Heidelberger Druckmaschinen Ag

Goss International Americas, Inc.

Mark Bernard Dumais

Michael Robert Lemelin

Lev Zlatin

Jackson Hacker Jones

William Albert Charette

Gerald Roger Douillard

Glenn Alan Guaraldi

Charles Henry Dufour

Dale Hiett Jackson

Michael Thomas Woroniak

Ken Francis Blaney

John Sheridan Richards

Charles Francis Svenson

John Allan Manley

John Antonios Panteleos

Andrew Work Kelsall

Michael Robert Lemellin

A variable cutoff cylinder alignment apparatus is provided. The variable cutoff cylinder alignment apparatus includes a plate cylinder support box for supporting an exchangeable variable cutoff plate cylinder, a blanket cylinder support box for supporting an exchangeable variable cutoff blanket cylinder and an alignment stop adapted to align the blanket cylinder support box and the plate cylinder support box. The plate cylinder support box supports an exchangeable plate cam and the blanket cylinder support box includes a blanket cam. The exchangeable plate cam is capable of contacting the stop and the exchangeable blanket cam is capable of contacting the plate support box to align the blanket cylinder support box and the plate cylinder support box. The plate cylinder support box and the blanket cylinder support box are capable of aligning cylinders of different sized cutoffs. A variable cutoff offset printing press and a method of aligning printing cylinders during a cutoff change are also provided.

Variable cutoff alignment apparatus and method of aligning printing cylinders during a cutoff change

A variable cutoff printing unit is provided that includes a plate cylinder, a plate cylinder support removably supporting the plate cylinder, a blanket cylinder, a blanket cylinder support removably supporting the blanket cylinder, a frame, the plate cylinder support and the blanket cylinder support being coupled to the frame, a sliding element coupled to the blanket cylinder support for moving the blanket cylinder support toward and away from the plate cylinder support, and a stopping device for stopping movement of the sliding element to limit the movement of the blanket cylinder toward and away from the plate cylinder to a defined range. A method of operating a variable cutoff printing unit is also provided.

Impression mechanism for a variable cutoff printing unit

A variable cutoff printing press is provided. The printing press includes a first plate cylinder rotating at a constant angular velocity and printing on a web during each revolution about a first plate cylinder axis and a first blanket cylinder rotating at varying angular velocities during each revolution about a first blanket cylinder axis. The first blanket cylinder comes in and out of contact with the first plate cylinder during operation. A method of variable cutoff printing is also provided.

Infinitely variable cutoff printing press with constant speed plate cylinder and inker

A printing unit arrangement in a web-fed rotary printing press includes at least one printing unithaving a first and second plate cylinderand associated first and second blanket cylinderswhich are mechanically coupled via meshing gear wheels and which are commonly driven by one drive motor. A second printing unit of the printing unit arrangement includes a first and second plate cylinderand associated first and second blanket cylinders. The first plate cylinderand the first and second blanket cylindersare mechanically coupled via meshing gea wheels and are commonly driven by a first drive motor. The second plate cylinderis individually driven by a second drive motor, and is engageable and disengageable from the associated second blanket cylinderwhile the printing press is in operation, in order to perform flying edition changes or changes of a spot color.

Printing unit arrangement in a web-fed rotary printing press

A printing unit arrangement in a web-fed rotary printing press includes at least one printing unithaving a first and second plate cylinderand associated first and second blanket cylinderswhich are mechanically coupled via meshing gear wheels and which are commonly driven by one drive motor. A second printing unit of the printing unit arrangement includes a first and second plate cylinderand associated first and second blanket cylinders. The first plate cylinderand the first and second blanket cylindersare mechanically coupled via meshing gear wheels and are commonly driven by a first drive motor. The second plate cylinderis individually driven by a second drive motor, and is engageable and disengageable from the associated second blanket cylinderwhile the printing press is in operation, in order to perform flying edition changes or changes of a spot color.

A printing unit arrangement in a web-fed rotary printing press includes at least one printing unithaving a first and second plate cylinderand associated first and second blanket cylinderswhich are mechanically coupled via meshing gear wheels and which are commonly driven by one drive motor. A second printing unit of the printing unit arrangement includes a first and second plate cylinderand associated first and second blanket cylinders. The first plate cylinderand the first and second blanket cylindersare mechanically coupled via meshing gear wheels and are commonly driven by a first drive motor. The second plate cylinderis individually driven by a second drive motor, and is engageable and disengageable from de associated second blanket cylinderwhile the printing press is in operation, in order to perform flying edition changes or changes of a spot color.

A web-fed rotary printing press ( ) for alternatively printing, in a perfecting mode, a single web ( ) or, in a non-perfecting mode, first and second webs ( ), comprises a first impression cylinder ( ) having a plurality of first blanket cylinders ( ) and a corresponding plurality of second plate cylinders ( ) arranged along a periphery of the first impression cylinder ( ). A second impression cylinder ( ) located adjacent to the first impression cylinder ( ) has a plurality of second blanket cylinders ( ) and a corresponding plurality of second plate cylinders ( ) arranged along a periphery thereof. In the perfecting mode, the single web ( ) is passed over first impression cylinder ( ) to be printed on a first side ( ) thereof and is afterwards passed through a gap ( ) between the first and second impression cylinders ( ) to the second impression cylinder ( ) to be printed on a second side ( ) thereof. In the non-perfecting mode, the first web ( ) is passed over the first impression cylinder ( ) and the second web ( ) is passed over the second impression cylinder ( ).

Lithographic web-fed rotary printing press

A printing press comprising a multi-plate plate cylinder for carrying at least a first printing plate and a second printing plate, the plate cylinder having a cylinder body with an outer surface and a lock-up bar having a retracted position and an extended position, the lock-up bar for fastening both of the first and second plates about the outer surface in the retracted position. A tucker bar is located adjacent the lock-up bar, the tucker bar including at least a first segment for tucking and holding the first printing plate on the plate cylinder and a second segment for tucking and holding the second printing plate on the plate cylinder, the first segment being independently movable with respect to the second segment. Also disclosed is a method including the steps of contacting the first printing plate with an associated first segment of a tucker bar when the common lock-up bar is in an extended position and while the second printing plate is not contacted by an associated second segment of the tucker bar, moving the common lock-up bar to the retracted position so that the first printing plate is fastened and so that an end of the second printing plate is free, and removing the second printing plate from the plate cylinder.

Printing press with multi-plate plate cylinder

A method for identifying a lateral position of a vibrator roll geared to a plate cylinder in a printing press includes the steps of sensing a reference lateral position of a vibrator roll, setting a counter to a setting corresponding to the reference lateral position of the vibrator roll and rotating a plate cylinder. The lateral position of the vibrator roll changes as a result of the rotating of the plate cylinder and the counter changes as a function of the rotating of the plate cylinder.

Reduced vibration printing press and method

A method for reducing vibrations in a printing press, the printing press having a first plate cylinder independently registrable from a second print cylinder. The method includes the steps of determining a lateral position of the first vibrator, roll with respect to the second vibrator roll and rotating the first plate cylinder with respect to the second plate cylinder so as to change the lateral position of the first vibrator roll with respect to the second vibrator roll. A printing press has a controller receiving an input from at least one sensor, the controller rotating the first plate cylinder with respect to the second plate cylinder so as to alter a phase between the first vibrator roll and the second vibrator roll as a function of the input.

A printing unit arrangement in a web-fed rotary printing press includes at least one printing unit having a first and second plate cylinder and associated first and second blanket cylinders which are mechanically coupled via meshing gear wheels and which are commonly driven by one drive motor A second printing unit of the printing unit arrangement includes a first and second plate cylinder and associated first and second blanket cylinders The first plate cylinder and the first and second blanket cylinders are mechanically coupled via meshing gear wheels and are commonly driven by a first drive motor The second plate cylinder is individually driven by a second drive motor and is engageable and disengageable from the associated second blanket cylinder while the printing press is in operation, in order to perform flying edition changes or changes of a spot color.

A printing press including a printing cylinder and a printing cylinder drive, the drive including a drive motor connected to a sun gear, a planet gear rotating about a fixed axis and driven by the sun gear, and a ring gear fixedly attached to the printing cylinder and driven by the planet gear. Also provided is a method for driving a printing cylinder comprising the steps of driving a sun gear using a drive motor, the sun gear driving a planet gear and a ring gear, the ring gear being fixedly attached to the printing cylinder.

Device and method for driving a printing cylinder

A multi-color single blanket printing press for printing single or dual webs includes a pair of blanket cylinders that are movable between a contacting position and a remote position. A plurality of plate cylinders associated with each blanket cylinder apply a multi-color image to each blanket cylinder. When the blanket cylinders are in the contacting position, a web passing through the nip will receive multi-color image on both sides. When the blanket cylinders are in the remote position, a pair of webs may be passed between secondary nips formed by the blanket cylinders and a pair of secondary impression cylinders. Each of the webs may therefore receive a multi-color image on one side.

Growing community of inventors

Kennebunk, ME, United States of America

Mark Bernard Dumais