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公开(公告)号:US20080003411A1
公开(公告)日:2008-01-03
申请号:US11478266
申请日:2006-06-29
申请人: Joseph Hunter , Carl G. Hunter , George C. Motoc , Ronald N. Doescher , Kevin P. Sroka , Jen-Chi Huang , Oliver R. Blum
发明人: Joseph Hunter , Carl G. Hunter , George C. Motoc , Ronald N. Doescher , Kevin P. Sroka , Jen-Chi Huang , Oliver R. Blum
IPC分类号: B41M5/00
CPC分类号: B41N3/034 , B41C1/1008 , B41C1/1016 , B41C2210/02 , B41C2210/06 , B41C2210/14 , B41C2210/22 , B41C2210/24 , B41C2210/262 , C25D11/16 , C25F3/04 , Y10T428/24802
摘要: Aluminum-containing metal sheets can be electrochemically grained to provide a center line average roughness (Ra) of less than 0.60 μm and an average maximum pit depth (Rv) of less than 4.5 μm using a current density of at least 50 A/dm2 and a charge density less than or equal to 850 coulombs/dm2. This improved metal sheet can be used as substrates for imageable elements including lithographic printing plates that exhibit reduced blanket toning.
摘要翻译: 含铝金属片可以电化学粒化,使用至少50A / dm 2的电流密度提供小于0.60μm的中心线平均粗糙度(Ra)和小于4.5μm的平均最大凹坑深度(Rv) SUP> 2,电荷密度小于或等于850库仑/ dm 2。 这种改进的金属片可用作可成像元件的基底,包括显示减少的毯子色调的平版印刷版。