JPS63168450U

JPS63168450U -

Info

Publication number: JPS63168450U
Application number: JP6138587U
Authority: JP
Priority date: 1987-04-24
Filing date: 1987-04-24
Publication date: 1988-11-02

Description

[Brief explanation of drawings]

第１図〜第３図は本考案の実施例を示しており
、第１図は本考案の第一実施例に係る現像装置の
構成断面図、第２図、及び第３図は第二実施例に
係る現像装置の構成断面図を示し、また第４図は
従来の現像装置の構成断面図を示す。符号説明、１……感光ドラム、１０，２０……
現像器、３０，４０……リトラクト手段、５０，
６０……シール部、７……現像剤、５２，６２…
…スプリング、５３，６３……シール部材、１ａ
……感光ベルト、６ａ……第一シール部材、６ｂ
……第二シール部材。 1 to 3 show embodiments of the present invention, FIG. 1 is a cross-sectional view of the structure of a developing device according to the first embodiment of the present invention, and FIGS. 2 and 3 are the second embodiment. A sectional view of the structure of a developing device according to an example is shown, and FIG. 4 is a sectional view of the structure of a conventional developing device. Code explanation, 1... Photosensitive drum, 10, 20...
Developing device, 30, 40... Retracting means, 50,
60... Seal portion, 7... Developer, 52, 62...
... Spring, 53, 63 ... Seal member, 1a
...Photosensitive belt, 6a...First seal member, 6b
...Second seal member.

Claims

[Claims for Utility Model Registration] (1) At least two developing units are arranged adjacent to each other on opposite sides of a rotating latent image carrier, and each developing unit separately accommodates different color developers. In a developing device that develops the latent image carrier into a desired color by selectively disposing the latent image carrier in a developable position or a non-developing position, at least the developer disposed on the rotational direction side of the latent image carrier includes: , a seal portion is provided that closes the gap between the latent image carrier and the developing device on the side adjacent to another developing device, even when this developing device is arranged at either a developing position or a non-developing position. A developing device characterized by: (2) The sealing section is characterized by comprising a sealing member that closes the gap between the latent image carrier and the developing device, and an attaching member that always urges this sealing member toward the latent image carrier. A developing device according to claim 1 of the utility model registration claim. (3) A first sealing member in which the seal portion closes a gap between the latent image carrier and the developer at a development possible position of the developer, and a gap between the latent image carrier and the developer at a non-developing position of the developer. 2. The developing device according to claim 1, further comprising a second sealing member for closing the developing device.