Apparatus and process for making lithographic printing plate with reinforced image

Patent 4338007 Issued on July 6, 1982. Estimated Expiration Date:

April 21, 2000. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

2941499

3145104

3520606

3669329

3682636

3808004

3905815

Developer apparatus for lithographic plate processing system
Patent #: 3936853
Issued on: 02/03/1976
Inventor: Mart

Apparatus for automatically processing photopolymer plates
Patent #: 3981583
Issued on: 09/21/1976
Inventor: Tsuchida , et al.

Laser imaging a lanographic printing plate
Patent #: 4020762
Issued on: 05/03/1977
Inventor: Peterson

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Inventors

Assignee

Fromson; Howard A.

Application

No. 06/142507 filed on 04/21/1980

US Classes:

355/100, With further developing processing101/463.1, Lithographic plate making, and processes of making or using copy elements, and elements per se430/156, At least two radiation-sensitive layers430/269, IMAGING AFFECTING PHYSICAL PROPERTY OF RADIATION SENSITIVE MATERIAL, OR PRODUCING NONPLANAR OR PRINTING SURFACE - PROCESS, COMPOSITION, OR PRODUCT430/328Post imaging radiant energy exposure

Examiners

Primary: Griffin, Ronald W.

Attorney, Agent or Firm

Felfe & lynch

International Classes

G03F 7/20 (20060101)
G03F 7/095 (20060101)

Abstract

Lithographic printing plates are made by exposing to actinic light a lithographic plate having a water soluble light sensitive layer thereon and a coating of a solvent soluble, UV curable material thereover to form an image in the light sensitive layer and adhere said layer to the overlying UV curable material. The plate is developed with water to remove light sensitive layer and overlying UV curable material in the non-image areas, and the plate is exposed to UV source having an intensity greater than the imaging light to form a press-ready plate having a durable, reinforced cured image thereon.