Peter W Walczak

US Patent:

6374731, Apr 23, 2002

Filed:

Apr 18, 1997

Appl. No.:

08/844350

Inventors:

Peter W. Walczak - Dover NH
Charles Henry Dufour - Durham NH
Michael Stevenson - Gouvieux, FR
John Sheridan Richards - Barrington NH
Roland Thomas Palmatier - Durham NH

Assignee:

Heidelberger Druckmaschinen AG - Heidelberg

International Classification:

B41F 712

US Classification:

101142, 101216, 101217, 101375

Abstract:

A lithographic newspaper printing press comprises printing units ( to ) which are mounted on top of each other, forming a tower arrangement ( ). Each printing unit comprises a first and a second plate cylinder ( ) having a length being substantially four times the width of a newspaper page and having a circumference being substantially equal to the height of a newspaper page. Each printing unit further comprises a first and a second blanket cylinder ( ) associated with said first and second plate cylinders ( ), whereby each of said first and second blanket cylinders ( ) has substantially the same diameter as the associated plate cylinder ( ). Each of the blanket cylinders ( ) carries a respective continuous sleeve-shaped printing blanket ( ) which is axially removable from the respective plate cylinder through an aperture formed in the side wall of the housing of the printing unit, while the respective blanket cylinder ( ) is cantilevered in the opposite side wall of the housing.

US Patent:

6408751, Jun 25, 2002

Filed:

Apr 26, 2000

Appl. No.:

09/559220

Inventors:

Peter Walczak - Lee NH

Assignee:

Heidelberger Druckmaschinen AG - Heidelberg

International Classification:

B41F 3102

US Classification:

101365, 101330

Abstract:

An automatic multi-process ink leveler for open-fountain printing presses includes a duct with four chambers extending over the width of the ink fountain. In the case of a split ink fountain, which is typically used in newsprint presses wherein the ink tray is split into four sections each for one page of the paper web, the automatic leveler is provided with a remote-controlled valve for each chamber associated with each of the segments. Accordingly, there are provided 4×4 valves for four colors at the bottom surface of the ink leveler. By opening the remote controlled valves for a desired color (i. e. , black, cyan, magenta, yellow) in the segment, a quick color change in a split ink fountain can be obtained without cleaning the entire ink leveler. In addition, different types of ink (different tack, viscosity) can be used with the same result.

US Patent:

6526885, Mar 4, 2003

Filed:

Jun 28, 2001

Appl. No.:

09/894419

Inventors:

Peter Walter Walczak - Lee NH
Joseph Dushan Winnicki - Barington NH

Assignee:

Heidelberger Druckmaschinen AG - Heidelberg

International Classification:

B41F 2700

US Classification:

101375, 2989523, 492 4

Abstract:

A printing sleeve in combination with a support device includes a printing sleeve having, a first end, a second end and an interior surface, and an inflation device acting on the interior surface of the printing sleeve when the printing sleeve is removed from a printing press. The combination advantageously permits the inflation device to act at both ends of the printing sleeve and also to make the combination portable.

US Patent:

6935234, Aug 30, 2005

Filed:

Mar 1, 2002

Appl. No.:

10/087568

Inventors:

Peter W. Walczak - Dover NH, US
Charles Henry Dufour - Durham NH, US
Michael Stevenson - Gouvieux, FR
John Sheridan Richards - Barrington NH, US
Roland Thomas Palmatier - Durham NH, US

Assignee:

Heidelberger Druckmaschinen AG - Heidelberg

International Classification:

B41F007/12
B41F013/10

US Classification:

101142, 101180, 101217, 1014151

Abstract:

A lithographic newspaper printing press including printing units which are mounted on top of each other, forming a tower arrangement. Each printing unit including a first and a second plate cylinder having a length being substantially four times the width of a newspaper page and having a circumference being substantially equal to the height of a newspaper page. Each printing unit further includes first and a second blanket cylinder associated with said first and second plate cylinders, whereby each of said first and second blanket cylinders has substantially the same diameter as the associated plate cylinder. Each of the blanket cylinders carries a respective continuous sleeve-shaped printing blanket which is axially removable from the respective plate cylinder through an aperture formed in the side wall of the housing of the printing unit, while the respective blanket cylinder is cantilevered in the opposite side wall of the housing.

US Patent:

62830287, Sep 4, 2001

Filed:

Jan 26, 1999

Appl. No.:

9/237695

Inventors:

Peter Walter Walczak - Dover NH

Assignee:

Heidelberger Druckmaschinen AG - Heidelberg

International Classification:

B41F 3500

US Classification:

101425

Abstract:

An offline tubular blanket washing system includes a tube washer for cleaning blanket tubes removed from a printing unit. A storage rack receives the blanket tubes cleaned in the tube washer and stores the blanket tubes for installation in the printing unit.