Support for planographic printing plate and method for producing

Details Support for planographic printing plate and method for producing Support for planographic printing plate and method for producing

1995-03-06

1998-01-27

Wyszomierski, George

Metal treatment

Process of modifying or maintaining internal physical...

With casting or solidifying from melt

148695, 148696, 205661, C22F 104

Patent

active

057118272

ABSTRACT:
There are disclosed a support for a planographic printing plate, which decreases dispersion in a material quality of an aluminum alloy support and improves a yield of an electrolytic graining treatment and which can produce the planographic printing plate having a small heat softening property after a burning treatment and providing a low cost, and a method for producing the same. The support for the planographic printing plate is an aluminum alloy plate comprising 0<Fe.ltoreq.0.20 weight %, 0.ltoreq.Si.ltoreq.0.13 weight %, 99.7 weight %.ltoreq.Al and the balance of inevitable impurity elements, wherein a solid solution amount of Fe is 10 ppm to 800 ppm, and the support has a tensile strength of 14 kg/mm.sup.2 or more and an offset stress of 10 kg/mm.sup.2 or more when it is subjected to a heat treatment by holding at 300.degree. C. for 7 minutes.

REFERENCES:
patent: 5078805 (1992-01-01), Uesugi et al.
patent: 5350010 (1994-09-01), Sawada et al.
Patent Abstracts of Japan, vol. 011, No. 136 (C-419) 30 Apr. 1987.
Patent Abstracts of Japan, vol. 018, No. 098 (M-1562) 17 Feb. 1994.
Patent Abstracts of Japan, vol. 017, No. 639 (M-1515) 26 Nov. 1993.
Patent Abstracts of Japan, vol. 015, No. 425 (C-0879) 29 Oct. 1991.

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