Inkjet CTP method for preparing a set of lithographic printing plates

US10369778B2 · kind B2 · utility

Assignee

• Agfa NV · BE

Inventors

• Tim DESMET · Mortsel, BE
• Jens Lenaerts · Mortsel, BE
• Patrick Van den Bergen · Mortsel, BE

Key dates

• Filing date: Nov 2, 2015
• Grant date: Aug 6, 2019
• Expiry date: Jun 26, 2036

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B41C1/12
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

A method of preparing a first and second lithographic printing plate for lithographic printing of a color digital image on a receiver wherein the color digital image includes a plurality of colorant separations; the method including the steps of jetting droplets by an inkjet CTP system on a first lithographic support for the first lithographic printing plate thereby forming a printing area of a first lithographic image which represents a first colorant separation of the plurality of colorant separations; and jetting droplets by the inkjet CTP system on a second lithographic support for the second lithographic printing plate thereby forming a printing area of a second lithographic image which represents a second colorant separation of the plurality of colorant separations; and wherein the method of preparing a first and second lithographic printing plates is characterized by forming a part of or whole the first and second lithographic image in a print pass by the inkjet CTP system.