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1. 发明授权

US06337136B1 Aluminum alloy support for lithographic printing plate and process for producing substrate for support 失效
标题翻译：用于平版印刷版的铝合金支架和用于制造支撑用基板的工艺
公开(公告)号：US06337136B1
公开(公告)日：2002-01-08
申请号：US09363127
申请日：1999-07-28
申请人： Hideki Suzuki , Ichiro Okamoto , Kazumitsu Mizushima , Tadashi Asahi , Hirokazu Sawada , Hirokazu Sakaki
发明人： Hideki Suzuki , Ichiro Okamoto , Kazumitsu Mizushima , Tadashi Asahi , Hirokazu Sawada , Hirokazu Sakaki
IPC分类号： B32B1501
CPC分类号： C22C21/00 , B41N1/083 , B41N3/034
摘要： The present invention provides a support for a lithographic printing plate prepared by cold rolling a sheet while intermediate annealing is omitted to save energy and the number of the cold rolling steps are decreased to simplify the sheet production steps and to give a desired strength of the sheet, and by inhibiting precipitation of Si particles in the substrate to give extremely excellent resistance to ink staining in the nonimage areas during printing, and a process for producing a substrate therefore. The production process comprises homogenization heat-treating an aluminum alloy slab comprising 0.10 to 0.40 wt % of Fe, 0.03 to 0.15 wt % of Si, 0.004 to 0.03 wt % of Cu, and the balance of Al and unavoidable impurities, hot rolling the heat-treated slab, and cold-rolling the hot-rolled strip without intermediate annealing, the cold rolling including a final pass after which the sheet temperature becomes at least the recovery temperature of the sheet and the following rapid cooling, whereby an aluminum alloy substrate for a lithographic printing plate having a content of precipitated Si of up to 30 ppm and a tensile strength of from 145 to 180 MPa is produced. When the aluminum alloy is electrolytically grained and anodically oxidized, the resultant anodic oxide film can contain up to 200/mm2 of precipitated Si particles having an average particle size of at least 0.5 &mgr;m.
摘要翻译：本发明提供了对通过冷轧片材制备的平版印刷版的支持，同时省略了中间退火以节省能量，并且减少了冷轧步骤的数量以简化片材生产步骤并提供片材的期望强度并且通过抑制衬底中的Si颗粒的沉淀，从而在印刷期间对非图像区域中的油墨染色产生非常优异的耐性，因此制造衬底的方法。该制造方法包括对铝合金板进行均质化热处理，其包含0.10〜0.40重量％的Fe，0.03〜0.15重量％的Si，0.004〜0.03重量％的Cu，余量为Al和不可避免的杂质，热轧热并且在不进行中间退火的情况下冷轧热轧带材，冷轧包括最终通过，其中片材温度至少为片材的回收温度和随后的快速冷却，由此形成用于产生沉淀Si含量高达30ppm，拉伸强度为145-180MPa的平版印刷版。当铝合金电解晶粒化并阳极氧化时，所得到的阳极氧化膜可含有至多200 / mm2的平均粒度至少为0.5μm的沉淀Si颗粒。

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