KR0122128Y1 - Laser scanning unit of a laser printer - Google Patents
Laser scanning unit of a laser printerInfo
- Publication number
- KR0122128Y1 KR0122128Y1 KR2019950011631U KR19950011631U KR0122128Y1 KR 0122128 Y1 KR0122128 Y1 KR 0122128Y1 KR 2019950011631 U KR2019950011631 U KR 2019950011631U KR 19950011631 U KR19950011631 U KR 19950011631U KR 0122128 Y1 KR0122128 Y1 KR 0122128Y1
- Authority
- KR
- South Korea
- Prior art keywords
- fixing
- exposure
- laser printer
- fixing plate
- extended
- Prior art date
Links
Classifications
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- 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
- B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
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- 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
- B41J2/44—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 using single radiation source per colour, e.g. lighting beams or shutter arrangements
- B41J2/442—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 using single radiation source per colour, e.g. lighting beams or shutter arrangements using lasers
Abstract
1. 청구 범위에 기재된 고안이 속한 기술분야1. TECHNICAL FIELD OF THE INVENTION
본 고안은 레이저 프린터의 노광부 고정장치에 관한 것이다.The present invention relates to an exposure unit fixing device of a laser printer.
2. 고안이 해결하려고 하는 기술적 과제2. The technical problem the invention is trying to solve
본 고안은 노광부를 고정함에 있어, 경사부의 조립 및 위치결정이 용이하고 정도유지가 잘되는 노광부 고정장치를 제공하는데 있다.The present invention is to provide an exposure portion fixing device that is easy to assemble and position the inclined portion, and maintains the accuracy in fixing the exposure portion.
3. 고안의 해결방법의 요지3. Summary of solution of design
본 고안은 통상의 노광부 고정장치에 있어, 하우징의 프레임면상에 엇간격으로 두개의 고정돌기를 형성시키고, 노광부의 전반부고정판에 엇간격으로 뚫어진 돌기구멍을 형성시켜, 그들의 조립으로 고정되게 하는 장치이다.The present invention is a device for fixing a conventional exposure portion, the two fixing projections at intervals on the frame surface of the housing, and the projection holes drilled at intervals in the first half fixing plate of the exposure portion to be fixed by their assembly to be.
4. 고안의 중요한 용도4. Important uses of the devise
본 고안은 엇간격의 돌기를 형성시켜 노광부를 고정하므로 초기 고정위치를 찾기쉬워 노광부 장착이 용이하며, 보다 확실한 정도유지를 할 수 있어 기기에 대한 신뢰성이 향상되는 효과가 있다.The present invention has an effect of improving the reliability of the device because it is easy to find the initial fixed position, so that it is easy to find the initial fixed position by forming the projections of the gaps, and thus the accuracy of the reliability can be maintained.
Description
제1도는 전자사진 프로세서의 개략도.1 is a schematic diagram of an electrophotographic processor.
제2도는 종래의 노광부 고정장치의 구성도.2 is a block diagram of a conventional exposure unit fixing device.
제3도는 본 고안에 따른 노광부 고정장치의 구성도.3 is a configuration diagram of an exposure unit fixing device according to the present invention.
제4도는 본 고안에 따른 노광부가 세트에 장착되었을때의 상태도.4 is a state diagram when the exposure unit according to the present invention is mounted on the set.
제5도는 제4도의 요부인 전반부고정판에 대한 상태도.5 is a state diagram for the first half fixing plate, which is the main part of FIG.
제6도는 제3도의 A부에 대한 평면도.6 is a plan view of part A of FIG.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
20:노광부(Laser Scanning Unit) 21:케이스(Case)20: Laser Scanning Unit 21: Case
22a,22b:구멍(Hole) 23:후부고정판22a, 22b: Hole 23: Rear fixing plate
24a,24b:돌기홈 25:전반부고정판24a, 24b: projection groove 25: overall fixing plate
26:하우징(Housing) 27:프레임(Frame)26: Housing 27: Frame
28:나사구멍(Screw Hole) 29:고정돌기28: screw hole 29: fixing protrusion
30a,30b:장착돌기 31:후부고정돌기30a, 30b: mounting protrusion 31: rear fixing protrusion
32a,32b:엇간격32a, 32b: gap
본 고안은 레이저 프린터에 관한 것으로, 특히 감광드럼에 빛을 조사하는 부분인 노광부(Laser Scanning Unit)를 고정시키기 위한 레이저 프린터의 노광부 고정장치에 관한 것이다.The present invention relates to a laser printer, and more particularly, to an exposure part fixing device of a laser printer for fixing a laser scanning unit, which is a part for irradiating light to a photosensitive drum.
통상적으로 사용되는 전자사진 방식을 이용한 기긱의 동작과정을 제1도를 참조하여 설명하면, 대전기(42)의 코로나 방전에 의해 감광드럼(Photoconductive Drum)(50)의 표면을 골고루 대전하고 상기 감광드럼(50)의 회전에 의해 대전된 부분은 노광부(Laser Scanning Unit)(41)를 통해 화상을 형성하기 위한 전기적 신호를 받아 상기 감광드럼(50)의 표면을 노광시키면 초기 대전된 상태에서 빛을 받은 부분은 정전잠상(Electro-static Latent Image)을 형성하게 되며, 이때 상기 정전잠상(50)을 토너(toner) 화상으로 만들기 위해 상기 감광드럼(50) 표면과 인접하고 있는 현상기(44)를 지나는 동안 토너(toner)로 현상되어 가시상으로 변하게 되고, 이어서 급지카세트(47)에 장착된 기록용지(46)가 급지롤러(45)에 의해 급지된 기록용지 위에 전사기(48)의 고압작용으로 상기 감광드럼(50) 표면의 토너 화상을 기록용지(46)로 전사되게 한다. 이때 상기 기록용지(46)는 정전기력에 의해 상기 감광드럼(50) 표면에 밀착되어지며 분리기는 상기 밀착된 기록용지(46)를 분리시켜 주는 역할을 수행한다.Referring to Fig. 1, the operation process of Giggig using a conventional electrophotographic method is uniformly charged on the surface of the photoconductive drum 50 by the corona discharge of the charger 42 and the photosensitive. The portion charged by the rotation of the drum 50 receives an electrical signal for forming an image through the laser scanning unit 41 and exposes the surface of the photosensitive drum 50 to light in an initial charged state. The received portion forms an electrostatic latent image, wherein the developer 44 adjacent to the surface of the photosensitive drum 50 is used to make the electrostatic latent image 50 a toner image. During development, it develops into a toner and turns into a visible image. Then, the recording paper 46 mounted on the paper feeding cassette 47 acts on the high pressure of the transfer machine 48 on the recording paper fed by the paper feeding roller 45. Surface of the photosensitive drum 50 A toner image is transferred onto the recording sheet 46. At this time, the recording paper 46 is in close contact with the surface of the photosensitive drum 50 by the electrostatic force and the separator serves to separate the close recording paper 46.
그후, 분리된 기록용지(46)는 이송되어져 정착부의 히트롤러(Heating Roller)(51)와 압축롤러(Pressure Roller)(52) 사이를 통과하면 열과 압력에 의해 기록용지(46)면에 상(Image)이 정착되어 배지롤러(Exit Roller)(54)를 거쳐 인쇄된 용지가 스태커(Stacker)(53) 또는 상부로 이송되어 원하는 인쇄가 이루어진다.Thereafter, the separated recording paper 46 is transported and passes between the heating roller 51 and the compression roller 52 of the fixing unit so that the recording paper 46 is formed on the surface of the recording paper 46 by heat and pressure. The image is fixed and the paper printed through the exit roller 54 is transferred to the stacker 53 or the upper part to achieve a desired printing.
한편, 전사기(48)를 지난 감광드럼(50) 표면에 잔여분의 토너와 잠상이 존재하게 되는데, 여기서 상기 토너는 청소기(Clearning Blade)(40)에 의해 제거되며, 상기 잔류전하는 잠상제거램프(Pre-erase Lamp Arrey)(43)에 의해 제거되도록 되어 있다.Meanwhile, residual toner and a latent image exist on the surface of the photosensitive drum 50 passing through the transfer machine 48, wherein the toner is removed by a cleaner blade 40, and the residual charge is removed from the latent image removal lamp ( Pre-erase Lamp Arrey (43) is to be removed.
상기와 같은 레이저 프린터에 있어서 노광부는 레이저 다이오드의 빛이 렌즈를 통해 회전 다면경에 의해 반사되어 구면렌즈와 트릭렌즈를 통하여 반사미터에 의해 빛이 반사되어 감광드럼에 주사되도록 하고, 또한 레이저 프린터의 크기(Size)를 줄이기 위해 세트내에 경사(12°)지게 장착된 것이다.In the laser printer as described above, the exposure unit reflects the light of the laser diode by the rotating polygonal mirror through the lens and reflects the light by the reflectometer through the spherical lens and the trick lens to scan the photosensitive drum. To reduce the size, it is mounted obliquely (12 °) in the set.
상기 노광부를 세트 내에 장착함에 있어, 종래에는 제2도에 도시한 바와 같이 노광부(20)의 케이스(21) 상면 후부 중앙에서 신장되어, 그 면에 나사를 끼워넣기 위한 구멍(13)을 형성하고, 밑면은 경사를 이루는 후부고정판(14)과, 상기 노광부(20)의 전반부 양측면에서 각각 면과 경사지게 신장되어 신장된 면에 나사를 끼워 넣기 위한 구멍(13)을 형성하는 전반부고정판(15)과, 하우징(16)의 좌우 프레임(17)면에서 상향으로 각각 돌기되어 상기 노광부(20)의 전반부고정판(15)이 나사에 의해 고정되도록 나사구멍(18)을 형성하는 고정돌기(19a)와, 하우징(16)의 일면 중앙에서 상향으로 돌기되어 상기 노광부(20)의 후부고정판(14)이 나사에 의해 고정되도록 나사구멍(18)을 형성하는 후부 고정돌기(19b)로 구성되어 상기 노광부(20)의 전반부고정판(15)과 후부고정판(14)을 상기 프레임(17)에 형성된 각각의 고정돌기(19a,19b) 위에 구멍(13)과 나사구멍(18)이 일치하도록 위치시킨 뒤 나사로 체결하여 고정한다.In mounting the exposed portion in the set, it is conventionally extended from the center of the rear portion of the upper surface of the upper surface of the case 21 of the exposed portion 20, as shown in FIG. 2 to form a hole 13 for screwing the surface. And the bottom surface is the rear panel fixing plate 14 to form an inclined, and the front panel fixing plate 15 to form a hole 13 for inserting the screw on the extended surface inclined and inclined in each of both sides of the first half of the exposed portion 20. And the fixing projections 19a which protrude upward from the left and right frame 17 surfaces of the housing 16 to form the screw holes 18 so that the first half fixing plate 15 of the exposure portion 20 is fixed by screws. ) And a rear fixing protrusion 19b which protrudes upward from the center of one surface of the housing 16 to form a screw hole 18 so that the rear fixing plate 14 of the exposure part 20 is fixed by screws. The front part fixing plate 15 and the rear part fixing plate 14 of the exposure part 20 After placing the machine frame 17, each of the fixing projection (19a, 19b) holes 13 and screw holes 18 formed on the matches and fixed by fastening with screws.
이때 노광부(20)의 전반부가 위로 올라가게 경사진 형태로 고정된다.At this time, the first half of the exposure unit 20 is fixed in an inclined form to rise upward.
상기한 종래 기술에서 노광부를 경사지게 장착되므로 나사 체결시 노광부가 경사진 방향으로 밀려나게 되어 정도유지가 어려운 단점이 있었다.Since the exposure part is inclined in the prior art, the exposure part is pushed in the inclined direction when the screw is fastened, which makes it difficult to maintain the accuracy.
따라서 본 고안의 목적은 노광부를 고정함에 있어 경사부의 조립 및 위치 결정이 용이하고 정도유지가 잘되는 노광부 장치를 제공하는데 있다.Accordingly, an object of the present invention is to provide an exposure part device which is easy to assemble and position the inclined part and maintains accuracy in fixing the exposure part.
상기한 목적에 따라 본 고안은 통상의 노광부 고정장치에 있어 하우징의 프레임면상에 엇간격으로 두개의 고정돌기를 형성시키고, 노광부의 전반부 고정판에 엇간격으로 뚫어진 돌기구멍을 형성시켜 그들의 조립으로 고정됨으로 특징으로 한다.In accordance with the above object, the present invention is fixed in their assembly by forming two fixing projections at intervals on the frame surface of the housing in a conventional exposure unit fixing device, and forming the projection holes drilled at intervals in the fixing plate of the first half of the exposure unit. It is characterized by.
이하 본 고안의 바람직한 실시예가 첨부된 도면과 함께 상세히 설명될 것이다. 도면들중 동일한 부품들은 가능한한 어느곳에서든지 동일한 부호들을 나타내고 있음을 유의하여야 한다.Hereinafter, preferred embodiments of the present invention will be described in detail with the accompanying drawings. It should be noted that the same parts in the figures represent the same reference signs wherever possible.
본 고안에 따른 레이저 프린터의 노광부 고정장치는 제3도 내지 제5도에 도시한 바와 같이 노광부(20)의 케이스(21)상면 후부 중앙에서 신장되어, 신장된 면에 나사를 끼워 넣기 위한 구멍(22a)을 형성하고 밑면은 경사를 이루는 후부고정판(23)과, 상기 노광부(20)의 전반부 양측면에서 각각 신장되어 노광부의 케이스(21)면과 경사를 이루는 밑면의 일측에 나사를 끼워넣기 위한 구멍(22b)을 이루고, 동일면상에서 상기 구멍(22b)의 앞과 옆에 돌기물이 자리하도록 돌기홈(24a,24b)을 이루며, 밑면의 양단에서 상향 절곡되어 상기 노광부(20) 측면에 덧대어진 전반부고정판(25)과, 하우징(26)의 프레임(27)면에서 상향으로 돌기되어 나사를 체결하기 위해 나사구멍(28)을 가지는 고정돌기(29)와 동일면상에서 상기 고정돌기(29)의 앞과 옆에서 상향으로 돌기된 장착돌기(30a,30b)와 상기 하우징(26)의 일면 중앙에서 상향으로 돌기되어 상기 노광부(20)의 후부고정판(23)이 나사에 의해 고정되도록 나사구멍(28)을 가지는 후부고정돌기(31)로 구성되어 상기 노광부(20)의 전반부고정판(25)의 돌기홈(24a,24b)에 상기 하우징(26)의 프레임(27)상의 장착돌기(30a,30b)들이 끼워지도록 하면, 나머지 각각의 구멍(22a,22b)과 고정돌기(29,31)의 나사구멍(28)은 자동으로 일치되게 되어있어 일치부분에 나사를 체결하면 장착이 완료된다.The exposure unit fixing device of the laser printer according to the present invention extends from the center of the rear side of the upper surface of the case 21 of the exposure unit 20, as shown in FIGS. A hole 22a is formed, and the bottom surface is inclined, and the rear fixing plate 23 is extended from both sides of the first half of the exposed portion 20, and the screw is attached to one side of the bottom surface inclined with the case 21 surface of the exposed portion. Forming a hole 22b for loading, forming protrusions 24a and 24b on the same surface so that the protrusions are located at the front and the side of the hole 22b, and are bent upward at both ends of the bottom surface to expose the side surface of the exposure part 20. The fixing projections 29 on the same plane as the fixing protrusions 29 having the first half fixing plate 25 and the fixing protrusions 29 having the screw holes 28 for fastening the screws at the surface of the frame 27 of the housing 26. Mounting projections (30a) which are upwardly protruded from the front and side of the 30b) and a rear fixing protrusion 31 having a screw hole 28 to protrude upward from the center of one surface of the housing 26 to fix the rear fixing plate 23 of the exposure part 20 by screws. When the mounting protrusions 30a and 30b on the frame 27 of the housing 26 are fitted into the protrusion grooves 24a and 24b of the first half fixing plate 25 of the exposure part 20, the remaining holes 22a are respectively provided. And 22b) and the screw holes 28 of the fixing projections 29 and 31 are automatically matched, and the mounting is completed when the screw is fastened to the matching portion.
이때 나사 체결시 발생되는 노광부의 밀림현상은 상기 전반부고정판(25)상의 돌기홈(24a,24b)에 끼워진 장착돌기(30a,30b)들에 의해 저지되고, 상기 돌기홈(24a,24b)간의 엇간격(32)은 상기 노광부(20)의 전·후·좌·우방향의 유동을 저지해 주게 된다.At this time, the sliding phenomenon of the exposed portion generated when screwing is prevented by the mounting projections (30a, 30b) fitted in the projection grooves (24a, 24b) on the first half fixing plate 25, the gap between the projection grooves (24a, 24b) The interval 32 prevents the flow of the exposure unit 20 in the front, rear, left, and right directions.
이상에서 살표본 바와같은 본 고안은 엇간격의 돌기를 형성시켜 노광부를 고정하므로 초기 고정위치를 찾기쉬워 노광부 장착이 용이하며, 보다 확실한 정도 유지를 할 수 있어 기기에 대한 신뢰성이 향상되는 효과가 있다.As described above, the present invention forms an offset protrusion to fix the exposure part, so that the initial fixing position is easy to find, so that the exposure part can be easily installed, and the reliability of the device can be improved by maintaining a more reliable degree. have.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019950011631U KR0122128Y1 (en) | 1995-05-27 | 1995-05-27 | Laser scanning unit of a laser printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019950011631U KR0122128Y1 (en) | 1995-05-27 | 1995-05-27 | Laser scanning unit of a laser printer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR960036609U KR960036609U (en) | 1996-12-16 |
| KR0122128Y1 true KR0122128Y1 (en) | 1998-08-17 |
Family
ID=19414257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019950011631U KR0122128Y1 (en) | 1995-05-27 | 1995-05-27 | Laser scanning unit of a laser printer |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR0122128Y1 (en) |
-
1995
- 1995-05-27 KR KR2019950011631U patent/KR0122128Y1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR960036609U (en) | 1996-12-16 |
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