Presstek, Inc.

Other

Kenneth T Robichaud

Thomas E Lewis

Michael T Nowak

Richard A Williams

John F Kline

John P Gardiner

Frank G Pensavecchia

Kenneth R Cassidy

Apparatus and methods for imaging lithographic plates using laser devices that emit in the near-infrared region, and plates suitable for imaging with the apparatus and methods. Laser output either ablates one or more plate layers or physically transforms a surface layer, in either case resulting in an imagewise pattern of features on the plate. The image features exhibit an affinity for ink and/or a fluid to which ink will not adhere that differs from that of unexposed areas.

Laser-driven method and apparatus for lithographic imaging and printing

Apparatus and methods for imaging lithographic plates using laser devices that emit in the near-infrared region, and plates suitable for imaging with the apparatus and methods. Laser output either ablates one or more plate layers or physically transforms a surface layer, in either case resulting in an imagewise pattern of features on the plate. The image features exhibit an affinity for ink or an ink-abhesive fluid that differs from that of unexposed areas.

Laser-imageable lithographic printing members

Lithographic printing plates for use with laser discharge imaging

Lithographic printing plates suitable for imaging by means of laser devices that emit in the near-infrared region. Laser output either ablates one or more plate layers or physically transforms a surface layer, in either case resulting in an imagewise pattern of features on the plate. The image features exhibit an affinity for ink or an ink-abhesive fluid that differs from that of unexposed areas.

Lithographic printing plates for use with laser-discharge imaging

Lithographic printing plates suitable for imaging by means of laser devices. Laser output ablates one or more plate layers, resulting in an imagewise pattern of features on the plate. The image features exhibit an affinity for ink or an ink-abhesive fluid that differs from that of unexposed areas. The plates also include a secondary ablation layer that ablates only partially, and in a controlled fashion, as a result of destruction of overlying layers.

Lithographic printing members having secondary ablation layers for use

Weighing device consisting of a hollow housing in which is mounted a leaf spring and having slots which expose the spring for receiving an object and for indicating the amount of deflection of the spring due to the weight of the object.

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Fitchburg, MA, United States of America

Kenneth T Robichaud