PLANOGRAPHIC PRINTING ORIGINAL PLATE, AND METHOD FOR MANUFACTURING PLANOGRAPHIC PRINTING ORIGINAL PLATE

Provided are a planographic printing plate precursor and a method of producing a planographic printing plate precursor, in which an image forming region during printing on newspaper page is ensured and edge stains are eliminated. Provided are a planographic printing plate precursor (10b) including a...

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Bibliographische Detailangaben
Hauptverfasser: NAMBA, Yusuke, OSHIMA, Atsushi, SONE, Nobuyuki, IKEYAMA, Yusuke
Format: Patent
Sprache:eng ; fre ; ger
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Zusammenfassung:Provided are a planographic printing plate precursor and a method of producing a planographic printing plate precursor, in which an image forming region during printing on newspaper page is ensured and edge stains are eliminated. Provided are a planographic printing plate precursor (10b) including an aluminum support (12) which has an anodized film (14), and an image recording layer (16) on the aluminum support (12), in which an end portion of the planographic printing plate precursor (10b) has a sagging shape having a sagging amount (X) of 25 µm to 150 µm and a sagging width (Y) of 70 µm to 300 µm, the image recording layer (16) contains an infrared absorbing agent, and a part or an entire side surface of two sides of the aluminum support (12), the two sides having the sagging shape and opposing each other contains an ink repellent agent (44); and a method of producing the planographic printing plate precursor (10b).