| 摘要 |
PROBLEM TO BE SOLVED: To prevent the generation of any image failure while preventing the generation of a permanent deformation of a developing blade even when toner that is micronized, made spherical, polymerized and has a low melting point is used. SOLUTION: In the device, the developing blade 4 consists of a rubber elastic body 4b and a metallic supporting part 4a and a part 4b1 that is brought into contact with a developing sleeve 3 of the rubber elastic body 4b through the toner is formed into 'R' shape. A central position of the 'R' shape is specified to be the same as a center '0' of the developing sleeve 3, the diameter of the 'R' shape is made to be the same diameter as the developing sleeve 3, an indented amount of the 'R' shape is made to be within 30% of the thickness of the plate of the rubber elastic body 4b, the angle of the 'R' shape is made to be 30 deg. and this is formed by a mold transfer. |
