cylinder for effecting dry offset printing is disposed in contact with the intaglio cylinder. These cylinders are disposed such that a line interconnecting the axes of the impression cylinder and the intaglio cylinder will make an angle of about 90.degree. with respect to a line interconnecting the axes of the intaglio cylinder and the blanket cylinder. When printing with the printing press described above a method is used comprising the steps of forming an intaglio image on the intaglio cylinder, forming a dry offset image on the blanket cylinder, transferring the dry offset image on the blanket cylinder onto non-image portions of the intaglio cylinder, and simultaneously transferring the dry offset image and the intaglio image on the intaglio cylinder onto a sheet wrapped about the impression cylinder.

Abstract: In a wiping apparatus for an intaglio printing press, a piston rod actuating end of a fluid pressure cylinder is pivotally coupled to each eccentric bearing for supporting the wiping roller, and the fluid pressure cylinder is supported by an adjusting mechanism for slightly moving in an extendable direction of the piston rod. A doctor blade holding member and a press-side support member are coupled by a plurality of fixing screws. The support member is reciprocally supported relative to the press side in an attachment/detachment direction of the doctor blade. The eccentric bearings and both ends of the support member are coupled by cam mechanisms for interlocking pivotal movement of the eccentric bearings with reciprocal movement of the support member. A doctor blade contact pressure fine-adjusting mechanism reciprocates the holding member with respect to the support member. Belleville springs are inserted between heads of fixing screws and the doctor blade holding member.

Abstract: There is disclosed a measurement position synchronization method applied to a scanning densitometer to photoelectrically scan a control strip comprising a plurality of color patches of respective colors printed on a paper to thereby calculate densities of the color patches every respective colors. This method comprises: the steps of responding to a measured values obtained by scanning a color patch of a specified color to calculate points which have varied respectively by predetermined values on the side of a reference level included in the measured values; determining the intermediate point of the both points calculated to be an actual measurement central point of the color patch of the specified color; and carrying out synchronization of measurement positions in accordance with a difference between a scheduled central point and the actual measurement central point.

Abstract: In a delivery safety apparatus for a sheet-fed printing press, regardless of the operation mode of the delivery table lifting unit, a delivery table is automatically moved downward on the basis of a detection result from a pile height detecting means for detecting a sheet pile height exceeding a predetermined position for sheets delivered and stacked on the delivery table. If automatic descending of the delivery table is not started even when a predetermined period of time has elapsed, this abnormal state is detected, and an alarm is generated. When automatic descending is not yet started when another predetermined period of time has elapsed after the alarm is generated, this abnormal state is detected to interrupt delivery of sheets onto the delivery table.

Abstract: A printing apparatus which is provided with an integral rotary shaft supported on the main unit's frames, a numbering device, a relief imprinting cylinder, and a coating cylinder which are detachably and alternatively mounted on the rotary shaft from its periphery, and an ink unit and a coater unit, thereby enabling coating operations as need in addition to numbering and imprinting operations.

Abstract: In a slip sheet insertion-delivery apparatus, a plurality of printing sheet grippers opposite to some of a plurality of gripper pads mounted on a gripper pad shaft and slip sheet grippers opposite to the remaining gripper pads are mounted on one gripper shaft. The slip sheet grippers are loosely fitted on the gripper shaft through corresponding torsion springs. A cam mechanism is arranged to simultaneously open/close the printing and slip sheet grippers near a cylinder. Another cam mechanism including a plurality of cams is arranged to simultaneously open/close only the slip sheet grippers at a slip sheet insertion position.

Abstract: A sheet conveyance table for a sheet rotary press disposed in a gap between a plurality of conveyance tapes conveying a sheet fed from a sheet feeder and a feed board. The sheet conveyance table is constituted by stays suspended in the gap perpendicular to the sheet conveyance direction; a pair of support tables, supported at two end portions of the stays, and a plurality of sheet receiving members. The pair of support tables are movable in a widthwise direction of the rotary press to adjust for sheets received from the conveyance tapes having different widths. The support tables also support side registering devices which align one side of the sheet as it passes over the sheet conveyance table. The sheet receiving members are formed by a thin plate material having a substantially U-shape when viewed from the top and are arranged along the stays so that their widths are increased when the support tables are displaced away from each other and reduced upon movement of the support tables towards each other.

Abstract: A side lay position control apparatus for a sheet-fed printing press, includes a switch for setting a distance from a reference point of the sheet-fed printing press to a side lay and a fine adjustment length with reference to the distance, a CPU for calculating an actual distance from the reference point to the side lay in accordance with the distance from the reference point to the side lay and the fine adjustment length, and a driver for moving the side lay in accordance with the actual distance.

Abstract: An abnormal sheet detecting unit for conventional sheet fed rotary printing presses. This unit includes either a double-diameter cylinder or a support plate which is in contact with a traveling printed sheet in order to keep the sheet taut. The unit further includes a detecting apparatus, arranged above, respectively, the double-diameter cylinder or the support plate, for detecting a printing density of the taut printed sheet.

Abstract: A cylinder apparatus of a sheet-fed rotary printing press having grippers which are pivotally supported inside a notch in a blanket cylinder brought into rolling contact with a plate cylinder and which is located in a vicinity of the leading edge of a printing plate on the plate cylinder, wherein phases of rotation of the plate and blanket cylinders are arranged such that the leading edge of the printing plate opposes a front end of the notch formed in the blanket cylinder which is located at a slightly advanced position with respect to a leading edge of the blanket, and a cam surface of a cam for opening/closing the grippers is shaped in such a manner that the grippers are kept opened when the leading edge of the printing plate opposes the front end of the notch formed in the blanket cylinder.

Abstract: An inking device for a printing apparatus, comprising a form roller disposed in the printing apparatus main unit parallel to a printing shaft and rotatably contacting with the outer peripheral surface of a printing member mounted on the printing shaft, and an ink feed unit detachably mounted on the printing apparatus main unit and having a distributor roller rotatably contacting the outer peripheral surface of the form roller to supply the form roller with ink when the ink feed unit is mounted on the printing apparatus main unit, which can always provide an adequate nip pressure irrespective of movement of the printing shaft or mounting/removal of the ink feed unit.

Abstract: In a suction member fixing apparatus for a sheet-fed printing press, two side plates are pivotally fitted on two end shafts of a double-diameter cylinder so that the surfaces of the side plates are in contact with end faces of the cylinder body. A fixing shaft having a head portion at one end and a threaded portion at the other end extends through central axial holes of the cylinder body and the two end shafts. Press rods radially extend through base portions of the two end shafts, are in contact with end faces of the side plates opposite to the cylinder body, and are moved upon threadable engagement of a screw member with the threaded portion to fix the side plates and the cylinder body by a surface pressure. Belleville springs are interposed between one press rod and the screw member to absorb extension of the fixing shaft due to an increase in temperature during printing.

Abstract: In a sheet turn-over apparatus for a sheet-fed rotary printing press, the right cams are a turn-over cam for gripper units A and opening/closing cams for gripper units B, while the left cams are a turn-over cam for gripper units B and opening/closing cams for gripper units A. The cams cooperate with the corresponding torsion bars arranged at the pivotal centers of cam levers to turn over and open/close the gripper units A and B. The cams are fixed at predetermined positions of frames and need not be shifted in the single side printing and double side printing. The gripper opening/closing cams need not be shifted in the non-turn-over and turn-over modes.

Abstract: A varnishing apparatus for a printed sheet includes: a metering roller, to a peripheral surface of which a varnish from a varnish duct is transferred; a form roller which is brought into contact with a downstream side of the metering roller and is rotated in the same direction as that of the metering roller to allow transfer of the varnish from the metering roller; and a rubber blanket cylinder which is brought into contact with a downstream side of the form roller and is rotated in a direction opposite to that of the form roller to allow transfer of the varnish from the form roller, the rubber blanket cylinder having a notch on its outer peripheral portion and transferring the varnish onto a sheet which is in contact with its peripheral surface. The surface of the metering roller is formed of an elastic material having a roughened surface.

Abstract: An abnormal-paper sensing apparatus in a printing machine which senses the presence of a front folded corner of a sheet of printing paper. The sheet of paper hits against front lays provided at a front end of an insertion guide plate and stops. The insertion guide plate has a pair of recesses provided in a front end portion thereof so as to extend thereacross at positions where the recesses can face the front corners of the sheet of paper which passes over the recesses. The recess have a triangular cross section with a longer side positioned on the side of the front end of the insertion guide plate and with a shorter side positioned on the side of the rear end of the insertion guide plate.

Abstract: In a phase adjusting apparatus for a sheet-fed printing press for adjusting a relative phase in a rotational direction between a paper sheet feeder and a printing apparatus which are coupled through a chain, a sprocket is in internal contact with a tension side of the chain and is axially supported by a slide base. The slide base is supported to be movable in a direction substantially perpendicular to an extension direction of the tension side of the chain. A slide base driving apparatus is arranged on a press frame. A tension sprocket which is biased in a tension direction of the chain by compression coil springs so as to be in contact with a slack side of the chain.