KR200142442Y1 - Developing roller driving device for laser beam printer - Google Patents
Developing roller driving device for laser beam printer Download PDFInfo
- Publication number
- KR200142442Y1 KR200142442Y1 KR2019960035947U KR19960035947U KR200142442Y1 KR 200142442 Y1 KR200142442 Y1 KR 200142442Y1 KR 2019960035947 U KR2019960035947 U KR 2019960035947U KR 19960035947 U KR19960035947 U KR 19960035947U KR 200142442 Y1 KR200142442 Y1 KR 200142442Y1
- Authority
- KR
- South Korea
- Prior art keywords
- photosensitive drum
- developing roller
- developing
- driving
- gear
- 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.)
- Expired - Lifetime
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J23/00—Power drives for actions or mechanisms
- B41J23/02—Mechanical power drives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/435—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of radiation to a printing material or impression-transfer material
Landscapes
- Dry Development In Electrophotography (AREA)
Abstract
이 고안은 접촉현상방식의 레이져빔프린터에 있어서 일정한 닙(NIP)을 유지하기 위한 현상로울러구동장치에 관한 것으로서, 감광체드럼에 부착되는 구동기어에 의해 구동되는 현상로울러를 갖는 접촉식현상방식으로 이루어지는것에 있어 본체 에서 구동력을 전달받아 현상로울러로 구동력을 전달하는 감광체드럼과, 상기 감광체드럼에 고정되는 구동용기어와, 상기 감광체드럼구동기어에서 구동력을 전달하는 제1아이들기어와 제2아이들기어 및 현상로울러에 구동력을 전달하는 현상로울러구동기어 및 현상로울러를 지지하는 베어링이 현상기하우징에 의하여 규제되도록 구성하여서 된것이다.The present invention relates to a developing roller driving apparatus for maintaining a constant nip in a contact developing laser beam printer, and has a contact developing method having a developing roller driven by a driving gear attached to a photosensitive drum. The photosensitive drum which receives the driving force from the main body and transmits the driving force to the developing roller, the driving gear fixed to the photosensitive drum, the first idler gear and the second idler gear transferring the driving force from the photosensitive drum driving gear The driving roller and the bearing supporting the developing roller are regulated by the developing housing to transfer the driving force to the roller.
Description
본 고안은 접촉현상방식의 레이져빔프린터에 있어서 일정한 닙(NIP)을 유지하기 위한 현상로울러구동장치에 관한 것이다.The present invention relates to a phenomenon roller driving apparatus for maintaining a constant nip (NIP) in a laser beam printer of the contact development method.
일반적으로 접촉현상방식이 채용되는 레이져빔프린터는 도 1 및 도 2의 도시와같이 감광체드럼(1)과 현상로울러(2)가 접촉되어 있고, 여기에 감광체구동기어(3)와 현상로울러구동기어(4)가 맞물려서 구동력을 감광체구동기어에서 현상로울러구동기어로 전달하도록 되어 있다.In general, a laser beam printer employing a contact developing method has a photosensitive drum 1 and a developing roller 2 in contact with each other, as shown in FIGS. 1 and 2, wherein the photosensitive member driving gear 3 and the developing roller are driven. (4) is meshed to transfer the driving force from the photosensitive body drive gear to the drive gear as well as to the phenomenon.
그리고 고무재질의 현상로울러와 감광체드럼의 접촉부에 일정한 닙을 형성 하기 위하여 현상로울러샤프트지지베어링(5)에 압축스프링(6)을 이용하여 일정한 힘으로 밀어 주도록 하고 있다.Then, in order to form a constant nip at the contact portion of the developing roller and the photosensitive drum of the rubber material, the developing roller shaft support bearing 5 is pushed with a constant force using the compression spring 6.
그러나 감광체구동기어에서 현상로울러로 현상로울러구동기어로 동력을 전달하면서 현상로울러의 부하에 따라서 감광체드럼과 현상로울러 사이의 닙이 변동 하게 된다.However, the nip between the photosensitive drum and the developing roller fluctuates according to the load of the developing roller while transmitting power from the photosensitive member driving gear to the developing roller.
그것은, 도 3의 (A),(B)에 보인바와 같이 기어로 동력을 전달할 경우 발생 하는 치면압력각(α) 방향의 분력 때문이다.This is because of the component force in the tooth surface pressure angle α generated when power is transmitted to the gear as shown in FIGS. 3A and 3B.
즉, 전달력 f에 대한 분력 a에 의해서, 현상로울러가 드럼으로부터 멀어 지는 방향으로 힘을 받게 된다.That is, by the component force a with respect to the transmission force f, the developing roller receives a force in a direction away from the drum.
그러므로 현상 닙이 변하고 따라서 부하의 변동이 생기며, 이로인하여 현상특성과 구동전달이 불원활하여 균일한 화상을 얻을수 없게 되는 문제점이 초래되고 있다.Therefore, the developing nip changes, and thus the load fluctuates. This causes a problem in that a developing image and driving transmission are inadequate and a uniform image cannot be obtained.
본 고안은 상기한바와 같은 종래의 제반 문제점을 감안하여, 감광체드럼에서 현상로울러로 구동력을 감광체드럼기어에서 현상로울러로 직접 전달함으로써 발생하는 분력을 없애어서 보다 안정된 화상을 얻으려는데 그 목적이 있는 것이다.The present invention has been made in view of the above-mentioned problems in the related art, and aims to obtain a more stable image by eliminating the component force generated by directly transmitting the driving force from the photosensitive drum to the developing roller in the photosensitive drum. .
본 고안은 상기 목적을 달성하기 위하여, 구동전달방향과 구동전달력을 일정하게 유지하기 위하여 두 개의 기어를 추가로 설치하고 현상로울러와 감광체드럼 간의 닙을 일정하게 유지하기 위하여 현상로울러지지베어링의 움직임을 규제하는 규제벽을 하우징에 설치시켜 구성되도록 함을 그 특징으로 한다.In order to achieve the above object, the present invention provides two additional gears to maintain a constant driving transmission direction and driving transmission force, and moves a developing roller bearing to maintain a constant nip between the developing roller and the photosensitive drum. It is characterized in that it is configured to be installed in the housing to regulate the regulatory wall.
도 1 및 도 2는 종래기술을 설명하는 현상부의 일부 평면도 및 일측 개략 구성도,1 and 2 are a partial plan view and one side schematic configuration diagram of a developing unit for explaining the prior art;
도 3의 (A),(B)는 종래기술을 설명하기 위한 감광체 및 현상로울러구동 기어의 구동관련도 및 치면압력각의 분력을 보인 관련도,3 (A), (B) is a related figure showing the drive relatedness and the component force of the tooth pressure pressure angle of the photosensitive member and the development gear drive for explaining the prior art,
도 4는 본 고안에 따른 현상로울러구동장치를 보인 평면도,Figure 4 is a plan view showing a developing roller driving apparatus according to the present invention,
도 5는 본 고안에 따른 현상로울러구동장치의 일측면도이다.5 is a side view of the developing roller driving apparatus according to the present invention.
* 도면의 주요 부분에 대한 부호의 설명 *Explanation of symbols on the main parts of the drawings
10 : 감광체드럼 11 : 샤프트10: photosensitive drum 11: shaft
12 : 현상기하우징 13 : 제1아이들기어12: developing housing 13: first children gear
14 : 제2아이들기어 15 : 현상로울러구동기어14: 2nd children gear 15: driving gear
16 : 현상로울러 17 : 지지베어링16: bearing roller 17: support bearing
18 : 압축스프링 19 : 규제벽18: compression spring 19: regulation wall
20 : 감광체드럼구동기어20: Photosensitive drum drive gear
이하, 본고안을 첨부된 바람직한 실시도면에 의거하여 보다 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
도 4 및 도 5는 본고안에 따른 현상로울러구동장치를 보인 것으로서, 감광체드럼(10)을 지지하는 샤프트(11)가 현상기하우징(12)에 설치되어 있고, 상기 감광체드럼(10)에서 제1아이들기어(13)와 제2아이들기어(14)를 통하여 현상로울러구동기어(15)로 동력을 전달하도록 되어 있다.4 and 5 show a developing roller driving apparatus according to the present invention, in which a shaft 11 for supporting the photosensitive drum 10 is installed in the developing housing 12, and the first children in the photosensitive drum 10. The power is transmitted to the driving gear 15 through the gear 13 and the second idle gear 14.
그리고 현상로울러(16)는 지지베어링(17)에 의하여 일단이 현상기하우징(12)에 고정된 압축스프링(18)에 의하여 감광드럼(10) 방향으로 힘을 받으면서지지 되도록 되어 있다.The developing roller 16 is supported by the supporting bearing 17 while being supported by the compression spring 18 fixed to the developing housing 12 in the direction of the photosensitive drum 10.
또한, 현상기하우징(12)에 규제벽(19)을 설치하여 일정범위 이상 감광체드럼(10)으로 밀리지 않도록 되어 있다.In addition, the restricting wall 19 is provided in the developing housing 12 so as not to be pushed to the photosensitive drum 10 by a predetermined range or more.
이와같이 구성된 본고안은 감광체드럼구동기어(20)에 의하여 제1아이들기어(13) 와제2아이들기어(14)를 통하여 현상로울러(16)를 구동시키게 된다.The present invention configured as described above drives the developing roller 16 through the first idler gear 13 and the second idler gear 14 by the photosensitive drum driving gear 20.
이때, 현상로울러구동기어(15)에 전달되는 힘의 압력각 방향 분력은 감광체 드럼(10)과 현상로울러(16)를 서로 밀착시키는 방향으로 되어 기어구동전달력에 의하여 감광체드럼(10)과 현상로울러(16)가 멀어지지 않도록 하고, 현상기하우징(12)에 규제벽(19)이 설치되어 현상로울러(16)를 지지하는 베어링(17)이 일정범위 이상 감광체드럼(10)으로 가까워지지 않도록 규제한다.At this time, the pressure angular component of the force transmitted to the developing roller driving gear 15 is in a direction in which the photosensitive drum 10 and the developing roller 16 are in close contact with each other, and the photosensitive drum 10 is developed by the gear driving transfer force. The roller 16 is not moved away, and the restricting wall 19 is installed in the developing housing 12 so that the bearing 17 supporting the developing roller 16 does not come close to the photosensitive drum 10 by a certain range or more. do.
그리고 반대방향에서 압축스프링(18)으로 밀어줌으로써 감광체드럼(10)과 현상로울러(16)가 벌어지지 않도록 일정한 힘으로 밀어주게 된다.In addition, by pushing the compression spring 18 in the opposite direction, the photosensitive drum 10 and the developing roller 16 are pushed with a constant force so as not to be opened.
그러므로 본고안은 감광체드럼과 현상로울러 사이의 닙이 구동기어의 전달력에 의하여 벌어지지 않도록하여 현상에서의 화상 균일성을 높이게 되는 효과를 제공한다.Therefore, this paper provides the effect that the nip between the photosensitive drum and the developing roller is not opened by the transmission force of the drive gear, thereby increasing the image uniformity in the developing.
그리고 구동기어에 의한 현상닙의 변화를 없애 주므로서 구동전달력의 변화에 의한 소음의 증가를 줄이고 감광드럼의 불균일 회전을 줄여 줌으로써 화상의 안정성을 향상시키게 되는 효과를 제공하게 되는 것이다.In addition, by eliminating the change of the developing nip by the drive gear, it is possible to provide an effect of improving the stability of the image by reducing the increase of noise due to the change of the driving transmission force and reducing the uneven rotation of the photosensitive drum.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019960035947U KR200142442Y1 (en) | 1996-10-28 | 1996-10-28 | Developing roller driving device for laser beam printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019960035947U KR200142442Y1 (en) | 1996-10-28 | 1996-10-28 | Developing roller driving device for laser beam printer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR19980022595U KR19980022595U (en) | 1998-07-25 |
| KR200142442Y1 true KR200142442Y1 (en) | 1999-06-01 |
Family
ID=19471083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019960035947U Expired - Lifetime KR200142442Y1 (en) | 1996-10-28 | 1996-10-28 | Developing roller driving device for laser beam printer |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR200142442Y1 (en) |
-
1996
- 1996-10-28 KR KR2019960035947U patent/KR200142442Y1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| KR19980022595U (en) | 1998-07-25 |
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