The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 24, 2005
Filed:
May. 17, 2001
Takashi Fujimoto, Yokohama, JP;
Norio Seki, Sagamihara, JP;
Toshiya Takagi, Fujisawa, JP;
Katsuyuki Ohta, Atsugi, JP;
Takashi Fujimoto, Yokohama, JP;
Norio Seki, Sagamihara, JP;
Toshiya Takagi, Fujisawa, JP;
Katsuyuki Ohta, Atsugi, JP;
Tokyo Ohka Kogyo Co., Ltd., Kanagawa-ken, JP;
Abstract
The invention discloses a multilayered photosensitive material for processing into a flexographic printing plate by direct patterning with an infrared laser beam. The multilayered material comprises: (A) a substrate; (B) a photosensitive resinous layer having sensitivity to light excepting infrared light and comprising (b1) an elastomeric binder resin, (b2) a polymerizable monomeric compound and (b3) a polymerization initiator formed on the substrate (A); (C) a barrier layer of a composition comprising a resin such as a polyvinyl pyrrolidone and alkali-soluble cellulose compounds, which transmits light other than infrared light and is removable in the development treatment, formed on the photosensitive resinous layer (B); and (D) a masking layer of a composition comprising (d1) a film-forming binder resin, (d2) an infrared absorbing compound and (d3) a compound having no transmissivity to lights other than infrared light and removable by irradiation with an infrared laser beam, formed on the barrier layer (C).