KR0122531B1 - Laser beam printer - Google Patents

Laser beam printer

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Publication number
KR0122531B1
KR0122531B1 KR1019930028358A KR930028358A KR0122531B1 KR 0122531 B1 KR0122531 B1 KR 0122531B1 KR 1019930028358 A KR1019930028358 A KR 1019930028358A KR 930028358 A KR930028358 A KR 930028358A KR 0122531 B1 KR0122531 B1 KR 0122531B1
Authority
KR
South Korea
Prior art keywords
optical scanning
optical fiber
unit
scanning unit
fiber unit
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Application number
KR1019930028358A
Other languages
Korean (ko)
Other versions
KR950017209A (en
Inventor
김성호
Original Assignee
김광호
삼성전자주식회사
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Application filed by 김광호, 삼성전자주식회사 filed Critical 김광호
Priority to KR1019930028358A priority Critical patent/KR0122531B1/en
Publication of KR950017209A publication Critical patent/KR950017209A/en
Application granted granted Critical
Publication of KR0122531B1 publication Critical patent/KR0122531B1/en

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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
    • 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
    • B41J2/47—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 the combination of scanning and modulation of light
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
    • G02B26/10—Scanning systems
    • G02B26/12—Scanning systems using multifaceted mirrors
    • G02B26/125—Details of the optical system between the polygonal mirror and the image plane

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  • Mechanical Optical Scanning Systems (AREA)

Abstract

It provides an optical scanning unit fixing device to prevent transformation and reduce functioning errors of optical scanning when installed at the optical scanning unit support on the machines main body. When fixing the optical scanning unit(10) to the optical scanning unit support on the machines main body to support the light source(12), rotating polyhedron mirror(14), and reflector(16), make only three attachment locations in a triangular shape in order not to form a diagonal line by locking means(18) such as screw, welding, or riveting. Even though the three locking position are triangularly speed, the line between locking positions is not crossed by rotating polyhedron mirror(14), the principal part of optical scanning unit(10), to prevent transformation of optical scanning unit(10) and reduce optical scanning functioning errors.

Description

광주사유니트의 고정장치Gwangju company unit fixing device

제1도는 통상적인 레이저빔 프린터의 구성을 나타낸 개략도.1 is a schematic view showing the configuration of a conventional laser beam printer.

제2도는 통상적인 광주사유니트의 구성을 나타낸 개략도.Figure 2 is a schematic diagram showing the configuration of a conventional photowangsa unit.

제3도는 종래 기술에 따른 광주사유니트의 체결 상태를 나타낸 평면도.Figure 3 is a plan view showing a fastening state of the optical fiber unit according to the prior art.

제4도는 종래 기술에 따른 광주사유니트의 체결부 주위에서 발생하는 국부변형을 나타낸 가상도.Figure 4 is a virtual diagram showing the local deformation occurring around the fastening portion of the photowangsa unit according to the prior art.

제5도는 본 발명의 바람직한 일실시예에 따른 광주사유니트의 체결 상태를 나타낸 평면도.5 is a plan view showing a fastening state of the optical fiber unit according to an embodiment of the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

10 : 광주사유니트 12 : 광원10: Gwangju company unit 12: Light source

14 : 회전다면경 16 : 반사경14: rotating mirror 16: reflector

18 : 체결수단18: fastening means

본 발명은 레이저빔 프린터에 관한 것으로서, 특히 광주사유니트를 기기본체의 광주사유니트지지부에 고정하기 위한 광주사유니트 고정장치에 관한 것이다.The present invention relates to a laser beam printer, and more particularly, to an optical fiber unit fixing device for fixing the optical fiber unit to the optical fiber unit support of the apparatus main body.

통상적으로, 레이저빔 프린터는 광원(32)이 빛을 주사하고 감광드럼(50)이 빛에 노광되어 잠상이 맺이면 현상기(52)는 감광드럼(50)에 토너를 공급하여 잠상 형태대로 감광드럼(50)에 토너가 묻는다. 이후 용지이송장치(54)에 의해 이송된 용지가 감광드럼(50)과 전사기(56)를 지날 때 전사기(56)에 고압이 걸려 감광드럼(50)의 토너가 용지로 이동되고 용지가 열롤러(58)와 압력롤러(60) 사이를 지나갈 때 열과 압력에 의해 토너가 용지에 정착되어 인쇄물을 배출한다.In general, a laser beam printer, when the light source 32 scans light and the photosensitive drum 50 is exposed to light to form a latent image, the developing unit 52 supplies a toner to the photosensitive drum 50 to form a photosensitive drum in the form of a latent image. Toner is buried in 50. Then, when the paper conveyed by the paper feeder 54 passes the photosensitive drum 50 and the transfer machine 56, a high pressure is applied to the transfer machine 56, and the toner of the photosensitive drum 50 is moved to the paper, and the paper is moved. When passing between the heat roller 58 and the pressure roller 60, the toner is fixed to the paper by heat and pressure to discharge the printed matter.

상술한 바와 같은 과정에 의해 프린트되는 종래의 레이저빔 프린터는, 도 1 내지 도 4에 도시한 바와 같이, 광주사유니트(30)에는 광원(32)과, 상기 광원(32)으로부터의 빛을 X-Y축 방향으로 조사하기 위한 회전다면경(34)과, 상기 회전다면경(34)에서 반사된 빛을 Z방향으로 반사하기 위한 반사경(36)이 설치된다. 상기 광주사유니트(30)는 광주사유니트지지부와 체결수단(40)으로 기기본체에 설치된다. 이때 상기 광주사유니트(30)는 광주사유니트지지부에 4개소로 체결수단(40)에 의해 조립된다.In the conventional laser beam printer printed by the above-described process, as shown in FIGS. 1 to 4, the optical scanning unit 30 XY light source 32 and light from the light source 32. A rotating face mirror 34 for irradiating in the axial direction and a reflecting face 36 for reflecting light reflected from the rotating face mirror 34 in the Z direction are provided. The Gwangju company unit 30 is installed in the device body as a Gwangju company unit support and the fastening means (40). At this time, the optical fiber unit 30 is assembled by the fastening means 40 in four places in the optical fiber unit support.

상기와 같은 구성에 따라서, 상기 광주유니트(30)를 기기본체의 광주사유니트지지부에 조립하고자 할 때는 먼저, 광주사유니트지지부상에 상기 광주사유니트(30)가 고정될 4개의 포인트를 설정한다. 이후 상기 광주사유니트(30)를 체결수단(40)인 나사를 이용하여 광주사유니트지지부에 형성된 3개의 포인트에 체결하면 광주사유니트의 위치가 확정된다. 이어서 나머지 제4의 포인트에 체결수단(40)인 나사를 체결하여 상기 광주사유니트(30)를 광주사유니트지지부에 고정시킨다.According to the above configuration, when assembling the Gwangju unit 30 to the Gwangju company unit support of the device body, first set the four points on which the Gwangju company unit 30 is fixed on the Gwangju company unit support. . Thereafter, when the optical fiber unit 30 is fastened to three points formed on the optical fiber unit support by using the fastening means 40, the position of the optical fiber unit is determined. Subsequently, the screw of the fastening means 40 is fastened to the remaining fourth point to fix the optical fiber unit 30 to the optical fiber unit support.

이때, 상기 광주사유니트(30)를 기기본체의 광주사유니트지지부에 형성된 3개의 포인트에 나사로 고정시킨 후, 나머지 제4포인트 위치와 상기 광주사유니트(30)가 일치하면 다행이지만 조금이라도 오차가 있는 경우에는 상기 체결수단(30)인 나사의 체결력에 의해 광주사유니트(30)가 변형되어진다. 즉 상기 광주사유니트(30)는 도 3도에 도시된 바와 같이 점선방향으로 변형이 발생한다. 다시 말해서 고정된 3개의 포인트와 나머지 포인트가 일치하지 않으면 상기 광주사유니트(30)를 제4포인트(나머지 포인트)가 있는 곳으로 억지로 위치시킨 후 나사로 체결해야 하기 때문에 각각의 포인트와 연결되는 대각선 방향으로 변형이 가장 많이 발생하게 된다.At this time, the optical fiber unit 30 is screwed to three points formed in the optical fiber unit support portion of the device body, and if the remaining fourth point position and the optical fiber unit 30 is the same, it is fortunate, but even a slight error If there is, the optical fiber unit 30 is deformed by the fastening force of the screw which is the fastening means 30. That is, the optical fiber unit 30 is deformed in the dotted line direction as shown in FIG. 3. In other words, if the three fixed points and the remaining points do not coincide, the optical fiber unit 30 must be forcibly positioned to the fourth point (rest point) and then tightened with a screw, so that the diagonal direction is connected to each point. The most deformation occurs.

그후, 레이저빔 프린터의 프린팅 동작이 수행되면, 광원(32)은 빛을 주사하고, 상기 빛은 회전다면경(34)측으로 전송된다. 이때 상기 회전다면경(34)은 광주사유니트(30)에 설치되어 있기 때문에 상기 광주사유니트(30)의 변형에 따라 회전다면경(34)의 위치도 변하게 되어 상기 광원(32)의 빛은 회전다면경(34)에 제대로 전송되지 못한다. 이어서 상기 회전다면경(34)은 광원(32)의 빛을 반사경(36)측으로 조사하지 못하고 결국 광주사유니트(30)의 동작(작동)에는 오차가 발생하게 된다.Then, when the printing operation of the laser beam printer is performed, the light source 32 scans light, and the light is transmitted to the rotating mirror 34 side. At this time, since the rotary mirrors 34 are installed in the optical fiber unit 30, the position of the rotary optical mirrors 34 also changes according to the deformation of the optical fiber unit 30, so that the light of the light source 32 It is not properly transmitted to the rotary face mirror 34. Subsequently, the rotating mirror 34 does not irradiate the light of the light source 32 toward the reflector 36, and thus an error occurs in the operation (operation) of the optical scanning unit 30.

상술한 바와 같이 광주사유니트 고정장치는, 광주사유니트를 기기본체의 광주사유니트지지부에 체결할 때 나사를 이용하여 4개의 포인트로 고정하기 때문에 완전강성체가 아닌한 국부변형이 발생되며, 체결수단으로 체결한 4위치를 연결한 성의 형상이 사각형이 되면 대각선 방향의 선이 생기며, 도 4에 도시한 바와 같이, 선부근이 변형이 많이 일어나게 되는데 상기 체결요소간을 이은 선과 광주사유니트내의 빛의 반사경로가 교차할 경우 광주사유니트 전체의 작동오차가 커지게 된다. 이로 인해 감광드럼의 표면을 균일하게 노광시킬 수 없으며, 또한 용지상에 형성되는 문자의 정밀도가 떨어지는 문제점이 발생하였다.As described above, the Gwangju company unit fixing device, when fastening the Gwangju company unit to the Gwangju company unit support part of the main body of the device by using four screws to fix the local deformation occurs unless the rigid rigid body, fastening means When the shape of the castle connecting the four positions fastened to form a quadrangle, a diagonal line is formed, and as shown in FIG. 4, a lot of deformation occurs in the vicinity of the line. If the reflecting paths cross, the operation error of the whole Gwangju unit becomes large. For this reason, the surface of the photosensitive drum cannot be exposed uniformly, and the problem that the precision of the character formed on the paper falls.

따라서 본 발명의 목적은 광주사유니트를 기기본체의 광주사유니트지지부에 설치했을 때 변형을 줄이는 광주사유니트 고정장치를 제공하는데 있다.Therefore, an object of the present invention is to provide a photowangsa unit fixing device for reducing the deformation when the photowangsa unit is installed in the photocopier unit unit support of the device body.

본 발명은 다른 목적은 레이저빔 프린터의 광주사의 작동오차를 줄이는 광주사유니트 고정장치를 제공하는데 있다.Another object of the present invention is to provide a photowangsa unit fixing device for reducing the operating error of the optical scanning of the laser beam printer.

이러한 본 발명의 목적들을 용이하게 달성하기 위하여 본 발명은 광원과, 회전다면경과, 반사경을 지지하기 위한 광주사유니트를 기기본체의 광주사유니트지지부에 지지할때 고정위치를 대각선이 생기지 않는 형태 즉 삼각형이 되도록 3개소만 체결수단으로 고정함을 특징으로 한다. 또한 삼각형으로 3개소에서 체결하더라도 고정위치 사이를 선으로 연결하였을때 광주사유니트의 주요부분, 즉 회전다면경을 경유하지 않는 위치에 설치하였다.In order to easily achieve the objects of the present invention, the present invention provides a light source, a rotating polyhedron, and a optical fiber unit for supporting the optical mirror unit to support the optical fiber unit support of the device body so that a fixed position does not occur diagonally. It is characterized by fixing only three places by the fastening means to be a triangle. In addition, even if tightened in three places by a triangle, when the connection between the fixed position by a line was installed in the main part of the Gwangju company unit, that is, the position not via the rotary face mirror.

이하 본 발명의 바람직한 실시예가 첨부된 도면과 함께 상세히 설명될 것이다.Hereinafter, preferred embodiments of the present invention will be described in detail with the accompanying drawings.

우선 평면을 구성하는 최소 단위는 세개의 포인트만 있으면 충분하며, 4개의 포인트로 하나의 평면을 구성하기 위해서는 이미 3개의 포인트로 설정된 평면위에 제4의 포인트를 위치하게 하는 수밖에 없다는 기본원리를 인식해야 한다.First of all, it is necessary to recognize the basic principle that the minimum unit constituting the plane is only three points, and in order to form one plane with four points, the fourth point must be placed on the plane already set with three points. do.

본 발명에 따른 광주사유니트(10)의 고정장치는 도 5에 도시한 바와 같이, 광원(12)과, 상기 광원(12)에서 나온 빛을 주사하기 위한 회전다면경(14)과, 상기 회전다면경(14)에서 반사된 빛을 Z축방향으로 빛을 반사하기 위한 반사경(16)을 장착한 광주사유니트(10)는 기기본체의 광주사유니트지지부에 3개소에 체결수단(18)으로 고정한다. 이때 상기 체결수단(18)은 나사, 용접 또는 리벳팅으로 한다.As shown in FIG. 5, the fixing device of the optical fiber unit 10 according to the present invention includes a light source 12, a rotating polyscope 14 for scanning light emitted from the light source 12, and the rotation. The optical fiber unit 10 equipped with the reflector 16 for reflecting the light reflected from the multi-faceted mirror 14 in the Z-axis direction is fastened to three places in the optical fiber unit support part of the apparatus body. Fix it. At this time, the fastening means 18 is a screw, welding or riveting.

상기와 같은 구성에 따라서, 광주사유니트(10)를 광주사유니트지지부의 3개소에 체결수단(18)으로 고정하면, 앞에서 설명한 기본원리 평면을 구성하기 위해서는 최소 3개의 포인트만 있으면 충분하다에 의해 상기 광주사유니트(30)의 변형이 발생하지 않는다. 즉 제4의 포인트를 설정할 때 발생하는 상기 제4포인트의 치수공차 또는 가공공차를 염려할 필요가 없기 때문에 광주사유니트지지부의 3개의 포인트가 이루는 평면위에 광주사유니트(10)가 자연스럽게 위치되어 고정된다.According to the configuration as described above, if the optical fiber unit 10 is fixed to the three locations of the optical fiber unit support by the fastening means 18, at least three points are sufficient to constitute the basic principle plane described above by Deformation of the optical fiber unit 30 does not occur. That is, since there is no need to worry about the dimension tolerance or the processing tolerance of the fourth point generated when setting the fourth point, the optical fiber unit 10 is naturally positioned and fixed on the plane formed by the three points of the optical fiber unit support. do.

이상에서 살펴본 바와 같은 본 발명은 광주사유니트를 기기본체의 광주사유니트지지부에 설치했을 때 상기 광주사유니트의 변형을 방지할 수 있으며, 이에 따라 광원, 회전다면경 및 반사경의 작동 오차를 줄일 수 있는 효과가 있다.As described above, the present invention can prevent the deformation of the optical fiber unit when the optical fiber unit is installed in the optical fiber unit support of the device body, thereby reducing the operating errors of the light source, the rotating mirror and the reflector. It has an effect.

Claims (4)

빛을 내는 광원(12)과, 상기 광원(12)의 빛을 주사하기 위한 회전다면경(14)과, 상기 회전다면경(14)으로부터 반사된 빛을 감광드럼(50)으로 조사하기 위한 반사경(16)을 설치한 광주사유니트(10)를 기기본체에 설치하기 위한 광주사유니트지지부의 3개소에 체결수단(18)으로 고정하고, 상기 체결수단(18) 위치를 선으로 연결하였을 때 생기는 삼각형의 내부에 회전다면경(14)이 위치하는 것을 특징으로하는 광주사유니트의 고정장치.A light source 12 emitting light, a rotating mirror 14 for scanning the light of the light source 12, and a reflecting mirror for irradiating the light reflected from the rotating mirror 14 to the photosensitive drum 50 Gwangju company unit (16) having the installation (16) is fixed to the three places of the Gwangju company unit support for the installation in the machine body by the fastening means (18), which occurs when connecting the fastening means (18) position by a line Fixing device of the optical fiber unit, characterized in that the rotating multi-faceted mirror 14 is located inside the triangle. 제1항에 있어서, 상기 체결수단(18)은 나사로 함을 특징으로 하는 광주사유니트의 고정장치.The device of claim 1, wherein the fastening means (18) is made of a screw. 제1항에 있어서, 상기 체결수단(18)은 용접함을 특징으로 하는 광주사유니트의 고정장치.The fastening device of claim 1, wherein the fastening means (18) is welded. 제1항에 있어서, 상기 체결수단(18)은 리벳팅함을 특징으로 하는 광주사유니트의 고정장치.The fastening device of claim 1, wherein the fastening means (18) is riveting.
KR1019930028358A 1993-12-18 1993-12-18 Laser beam printer KR0122531B1 (en)

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KR0122531B1 true KR0122531B1 (en) 1997-11-11

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