JPH02136256U - - Google Patents

Description

[Brief explanation of drawings]

Fig. 1 is a sectional view of the image forming part of an electrophotographic apparatus to which the present invention is applied; Fig. 2 A, B, and C are sectional views of the image forming part of Fig. A and B are separated cross-sectional views showing the positioning means between two cartridges of the present invention, FIG. 4 is a top view showing the positioning means between the developing roller and toner supply roller of the present invention, and FIG. 6A and 6B are separated sectional views showing other positioning means between the two cartridges of the present invention, and FIG. 7 is a partial cross-sectional view of the toner supply roller used in the present invention. FIG. 8 is a top view showing the positioning means between the roller and the toner supply roller, and FIG. 8 is a partial sectional view of the developing roller used in FIG. 1...Photosensitive drum, 6...Developing roller, 7...
...Toner cartridge (second cartridge), 8
...Toner supply roller, 9...Developer layer forming blade, 14...Machine frame (first cartridge), 1
7... Sealing material on the inner surface of the machine frame, 20... Pressure spring, 25... Spacer roller provided on the shaft of the toner supply roller, 27... Spacer roller provided on the shaft of the developing roller.

Claims (1)

[Claims for Utility Model Registration] (1) A developer is supplied to a developer carrier, a certain developer layer is formed on the developer carrier, and the electrostatic charge formed on the electrostatic latent image carrier is An electrophotographic apparatus that develops a latent image with the developer carrier, transfers the toner image on the electrostatic latent image carrier to a transfer material, and cleans toner remaining on the electrostatic latent image carrier, An electrostatic latent image carrier, a developer carrier, and a developer layer forming member for regulating the developer layer of the developer carrier are supported in a first cartridge in a predetermined positional relationship, and the first cartridge is An electrophotographic device characterized in that it can be attached to and detached from the device body. (2) A second cartridge containing a certain amount of toner and supporting a toner supply member and a stirring member made of an elastic surface layer that supplies the toner to the developer carrier is detachably attached to the first cartridge. 2. The electrophotographic apparatus according to claim 1, further comprising positioning means for supporting the second cartridge in the first cartridge, and pressing means for pressing the toner supply member of the second cartridge toward the developer carrier. Device. (3) The electronic device according to claim 2, wherein spacer rollers having a smaller diameter than the outer diameter of the toner supply member that abuts both ends of the outer peripheral surface of the developer carrier are provided at both ends of the shaft portion of the toner supply member. Photographic equipment. (4) A spacer roller having a smaller diameter than the outer diameter of the developer carrier that contacts both ends of the outer peripheral surface of the electrostatic latent image carrier is provided at both ends of the shaft portion of the developer carrier. 2. The electrophotographic apparatus according to 2. (5) The electrophotographic apparatus according to claim 3 or 4, wherein the spacer roller is rotatable with respect to a rotating shaft portion.