JPS6436853U - - Google Patents
Info
- Publication number
- JPS6436853U JPS6436853U JP13165987U JP13165987U JPS6436853U JP S6436853 U JPS6436853 U JP S6436853U JP 13165987 U JP13165987 U JP 13165987U JP 13165987 U JP13165987 U JP 13165987U JP S6436853 U JPS6436853 U JP S6436853U
- Authority
- JP
- Japan
- Prior art keywords
- conveyance screw
- toner
- developing device
- conveyance
- screw
- 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.)
- Granted
Links
Landscapes
- Dry Development In Electrophotography (AREA)
Description
第１図は本考案の第一実施例を示す複写機の現
像装置の要部縦断拡大正面図、第２図は同じく横
断平面図、第３図は本考案の第二実施例を示す複
写機の現像装置の要部拡大縦断正面図、第４図は
同じく横断平面図、第５図は複写機の現像装置の
全体縦断正面図、第６図は同じく斜視図、第７図
は従来例を示す複写機の現像装置の要部縦断拡大
正面図である。
１：現像装置本体、２：トナー、３：トナーカ
ートリツジ、４：第一搬送スクリユー、５：第二
搬送スクリユー、６：トナー補給ローラー、７ａ
：第一移動間隙、Ａ：長手方向、Ａ１：一方向、
Ａ２：逆方向。
Fig. 1 is an enlarged longitudinal sectional front view of the main parts of a developing device of a copying machine showing a first embodiment of the present invention, Fig. 2 is a cross-sectional plan view of the same, and Fig. 3 is a copying machine showing a second embodiment of the invention. 4 is a cross-sectional plan view, FIG. 5 is an overall longitudinal sectional front view of the developing device of a copying machine, FIG. 6 is a perspective view, and FIG. 7 is a conventional example. FIG. 2 is an enlarged longitudinal sectional front view of a main part of the developing device of the copying machine shown in FIG. 1: Developing device body, 2: Toner, 3: Toner cartridge, 4: First conveyance screw, 5: Second conveyance screw, 6: Toner supply roller, 7a
: first movement gap, A: longitudinal direction, A1: one direction,
A2: Reverse direction.
Claims (1)
を搬送するための第一搬送スクリユーと、前記ト
ナーを第一搬送スクリユーによるトナー搬送方向
と逆方向に搬送するための第二搬送スクリユーと
、前記第一搬送スクリユーおよび第二搬送スクリ
ユーよりトナー補給側に配されたトナー補給ロー
ラーとが前記現像装置本体に内装され、前記第一
搬送スクリユーと第二搬送スクリユーとの間にト
ナーを第一搬送スクリユーから第二搬送スクリユ
ーに移動させるための第一移動間隙が形成され、
前記第二搬送スクリユー補給ローラーとの間にト
ナーを第二搬送スクリユーから補給ローラーに移
動させるための第二移動間隙が形成され、前記第
二搬送スクリユーのトナー送り量が第一搬送スク
リユーのトナー送り量よりも大に設定されたこと
を特徴とする複写機の現像装置。 a first conveyance screw for conveying the toner in one longitudinal direction of the developing device main body; a second conveyance screw for conveying the toner in a direction opposite to the toner conveyance direction by the first conveyance screw; A toner replenishment roller disposed on the toner replenishing side of the first conveyance screw and the second conveyance screw is installed in the developing device main body, and the toner is supplied from the first conveyance screw between the first conveyance screw and the second conveyance screw. A first movement gap is formed for movement to a second conveyance screw,
A second movement gap is formed between the second conveyance screw and the replenishment roller for moving the toner from the second conveyance screw to the replenishment roller, and the toner feed amount of the second conveyance screw is equal to the toner feed of the first conveyance screw. A developing device for a copying machine, characterized in that the developing device is set to be larger than the amount.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13165987U JPH0546038Y2 (en) | 1987-08-28 | 1987-08-28 | |
| US07/233,074 US4937625A (en) | 1987-08-28 | 1988-08-17 | Developing device for copier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13165987U JPH0546038Y2 (en) | 1987-08-28 | 1987-08-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6436853U true JPS6436853U (en) | 1989-03-06 |
| JPH0546038Y2 JPH0546038Y2 (en) | 1993-12-01 |
Family
ID=31387932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13165987U Expired - Lifetime JPH0546038Y2 (en) | 1987-08-28 | 1987-08-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0546038Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62105986U (en) * | 1985-12-25 | 1987-07-06 | ||
| JP2018146751A (en) * | 2017-03-06 | 2018-09-20 | 富士ゼロックス株式会社 | Developer supply apparatus and image forming apparatus |
-
1987
- 1987-08-28 JP JP13165987U patent/JPH0546038Y2/ja not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62105986U (en) * | 1985-12-25 | 1987-07-06 | ||
| JPH0324541Y2 (en) * | 1985-12-25 | 1991-05-28 | ||
| JP2018146751A (en) * | 2017-03-06 | 2018-09-20 | 富士ゼロックス株式会社 | Developer supply apparatus and image forming apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0546038Y2 (en) | 1993-12-01 |
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