Title:
METHOD FOR MANUFACTURING ALUMINUM SUPPORT FOR LITHOGRAPHIC PRINTING PLATE MATERIAL, ALUMINUM SUPPORT FOR LITHOGRAPHIC PRINTING PLATE MATERIAL, LITHOGRAPHIC PRINTING PLATE MATERIAL, AND METHOD FOR IMAGE FORMATION
Document Type and Number:
WIPO Patent Application WO/2007/097105
Kind Code:
A1
Abstract:
This invention provides a method for manufacturing an aluminum support for a lithographic printing plate material that, even when the speed of electrochemical surface roughening treatment by web transfer, the electrochemical surface roughening treatment plate width of an aluminum plate, and the current density have been change, can realize an identical surface roughened shape and is small in unevenness in manufacture. There are also provided an aluminum support for a lithographic printing plate material, having excellent printing durability, stain resistance and tone reproduction, a lithographic printing plate material, and a method for image formation. The method for manufacturing an aluminum support for a lithographic printing plate material is characterized in that the electrode construction of a treatment tank for electrochemical surface roughening treatment is such that the number of electrodes (1φ) using a three-phase power supply is at least 3 to 5, the time necessary for passage by web transfer through between the electrodes is 0.15 to 0.60 sec, and the ratio between the time necessary for passage through directly under the electrodes and the time necessary for passage through between the electrodes (directly under the electrodes/between the electrodes) is 1.5 to 3.5.
Inventors:
SATO ATSUSHI (JP)
Application Number:
PCT/JP2006/325497
Publication Date:
August 30, 2007
Filing Date:
December 21, 2006
Export Citation:
Assignee:
KONICA MINOLTA MED & GRAPHIC (JP)
SATO ATSUSHI (JP)
SATO ATSUSHI (JP)
International Classes:
B41N3/03; B41N1/14; C25F7/00; G03F7/00; G03F7/004; G03F7/09
Foreign References:
| JPH02298300A | 1990-12-10 | |||
| JP2005329451A | 2005-12-02 | |||
| JPH01259993A | 1989-10-17 |
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