KR200142917Y1 - Developing device - Google Patents

Developing device Download PDF

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Publication number
KR200142917Y1
KR200142917Y1 KR2019930020150U KR930020150U KR200142917Y1 KR 200142917 Y1 KR200142917 Y1 KR 200142917Y1 KR 2019930020150 U KR2019930020150 U KR 2019930020150U KR 930020150 U KR930020150 U KR 930020150U KR 200142917 Y1 KR200142917 Y1 KR 200142917Y1
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KR
South Korea
Prior art keywords
developer
humidity
moisture
absorbing member
developing
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KR2019930020150U
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Korean (ko)
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KR950009635U (en
Inventor
송인용
이범로
Original Assignee
윤종용
삼성전자주식회사
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Priority to KR2019930020150U priority Critical patent/KR200142917Y1/en
Publication of KR950009635U publication Critical patent/KR950009635U/en
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Publication of KR200142917Y1 publication Critical patent/KR200142917Y1/en

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    • 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
    • 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
    • G03G15/02—Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices
    • G03G15/0208—Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices by contact, friction or induction, e.g. liquid charging apparatus
    • G03G15/0216—Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices by contact, friction or induction, e.g. liquid charging apparatus by bringing a charging member into contact with the member to be charged, e.g. roller, brush chargers
    • 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
    • G03G15/0806—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer on a donor element, e.g. belt, roller
    • G03G15/081—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer on a donor element, e.g. belt, roller characterised by the developer handling means after the supply and before the regulating, e.g. means for preventing developer blocking

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Dry Development In Electrophotography (AREA)
  • Control Or Security For Electrophotography (AREA)

Abstract

본 고안은 주위 습도에 무관하게 설정된 일정한 양의 현상제가 공급되어 일정한 농도의 화질의 이미지 출력을 가능케 하는 현상장치에 대해 개시한다. 상기 현상장치(30)의 내벽에 현상제(35)로부터 습기를 흡수하는 흡습부재(36)와, 형상제로부터 습기가 소정습도로 제거된 그 내부의 습도를 감지하는 감지수단과, 감지된 습도에 대응하는 대전량을 현상제(35)에 부여하는 대전수단을 구비한다. 이러한 본 고안은 흡습부재에 의해서 현상제의 습기가 제거되고 또한 습도에 가변하여 형상제에 대한 대전량의 조절에 의해 주위습도에 무관하에 현상제를 균일한 농도로 감광드럼에 공급할 수 있게 되어 고화질의 화상을 얻을 수 있는 이점이 있다.The present invention discloses a developing apparatus which is supplied with a constant amount of developer set regardless of ambient humidity to enable output of an image having a constant density of image quality. A moisture absorbing member 36 which absorbs moisture from the developer 35 on the inner wall of the developing device 30, sensing means for detecting humidity therein from which the moisture is removed from the forming agent to a predetermined humidity, and sensed humidity Charging means for imparting a charge amount corresponding to the developer 35. The present invention removes the moisture of the developer by the moisture absorbing member, and also varies with the humidity, so that the developer can be supplied to the photosensitive drum at a uniform concentration irrespective of the ambient humidity by controlling the charge amount of the shape agent. There is an advantage to get a burn.

Description

현상장치Developing equipment

제1도는 본 고안에 따른 형상장치를 나타낸 개략도이다.1 is a schematic view showing a shape device according to the present invention.

＊ 도면의 주요부분에 대한 부호의 설명＊ Explanation of symbols on main parts of drawing

30 : 현상 장치 31 : 하우징30: developing device 31: housing

34 : 교반기 35 : 현상제34: stirrer 35: developer

36 : 흡습부재 40 : 브레이드36: moisture absorbing member 40: braid

50 : 센서50: sensor

본 고안은 화상 형성장치에 관한 것으로서, 특히 현장제로부터 습기를 흡수시키는 흡수성 흡습부재가 현상 장치 내부에 부착된 화상형성 장치에 관한 것이다.The present invention relates to an image forming apparatus, and more particularly, to an image forming apparatus in which an absorbent moisture absorbing member that absorbs moisture from a field agent is attached inside a developing apparatus.

전자사진 방식을 이용한 복사기와 프린터와 같은 화상 형성장치에 있어서 종래에는 감광드럼의 표면전위를 대전량(charging amount)과 노광량(exposure amount)으로서 조절하여 화상 형성조건을 제어하여왔다. 그러나 화상 형성장치의 현상과정 동안 현상제의 대전특성은 주위의 습도에 따라 변화되어 감광드럼의 표면에 현상되는 현상제의 량이 일정하지 않게 되어 화질이 저하되는 문제점이 있다.Background Art [0002] In an image forming apparatus such as a copier and a printer using an electrophotographic method, the image forming conditions have been controlled by adjusting the surface potential of the photosensitive drum as a charging amount and an exposure amount. However, the charging characteristic of the developer during the developing process of the image forming apparatus is changed according to the ambient humidity, so that the amount of the developer to be developed on the surface of the photosensitive drum is not constant, thereby deteriorating image quality.

본 고안은 상기의 문제점을 해결하기 위하여 안출된 것으로서, 주위 습도에 무관하게 일정한 양의 현상제를 공급할 수 있도록 되어 화상의 농도를 일정하게 하는 화상 형성장치를 제공하는 데 그 목적이 있는 것이다.The present invention has been made to solve the above problems, and an object thereof is to provide an image forming apparatus capable of supplying a constant amount of developer irrespective of ambient humidity to make the density of an image constant.

상기 목적을 달성하기 위하여 본 고안에 따르면, 원고는 정전잠상이 형성되는 감광드럼과, 상기 감광드럼에 현상제를 공급하는 복수의 롤러를 가지는 현상장치를 구비하는 현상장치에 있어서, 상기현상제로부터 습기를 흡수하는 흡습부재와 ; 상기 현상제의 습도를 감지하는 센서와 ; 상기 센서에 감지된 습도에 대응하는 대전량의 전하를 현상제에 부여하기 위한 대전수단을 ; 포함하는 것을 특징으로 하는 현상장치게 제공된다.In order to achieve the above object, according to the present invention, a document includes a developing device having a photosensitive drum on which an electrostatic latent image is formed, and a plurality of rollers for supplying a developer to the photosensitive drum. A moisture absorbing member for absorbing moisture; A sensor for sensing humidity of the developer; Charging means for imparting a charge of a charge amount corresponding to the humidity sensed by the sensor to the developer; It is provided with a developing apparatus comprising a.

이하 첨부된 도면을 참조하면서 본 고안에 따른 바람직한 실시예를 상세히 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

본 고안에 다른 화상 형성장치를 개략적으로 나타낸 제1도를 참조하면, 현상장치(30)는 하우징(31)과, 이 하우징(31)내부에 저장된 현장제(35)를 이 현상제(35)와의 전위차를 흡착하여 감광드럼(미도시)에 공급하는 현상롤러(33)와, 이 현상롤러(33)와 마찰구동되고 전원이 인가되어 현상제(35)를 흡착시켜서 현상롤러(33)에 공급하는 공급롤러(32)가 마련되어 있다. 그리고 현상 장치(30) 내벽에는 현상제(35)의 유동성을 향상시키도록 교반시키는 교반기(34)가 설치되어 있으며, 현상롤러(33)의 표면상에 현상제(35)를 얇게 부착되게 하는 브레이드(40)가 설치되어 있다.Referring to FIG. 1 schematically showing another image forming apparatus according to the present invention, the developing apparatus 30 includes a housing 31 and a field agent 35 stored in the housing 31. The developing roller 33 which absorbs the potential difference between and feeds it to the photosensitive drum (not shown), and it is friction-driven with this developing roller 33, the power is applied, adsorb | sucks the developer 35, and supplies it to the developing roller 33. The feed roller 32 is provided. In addition, an agitator 34 is provided on the inner wall of the developing device 30 to improve the fluidity of the developer 35, and the braid for thinly attaching the developer 35 to the surface of the developing roller 33. 40 is provided.

한편, 본 고안의 특징적 구성으로서 현상장치(30)의 내부에는 형상제(35)로부터 습기를 흡수하는 흡습부재(36)와, 현장제(35)로부터 습기가 소정습도로 제거된 그 내부의 습도를 감지하는 감지수단과, 감지된 습도에 대응하는 대전량의 전하를 현상제(35)에 부여하는 대전수단이 구비되어 있다. 상기 감지수단으로는 현상장치(30) 내부에 센서(50)를 설치하였으며, 상기 흡습부재(36)는 폴리 아크릴 산염계인 흡습부재재를 사용하였다.On the other hand, as a characteristic constitution of the present invention, the developing device 30 has a moisture absorbing member 36 that absorbs moisture from the shaping agent 35, and humidity therein from which the moisture is removed from the field agent 35 to a predetermined humidity. Sensing means for detecting a, and charging means for providing a charge of the charge amount to the developer 35 corresponding to the sensed humidity. As the sensing means, a sensor 50 was installed inside the developing apparatus 30, and the moisture absorbing member 36 used a moisture absorbing member material of polyacrylate.

상기 대전수단는 상기 현상장치(30)에 일단이 고정되고 타단이 상기 현상롤러(33)와 마찰접촉되는 브레이드(40)와, 상기 브레이드(40)에 현상장치의 내부의 습도에 따라 가변되는 소정전위의 전압을 인가하는 전원공급장치(40')로 구성하였다.The charging means has a braid 40 whose one end is fixed to the developing device 30 and the other end thereof is in frictional contact with the developing roller 33, and a predetermined potential that is variable in accordance with the humidity of the developing device in the braid 40. The power supply 40 'is applied to apply a voltage of.

이상에서와 같이 구성된 본 고안에 따른 현상장치의 작용효과는 다음과 같다. 먼저 장치가 구동되면, 센서(50)를 통해 소정의 습도를 감지하고, 교반기(34)가 작동하여 현상제(35)를 교반시킨다. 이때 현상제(35)는 교반되면서 흡습부재(36)에 의해서 습기가 제거된다. 그리고, 콘트롤러(미도시)에서는 상기 센서(50)로부터 감지한 습도에 대한 대전량을 록업 테이블(미도시)로부터 책정하여 전원공급장치(40')를 가동하여 그 대전량에 해당하는 전원의 전압을 브레이드(40)에 제공한다.The operational effect of the developing apparatus according to the present invention configured as described above is as follows. First, when the apparatus is driven, the sensor 50 detects a predetermined humidity, and the stirrer 34 is operated to stir the developer 35. At this time, while the developer 35 is stirred, moisture is removed by the moisture absorbing member 36. In addition, the controller (not shown) sets a charge amount for the humidity sensed by the sensor 50 from a lockup table (not shown) to operate the power supply device 40 'to supply a voltage of the power corresponding to the charge amount. To the braid 40.

상술한 바와 같이 본 고안에 따른 현상장치는 현상 장치(30) 내부에 설치된 흡습부재(36)에 의해서 현상제(35)의 습도를 낮추고, 그리고 상기 센서(50)에 의해 검지된 습도에 따라 이에 대응하는 전위의 전압을 상기 전원공급장치(40')에 의해 브레이드(40)에 공급되도록 하여 브레이드(40)에 적정한 대전량의 전하가 부여되도록 한다. 따라서 적절히 조절된 대전량의 전하가 부여된 브레이드(40)에 의해 현상제(35)가 현상롤러(33)에 공급되어 일정하게 부착되게 함으로써, 주위 습도에 관계없이 일정량의 현상제(35)가 감광드럼에 공급되고 따라서 균일한 농도의 화질을 얻을 수 있는 이점이 있다.As described above, the developing apparatus according to the present invention lowers the humidity of the developer 35 by the moisture absorbing member 36 installed inside the developing apparatus 30, and accordingly, according to the humidity detected by the sensor 50. The voltage of the corresponding potential is supplied to the braid 40 by the power supply device 40 'so that an appropriate amount of charge is applied to the braid 40. Accordingly, the developer 35 is supplied to the developing roller 33 by the braid 40 to which the charge amount of charge is appropriately adjusted so that the developer 35 is uniformly attached. There is an advantage that can be supplied to the photosensitive drum and thus obtain a uniform concentration of image quality.

상술한 바와 같이 본 고안은 간단한 구조로 고화질을 얻을 수 있는 현상장치를 제공하는 효과적인 고안인 것이다.As described above, the present invention is an effective design for providing a developing device that can obtain high quality with a simple structure.

Claims (4)

(정정) 원고의 정전잠상이 형성되는 감광드럼과, 상기 감광드럼에 현상제를 공급하는 복수의 롤러를 가지는 현상장치를 구비하는 현상장치에 있어서, 상기 현상제로부터 습기를 흡수하는 흡습부재와 ; 상기 현상제의 습도를 감지하는 센서와 ; 상기 센서에 감지된 습도에 대응하는 대전량의 전하를 현상제에 부여하기 위한 대전수단을 ; 포함하는 것을 특징으로 하는 현상장치.(Correction) A developing device comprising a photosensitive drum on which an electrostatic latent image of a document is formed, and a developing device having a plurality of rollers for supplying a developer to the photosensitive drum, comprising: a moisture absorbing member for absorbing moisture from the developer; A sensor for sensing humidity of the developer; Charging means for imparting a charge of a charge amount corresponding to the humidity sensed by the sensor to the developer; Developing apparatus comprising a. (정정) 제1항에 있어서, 상기 흡습부재가 상기 현상제에 접촉되게 상기 하우징 내측벽에 부착되어 있는 것을 특징으로 하는 현상장치.(Correction) The developing apparatus according to claim 1, wherein the moisture absorbing member is attached to the inner wall of the housing so as to contact the developer. (정정) 제1항 또는 제2항에 있어서, 상기 흡습부재가 하우징 내측벽 일부에 착탈 가능하게 형성되는 것을 특징으로 하는 현상장치.(Correction) The developing apparatus according to claim 1 or 2, wherein the moisture absorbing member is formed to be detachably attached to a portion of the inner wall of the housing. (정정) 제1항에 있어서, 상기 대전수단은 ; 그 일단이 상기 하우징에 고정되고 그 타단이 상기 복수의 롤러의 중의 어느 하나에 마찰접촉되는 브레이드와 ; 상기 센서에 의해 검출된 하우징의 내부에 습도에 따라 상기 브레이드에 소정 전위의 전압을 인가 또는 차단하는 전원공급장치를 ; 구비하는 것을 특징으로 하는 현상장치.(Correction) The method according to claim 1, wherein the charging means; A braid whose one end is fixed to the housing and whose other end is frictionally contacted with any one of the plurality of rollers; A power supply device which applies or cuts a voltage of a predetermined potential to the braid in accordance with humidity in the housing detected by the sensor; Developing apparatus characterized in that it comprises.
KR2019930020150U 1993-09-28 1993-09-28 Developing device KR200142917Y1 (en)

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KR2019930020150U KR200142917Y1 (en) 1993-09-28 1993-09-28 Developing device

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KR2019930020150U KR200142917Y1 (en) 1993-09-28 1993-09-28 Developing device

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KR950009635U KR950009635U (en) 1995-04-21
KR200142917Y1 true KR200142917Y1 (en) 1999-06-01

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