Title:
平版印刷版用アルミニウム合金板の製造方法、および製造装置
Document Type and Number:
Japanese Patent JP4891161
Kind Code:
B2
Abstract:
Disclosed is a method of manufacturing, by a continuous casting process, aluminum alloy strip for use in the production of supports for lithographic printing plates, comprising the step of passing an aluminum melt successively through a filtering means, a launder connected to the filtering means, a liquid level controlling means connected to the launder, and a melt feed nozzle connected to the liquid level controlling means, wherein the aluminum melt is obtained by melting an aluminum starting material, then adding to and melting in the molten aluminum starting material a titanium and boron-containing aluminum alloy, and the time t in seconds required for the aluminum melt to pass through the launder satisfies the following condition (1): t ¥ 270 × 1.2 × D
where D is the depth in meters of the melt in the launder. The method is able to prevent the formation of black streaks even when casting is carried out for an extended period of time.
Inventors:
Hirokazu Sawada
Akio Uesugi
Akio Uesugi
Application Number:
JP2007172285A
Publication Date:
March 07, 2012
Filing Date:
June 29, 2007
Export Citation:
Assignee:
FUJIFILM Corporation
International Classes:
B22D11/06; B22D11/00; B22D11/10; B22D11/11; B22D11/116; B22D41/50; B41N1/08; C22B9/02; C22B21/06; C22C21/00; C22F1/00; C22F1/04
Domestic Patent References:
| JP3549080B2 | ||||
| JP11254093A | ||||
| JP2000024762A |
Attorney, Agent or Firm:
Nozomi Watanabe
Haruko Sanwa
Haruko Sanwa