JPH0442666U - - Google Patents
Info
- Publication number
- JPH0442666U JPH0442666U JP8462990U JP8462990U JPH0442666U JP H0442666 U JPH0442666 U JP H0442666U JP 8462990 U JP8462990 U JP 8462990U JP 8462990 U JP8462990 U JP 8462990U JP H0442666 U JPH0442666 U JP H0442666U
- Authority
- JP
- Japan
- Prior art keywords
- developing
- cover member
- developing unit
- developing roller
- toner
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 108091008695 photoreceptors Proteins 0.000 claims 3
Landscapes
- Dry Development In Electrophotography (AREA)
Description
第１図は本考案による現像ユニツトの断面図、
第２図はカバー部材およびその関連部材の斜視図
、第３図は現像台の斜視図である。
１……現像ケース、２……ホツパー、４……現
像ローラ、５……トナー供給口、７……カバー部
材、７ａ，７ｂ……カバー部分、８……作動軸、
１５……歯車、１６……歯部、１７……キー溝、
１９……現像台、２１……短リブ。
Figure 1 is a sectional view of the developing unit according to the present invention.
FIG. 2 is a perspective view of the cover member and its related members, and FIG. 3 is a perspective view of the developing table. DESCRIPTION OF SYMBOLS 1...Development case, 2...Hopper, 4...Development roller, 5...Toner supply port, 7...Cover member, 7a, 7b...Cover part, 8...Operating shaft,
15... Gear, 16... Teeth, 17... Keyway,
19...Developing table, 21...Short rib.
Claims (1)
、この現像ケースに回転可能に装着され感光体面
へホツパー内のトナーを与えて潜像を可視像化す
る現像ローラとを備える画像形成装置の現像ユニ
ツトにおいて、現像ローラの周りに回動可能なカ
バー部材を設け、このカバー部材の１部が感光体
面に対向する現像ローラの露出面を閉鎖し、他の
１部がホツパーより現像ローラへのトナー供給口
を閉鎖する用をなすことを特徴とする現像ユニツ
ト。 (2) 現像ユニツトを受容する装置本体の現像台
との協働の下に回動する作動軸を設け、この作動
軸がカバー部材に設けた歯部と噛合う歯車を有し
、現像ユニツトを現像台上に装着するときの作動
軸の回動によりカバー部材が回動し、現像ローラ
の前記露出面並に前記トナー供給口が開放される
こと、そして現像ユニツトを取り出すときの作動
軸の逆回動により、該露出面並にトナー供給口が
カバー部材により被覆されるようにしたことを特
徴とする請求項１に記載の現像ユニツト。[Scope of Claim for Utility Model Registration] (1) A developing case that forms a toner hopper, and a developing roller that is rotatably attached to the developing case and applies the toner in the hopper to the photoreceptor surface to visualize the latent image. In a developing unit of an image forming apparatus, a cover member rotatable around the developing roller is provided, one part of the cover member closes the exposed surface of the developing roller facing the photoreceptor surface, and the other part closes the exposed surface of the developing roller facing the photoreceptor surface. A developing unit characterized in that the toner is configured to close a toner supply port from a hopper to a developing roller. (2) An operating shaft is provided that rotates in cooperation with the developing table of the apparatus main body that receives the developing unit, and this operating shaft has a gear that meshes with teeth provided on the cover member, and the developing unit is When the developing unit is installed on the developing table, the cover member rotates due to the rotation of the operating shaft, and the toner supply port is opened along with the exposed surface of the developing roller, and when the developing unit is taken out, the operating shaft is rotated 2. The developing unit according to claim 1, wherein the exposed surface and the toner supply port are covered by the cover member by rotation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8462990U JPH0442666U (en) | 1990-08-10 | 1990-08-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8462990U JPH0442666U (en) | 1990-08-10 | 1990-08-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0442666U true JPH0442666U (en) | 1992-04-10 |
Family
ID=31633234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8462990U Pending JPH0442666U (en) | 1990-08-10 | 1990-08-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0442666U (en) |
-
1990
- 1990-08-10 JP JP8462990U patent/JPH0442666U/ja active Pending