JPH0175265U - - Google Patents
Info
- Publication number
- JPH0175265U JPH0175265U JP1987169945U JP16994587U JPH0175265U JP H0175265 U JPH0175265 U JP H0175265U JP 1987169945 U JP1987169945 U JP 1987169945U JP 16994587 U JP16994587 U JP 16994587U JP H0175265 U JPH0175265 U JP H0175265U
- Authority
- JP
- Japan
- Prior art keywords
- output
- reference potential
- control device
- toner concentration
- developer
- 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 4
- 238000010586 diagram Methods 0.000 description 5
- 239000004973 liquid crystal related substance Substances 0.000 description 1
Landscapes
- Dry Development In Electrophotography (AREA)
Description
第１図は本実施例のトナー濃度制御装置が使用
された現像器の断面図、第２図は本実施例のトナ
ー濃度制御装置が使用された液晶プリンタの概略
構成図、第３図はトナー濃度センサの特性図、第
４図は本実施例のトナー濃度制御装置が使用され
た現像器の回路図、第５図は本実施例のトナー濃
度制御装置が使用された現像器の動作を説明する
タイムチヤート、第６図は本実施例のトナーの制
御装置が使用された現像器の自動補正を説明する
特性図、第７図はａ，ｂはトナー濃度センサと現
像剤との距離に対する特性図である。
４……現像器、４ａ……トナーホツパ、１３…
…トナー濃度センサ、２４……ＣＰＵ、２５……
ＥＥＰＲＯＭ、２６……コンパレータ、２７……
データセレクタ、２８……カウンタ、３２……ヒ
ユーズ、４１……ソレノイド。
Fig. 1 is a cross-sectional view of a developing device in which the toner density control device of this embodiment is used, Fig. 2 is a schematic configuration diagram of a liquid crystal printer in which the toner density control device of this embodiment is used, and Fig. 3 is a toner A characteristic diagram of the density sensor, Fig. 4 is a circuit diagram of a developing device in which the toner density control device of this embodiment is used, and Fig. 5 explains the operation of the developing device in which the toner density control device of this embodiment is used. FIG. 6 is a characteristic diagram explaining automatic correction of the developing unit using the toner control device of this embodiment. FIG. It is a diagram. 4...Developer, 4a...Toner hopper, 13...
...Toner concentration sensor, 24...CPU, 25...
EEPROM, 26... Comparator, 27...
Data selector, 28...Counter, 32...Fuse, 41...Solenoid.
Claims (1)
のキヤリアに対するトナー濃度を、前記現像剤を
収納する容器と別体に設けられた濃度検知センサ
ーを用いて制御するトナー濃度制御装置において
、容器より出力される所定信号に応じて複数の基
準電位を順次発生する基準電位発生手段と、前記
基準電位と前記濃度検知センサからの出力とを比
較する比較手段と、該比較手段の出力状態を検知
する検知手段と、該検知手段の出力に応じて前記
基準電位をコード化して記憶する記憶手段とを有
することを特徴とするトナー濃度制御装置。 A toner concentration control device that controls the toner concentration with respect to carrier in a developer that develops an electrostatic latent image on an electrostatic image carrier using a concentration detection sensor provided separately from a container that stores the developer. , a reference potential generation means for sequentially generating a plurality of reference potentials in accordance with a predetermined signal output from a container, a comparison means for comparing the reference potential with an output from the concentration detection sensor, and an output of the comparison means. A toner concentration control device comprising: a detection means for detecting a state; and a storage means for encoding and storing the reference potential in accordance with the output of the detection means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987169945U JPH0626920Y2 (en) | 1987-11-06 | 1987-11-06 | Toner density control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987169945U JPH0626920Y2 (en) | 1987-11-06 | 1987-11-06 | Toner density control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0175265U true JPH0175265U (en) | 1989-05-22 |
| JPH0626920Y2 JPH0626920Y2 (en) | 1994-07-20 |
Family
ID=31460454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987169945U Expired - Lifetime JPH0626920Y2 (en) | 1987-11-06 | 1987-11-06 | Toner density control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0626920Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0431156U (en) * | 1990-07-10 | 1992-03-12 | ||
| JP2019090865A (en) * | 2017-11-10 | 2019-06-13 | キヤノン株式会社 | Image forming apparatus |
-
1987
- 1987-11-06 JP JP1987169945U patent/JPH0626920Y2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0431156U (en) * | 1990-07-10 | 1992-03-12 | ||
| JP2019090865A (en) * | 2017-11-10 | 2019-06-13 | キヤノン株式会社 | Image forming apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0626920Y2 (en) | 1994-07-20 |
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