公开(公告)号：WO1995008408A1

公开(公告)日：1995-03-30

申请号：PCT/GB1994002050

申请日：1994-09-21

Applicant: ALCAN INTERNATIONAL LIMITED ,  LIMBACH, Peter, Karl, Ferdinand ,  AMOR, Martin, Philip ,  BALL, Jonathan

Inventor： ALCAN INTERNATIONAL LIMITED

IPC: B21B01/22

CPC classification number: B41N1/083 ,  B21B1/227 ,  B21B1/38 ,  B21B1/40 ,  B21B47/04 ,  B21B2003/001 ,  Y10T428/12736 ,  Y10T428/12993 ,  Y10T428/26 ,  Y10T428/31678

Abstract: Aluminium sheet suitable for use as a lithographic plate support has a surface that is uniformly rough by virtue of: a rippled topography having an aspect ratio of at least 1.3 on a scale of 5 - 200 mu m; and a superimposed pitted structure on a scale of 1 - 20 mu m. A method of making the aluminium sheet involves pack rolling two aluminium ribbons to generate facing surfaces having the transverse rippled structure; followed by a small amount of a conventional roughening or graining treatment to develop the pitted structure.

Abstract translation: 适合用作平版印刷版支架的铝片具有均匀粗糙的表面，其特征在于：具有至少1.3的纵横比为5-200μm的波纹形貌; 和1 - 20亩的叠加凹坑结构。 制造铝板的方法包括将两个铝带包装以产生具有横向波纹结构的面对表面; 然后进行少量的常规粗糙化或粗化处理以开发凹坑结构。

公开(公告)号：WO1992022688A1

公开(公告)日：1992-12-23

申请号：PCT/EP1992001367

申请日：1992-06-16

Applicant: ALCAN INTERNATIONAL LIMITED ,  WARD, John, Andrew ,  HUNTER, John, Anthony ,  BALL, Jonathan ,  LIMBACH, Peter, Karl, Ferdinand

Inventor： ALCAN INTERNATIONAL LIMITED

IPC: C25F03/04

CPC classification number: C25F3/04 ,  B41N3/034

Abstract: A method of electrochemically roughening an aluminium metal sheet for use as a lithographic plate support comprises subjecting the sheet in an electrolyte to an alternating current treatment. Treatment is performed in the presence of at least one added component, present in the sheet or in the electrolyte, selected from Hg, Ga, In, Sn, Bi, Tl, Cd, Pb, Zn and Sb. The added component accelerates the electrograining, so that only 35-75 kCoulombs per square metre of electricity is required.

Abstract translation: 电化学粗糙化用作平版印刷版支撑体的铝金属片的方法包括将片材在电解液中进行交流处理。 在存在至少一种选自Hg，Ga，In，Sn，Bi，Tl，Cd，Pb，Zn和Sb的片材或电解质中的添加成分的存在下进行处理。 添加的组件加速电沉积，因此每平方米电量只需35-75千焦耳。

公开(公告)号：WO1991007514A1

公开(公告)日：1991-05-30

申请号：PCT/GB1990001804

申请日：1990-11-22

Applicant: ALCAN INTERNATIONAL LIMITED ,  LIMBACH, Peter, Karl, Ferdinand ,  MARSHALL, Graeme, John ,  RICKS, Ricky, Arthur

Inventor： ALCAN INTERNATIONAL LIMITED

IPC: C22C21/00

CPC classification number: B41N1/083 ,  C22C21/00

Abstract: Aluminium alloys are described which after suitable processing can be used to produce lithographic printing plates of improved stoving resistance. The alloys consist essentially of at least 99.00 % by weight of aluminium, from 0.02 to 0.15 % by weight in total of zirconium and/or hafnium and from 0.05 to 0.25 % by weight of manganese, with the remainder being incidental impurities. Improved stoving resistance is particularly shown with 0.02 to 0.08 % zirconium and from 0.05 to 0.15 % manganese, especially when stoving takes place at 240 DEG C or above.

Abstract translation: 描述了在合适的处理之后可以使用铝合金来制造具有改善的耐烤性的平版印刷版。 合金基本上由至少99.00重量％的铝，总计为0.02至0.15重量％的锆和/或铪和0.05至0.25重量％的锰组成，其余为杂质。 特别地，在0.02〜0.08％的锆和0.05〜0.15％的锰中，特别是在240℃以上进行烘烤时，耐腐蚀性提高。

公开(公告)号：WO1996019596A1

公开(公告)日：1996-06-27

申请号：PCT/GB1995002956

申请日：1995-12-18

Applicant: ALCAN INTERNATIONAL LIMITED ,  LIMBACH, Peter, Karl, Ferdinand ,  KUMPART, Armin ,  DAVIES, Nigel, Cleaton ,  BALL, Jonathan

Inventor： ALCAN INTERNATIONAL LIMITED

IPC: C25F01/04

CPC classification number: C25F1/04 ,  C25D5/44

Abstract: A method of cleaning an Al workpiece comprises a.c. anodising the workpiece in an acidic electrolyte capable of dissolving aluminium oxide and maintained at a temperature of at least 70 DEG C under conditions such that the surface of the workpiece is cleaned with any oxide film thereon being non-porous and no more than about 20 nm thick.

Abstract translation: 清洁Al工件的方法包括a。 在能够溶解氧化铝的酸性电解质中阳极氧化工件，并将其保持在至少70℃的温度，使得工件的表面用其上的任何氧化膜清洁而不超过约20nm 厚。

公开(公告)号：WO1992021795A1

公开(公告)日：1992-12-10

申请号：PCT/EP1992001264

申请日：1992-06-05

Applicant: ALCAN INTERNATIONAL LIMITED ,  AMOR, Martin, Philip ,  ANDREWS, Peter, Robert ,  BALL, Jonathan ,  LIMBACH, Peter, Karl, Ferdinand

Inventor： ALCAN INTERNATIONAL LIMITED

IPC: C25F03/04

CPC classification number: B41N3/034 ,  C25F3/04 ,  Y10S204/09

Abstract: Aluminium sheet is electrochemically roughened for use as a lithographic printing plate support or as capacitor foil. The alternating current used for electrochemical roughening is initially biased in a first way, e.g. anodically, and then in a second way, e.g. cathodically. Each biased current is sufficient at least to initiate formation of a pitting structure on the surface of the sheet. The method allows improved control over the pitting structure and more rapid electrograining of the sheet.

Abstract translation: 铝板被电化学粗糙化，用作平版印刷版支架或电容器箔。 用于电化学粗糙化的交流电首先以第一种方式偏置，例如， 阳极地，然后以第二种方式，例如， 阴极。 每个偏置电流至少足以启动在片材表面上的点蚀结构的形成。 该方法可以改进对点蚀结构的控制，并且更快速地对片材进行电化学研磨。