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An object such as an automobile part, an image forming apparatus part, a bicycle part, other machine parts, a sport article or its part, a toy or its part, or a rain article or its part has a portion to be in contact with a contact object. The contact portion is made of at least one kind of material

An object such as an automobile part, an image forming apparatus part, a bicycle part, other machine parts, a sport article or its part, a toy or its part, or a rain article or its part has a portion to be in contact with a contact object. The contact portion is made of at least one kind of material selected from a group including polymer material such as resin or rubber as well as glass, and the contact portion has a surface entirely or partially coated with a carbon film (typically, a DLC film) having a wear resistance as well as at least one of a lubricity, a water repellency and a gas barrier property. The carbon film is formed on the object with a good adhesion.

대표청구항 ▼

[ What is claimed is:] [1.] A method of manufacturing an object having a portion to be in contact with another object, said portion being made of an organic polymer material, and said portion having a surface entirely or partially coated with a carbon film having wear resistance as well as at least

[ What is claimed is:] [1.] A method of manufacturing an object having a portion to be in contact with another object, said portion being made of an organic polymer material, and said portion having a surface entirely or partially coated with a carbon film having wear resistance as well as at least one of lubricity, water repellency and a gas barrier property, said method comprising the steps of:effecting a pretreatment on a deposition surface of said portion; andsubsequently forming said carbon film on said deposition surface,said pretreatment being performed by irradiating said deposition surface of said portion with ultraviolet rays and/or electron rays and thereby producing carbon atoms having dangling bonds at said surface and thereafter exposing said surface to a plasma of at least one kind of gas selected from a fluorine-containing gas or hydrogen gas.