Electrolytic process and apparatus for forming pattern on surface of metallic object
First Claim
1. An electrolytic process for forming a desired pattern on the surface of a metallic object comprising the steps of:
- preparing a screen of electrically insulating material having a perforated pattern corresponding to the pattern to be formed on said metallic object;
placing said screen on said metallic object in close contact therewith;
applying an electrically conducting paste containing an electrolyte to said surface of said metallic object through said screen;
placing an electrode in contact with said paste; and
causing an electric current to flow between said electrode and said metallic object so as to cause electrolysis thereby forming said pattern on said metallic object, andmoving said paste and said surface of said metallic object relative to each other during execution of said electrolysis, wherein said relative movement is caused by a movement or vibration of said electrode.
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Accused Products
Abstract
An electrolytic process for forming a pattern on a metallic object makes use of a screen of electrically insulating material having a perforated pattern corresponding to the pattern to be formed on the metallic object. A paste containing an electrolyte is applied to the surface of the metallic object through the pattern of the screen. Electric current is supplied between the metallic object and an electrode placed in contact with the electrolyte-containing paste so that electrolysis takes place through the pattern of the screen on the surface of the metallic object. Disclosed also is an electrolytic apparatus suitable for use in carrying out the method.
12 Citations
13 Claims
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1. An electrolytic process for forming a desired pattern on the surface of a metallic object comprising the steps of:
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preparing a screen of electrically insulating material having a perforated pattern corresponding to the pattern to be formed on said metallic object; placing said screen on said metallic object in close contact therewith; applying an electrically conducting paste containing an electrolyte to said surface of said metallic object through said screen; placing an electrode in contact with said paste; and causing an electric current to flow between said electrode and said metallic object so as to cause electrolysis thereby forming said pattern on said metallic object, and moving said paste and said surface of said metallic object relative to each other during execution of said electrolysis, wherein said relative movement is caused by a movement or vibration of said electrode. - View Dependent Claims (6, 7, 8)
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2. An electrolytic process for forming a desired pattern on the surface of a metallic object comprising the steps of:
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preparing a screen of electrically insulating material having a perforated pattern corresponding to the pattern to be formed on said metallic object; placing said screen on said metallic object in close contact therewith; providing an electrode in close contact with an electrically conducting paste, said electrode having a paste holding layer made of an elastic material and impregnated with or adsorbing said paste; and causing an electric current to flow between said electrode and said metallic object so as to cause electrolysis thereby forming said pattern on said metallic object.
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3. An electrolytic process for forming a desired pattern on a metallic object comprising:
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preparing a screen of electrically insulating material in the form of a closed loop and having a pattern perforated in accordance with the pattern to be formed; forming a laminate structure by superposing a portion of said loop of said screen on said metallic object in close contact therewith; applying an electrically conducting paste to a predetermined portion of said metallic object through said screen of said laminate structure at a predetermined electrolytic processing position; and effecting an electrolysis on said metallic object through said paste and said screen at said electrolytic processing position, thereby forming said pattern on the surface of said metallic object. - View Dependent Claims (4, 5)
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9. An electrolytic apparatus for forming a desired pattern on the surface of a metallic object comprising:
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a rotational closed loop of a screen of electrically insulating material having a pattern perforated in accordance with the pattern to be formed on said metallic object; means for supplying said metallic object in a web-like form; means for taking-up said metallic object; means for forming and maintaining a laminate structure of said screen and said metallic object by bringing said screen into close contact with said metallic object and keeping the close contact over a predetermined distance of travel of said metallic object between said supplying means and said take-up means; at a predetermined electrolytic processing position; means for supplying a paste containing an electrolyte to the gap between said electrode and said metallic material at a region upstream from said electrode as viewed in the direction of movement of said metallic object; means for removing said paste at a region downstream from said electrode as viewed in the direction of movement of said metallic object; and means for supplying electrical current between said electrode and said metallic object of said laminate structure. - View Dependent Claims (10, 11, 12, 13)
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Specification