Patent ID: 8661680

Claim:
A method for manufacturing an electrophotographic elastic roller, in which end parts of a shaft core body are gripped and fixed in a vertical direction, an inclination of a central axis connecting centers of end faces of the shaft core body with respect to the vertical direction due to the grip and fix of the shaft core body is corrected, a circular coating head including a circular slit that opens inwardly is used so that the shaft core body is relatively moved in the vertical direction with respect to the circular coating head, and a non-hardened elastic layer material is ejected from the circular slit to be coated and hardened on an outer periphery of the shaft core body, the method for manufacturing the electrophotographic elastic roller comprising: a shaft core body deflection coordinates detection step in which maximum deflection coordinates in a longitudinal direction of the shaft core body which is gripped and fixed are detected at a middle position in the longitudinal direction of the shaft core body, with a central axis of the shaft core body taken as base point coordinates before the ejection to coat the non-hardened elastic layer material; and a circular coating head position correction step in which a central position of the circular coating head is moved at a constant proportion from the base point coordinates in the direction to the maximum deflection coordinates during the ejection to coat the non-hardened elastic layer material, the central position of the circular coating head is moved at a constant proportion in the direction to the base point coordinates after the circular coating head has reached the middle position in the longitudinal direction of the shaft core body at which the maximum deflection coordinates have been detected, and a moving amount of the circular coating head at the middle position in the longitudinal direction is 1% or more and 80% or less of the maximum deflection coordinates.