JPH027672U - - Google Patents
Info
- Publication number
- JPH027672U JPH027672U JP8646988U JP8646988U JPH027672U JP H027672 U JPH027672 U JP H027672U JP 8646988 U JP8646988 U JP 8646988U JP 8646988 U JP8646988 U JP 8646988U JP H027672 U JPH027672 U JP H027672U
- Authority
- JP
- Japan
- Prior art keywords
- toner
- developing device
- support member
- rigid support
- toner cartridge
- 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
- 235000014676 Phragmites communis Nutrition 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Dry Development In Electrophotography (AREA)
Description
第１図および第２図は本考案によるトナーエン
ド検知装置の第１実施例を示す断面図で、第１図
はトナーカートリツジ内のトナーが十分ある場合
、第２図はほぼ空になつた場合である。第３図お
よび第４図は、同様に第２実施例のトナーが十分
ある場合とほぼ空になつた場合の断面図である。
第５図は第３実施例の概要構成図、第６図は第４
実施例の要部側面図である。第７図は本考案によ
るトナーエンド検知装置を備えるレーザプリンタ
の概要構成図、第８図はその現像装置の拡大図で
ある。
１７……現像装置、２７……トナーカートリツ
ジ、３０……アジテータ、３７……剛性支持部材
、３８……弾性部材、３９……マグネツト、４０
……磁性板、４１……リードスイツチ、４２……
現像装置本体。
1 and 2 are cross-sectional views showing a first embodiment of the toner end detection device according to the present invention. FIG. 1 shows when there is enough toner in the toner cartridge, and FIG. 2 shows when the toner cartridge is almost empty. This is the case. Similarly, FIGS. 3 and 4 are cross-sectional views of the second embodiment when there is sufficient toner and when the toner is almost empty.
Fig. 5 is a schematic configuration diagram of the third embodiment, and Fig. 6 is a schematic diagram of the fourth embodiment.
FIG. 3 is a side view of main parts of the embodiment. FIG. 7 is a schematic diagram of a laser printer equipped with a toner end detection device according to the present invention, and FIG. 8 is an enlarged view of its developing device. 17...Developing device, 27...Toner cartridge, 30...Agitator, 37...Rigid support member, 38...Elastic member, 39...Magnet, 40
... Magnetic plate, 41 ... Reed switch, 42 ...
The main body of the developing device.
Claims (1)
ナーを撹拌・搬送するためのアジテータが回動可
能に装着された非磁性乾式トナー現像装置を備え
る電子写真装置において、前記現像装置本体また
はトナーカートリツジの外部所定位置にリードス
イツチを配置するとともに、前記現像装置本体ま
たはトナーカートリツジ内には、剛性支持部材と
これに対し接近または離隔する方向に弾性を有す
る弾性部材とをアジテータと一体に回動させて設
け、それらの剛性支持部材または弾性部材のいず
れか一方で前記リードスイツチを作動させるマグ
ネツトを支持し、他方で該マグネツトと対向した
ときその磁力を吸収する磁性板を支持したことを
特徴とする、電子写真装置のトナーエンド検知装
置。 In an electrophotographic apparatus equipped with a non-magnetic dry toner developing device in which an agitator for agitating and transporting toner is rotatably mounted in the developing device main body or toner cartridge, a predetermined external part of the developing device main body or toner cartridge is provided. A reed switch is disposed at the position, and a rigid support member and an elastic member having elasticity in a direction toward or away from the rigid support member are provided in the developing device body or the toner cartridge so as to rotate together with the agitator. , an electronic device characterized in that either one of the rigid support member or the elastic member supports a magnet that operates the reed switch, and the other supports a magnetic plate that absorbs the magnetic force when facing the magnet. Toner end detection device for photographic equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8646988U JPH027672U (en) | 1988-06-29 | 1988-06-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8646988U JPH027672U (en) | 1988-06-29 | 1988-06-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH027672U true JPH027672U (en) | 1990-01-18 |
Family
ID=31311107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8646988U Pending JPH027672U (en) | 1988-06-29 | 1988-06-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH027672U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03100868U (en) * | 1990-01-31 | 1991-10-22 |
-
1988
- 1988-06-29 JP JP8646988U patent/JPH027672U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03100868U (en) * | 1990-01-31 | 1991-10-22 |
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