Proof printing press

A proof printing press comprising:

• a plate cylinder rotatably supported and including, on an outer circumference thereof, a working surface on which an intaglio printing plate is mounted;
• an impression cylinder rotatably supported to face the plate cylinder and including, on an outer circumference thereof, a working surface configured to hold a sheet;
• a collecting cylinder rotatably supported to face the plate cylinder and including, on an outer circumference thereof, a working surface on which a blanket is mounted;
• a plurality of chablon cylinders disposed along a circumferential direction of the collecting cylinder, rotatably supported to face the collecting cylinder, and including, on outer circumferences thereof, working surfaces on which segment plates are mounted;
• a plurality of form rollers rotatably supported to face the chablon cylinders, respectively;
• a plurality of ink supplying means for supplying inks to the form rollers, respectively;
• and
• wiping means disposed to face the plate cylinder between a facing position where the plate cylinder faces the collecting cylinder and a facing position where the plate cylinder faces the impression cylinder, the wiping means being for removing ink on a surface of the intaglio printing plate of the plate cylinder, wherein
• the plate cylinder has a size of a multiple cylinder large enough to mount thereon a plurality of the intaglio printing plates aligned in the circumferential direction, while the number of the working surface is only one,
• the chablon cylinders is single-size cylinders,
• the chablon cylinders rotates a plurality of time, while the plate cylinder rotates once,
• the impression cylinder, the collecting cylinder, and the wiping means are positioned relative to the plate cylinder such that
• a length of the outer circumference of the plate cylinder at a downstream side of the facing position P1 in a rotation direction of the plate cylinder is longer than a length in a circumferential direction of the working surface of the plate cylinder, where the length of the outer circumference of the plate cylinder extends between the facing position P1 where the plate cylinder faces the collecting cylinder and a facing position P2 where the plate cylinder faces the wiping means, and
• a length of the outer circumference of the plate cylinder at a downstream side of the facing position P2 in the rotation direction of the plate cylinder is longer than the length in the circumferential direction of the working surface of the plate cylinder, where the length of the outer circumference of the plate cylinder extends between the facing position P2 where the plate cylinder faces the wiping means and the facing position P3 where the plate cylinder faces the impression cylinder,
• rotation phases of the collecting cylinder and the chablon cylinders are set such that an end portion at a downstream side in a rotation direction of the working surface of the collecting cylinder and an end portion at a downstream side in a rotation direction of each of the working surfaces of the chablon cylinders rotate in synchronism and in contact with each other in accordance with rotations of the collecting cylinder and the chablon cylinders, and
• a length in a circumferential direction of outer circumferential surfaces of the form rollers is equal to a length in a circumferential direction of the working surfaces of the chablon cylinders.