Heidelberger Druckmaschinen Ag

Gerald Roger Douillard

Mark Bernard Dumais

Eric Michael Lapine

Michael Thomas Woroniak

James Richard Belanger

Michael Robert Lemelin

Charles Francis Svenson

John Antonios Panteleos

John Allan Manley

Michael Robert Lemlin

Michael Robert Lemellin

The web-fed rotary offset printing machine utilizes a blanket belt onto which two or more colors are offset and which prints the two or more colors at once onto a material web. The blanket belt travels about guide rollers which have a lesser mass and/or a lesser diameter than the form cylinders which offset the colors onto the blanket belt. If several impression nips&mdash;blanket to web nips&mdash;are formed along the travel path of the material web, they are located so close to one another that fan out register errors cannot occur.

Rotary offset printing unit with rubber blanket belt and offset printing method

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 method and an apparatus are provided for absorbing lateral sideframe vibration in printing units. A member is connected between two sideframes of a printing unit. According to one embodiment, the member is a rod and a mass slides on the rod. The mass is biased between two springs and a unit frame tie surrounds the rod. According to another embodiment, collars are disposed on the rod for adjusting the preload of the springs and additional masses may be placed on the mass sliding on the rod. A further embodiment includes a unit frame tie acting as the member and a rod connected to the unit frame tie. A mass is movable on the rod.

Method and apparatus for absorbing lateral sideframe vibration in printing units

The bearing lubrication system for a cylinder in a printing machine pumps oil from the driving gear side to the roller bearing. The gear side has a gear box and an oil sump with a supply of lubricating oil. An oil loop connects the bearing housing with the gear box fluidically via dry quick disconnects. The dry disconnects allow quick removal of the printing machine cylinder for maintenance or for print job retrofitting. As the printing machine cylinder rotates (it is driven from the gear box), oil is pumped from the gear box into the bearing housing. The bearing is thus lubricated and cooled. The oil is discharged from the bearing housing and returned to the gear box sump.

Roller bearing lubrication system and method

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.

Growing community of inventors

Epping, NH, United States of America

Gerald Roger Douillard