ORIGINAL PLATE FOR ON-PRESS DEVELOPMENT TYPE LITHOGRAPHIC PRINTING PLATE, METHOD FOR FABRICATING LITHOGRAPHIC PRINTING PLATE, AND LITHOGRAPHIC PRINTING METHOD

Provided is an on-machine development type planographic printing plate precursor having a support and an image-recording layer on the support, in which the image-recording layer contains an initiator, an infrared absorber capable of donating electrons to the initiator, and a color-developing substan...

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Bibliographic Details
Main Authors Yokokawa, Natsumi, Enomoto, Kazuaki, Namba, Yusuke, Fujita, Akinori, Sakaguchi, Akira, Koyama, Ichiro
Format Patent
LanguageEnglish
French
German
Published 10.04.2024
Subjects
LINING MACHINES
PERFORMING OPERATIONS
PRINTING
PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTINGSURFACES
STAMPS
TRANSPORTING
TYPEWRITERS
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Summary:Provided is an on-machine development type planographic printing plate precursor having a support and an image-recording layer on the support, in which the image-recording layer contains an initiator, an infrared absorber capable of donating electrons to the initiator, and a color-developing substance precursor, the image-recording layer can form an image by exposure to infrared laser, and in a case where the image-recording layer is exposed to an infrared laser with a wavelength of 830 nm at an energy density of 110 mJ/cm2, a brightness change ΔL of the image-recording layer before and after the exposure is 3.0 or more. Also provided are a method for preparing a planographic printing plate or a planographic printing method in which the on-machine development type planographic printing plate precursor is used.
Bibliography:Application Number: EP20240159352