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Title:
LINING BOARD FOR LITHOGRAPHIC PLATE AND ITS MANUFACTURING METHOD, AND PROTECTED LITHOGRAPHIC PLATE AND ITS STACK
Document Type and Number:
WIPO Patent Application WO/2003/072877
Kind Code:
A1
Abstract:
A lining board for protecting a lithographic plate, characterized in that the coefficient of the static friction between the surface of the lining board in contact with the image forming surface and the image forming surface of the lithographic plate is 0.35 or less, the surface strength of the lining board is 15 or more, or the Clark stiffness of the lining board is 20 to 50. The image forming surface and the lining board are adequately charged and made to adhere to each other in the production process of a lithographic plate so as to form a stack of them. After they are stacked, the charge quickly attenuates, so that the separatability, ejectability, and storability in an automatic plate feeding apparatus are favorable. The lining board and the image forming surface are simultaneously prevented from adhering to each other during heat treatment. The invention is particularly effective for a lithographic plate of a heat mode system in which an image is formed by laser exposure and of a photon mode system.

Inventors:
Tutikawa, Keiiti c/o Tokushu Paper Mfg. Co. Ltd. (501, Honjuku, Nagaizumi-ch, Sunto-gun Shizuoka, 411-0945, JP)
Hidaka, Katsuhiko c/o Mitsubishi Chemical Corporation (14 Sunayama, Hasaki-mach, Kashima-gun Ibaraki, 314-0255, JP)
Akamatsu, Masao c/o Mitsubishi Chemical Corporation (14 Sunayama, Hasaki-mach, Kashima-gun Ibaraki, 314-0255, JP)
Kaneda, Takeshi c/o Mitsubishi Chemical Corporation (1000 Kamoshida-cho, Aoba-k, Yokohama-shi Kanagawa, 227-0033, JP)
Application Number:
PCT/JP2003/002231
Publication Date:
September 04, 2003
Filing Date:
February 27, 2003
Export Citation:
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Assignee:
TOKUSHU PAPER MFG. CO., LTD. (501 Honjuku, Nagaizumi-cho Sunto-gun, Shizuoka, 411-0945, JP)
Tutikawa, Keiiti c/o Tokushu Paper Mfg. Co. Ltd. (501, Honjuku, Nagaizumi-ch, Sunto-gun Shizuoka, 411-0945, JP)
Hidaka, Katsuhiko c/o Mitsubishi Chemical Corporation (14 Sunayama, Hasaki-mach, Kashima-gun Ibaraki, 314-0255, JP)
Akamatsu, Masao c/o Mitsubishi Chemical Corporation (14 Sunayama, Hasaki-mach, Kashima-gun Ibaraki, 314-0255, JP)
Kaneda, Takeshi c/o Mitsubishi Chemical Corporation (1000 Kamoshida-cho, Aoba-k, Yokohama-shi Kanagawa, 227-0033, JP)
International Classes:
G03F7/004; B41N3/00; B41N6/00; D21H17/16; D21H17/37; D21H19/10; D21H19/20; D21H27/00; D21H27/10; G03F7/00; G03C3/00; (IPC1-7): D21H27/00; B41N3/00; D21H17/16; D21H19/10
Foreign References:
JP2001281873A
JPH10197992A
JP2001246869A
US20020004179A1
JP2002059669A
EP1132199A1
JPH1044633A
JPH10197992A
JP2001022511A
JPH10324734A
JP2001520953A
Other References:
See also references of EP 1479824A1
Attorney, Agent or Firm:
Shiga, Masatake (Shiga International Patent Office, 2-3-1 Yaesu Chuo-ku, Tokyo, 104-8453, JP)
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