KR200346656Y1 - Uniform Structure of Toner Electrification Quantity of the Image Formation Apparatus - Google Patents

Uniform Structure of Toner Electrification Quantity of the Image Formation Apparatus Download PDF

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Publication number
KR200346656Y1
KR200346656Y1 KR20-2003-0034646U KR20030034646U KR200346656Y1 KR 200346656 Y1 KR200346656 Y1 KR 200346656Y1 KR 20030034646 U KR20030034646 U KR 20030034646U KR 200346656 Y1 KR200346656 Y1 KR 200346656Y1
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South Korea
Prior art keywords
toner
magnetic roll
housing
chamber
image
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KR20-2003-0034646U
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Korean (ko)
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임정훈
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한국후지제록스 주식회사
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Priority to KR20-2003-0034646U priority Critical patent/KR200346656Y1/en
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Publication of KR200346656Y1 publication Critical patent/KR200346656Y1/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
    • G03G15/02—Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices
    • G03G15/0266—Arrangements for controlling the amount of charge
    • 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
    • G03G15/0808—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 supplying means, e.g. structure of developer supply roller
    • 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
    • G03G15/0887—Arrangements for conveying and conditioning developer in the developing unit, e.g. agitating, removing impurities or humidity
    • G03G15/0889—Arrangements for conveying and conditioning developer in the developing unit, e.g. agitating, removing impurities or humidity for agitation or stirring

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • General Physics & Mathematics (AREA)
  • Dry Development In Electrophotography (AREA)

Abstract

본 고안은 화상형성장치의 토너 대전량 균일화구조에 관한 것으로, 1차 대전된 토너가 마그네틱롤에 의해 반송되어 드럼상에 토너를 현상할때, 화상부와 비화상부간의 대전량차이를 제거하여 균일한 상 농도 상태를 유지할 수 있도록 한 것이다.The present invention relates to a toner charge quantity uniformizing structure of an image forming apparatus. When the first charged toner is conveyed by a magnetic roll to develop toner on a drum, the charge amount difference between the image portion and the non-image portion is eliminated and uniform. It is to maintain one phase concentration state.

본 고안의 구성은 소정크기의 하우징과, 이 하우징의 내부에 각각 갖추어지면서 토너를 교반해주는 교반기가 갖추어진 토너실과, 토너실로부터 공급되는 토너를 이송시키는 마그네틱롤과, 이송된 토너를 마찰대전시켜주는 대전블레이드가 갖추어진 현상실로 이루어진 화상형성장치에 있어서, 상기 현상실의 마그네틱 롤의 하부에 하우징 바닥면으로부터 간격을 두고 고정설치되는 고정부재와, 이 고정부재의 일단에 구비되어 상기 마그네틱롤의 표면에 접촉되도록 하는 클리닝부재를 포함한 구조이다.The constitution of the present invention is a toner chamber equipped with a predetermined size housing, a stirrer for agitating the toner, and a magnetic roll for transferring the toner supplied from the toner chamber, and frictionally charged to the transferred toner. In the image forming apparatus comprising a developing chamber equipped with a charging blade, the holding member is fixed to the lower portion of the magnetic roll of the developing chamber at a distance from the bottom of the housing, and provided at one end of the fixing member to It is a structure including a cleaning member to be in contact with the surface.

이렇게 구성된 본 고안은 마그네틱롤의 전체길이에 걸쳐 항상 새로운 토너가 공급되므로 균일한 대전량을 가지게되므로, 토너의 현상과정에서 균일한 상농도를 재현할 수 있는 효과가 있다.The present invention configured as described above has a uniform charging amount since new toner is always supplied over the entire length of the magnetic roll, and thus, it is possible to reproduce a uniform phase concentration during the developing process of the toner.

Description

화상형성장치의 토너 대전량 균일화구조{Uniform Structure of Toner Electrification Quantity of the Image Formation Apparatus}Uniform Structure of Toner Electrification Quantity of the Image Formation Apparatus}

본 고안은 화상형성장치의 토너 대전량 균일화구조에 관한 것으로, 더욱 상세하게는 1차 대전된 토너가 마그네틱롤에 의해 반송되어 드럼상에 토너를 현상할때, 화상부와 비화상부간의 토너 대전량 차이를 제거하여 균일한 상 농도 상태를 유지할 수 있도록 한 화상형성장치의 토너 대전량 균일화구조에 관한 것이다.The present invention relates to a toner charging amount uniformity structure of an image forming apparatus, and more particularly, toner charging amount between an image portion and a non-image portion when primary charged toner is conveyed by a magnetic roll to develop toner on a drum. A toner charging amount uniformity structure of an image forming apparatus is provided so that a difference can be maintained to maintain a uniform image density state.

일반적으로, 전자사진 방식을 채용한 화상형성장치는 감광드럼상의 정전잠상에 도포된 토너화상을 이송되는 기록용지에 형성시키기 위한 장치이다. 기록용지상에 토너상을 형성시키기위해서는 전사롤러가 사용되며, 전사효율을 극대화시키기 위하여 상기 전사롤러의 전측에 제전램프를 설치하기도 한다.In general, an image forming apparatus employing an electrophotographic method is an apparatus for forming a toner image applied to an electrostatic latent image on a photosensitive drum on a recording paper to be transported. A transfer roller is used to form a toner image on the recording paper, and an antistatic lamp may be provided on the front side of the transfer roller to maximize transfer efficiency.

첨부된 예시도면 도 1은 종래의 일반적인 화상형성장치의 구성을 나타낸 단면도이다. 도면을 통해 종래의 장치를 설명해보면, 소정형태의 하우징(2) 내부 일측에는 토너(4)를 저장하고 있는 토너실(6)이 형성되고, 이 토너실(6)의 반대측에는 마그네틱롤(8)이 갖추어지는 현상실(10)로 이루어져 있다.1 is a cross-sectional view showing the configuration of a conventional general image forming apparatus. Referring to the conventional apparatus through the drawings, a toner chamber 6 for storing the toner 4 is formed on one side of the housing 2 of a predetermined type, and the magnetic roll 8 is provided on the opposite side of the toner chamber 6. ) Is composed of a developing chamber (10).

또한, 상기 토너실(6)안에는 토너(4)를 교반해주는 교반기(agitator)(12)가 구비되어 있다, 또한, 토너실(6)과 현상실(10)은 서로 연통되게 되어 있고, 하우징(2)의 상부면중에서 현상실(10)과의 경계면상에 블레이드(14)가 갖추어져 있다. 이 블레이드(14)는 현상실(10)에 구비된 마그네틱롤(8)과 접촉되어 있으면서 마그네틱롤(8)에 공급된 토너(4)와의 마찰대전이 일어나도록 하여 마그네틱롤(8)의표면상에 일정한 토너층을 형성하도록 한 것이다.In the toner chamber 6, an agitator 12 for stirring the toner 4 is provided. The toner chamber 6 and the developing chamber 10 are in communication with each other, and the housing ( In the upper surface of 2), the blade 14 is provided on the interface with the developing chamber 10. The blade 14 is brought into contact with the magnetic roll 8 provided in the developing chamber 10 to cause a frictional charge with the toner 4 supplied to the magnetic roll 8 so as to be placed on the surface of the magnetic roll 8. It is intended to form a constant toner layer.

또한, 마그네틱롤(8)의 일측에는 드럼(16)이 갖추어져서 마그네틱롤(8)의 표면상에 형성된 토너층이 상기 드럼(16)과 접촉하게된다.In addition, the drum 16 is provided on one side of the magnetic roll 8 so that the toner layer formed on the surface of the magnetic roll 8 comes into contact with the drum 16.

이러한 종래의 장치는 1차 대전된 토너(4)가 마그네틱롤(8)에 의해 반송되어 드럼(16)상에 토너를 현상시킨 후 첨부된 예시도면 도 2에 도시된 바와 같이, 토너공급차에 의해 마그네틱롤(8) 표면상에 토너가 소비된 부분과 소비되지 않은 부분인 화상부(8a)와 비화상부(8b)가 발생된다. 이때, 새로운 토너(4)가 토너실(6)로부터 공급되면, 마그네틱롤(8)상에 토너가 소비된 부분인 화상부(8a)는 새로운 토너를 공급받지만, 토너가 소비되지 않은 부분인 비화상부(8b)는 대부분이 새로운 토너의 공급없이 재차 대전이 되어 1차 대전된 새로운 토너와의 대전량 차이를 가지게 된다.Such a conventional apparatus is provided with a toner supply vehicle, after which the first charged toner 4 is conveyed by the magnetic roll 8 to develop the toner on the drum 16, as shown in FIG. As a result, the image portion 8a and the non-image portion 8b, which are portions to which the toner is consumed and portions which are not consumed, are generated on the surface of the magnetic roll 8. At this time, when the new toner 4 is supplied from the toner chamber 6, the image portion 8a, which is the portion where the toner is consumed on the magnetic roll 8, receives the new toner, but the sparking portion is the portion where the toner is not consumed. Most of the upper portion 8b is recharged without supplying new toner, so that the upper portion 8b has a charge amount difference from that of the first toner charged.

이 대전량 차이에 있어서, 고 대전부의 토너는 현상성이 높기때문에, 저 대전부 토너와 현상성의 차이가 발생하므로, 결과적으로 복사상의 농도차를 발생시킨다. 이러한 농도차에 의해 화질이 좋지 않은 결과를 나타내는 것이다.In this difference in charge amount, since the toner of the high charged part is highly developable, a difference in developability is generated between the low charged part toner and, as a result, a difference in density of the copy image is generated. This difference in density results in poor image quality.

이에 본 고안은 상기와 같은 종래의 제반 문제점을 감안하여 고안된 것으로, 대전량의 차이가 없이 균일한 토너형성상태를 유지할 수 있도록 하므로써 양호한 화질을 가질 수 있도록 한 화상형성장치의 토너 대전량 균일화 구조를 제공함에 그 목적이 있다.Accordingly, the present invention was devised in view of the above-mentioned problems in the related art, and it is possible to maintain a uniform toner charge amount structure of the image forming apparatus so as to maintain a uniform toner formation state without a difference in charge amount. The purpose is to provide.

도 1은 종래의 구조를 나타낸 단면도1 is a cross-sectional view showing a conventional structure

도 2는 종래의 마그네틱롤 표면상에 토너가 형성된 상태를 나타낸 개략도2 is a schematic view showing a state where toner is formed on a surface of a conventional magnetic roll

도 3은 본 고안의 구조를 나타낸 단면도3 is a cross-sectional view showing the structure of the present invention

* 도면의 주요부분에 대한 부호설명 ** Explanation of Signs of Major Parts of Drawings *

2 : 하우징2: housing

4 : 토너4: toner

6 : 토너실6: toner chamber

8 : 마그네틱롤8: magnetic roll

10 : 현상실10: developing room

12 : 교반기12: stirrer

14 : 블레이드14: blade

16 : 드럼16: drum

20 : 고정부재20: fixing member

21 : 클리닝부재21: cleaning member

30 : 회수통로30: recovery passage

상기와 같은 목적을 달성하기 위한 본 고안은 소정크기의 하우징과, 이 하우징의 내부에 각각 갖추어지면서 토너를 교반해주는 교반기가 갖추어진 토너실과, 토너실로부터 공급되는 토너를 이송시키는 마그네틱롤이 갖추어진 현상실로 이루어진 화상형성장치에 있어서, 상기 현상실의 마그네틱 롤의 하부에 하우징 바닥면으로부터 간격을 두고 고정설치되는 고정부재와, 이 고정부재의 일단에 구비되어 상기 마그네틱롤의 표면에 접촉되도록 하는 클리닝부재를 포함한 것을 기술적 특징으로 한다.The present invention for achieving the above object is provided with a toner chamber equipped with a predetermined size housing, a stirrer for agitating the toner, respectively provided inside the housing, and a magnetic roll for transferring the toner supplied from the toner chamber. An image forming apparatus comprising a developing chamber, comprising: a fixing member fixed to a lower portion of a magnetic roll of the developing chamber at intervals from a bottom of a housing, and provided at one end of the fixing member to be in contact with a surface of the magnetic roll. It is technical feature to include a member.

상기 하우징의 바닥면과 고정부재의 하부간의 간격에는 대전된 후의 토너가 클리닝부재에 의해 회수되도록 하는 회수통로가 형성된 구조이다.At a distance between the bottom surface of the housing and the lower portion of the fixing member, a recovery passage is formed so that the toner after being charged is recovered by the cleaning member.

이하 본 고안의 바람직한 실시예를 첨부된 예시도면을 참조하여 상세하게 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

상기 종래기술과 동일한 구성요소에 대해서는 동일한 부호를 부여하여 설명하고, 상세한 설명은 생략한다. 새로운 구성요소에 대해서는 새로운 부호를 부여하여 상세하게 설명한다.The same components as those in the prior art will be described with the same reference numerals, and detailed description thereof will be omitted. The new components will be described in detail with new reference numerals.

도 3은 본 고안에 따른 바람직한 일 실시예를 나타낸 단면도이다. 도면에 도시된 바와 같이, 소정 형태를 가지는 하우징(2)의 내부에 각각 토너실(6)과 현상실(10)이 형성되어 있고, 상기 토너실(6)에는 저장된 토너(4)를 교반해주면서 이송해주는 교반기(12)가 구비되어 있다.3 is a cross-sectional view showing a preferred embodiment according to the present invention. As shown in the figure, a toner chamber 6 and a developing chamber 10 are respectively formed in the housing 2 having a predetermined shape, and the toner chamber 6 is agitated while the stored toner 4 is stirred. Agitator 12 is provided to transfer.

또한, 현상실(10)에는 대전블레이드(14)에 의해 접촉되는 마그네틱롤(8)이 갖추어져 있고, 이 마그네틱롤(8)은 토너실(6)로부터 이송된 토너(4)가 1차 대전된후, 마그네틱롤(8)의 일측에 구비된 드럼(16)으로 이송시켜 토너를 현상시키는 것이다.In addition, the developing chamber 10 is provided with a magnetic roll 8 which is contacted by the charging blade 14, and the magnetic roll 8 is formed by the primary charge of the toner 4 transferred from the toner chamber 6 to be charged. Thereafter, the toner is developed by transferring to the drum 16 provided on one side of the magnetic roll 8.

본 고안은 상기 마그네틱롤(8)의 하부에 하우징(2)의 바닥면으로부터 간격을 두고 고정부재(20)가 형성되어 있고, 이 고정부재(20)의 일단으로부터 마그네틱롤(8)의 표면까지 접촉될 수 있도록 하는 클리닝부재(21)가 연장,형성되어 있다. 이 클리닝부재(21)는 실리콘, 우레탄 등과 같은 고무계열의 재질로 이루어져 있다.In the present invention, a fixing member 20 is formed at a lower portion of the magnetic roll 8 at intervals from a bottom surface of the housing 2, and from one end of the fixing member 20 to the surface of the magnetic roll 8. The cleaning member 21 which is in contact with each other is extended and formed. The cleaning member 21 is made of a rubber-based material such as silicone, urethane, or the like.

상기 하우징(2)의 바닥면과 고정부재(20)까지의 간격은 상기 클리닝 부재(21)에 의해 마그네틱롤(8)의 표면으로부터 떨어져 나온 토너를 회수할 수 있도록 해주는 회수통로(30)가 형성되어 있다.A gap between the bottom surface of the housing 2 and the fixing member 20 is formed with a recovery passage 30 which allows the cleaning member 21 to recover toner separated from the surface of the magnetic roll 8. It is.

이러한 구성을 가지는 본 고안은 예를들어 원고를 복사하기 위해 복사동작을 수행하면, 교반기(12)의 회전에 의해 새로운 토너(4)가 마그네틱롤(8)에 공급되고, 이 공급된 토너(4)는 블레이드(14)에 의해 일정 두께의 마찰 전기 대전상태로 마그네틱롤(8) 표면상에 소정의 토너층(현상제층)을 형성한다.According to the present invention having such a configuration, for example, when a copy operation is performed to copy an original, a new toner 4 is supplied to the magnetic roll 8 by rotation of the stirrer 12, and the supplied toner 4 is supplied. ) Forms a predetermined toner layer (developer layer) on the surface of the magnetic roll 8 by a blade 14 in a triboelectrically electrified state of constant thickness.

상기 드럼(16)의 특정부분에는 노광부(미도시)에서 발생된 이미지데이터에 따른 레이저 빔에 의해 노광되어 정전 잠상이 형성된다. 이 드럼(16)의 표면에 형성된 정전잠상은 토너(4)가 토너층이 형성된 마그네틱롤(8)과 접촉하면서 회전함에 의해 현상된다. 즉, 드럼(16)에는 현상제인 토너가 형성되는 것이다.A specific portion of the drum 16 is exposed by a laser beam according to image data generated by an exposure unit (not shown) to form an electrostatic latent image. The electrostatic latent image formed on the surface of the drum 16 is developed by the toner 4 being rotated while contacting the magnetic roll 8 on which the toner layer is formed. That is, the toner as a developer is formed in the drum 16.

이러한 과정에서, 마그네틱롤(8)의 표면에는 화상부(8a)(토너가 소비된 부분)와 비화상부(8b)(토너가 소비되지 않은 부분)가 생기는데, 이때 마그네틱롤(8)과 접촉하고 있는 클리닝부재(21)에 의해 현상과정을 마친 토너는 회수통로(30)로 이송되며, 마그네틱롤(8)의 표면에는 1차대전과정을 거쳐 열화된 토너는 존재하지 않게된다.In this process, an image portion 8a (a portion where a toner is consumed) and a non-image portion 8b (a portion where a toner is not consumed) are formed on the surface of the magnetic roll 8, in contact with the magnetic roll 8 After the developing process is performed by the cleaning member 21, the toner is transferred to the recovery passage 30, and the toner deteriorated through the first electrification process does not exist on the surface of the magnetic roll 8.

이로써, 다음 복사공정을 위해 교반기(12)는 마그네틱롤(8)의 표면에 새로운 토너를 공급하는데, 마그네틱롤(8)은 전공정에서 발생된 화상부와 비화상부가 없이 새로운 토너를 공급받아 균일한 대전상태의 토너를 제공받을 수 있는 것이다.As a result, the stirrer 12 supplies new toner to the surface of the magnetic roll 8 for the next copying process. The magnetic roll 8 is supplied with a new toner without the image part and the non-image part generated in the previous process. The toner in a charged state can be provided.

이와 같이 본 고안은 마그네틱롤의 전체길이에 걸쳐 항상 새로운 토너가 공급되므르 균일한 대전량을 가지게되므로, 토너의 현상과정에서 균일한 상농도를 재현할 수 있는 효과가 있다.As such, the present invention has a uniform charging amount because new toner is always supplied over the entire length of the magnetic roll, and thus, uniform phase concentration can be reproduced during the developing process of the toner.

Claims (2)

소정크기의 하우징과, 이 하우징의 내부에 각각 갖추어지면서 토너를 교반해주는 교반기가 갖추어진 토너실과, 토너실로부터 공급되는 토너를 이송시키는 마그네틱롤이 갖추어진 현상실로 이루어진 화상형성장치에 있어서,An image forming apparatus comprising a toner chamber equipped with a predetermined size housing, a stirrer for agitating the toner inside the housing, and a developing chamber equipped with a magnetic roll for transferring the toner supplied from the toner chamber, 상기 현상실의 마그네틱 롤의 하부에 하우징 바닥면으로부터 간격을 두고 고정설치되는 고정부재와, 이 고정부재의 일단에 구비되어 상기 마그네틱롤의 표면에 접촉되도록 하는 클리닝부재를 포함한 것을 특징으로 하는 화상형성장치의 토너 대전량 균일화구조.An image forming member including a fixing member fixed to the lower portion of the magnetic roll of the developing chamber at a distance from the bottom of the housing, and a cleaning member provided at one end of the fixing member to be in contact with the surface of the magnetic roll. Uniformity of toner charge amount of the device. 제 1항에 있어서,The method of claim 1, 상기 하우징의 바닥면과 고정부재의 하부간의 간격에는 대전된 후의 토너가 클리닝부재에 의해 회수되도록 하는 회수통로가 형성된 것을 특징으로 하는 화상형성장치의 토너 대전량 균일화구조.And a recovery passage is formed in the interval between the bottom surface of the housing and the lower portion of the fixing member to recover the toner after being charged by the cleaning member.
KR20-2003-0034646U 2003-11-05 2003-11-05 Uniform Structure of Toner Electrification Quantity of the Image Formation Apparatus KR200346656Y1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8116725B2 (en) 2008-10-21 2012-02-14 Samsung Electronics Co., Ltd. GPS-enabled mobile terminal and current position locating method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8116725B2 (en) 2008-10-21 2012-02-14 Samsung Electronics Co., Ltd. GPS-enabled mobile terminal and current position locating method thereof

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