Method for making lithographic printing plates

US9329485B2 · kind B2 · utility

Assignee

• EASTMAN KODAK COMPANY · US

Inventors

• Christopher D. Simpson · Osterode, DE
• Harald Baumann · Tuttlingen, DE
• Michael Flugel · Osterode, DE
• Saija Werner · Herzberg, DE
• Oliver Piestert · Goslar, DE
• Udo Dwars · Herzberg, DE

Key dates

• Filing date: Sep 12, 2014
• Grant date: May 3, 2016
• Expiry date: Sep 12, 2034

Classification

• Technology area (CPC G): Physics
• CPC primary: G03F7/32
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

Lithographic printing plates are provided by imagewise exposing negative-working lithographic printing plate precursors having a negative-working radiation-sensitive imageable layer, followed by contacting with a processing solution that has a pH of at least 7 and up to and including 11. This processing solution also includes component (1) that is a nitrogen-containing base having an atmospheric pressure melting point of at least 40° C.; component (2) that is a non-ionic surfactant that independently has an atmospheric pressure melting point, glass transition temperature, or pour point of at least 40° C.; component (3) that is a hydroxy-containing solution promoter; and component (4) that is a hydrophilic surface protective compound. The method is carried out in a manner such that the exposed and processed precursor is not further treated with any liquid (such as gumming or rinsing solution) between processing and mounting onto a printing press.