Lithographic printing plate precursors and use

US9063423B2 · kind B2 · utility

Assignee

• EASTMAN KODAK COMPANY · US

Inventors

• Akira Igarashi · Shizuoka, JP
• Yuuki Torihata · Tatebayashi City, JP
• Harald Baumann · Tuttlingen, DE
• Udo Dwars · Herzberg, DE
• Christopher D. Simpson · Osterode, DE
• Saija Werner · Herzberg, DE
• Michael Flugel · Osterode, DE

Key dates

• Filing date: Feb 28, 2013
• Grant date: Jun 23, 2015
• Expiry date: Feb 28, 2033

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B41C2210/10
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

Negative-working lithographic printing plate precursor a negative-working imageable layer and an outermost water-soluble overcoat layer that is disposed directly on the negative-working imageable layer. The outermost water-soluble overcoat layer comprises: (1) one or more film-forming water-soluble polymeric binders, (2) organic wax particles, and (3) non-wax matte particles. The outermost water-soluble overcoat layer has a dry thickness (t) that is defined by the following equation (I):t=w/r wherein w is the dry coverage of the outermost water-soluble overcoat layer in g/m2, and r is 1 g/cm3. The organic wax particles have an average largest dimension D(wax) that is less than 0.9 of t (in μm), and the non-wax matte particles have an average largest dimension D(matte) that defined by the following equation (II):1.5 times t≦D(matte)≦40 times t(in μm).