JPS6434651U - - Google Patents
Info
- Publication number
- JPS6434651U JPS6434651U JP12947987U JP12947987U JPS6434651U JP S6434651 U JPS6434651 U JP S6434651U JP 12947987 U JP12947987 U JP 12947987U JP 12947987 U JP12947987 U JP 12947987U JP S6434651 U JPS6434651 U JP S6434651U
- Authority
- JP
- Japan
- Prior art keywords
- developer supply
- toner
- supply passage
- developing
- section
- 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
- 238000001514 detection method Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 description 1
- 108091008695 photoreceptors Proteins 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Landscapes
- Dry Development In Electrophotography (AREA)
Description
第１図および第２図は本考案の一実施例を示す
ものであつて、第１図は現像装置の全体構成を示
す縦断面図、第２図はトナーの補給工程を示すフ
ローチヤートである。
１は現像槽、２は現像用マグネツトローラ（現
像部）、３は感光体（記録媒体）、４は搬送用マ
グネツトローラ、６は撹拌ローラ、７はシヤツタ
ー、７ａはスリツト、９はトナー濃度検出センサ
、１０はタイマー回路である。
1 and 2 show an embodiment of the present invention, in which FIG. 1 is a longitudinal sectional view showing the overall configuration of a developing device, and FIG. 2 is a flowchart showing the toner replenishment process. . 1 is a developing tank, 2 is a developing magnet roller (developing section), 3 is a photoreceptor (recording medium), 4 is a conveying magnet roller, 6 is a stirring roller, 7 is a shutter, 7a is a slit, 9 is a toner The concentration detection sensor 10 is a timer circuit.
Claims (1)
に、この現像剤供給通路を開閉しうるシヤツター
を備えた現像装置であつて、 上記シヤツターと現像部との間の現像剤供給通
路に設けられ、上記現像部へ供給されるトナーの
濃度を検出するトナー濃度検出センサと、 このトナー濃度検出センサが一定のレベルを検
出したとき、上記シヤツターの閉鎖後に一定量の
トナーを上記現像剤供給通路に補給するように時
間制御するタイマー回路とを備えたことを特徴と
する現像装置。[Scope of Claim for Utility Model Registration] A developing device comprising, in a developer supply passage to a developing section for developing a recording medium, a shutter capable of opening and closing this developer supply passage, wherein the developer supply passage is provided between the shutter and the developing section. A toner concentration detection sensor is provided in the developer supply path of the toner and detects the concentration of toner supplied to the development section. A developing device comprising: a timer circuit for controlling time so that toner is replenished into the developer supply passage.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12947987U JPH0618372Y2 (en) | 1987-08-25 | 1987-08-25 | Development device |
| US07/228,527 US5009187A (en) | 1987-08-25 | 1988-08-04 | Developing device with shutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12947987U JPH0618372Y2 (en) | 1987-08-25 | 1987-08-25 | Development device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6434651U true JPS6434651U (en) | 1989-03-02 |
| JPH0618372Y2 JPH0618372Y2 (en) | 1994-05-11 |
Family
ID=31383792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12947987U Expired - Lifetime JPH0618372Y2 (en) | 1987-08-25 | 1987-08-25 | Development device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0618372Y2 (en) |
-
1987
- 1987-08-25 JP JP12947987U patent/JPH0618372Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0618372Y2 (en) | 1994-05-11 |
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