KR200168968Y1 - Developing apparatus for image forming device - Google Patents
Developing apparatus for image forming device Download PDFInfo
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- KR200168968Y1 KR200168968Y1 KR2019940039641U KR19940039641U KR200168968Y1 KR 200168968 Y1 KR200168968 Y1 KR 200168968Y1 KR 2019940039641 U KR2019940039641 U KR 2019940039641U KR 19940039641 U KR19940039641 U KR 19940039641U KR 200168968 Y1 KR200168968 Y1 KR 200168968Y1
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- developer
- roller
- developing
- supply
- image forming
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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
- G03G15/0806—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
- G03G15/0815—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 developing zone and before the supply, e.g. developer recovering roller
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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
- G03G15/0806—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
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
- G03G21/0005—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge for removing solid developer or debris from the electrographic recording medium
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G2221/00—Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
- G03G2221/0026—Cleaning of foreign matter, e.g. paper powder, from imaging member
- G03G2221/0068—Cleaning mechanism
- G03G2221/0089—Mechanical
Abstract
현상롤러로부터 잔류하는 현상제를 제거시키는 공급롤러로부터 잔류현상제를 제거시키는 현상제 제거수단이 구비된 화상형성기의 현상장치에 대해 개시한다. 이 제거수단은 공급롤러(42)와 접촉설치되며 그 접촉부에 복수의 관통공(51)이 형성된 플레이트부재(50)를 구비하여 구성된다. 공급롤러(42)에 잔류하는 현상제는 관통공(51)의 가장자리와 접촉되면서 제거된다.A developing apparatus of an image forming machine provided with a developer removing means for removing a residual developer from a supply roller for removing a residual developer from a developing roller. The removal means is provided with a plate member 50 provided in contact with the feed roller 42 and having a plurality of through holes 51 formed in the contact portion thereof. The developer remaining in the feed roller 42 is removed while contacting the edge of the through hole 51.
Description
제1도는 종래 현상장치를 나타낸 단면도.1 is a cross-sectional view showing a conventional developing apparatus.
제2도는 본 고안에 따른 현상장치의 단면도.2 is a cross-sectional view of a developing apparatus according to the present invention.
제3도는 본 고안에 채용되는 플레이트부재의 사시도이다.3 is a perspective view of a plate member employed in the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
20 : 하우징 30 : 감광드럼20 housing 30 photosensitive drum
41 : 현상롤러 42 : 공급롤러41: developing roller 42: feeding roller
50 : 플레이트부재 51 : 관통공50 plate member 51 through hole
본 고안은 정전잠상이 형성된 감광드럼의 표면에 현상제를 현상하는 화상형성기의 현상장치에 관한 것으로서, 특히 현상롤러로부터 감광드럼의 표면에 공급되지 않은 현상제를 제거하여서 순환하여 다시 현상롤러측으로 공급할 수 있도록 그 구조가 개선된 화상형성기의 현상장치에 관한 것이다.The present invention relates to a developing apparatus of an image forming machine for developing a developer on a surface of a photosensitive drum having an electrostatic latent image, and in particular, removes a developer not supplied to the surface of the photosensitive drum from the developing roller to circulate and supply it to the developing roller side. The developing apparatus of the image forming machine is improved in the structure thereof.
일반적으로 복사기나 프린터 또는 팩시밀리 등의 화상형성기는, 원고로부터 또는 소정의 소스로부터 취득한 화상정보에 따라 감광드럼의 표면을 노광하여 그에 보이지 않는 잠상(滑像)을 형성하고, 그 잠상이 형성된 부위에 현상제(예: 토너)를 부착시켜 드러나 보이도록 현상하며, 그 현상된 화상을 기록지에 전사하고 정착시킴으로써 원하는 화상을 기록하게 되어 있다.In general, an image forming machine such as a copying machine, a printer, or a facsimile exposes the surface of the photosensitive drum according to image information obtained from an original or from a predetermined source to form a latent image that is invisible to the site where the latent image is formed. A developer (for example, a toner) is adhered and developed to be visible, and a desired image is recorded by transferring and fixing the developed image onto a recording sheet.
이러한 화상형성기에 있어서, 감광드럼의 표면에 현상제를 공급하여 현상하는 현상장치는 통상 제1도에 도시된 바와 같이 현상제를 저장하며 현상제 공급구멍(10')이 형성된 저장통(10)과, 이 저장통(10)으로부터 공급되는 현상제를 감광드럼(11)의 표면에 공급하고 현상하는 공급롤러(13) 및 현상롤러(12)와, 감광드럼(11)의 표면에 일정량의 현상제가 공급되도록 현상롤러(12)측에 설치되는 블레이드(14)를 구비한다. 여기서 공급롤러(13)는 현상롤러(12)와 마찰접촉하여 현상롤러(12)에 잔류하는 현상제를 제거시킨다.In such an image forming apparatus, a developing apparatus for supplying and developing a developer on a surface of a photosensitive drum typically includes a storage container 10 in which a developer is stored and a developer supply hole 10 'is formed, as shown in FIG. The supply roller 13 and the developing roller 12 for supplying and developing the developer supplied from the reservoir 10 to the surface of the photosensitive drum 11, and a predetermined amount of the developer are supplied to the surface of the photosensitive drum 11; The blade 14 is provided on the developing roller 12 side as much as possible. Here, the supply roller 13 is in frictional contact with the developing roller 12 to remove the developer remaining in the developing roller 12.
그런데, 이러한 현상장치는 현상제가 현상롤러(12)의 표면으로부터 감광드럼(11)의 표면에 공급되고 현상롤러(12)의 표면에 잔류하게 되는 현상재를 공급롤러(13)로서 제거시키지만, 이 공급롤러(13)에는 여전히 열화된 잔류 현상제가 부착되어 구동되게 됨으로써 현상 롤러(12)에 잔류하는 현상제를 완전히 제거시키지 못하게 된다. 따라서 현상롤러(12)에 부착되는 새로운 현상제의 부착량이 감소하여 화질저하를 유발시키는 문제점이 있다.By the way, this developing apparatus removes, as the supply roller 13, the developer from which the developer is supplied from the surface of the developing roller 12 to the surface of the photosensitive drum 11 and remains on the surface of the developing roller 12. The deteriorated residual developer is still attached to the feed roller 13 so that the developer remaining on the developing roller 12 cannot be completely removed. Therefore, there is a problem that the amount of adhesion of the new developer adhered to the developing roller 12 is reduced, causing deterioration of image quality.
본 고안은 상기와 같은 문제점을 해결하기 위하여 안출된 것으로서, 감광드럼의 표면에 현상하고 현상롤러에 잔류하는 현상제를 완전히 제거하여서 제거된 현상제가 새로운 현상제와 혼합하여 다시 공급될 수 있도록 그 구조가 개선된 화상형성기의 현상장치를 제공하는 데 그 목적이 있는 것이다.The present invention was devised to solve the above problems, and the structure was developed so that the developer removed by developing completely on the surface of the photosensitive drum and remaining in the developing roller can be supplied again mixed with a new developer. It is an object of the present invention to provide a developing apparatus of an improved image forming machine.
상기 목적을 달성하는 본 고안은 현상제 저장통과, 이로부터 공급되는 현상제를 정전잠상이 형성된 감광드럼에 공급하고 현상하며 서로 접촉구동되는 공급롤러 및 현상롤러와, 상기 공급롤러로부터 그 잔류 현상제를 제거시키는 현상제 제거수단을 구비하여 된 화상형성기의 현상장치에 있어서, 상기 현상제 제거수단은 상기 공급롤러와 접촉설치되며 그 접촉부에 복수의 관통공이 형성된 플레이트부재를 구비하여 된 것을 특징으로 한다.The present invention to achieve the above object is to supply and develop a developer reservoir and a developer supplied from the photosensitive drum formed with an electrostatic latent image, and to be driven in contact with each other, and the remaining developer from the supply roller A developing apparatus of an image forming machine having a developer removing means for removing the ink, wherein the developer removing means is provided in contact with the supply roller and includes a plate member having a plurality of through holes formed therein. .
상기 본 고안의 특징에 의하면, 본 고안은 상기 현상제 제거수단에 의해서 현상롤러에 잔류하는 현상제를 제거함으로써 현상롤러에 새로운 현상제의 부착을 양호하게 하여 화질향상에 기여할 수 있다는 효과를 가진다. 한편, 상기 현상제 제거수단으로는 복수의 관통공이 형성된 플레이트부재를 상기 공급롤러와 접촉설치하여서 구성될 수 있다. 이때 현상롤러에 잔류하는 현상제는 공급롤러와의 마찰접촉 구동으로 제거되고 공급롤러에 부착되는 현상제는 플레이트부재와의 마찰로 공급롤러로부터 이탈되어서 관통공을 통하여 하부로 낙하된다. 이 낙하되는 현상제는 별도의 회전체에 의해서 이송되어 새로운 현상제와 혼합될 수 있다.According to the features of the present invention, the present invention has the effect that by improving the adhesion of the new developer to the development roller by removing the developer remaining in the development roller by the developer removal means can contribute to the improvement in image quality. On the other hand, the developer removing means may be configured by installing a plate member formed with a plurality of through holes in contact with the feed roller. At this time, the developer remaining in the developing roller is removed by the friction contact drive with the supply roller, and the developer attached to the supply roller is separated from the supply roller by friction with the plate member and falls downward through the through hole. The falling developer may be transferred by a separate rotating body and mixed with the new developer.
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 따른 현상장치를 개략적인 단면도로 나타낸 제2도를 참조하면, 하우징(20)내에 현상제가 저장되는 저장통(21)과, 이 하측에 공급구멍(22)을 통하여 공급되는 현상제를 정전잠상이 형성된 감광드럼(30)의 표면에 현상하도록 공급하고 현상하는 공급롤러(42) 및 현상롤러(41)가 서로 접촉구동하도록 마련되어 있다. 그리고 보통스폰지로 형성되는 공급롤러(42)의 일측에는 저장통으로부터 공급되는 현상제를 공급롤러(42)측으로 공급이송시키는 회전체(43)가 마련되어 있다. 현상롤러(41)의 상측에는 일정량의 현상제가 감광드럼(30)에 공급되도록 현상제량을 규제하는 브레이드(44)가 설치되어 있다.Referring to FIG. 2, which is a schematic cross-sectional view of a developing apparatus according to the present invention, a storage container 21 in which a developer is stored in a housing 20, and a developer supplied through a supply hole 22 in the lower side thereof are electrostatically discharged. A supply roller 42 and a developing roller 41 for supplying and developing the surface of the photosensitive drum 30 having the latent image formed thereon are provided to be in contact with each other. On one side of the supply roller 42, which is usually formed of a sponge, a rotating body 43 for supplying and feeding the developer supplied from the storage container to the supply roller 42 side is provided. On the upper side of the developing roller 41, a braid 44 for regulating the amount of the developer so as to supply a predetermined amount of the developer to the photosensitive drum 30 is provided.
참조번호 23은 현상제를 교반시키는 교반기이며, 45는 현상제의 과도한 공급을 규제하는 현상제 회수롤러이다.Reference numeral 23 denotes a stirrer for stirring the developer, and 45 denotes a developer recovery roller which regulates excessive supply of the developer.
한편, 본 고안의 특징적인 구성으로서 상기 감광드럼(30)에 현상하고 잔류하는 현상제를 제거시키는 공급롤러(42)로부터 현상제를 제거시키는 현상제 제거수단이 구비되어 있는 바, 이 제거수단은 제2도 및 제3도에 도시된 바와 같이 상기 공급롤러(42)와 접촉설치되며 그 접촉부에 복수의 관통공(51)이 형성된 플레이트부재(50)를 구비하여 구성된다.On the other hand, as a characteristic constitution of the present invention, there is provided a developer removing means for removing the developer from the supply roller 42 for developing and removing the developer remaining in the photosensitive drum 30. As shown in FIG. 2 and FIG. 3, a plate member 50 is provided in contact with the supply roller 42 and a plurality of through holes 51 are formed in the contact portion thereof.
이와 같이 구성된 본 고안에 따른 현상장치는 다음과 같은 작용효과를 가진다.The developing apparatus according to the present invention configured as described above has the following effects.
먼저, 교반기(23)의 회전으로 교반된 현상제는 공급구멍(22)을 통하여 회전체(43) 상부측으로 낙하된다. 이어서 회전되는 공급롤러(42 )에 의해서 현상제는 현상롤러(41)측으로 공급되고 브레이드(44)에 의해서 일정량의 현상제가 현상롤러(41)측으로부터 제거되면서 정전잠상이 형성된 감광드럼(30)의 표면에 현상제를 현상하게 된다. 이후 감광드럼(30)에 현상하고 현상롤러(41)에 잔류하는 현상제는 공급롤러(42)와의 마찰구동으로 낙하된다. 한편, 현상롤러(41)와의 접촉으로 상기 잔류하는 현상제가 부착된 공급롤러(42)는 상기플레이트부재(50)와의 접촉으로 그 잔류 현상제가 제거되면서 관통공(51)을 통하여 플레이트부재(50)의 하부로 낙하하게 된다. 이때 공급롤러(42)는 스폰지로 형성됨으로써 각 관통공(51)의 가장자리와 접촉구동시 공급롤러(42)의 탄성으로 잔류하는 현상제가 제거된다. 낙하된 현상제는 회전체(43)의 구동에 의해서 새로운 현상제와 혼합되어 다시 공급롤러(42)측으로 공급된다.First, the developer stirred by the rotation of the stirrer 23 falls to the upper side of the rotating body 43 through the supply hole 22. Then, the developer is supplied to the developing roller 41 by the rotating feed roller 42, and a certain amount of the developer is removed from the developing roller 41 by the braid 44, so that the electrostatic latent image of the photosensitive drum 30 is formed. The developer is developed on the surface. Then, the developer developed in the photosensitive drum 30 and remaining in the developing roller 41 is dropped by friction driving with the supply roller 42. On the other hand, the supply roller 42 with the developer remaining in contact with the developing roller 41 is removed by the contact with the plate member 50, the plate member 50 through the through hole 51 while the residual developer is removed. Will fall to the bottom. At this time, the supply roller 42 is formed of a sponge to remove the developer remaining in the elasticity of the supply roller 42 at the time of contact driving with the edge of each through hole 51. The dropped developer is mixed with the new developer by the driving of the rotating body 43 and supplied to the supply roller 42 side again.
이상에서 설명한 바와 같이 본 고안에 따른 현상장치는 감광드럼(30)에 현상하고 현상롤러(41)에 잔류하는 현상제를 제거시키는 공급롤러(42)로부터 상기 제거수단에 의해서 제거시킴으로써, 공급롤러(42)에 의한 현상롤러(41)에 부착된 잔류 현상제를 효과적으로 제거시킬 수 있고, 또한 공급롤러(42)에 의한 새로운 현상제의 공급을 양호하게 하여 화질을 양호하게 하는 효과를 가진다. 또한 잔류하는 현상제로 인한 공급롤러(42)의 구동부하를 감소시킬 수 있는 효과도 가진다.As described above, the developing apparatus according to the present invention is developed by removing the feed roller 42 from the supply roller 42 which is developed on the photosensitive drum 30 and removes the developer remaining in the developing roller 41. The remaining developer adhering to the developing roller 41 by 42 can be effectively removed, and the supply of new developer by the supply roller 42 can be made good, thereby improving the image quality. It also has the effect of reducing the driving load of the feed roller 42 due to the remaining developer.
상술한 바와 같이 본 고안은 현상롤러에 잔류하는 현상제를 효과적으로 제거하여 현상제의 공급을 양호하게 하고 화질향상에 효과적인 화상형성기의 현상장치를 제공한다.As described above, the present invention provides a developing apparatus for an image forming machine, which effectively removes the developer remaining in the developing roller to improve supply of the developer and to improve image quality.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019940039641U KR200168968Y1 (en) | 1994-12-31 | 1994-12-31 | Developing apparatus for image forming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019940039641U KR200168968Y1 (en) | 1994-12-31 | 1994-12-31 | Developing apparatus for image forming device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR960024401U KR960024401U (en) | 1996-07-22 |
| KR200168968Y1 true KR200168968Y1 (en) | 2000-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019940039641U KR200168968Y1 (en) | 1994-12-31 | 1994-12-31 | Developing apparatus for image forming device |
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| Country | Link |
|---|---|
| KR (1) | KR200168968Y1 (en) |
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1994
- 1994-12-31 KR KR2019940039641U patent/KR200168968Y1/en not_active IP Right Cessation
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| Publication number | Publication date |
|---|---|
| KR960024401U (en) | 1996-07-22 |
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