JPS59166976A - Developing device of copying machine - Google Patents

Developing device of copying machine

Info

Publication number
JPS59166976A
JPS59166976A JP4056083A JP4056083A JPS59166976A JP S59166976 A JPS59166976 A JP S59166976A JP 4056083 A JP4056083 A JP 4056083A JP 4056083 A JP4056083 A JP 4056083A JP S59166976 A JPS59166976 A JP S59166976A
Authority
JP
Japan
Prior art keywords
toner
sensor
magnet
housing
magnetic
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
Application number
JP4056083A
Other languages
Japanese (ja)
Inventor
Yoshio Shiina
椎名　良雄
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujifilm Business Innovation Corp
Original Assignee
Fuji Xerox Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fuji Xerox Co Ltd filed Critical Fuji Xerox Co Ltd
Priority to JP4056083A priority Critical patent/JPS59166976A/en
Publication of JPS59166976A publication Critical patent/JPS59166976A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
    • G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
    • G03G15/0822—Arrangements for preparing, mixing, supplying or dispensing developer
    • G03G15/0848—Arrangements for testing or measuring developer properties or quality, e.g. charge, size, flowability
    • G03G15/0856—Detection or control means for the developer level
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/08—Details of powder developing device not concerning the development directly
    • G03G2215/0888—Arrangements for detecting toner level or concentration in the developing device
    • G03G2215/0891—Optical detection
    • G03G2215/0894—Optical detection through a light transmissive window in the developer container wall
    • G03G2215/0897—Cleaning of the light transmissive window

Abstract

PURPOSE:To prevent a toner from adhering to a sensor, and to detect exactly the remaining quantity of the toner by providing a magnet on the side of an agitator positioned so as to be opposed to a toner sensor, and making a tuft- rising by the magnet slide-contact with the surface of the sensor. CONSTITUTION:An agitator 5 having a U-shaped arm 5b is provided so as to be freely rotatably on a shaft 5a of a housing 3, blocking of a toner is prevented by a rotation of the arm 5b in the direction as indicated with an arrow, and the toner is carried to a magnetic roll 2. Also, a magnet 6 is attached to a position of the arm 5b opposed to a toner sensor 7 of a side frame 4. Accordingly, a tuft- rising A of a magnetic toner adhering to the magnet 6 slide-contacts with a sensor surface 7a. Therefore, it is prevented that the toner adheres to the sensor surface 7a, and the remaining quantity of the toner is always detected exactly.

Description

【発明の詳細な説明】 本発明は、複写機等に用いられる現像装置、詳しくはト
ナーセンサーにトナーが付着することを防止する装置に
関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a developing device used in a copying machine or the like, and more particularly to a device for preventing toner from adhering to a toner sensor.

従来、現像装置のハウジングにトナーセンサーを取付け
、ハウジング内のトナーの残量を検知できるようにした
現像装置が提案されている。2. Description of the Related Art Conventionally, a developing device has been proposed in which a toner sensor is attached to a housing of the developing device to detect the amount of toner remaining in the housing.

しかし、トナーセンサーはハウジング内ニ位置している
ために、トナーセンサーの表面にトナーが次第に付着し
てトナーセンサーの機能が低下し、トナーセンサーでト
ナーの残量を正確に検知できなくなることがある。However, since the toner sensor is located inside the housing, toner may gradually adhere to the surface of the toner sensor, reducing its functionality and making it impossible for the toner sensor to accurately detect the amount of toner remaining. .

本発明は上記の事情に錯みなされたものであり、その目
的は、ハウジング内に設けられているトナー攪拌、搬送
部材の動きを利用してトナーセンサーの表面にトナーが
付着することを防止できるよ、うにした複写機の現像装
置な提供することである。The present invention was made in view of the above circumstances, and its purpose is to prevent toner from adhering to the surface of a toner sensor by utilizing the movement of a toner stirring and conveying member provided in a housing. Accordingly, it is an object of the present invention to provide a developing device for a copying machine.

以下図面を参照して本発明の詳細な説明する。The present invention will be described in detail below with reference to the drawings.

感光体１と対向して配設したハウジング３の開口部３α
寄位置には、現像ロールとなる磁性ロール２が回転自在
に設けられ、ハウジング３内には磁性トナーが充填して
あり、トナー攪拌、搬送部材となるアジテータ５によっ
て磁性トナ−が磁性ロール２に掬送でれ、感光体（」：
の静電潜像を可視像に現像する様に構成されている。An opening 3α of the housing 3 disposed facing the photoreceptor 1
A magnetic roll 2 serving as a developing roll is rotatably provided at the stop position, a housing 3 is filled with magnetic toner, and the magnetic toner is transferred to the magnetic roll 2 by an agitator 5 serving as a toner stirring and conveying member. Pick up the photoreceptor ('':
is configured to develop an electrostatic latent image into a visible image.

前記アジテータ５は、ハウジング３のサイドフレーム４
に回転自在に支承した軸５αにコ字状のアーム５ｂを設
けたものであり、軸５ａを駆動源によって回転すること
でアーム５ｈは矢印方向に回転運動するように構成され
、これによりトナーのブロッキングの防止及び（心性ロ
ール２へのトナー搬送を行なう。The agitator 5 is attached to the side frame 4 of the housing 3.
A U-shaped arm 5b is provided on a shaft 5α which is rotatably supported by a shaft 5a, and when the shaft 5a is rotated by a drive source, the arm 5h is configured to rotate in the direction of the arrow. This prevents blocking and transports toner to the core roll 2.

前記サイドフレーム４にはトナーのりｉ：ｆｉを検知す
るトナーセンサー７が設けられ、ｇ−（１’ナーセンサ
ー７の表面７−αはハウジング３内に臨→せてあり、ト
ナーの残ｆべを検知できるようにしである。The side frame 4 is provided with a toner sensor 7 for detecting the toner paste i:fi, and the surface 7-α of the toner sensor 7 faces inside the housing 3, and the surface 7-α of the toner sensor 7 faces the inside of the housing 3, and the toner sensor 7 detects the toner paste i:fi. This is so that it can be detected.

前記アーム５ｂにおけるトナーセンサー表面７αと対向
した位置にはマグネット６が取付けられている。A magnet 6 is attached to the arm 5b at a position facing the toner sensor surface 7α.

しかして、マグネット６には磁性トナーが磁力によって
付着し、この付着した磁性トナーの穂立ちＡが、アーム
５ｂが回転することによってトナーセンサー表面７αに
摺接し、トナーセンサー表面７ｃＬに刺着した磁性トナ
ーを除去１−る。したがってトナーセンサー表面７ａＫ
磁性トナーが付着することを防止でき、常に正位′Ｃに
トナーの残量を検知することができる。As a result, the magnetic toner is attached to the magnet 6 by magnetic force, and as the arm 5b rotates, the spikes A of the attached magnetic toner come into sliding contact with the toner sensor surface 7α, and the magnetic toner sticks to the toner sensor surface 7cL. Remove toner. Therefore, toner sensor surface 7aK
It is possible to prevent magnetic toner from adhering, and the remaining amount of toner can always be detected in the normal position 'C'.

本発明は以上の様になり、トナー（ｙＪ拌、搬送部材の
動きを利用してトナーセンサー表面に磁性トナーが刺着
することを防止でき、トラーーの残量を常に正確に検知
できる。As described above, the present invention can prevent magnetic toner from sticking to the surface of a toner sensor by utilizing toner (yJ stirring and movement of a conveying member), and can always accurately detect the remaining amount of toner.

また、トナー豊拌、搬送部材にマグネットを設けたたけ
であり、構造簡単でコスト安となると共に、既存の現像
装置を基としてｆ７′１単、容易に製作できる。In addition, since a magnet is provided in the toner agitation and conveyance member, the structure is simple and the cost is low, and it can be easily manufactured based on an existing developing device.

【図面の簡単な説明】[Brief explanation of drawings]

図面は本発明の実施例を示し、第１図は全体縦断面図、
第２図はトナーセンサ一部分の縦断面図である。 ２は現像ロール、３は／・ウジング、５はトナー攪拌、
搬送装置、６はマグネット、７はトナーセンサー、７α
は表面。The drawings show an embodiment of the present invention, and FIG. 1 is an overall longitudinal sectional view;
FIG. 2 is a longitudinal sectional view of a portion of the toner sensor. 2 is a developing roll, 3 is /・Using, 5 is a toner stirring,
Conveying device, 6 is magnet, 7 is toner sensor, 7α
is the surface.

Claims (1)

【特許請求の範囲】[Claims] ハウジング３内の磁性トナーをトナー攪拌、搬送部材５
で現像ロール２に搬送し、該現像ロール２で現像を行な
うようにυた現像装置において、前記ハウジング３にト
ナーセンサー７をその表面７αがハウジング３内に臨む
ように設けると共に、前記トナー攪拌、搬送部材５にお
けるトナーセンサー表面７αと対向した位置にマグネッ
ト６奈設け、該マグネット６に磁力によって付着した磁
性トナーの穂立ちをトナーセンサー表面７αに摺接させ
たことを特徴とする複写機の現像装置。The magnetic toner inside the housing 3 is stirred by the conveying member 5.
In the developing device, the toner sensor 7 is provided in the housing 3 so that its surface 7α faces the inside of the housing 3, and the toner is stirred, A developing device for a copying machine characterized in that a magnet 6 is provided at a position facing a toner sensor surface 7α in a conveying member 5, and spikes of magnetic toner attached to the magnet 6 by magnetic force are brought into sliding contact with the toner sensor surface 7α. Device.
JP4056083A 1983-03-14 1983-03-14 Developing device of copying machine Pending JPS59166976A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4056083A JPS59166976A (en) 1983-03-14 1983-03-14 Developing device of copying machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4056083A JPS59166976A (en) 1983-03-14 1983-03-14 Developing device of copying machine

Publications (1)

Publication Number Publication Date
JPS59166976A true JPS59166976A (en) 1984-09-20

Family

ID=12583838

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4056083A Pending JPS59166976A (en) 1983-03-14 1983-03-14 Developing device of copying machine

Country Status (1)

Country Link
JP (1) JPS59166976A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5111247A (en) * 1991-07-30 1992-05-05 Xerox Corporation Toner concentration sensing using auger mounted magnet
EP0682297A3 (en) * 1994-05-12 1996-08-21 Brother Ind Ltd Developing device having detachable toner box for use in image recording apparatus.
EP0858009A2 (en) * 1997-02-06 1998-08-12 Xerox Corporation Self cleaning imaging material dispensing system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5111247A (en) * 1991-07-30 1992-05-05 Xerox Corporation Toner concentration sensing using auger mounted magnet
EP0526194A2 (en) * 1991-07-30 1993-02-03 Xerox Corporation Toner concentration sensing using auger mounted magnet
EP0526194A3 (en) * 1991-07-30 1994-03-16 Xerox Corp
EP0682297A3 (en) * 1994-05-12 1996-08-21 Brother Ind Ltd Developing device having detachable toner box for use in image recording apparatus.
EP0858009A2 (en) * 1997-02-06 1998-08-12 Xerox Corporation Self cleaning imaging material dispensing system
EP0858009A3 (en) * 1997-02-06 1999-03-17 Xerox Corporation Self cleaning imaging material dispensing system

Similar Documents

Publication Publication Date Title
EP0521530B1 (en) Toner residual amount detecting mechanism
JPS5857151A (en) Developing device
JPS59166976A (en) Developing device of copying machine
JPH0473153B2 (en)
JPH0222384B2 (en)
JPS601621B2 (en) Developer replenishment device
JPH09274369A (en) Image forming device
JP2000214668A (en) Electrophotographic developing device
JPS6247074A (en) Developing device
JPH0412518Y2 (en)
JPH071645Y2 (en) Developer life detector
JPS62280879A (en) Developing device
JPS5921398Y2 (en) Device for detecting the presence or absence of developer in the developing device
JPS58202467A (en) Developing device of electrophotographic copying machine
JPS61153677A (en) Automatic control method of picture density of copying machine
JPS6315882Y2 (en)
KR950011876B1 (en) Developing apparatus of electrophotographic process
JPH04311980A (en) Development device
JPH0434471A (en) Image forming device
JP2530495B2 (en) Development device
JPS63118173A (en) Developing device
JPH0259778A (en) Image forming device
JPH0210953B2 (en)
JPS60129766A (en) Malfunction preventing device of developer residual detector in dry type developing device
JP2001255729A (en) Image forming device