JP2006334934A5 - - Google Patents

Claims (11)

In the method of manufacturing a roller provided with an elastic layer having a roughened surface and a thickness exceeding 1 mm on the outer periphery of the shaft core body,
(A) forming an uncured liquid rubber material layer on the outer periphery of the shaft core;
(B) heat-treating the uncured liquid rubber material layer to form a semi-cured rubber material layer;
(C) having a step of roughening and curing the rubber material to form an elastic layer by bringing a heating member having a roughened contact surface into contact with the semi-cured rubber material layer. A method for producing a roller characterized by the above. MD1 hardness T1 of the layer surface of the semi-cured rubber material and MD1 hardness T2 of the semi-cured rubber material at a position of 1 mm from the outer peripheral surface of the shaft core in the thickness direction have a relationship of T1> T2. The method for manufacturing a roller according to claim 1. The roller manufacturing method according to claim 1 , wherein the heat treatment is infrared heating .   MD1 hardness T1 of the layer surface of the semi-cured rubber material is 10.0 to 50.0 °, and MD1 hardness T2 of the semi-cured rubber material at a position of 1 mm from the outer peripheral surface of the shaft core toward the thickness direction. The roller manufacturing method according to claim 3, wherein the angle is 7.0 to 45.0 °.   MD1 hardness T1 of the layer surface of the semi-cured rubber material is 17.0 to 28.0 °, and MD1 hardness T2 of the semi-cured rubber material at a position of 1 mm from the outer peripheral surface of the shaft core toward the thickness direction. The roller manufacturing method according to claim 3, wherein the angle is 15.0 to 25.0 °. Contact surface of the heating member, the average height from the maximum depth at 1 to 1000 m, any of claims 1 to 5 in which the average pitch, characterized in Rukoto to have a convex portion of 1 to 1000 m A method for producing the roller according to claim 1 . The contact surface of the heating element, the maximum depth average height 5 to 50 [mu] m relative to the, any claim 1-5 in which the average pitch and having a convex portion of 50 to 200 [mu] m A method for producing the roller according to claim 1. (A) forming a layer of uncured liquid rubber material,
A ring-shaped coating head is arranged on the outer peripheral side of the shaft core so as to be concentric with the shaft core, and the coating is performed while moving the shaft core in the axial direction relative to the coating head. method for producing a roller according to any one of claim 1 to 7, wherein the step der Rukoto applying a liquid rubber material on the outer periphery of the mandrel from the Engineering head. A developing roller manufactured by the method for manufacturing a roller according to claim 1. An image visualized on the surface of the photosensitive drum is formed by forming a developer layer on the surface of the developing roller, contacting the developing roller with the photosensitive drum, and supplying the developer to the surface of the photosensitive drum. In the developing device to be formed,
The developing device according to claim 9, wherein the developing roller is a developing roller according to claim 9 . A rotatable photosensitive drum, a charging roller that comes into contact with the photosensitive drum and supplies electric charge to the surface of the photosensitive drum, and an image visualized on the surface of the photosensitive drum by supplying developer to the surface of the photosensitive drum In an electrophotographic process cartridge having a developing roller for forming
An electrophotographic process cartridge , wherein the developing roller is the developing roller according to claim 9 .