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33results about How to "Excellent brush resistance" patented technology

Support for lithographic printing plate and manufacturing method therefor, as well as original lithographic printing plate

The purpose of the present invention is to provide a support for a lithographic printing plate. The support has excellent scratch resistance and with the support, an original lithographic printing plate that has excellent printing durability when used as a lithographic printing plate and exhibits excellent on-machine developability can be obtained. For this support for a lithographic printing plate, which is provided with an aluminum plate and an anodized aluminum film thereon and which has micropores in the anodized film that extend in the depth direction from the surface that is on the opposite side from the aluminum plate: the micropores are configured from a large diameter hole section that extends from the surface of the anodized film to a mean depth of 75 - 120 nm (depth (A)) and a small diameter hole section that connects with the bottom of the large diameter hole section and extends from the connection position to a mean depth of 900-2000 nm; the mean diameter at the anodized film surface of the large diameter hole section is 10 nm to less than 30 nm, and the mean diameter and the depth (A) satisfy the relationship (depth (A) / mean diameter) = greater than 4.0 to 12.0; and the mean diameter at the connection position of the small diameter pore section is greater than 0 and less than 10 nm.
Owner:FUJIFILM CORP

Method of manufacturing support for planographic printing plate

Provided is a method of manufacturing a support for a planographic printing plate, by which the variation in image quality can be reduced and an even tone of sand can be achieved stably. A metal web (MW) formed of aluminum or an aluminum alloy is transferred, being dipped in an electrolyte (EL) of a plurality of electrolyte baths (11) sequentially, and current is supplied between the metal web (MW) and a plurality of electrodes (13) opposite to the metal web (MW) in the electrolyte baths (11) to perform an electrochemical surface roughening treatment on the metal web (MW). During this treatment, the flow rate of the electrolyte (EL) in the electrolyte baths (11) are so set that an average flow rate in the electrolyte baths may be 500 to 4000 mm/sec. and a flow rate distribution of the electrolyte (EL) in the width direction perpendicular to the direction in which the metal web (MW) is transferred in the electrolyte baths (11) may be within +/- 50% of the average flow rate. Letting a region of the transfer path of the metal web which is opposite to a gap between each two adjacent electrodes be a treatment suspension zone between electrodes in the bath, the metal web (MW) is transferred at such a speed that the time (Tin) for the metal web (MW) to pass through one treatment suspension zone between electrodes in the bath may be 0.05 to 1 sec.
Owner:FUJIFILM CORP

Method of manufacturing support for planographic printing plate

Provided is a method of manufacturing a support for a planographic printing plate, by which the variation in image quality can be reduced and an even tone of sand can be achieved stably. A metal web (MW) formed of aluminum or an aluminum alloy is transferred, being dipped in an electrolyte (EL) of a plurality of electrolyte baths (11) sequentially, and current is supplied between the metal web (MW) and a plurality of electrodes (13) opposite to the metal web (MW) in the electrolyte baths (11) to perform an electrochemical surface roughening treatment on the metal web (MW). During this treatment, the flow rate of the electrolyte (EL) in the electrolyte baths (11) are so set that an average flow rate in the electrolyte baths may be 500 to 4000 mm / sec. and a flow rate distribution of the electrolyte (EL) in the width direction perpendicular to the direction in which the metal web (MW) is transferred in the electrolyte baths (11) may be within + / - 50% of the average flow rate. Letting a region of the transfer path of the metal web which is opposite to a gap between each two adjacent electrodes be a treatment suspension zone between electrodes in the bath, the metal web (MW) is transferred at such a speed that the time (Tin) for the metal web (MW) to pass through one treatment suspension zone between electrodes in the bath may be 0.05 to 1 sec.
Owner:FUJIFILM CORP
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