KR19990005353U - Photosensitive belt track position detecting device of printing press - Google Patents
Photosensitive belt track position detecting device of printing press Download PDFInfo
- Publication number
- KR19990005353U KR19990005353U KR2019970018664U KR19970018664U KR19990005353U KR 19990005353 U KR19990005353 U KR 19990005353U KR 2019970018664 U KR2019970018664 U KR 2019970018664U KR 19970018664 U KR19970018664 U KR 19970018664U KR 19990005353 U KR19990005353 U KR 19990005353U
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- South Korea
- Prior art keywords
- photosensitive belt
- recognition pattern
- position detecting
- detecting device
- track position
- Prior art date
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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
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/135—Nozzles
- B41J2/14—Structure thereof only for on-demand ink jet heads
- B41J2/14016—Structure of bubble jet print heads
- B41J2/14161—Structure having belt or drum with holes filled with ink
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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
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/015—Ink jet characterised by the jet generation process
- B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
- B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
- B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
- B41J2/04526—Control methods or devices therefor, e.g. driver circuits, control circuits controlling trajectory
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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
- B41J2/47—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
- B41J2/471—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 using dot sequential main scanning by means of a light deflector, e.g. a rotating polygonal mirror
- B41J2/473—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 using dot sequential main scanning by means of a light deflector, e.g. a rotating polygonal mirror using multiple light beams, wavelengths or colours
Landscapes
- Control Or Security For Electrophotography (AREA)
- Discharging, Photosensitive Material Shape In Electrophotography (AREA)
- Electrostatic Charge, Transfer And Separation In Electrography (AREA)
Abstract
인쇄기의 감광벨트 궤도위치 검출장치를 개시한다. 인쇄기의 감광벨트 궤도위치 검출장치는 적어도 2개의 롤러에 의해 순환운동하는 것으로 그 몸체 일측에 이음부분이 형성된 감광벨트와 상기 감광벨트상에 광을 주사하는 광주사유니트, 현상기, 전사장치 및 상기 광주사유니트, 상기 전사장치 및 상기 현상기의 구동을 제어하는 시스템 제어부를 구비하는 인쇄기에 적용되는 것으로서, 소정위치에서 상기 감광벨트상에 설정된 기준점의 통과를 식별할 수 있도록 상기 이음부분에 소정의 모양으로 형성된 인식패턴;과 전진되는 상기 감광벨트상의 상기 인식패턴을 소정의 위치에서 식별하여 그에 대응하는 전기적 신호를 출력하는 인식패턴 식별센서;를 구비한다. 이러한 인쇄기의 감광벨트 궤도위치 검출장치에 의하면 대량제조되는 감광벨트상의 이음부분내에만 인식패턴이 형성되게 되면 이음부분을 사용하지 않도록 하기 위한 이음부분의 궤도추적제어에 대한 제어오류가 감소된다.Disclosed is a photosensitive belt track position detecting device of a printing press. The photosensitive belt track position detecting device of the printing machine is circulated by at least two rollers, and a photosensitive belt having a joint portion formed on one side of the body, and a photosensitive unit for scanning light on the photosensitive belt, a developing device, a transfer device, and the optical line Applied to a printing machine having a private unit, a system control unit for controlling the driving of the transfer device and the developing device, and having a predetermined shape on the joint portion to identify passage of a reference point set on the photosensitive belt at a predetermined position. And a recognition pattern identification sensor for identifying the recognition pattern on the photosensitive belt to be advanced at a predetermined position and outputting an electrical signal corresponding thereto. According to the photosensitive belt track position detecting device of the printing press, if the recognition pattern is formed only in the joint part on the photosensitive belt manufactured in large quantities, the control error for the track tracking control of the joint part for avoiding the joint part is reduced.
Description
본 고안은 인쇄기의 감광벨트 궤도위치 검출장치에 관한 것으로서, 상세하게는 순환궤도운동하는 감광벨트의 진행경로를 판단하는데 이용할 수 있도록 감광벨트상에 설정된 기준점의 통과를 소정의 위치에서 검출하는 인쇄기의 감광벨트 궤도위치 검출장치에 관한 것이다.The present invention relates to an apparatus for detecting a position of a photosensitive belt of a printing press, and more particularly, to detect a passage of a reference point set on a photosensitive belt at a predetermined position so as to be used to determine a traveling path of a photosensitive belt in a circular orbital motion. A photosensitive belt track position detecting device.
도 1은 일반적인 전자사진방식 인쇄기를 나타내보인 단면도이다.1 is a cross-sectional view showing a general electrophotographic printing press.
도면을 참조하면, 삼각형상으로 배치된 3개의 롤러(11)(12)(13)들에 의해 순환운동하는 감광벨트(14)의 순환궤도 경로상에 순차적으로 리셋장치(15), 컬러별로 마련된 복수개의 광주사유니트(16) 및 현상기(17), 건조장치(18), 전사장치(19)(20)가 배치되어 있다.Referring to the drawings, the reset device 15, which is arranged for each color, is sequentially provided on the circulation trajectory path of the photosensitive belt 14 which is circulated by the three rollers 11, 12 and 13 arranged in a triangle shape. A plurality of optical scanning unit 16, a developing device 17, a drying device 18, and a transfer device 19, 20 are arranged.
인쇄과정을 살펴보면 먼저, 리셋장치(15)를 거쳐 궤도진행되는 감광벨트(14)에 입력된 화상에 대응되는 광을 광주사유니트(16)가 주사한다. 이과정을 통해 감광벨트(14)에는 정전잠상이 형성된다. 정전 잠상이 형성되어 있는 감광벨트(14)에 고체상태의 현상물질인 토너 또는 액체상태의 현상액을 공급하여 화상을 형성시킨 후, 그 감광벨트(14)와 접촉되어 회전하는 전사롤러(19)와 이를 가압하고 있는 가압롤러(20) 사이로 용지(21)를 통과시킴으로써 원하는 화상을 인쇄할 수 있도록 되어있다. 이와 같은 화상인쇄과정은 시스템제어부(미도시)가 순환궤도운동하는 감광벨트(14)의 진행경로를 계속적으로 판단하면서 각 장치들을 적절하게 제어해나감으로써 이루어진다. 감광벨트(14)상에 설정된 기준점의 궤도위치를 판단할 수 있도록 소정의 위치에서 상기 기준점의 통과를 검출하여 시스템제어부에 알려주기 위한 것이 감광벨트 궤도위치 검출장치이다. 도 1에 도시된 인쇄기중 일부를 부분발췌 도시한 도 2를 참조하여 종래의 감광벨트 궤도위치 검출장치를 살펴본다.Looking at the printing process, first, the optical scanning unit 16 scans the light corresponding to the image input to the photosensitive belt 14 orbiting through the reset device (15). Through this process, the electrostatic latent image is formed on the photosensitive belt 14. A transfer roller 19 which rotates in contact with the photosensitive belt 14 by supplying toner or liquid developer in a solid state to a photosensitive belt 14 having a latent electrostatic image formed thereon to form an image; The desired image can be printed by passing the sheet 21 between the pressing rollers 20 which pressurizes it. This image printing process is performed by the system controller (not shown) to properly control each device while continuously determining the progress path of the photosensitive belt 14 in the circular orbital movement. The photosensitive belt track position detecting device is provided for detecting the passage of the reference point at a predetermined position and informing the system controller so that the track position of the reference point set on the photosensitive belt 14 can be determined. A conventional photosensitive belt track position detecting device will be described with reference to FIG. 2, which partially shows a part of the printing machine shown in FIG. 1.
도시된 바와 같이 감광벨트(14)의 화상표시영역(D)을 벗어난 위치상에 감광벨트(14)와 다른 반사율을 갖는 인식패턴(25)이 형성되어 있다. 그리고, 광원(26)과 인식패턴(25)으로부터 반사된 광을 수광하는 광검출기(27)로 된 하나의 인식패턴 식별센서(28)를 갖는다. 이러한 장치에 의하면 광검출기(27)로부터 시스템제어부에 출력되는 신호로부터 감광벨트(14)의 인식패턴(25)이 궤도중 어느위치에 있는지를 시스템제어부가 판단할 수 있게된다. 한편, 순환궤도를 형성하기 위해 그 양단을 겹쳐 이은 감광벨트(14)에 있어서, 이음부분(14a)에는 단층이 형성되어 있다. 이 단층부분을 갖는 이음부분(14a)에 화상에 대응한 현상물질이 공급된다 하더라도, 기록용지(21)로의 전사는 물론이고 그 제거가 어렵기 때문에, 시스템제어부는 이음부분(14a)이 인쇄를 위한 영역으로 사용되지 않도록 각 장치의 구동을 제어한다.As shown, a recognition pattern 25 having a reflectance different from that of the photosensitive belt 14 is formed on a position outside the image display area D of the photosensitive belt 14. And it has one recognition pattern identification sensor 28 which consists of the light detector 27 which receives the light reflected from the light source 26 and the recognition pattern 25. According to such an apparatus, the system controller can determine which position of the track the recognition pattern 25 of the photosensitive belt 14 is from the signal output from the photodetector 27 to the system controller. On the other hand, in the photosensitive belt 14 which overlaps the both ends in order to form a circulation orbit, a single layer is formed in the joint part 14a. Even if a developing material corresponding to an image is supplied to the joint portion 14a having this tomographic portion, not only the transfer to the recording paper 21 but also its removal is difficult, so that the system control unit stops printing of the joint portion 14a. Control the driving of each device so that it is not used as an area for it.
이와 같은 종래의 장치에서는 감광벨트(14)상에 형성시킨 인식패턴(25)이 이음부분(14a)으로부터 설정된 이격러리(r)만큼 떨어진 위치에 형성되어 있어 시스템 제어부에는 이음부분(14a)과 인식패턴(25)과의 이격거리(r) 또는 그에대응하는 정보가 미리 저장되어있다. 따라서 시스템제어부는 광검출기(27)로부터 출력된 신호로부터 감광벨트(14)의 궤도상에서의 이음부분(14a)의 위치를 추정하여 연속적인 궤도진행시 이음부분(14a)이 화성정보의 현상에 이용되지 않도록 제어한다. 그러나, 대량으로 제조시 각 감광벨트(14)의 이음부분(14a)과 인식패턴(25)의 이격거리(r)의 일정한 유지가 어려워 시스템제어부에 기억시킨 이격거리(r)에 대한 제조오차에 의해 시스템제어부의 실질적인 이음부분(14a)의 위치판정 오류를 야기시켜 이음부분(14a)이 인쇄영역으로 이용될 수 있는 문제점을 안고 있다.In such a conventional apparatus, the recognition pattern 25 formed on the photosensitive belt 14 is formed at a position spaced apart from the joint portion 14a by the set interval r, so that the system control unit recognizes the joint portion 14a. The separation distance r with the pattern 25 or information corresponding thereto is stored in advance. Therefore, the system controller estimates the position of the joint portion 14a on the track of the photosensitive belt 14 from the signal output from the photodetector 27 and uses the joint portion 14a for the development of the Mars information during continuous trajectory progression. Control not to. However, when manufacturing in large quantities, it is difficult to maintain a constant distance r of the joint 14a of each photosensitive belt 14 and the recognition pattern 25, and thus the manufacturing error of the separation distance r stored in the system control unit is difficult. This causes a problem in the determination of the actual joint portion 14a of the system control unit, which causes the joint portion 14a to be used as a print area.
본 고안은 상기와 같은 문제점을 개선하기 위해서 창안된 것으로서, 감광벨트상에 형성된 인식패턴의 식별을 통해 궤도상에서의 실질적인 이음매의 위치판단오류를 저감할 수 있도록 하는 인쇄기의 감광벨트 궤도위치 검출장치를 제공하는데 그 목적이 있다.The present invention was devised to solve the above problems, and has a photosensitive belt track position detecting device of a printing press which can reduce the actual position determination error of the joint on the track by identifying the recognition pattern formed on the photosensitive belt. The purpose is to provide.
도 1은 종래의 전자사진방식 인쇄기를 나타내보인 단면도이고,1 is a cross-sectional view showing a conventional electrophotographic printing press,
도 2는 도 1의 인쇄기의 부분발췌 사시도이고,2 is a partial excerpt perspective view of the printing press of FIG.
도 3은 본 고안에 따른 전자사진방식 인쇄기의 감광벨트 궤도위치 검출장치를 나타내보인 사시도이다.Figure 3 is a perspective view showing a photosensitive belt track position detecting apparatus of an electrophotographic printing press according to the present invention.
도면의 주요부분에 대한 부호의 설명Explanation of symbols for main parts of the drawings
11, 12, 13, 31, 32, 33: 롤러 14, 34: 감광벨트11, 12, 13, 31, 32, 33: roller 14, 34: photosensitive belt
15: 리셋장치 16: 광주사유니트15: Reset device 16: Gwangju company unit
17: 현상기 18: 건조장치17: developing unit 18: drying apparatus
19: 전사롤러 20: 가압롤러19: transfer roller 20: pressure roller
21: 용지 25, 35: 인식패턴21: Paper 25, 35: Recognition pattern
26, 36: 광원 27, 37: 광검출기26, 36: light source 27, 37: photodetector
28, 38: 인식패턴 식별센서28, 38: recognition pattern identification sensor
상기의 목적을 달성하기 위하여 본 고안에 따른 인쇄기의 감광벨트 궤도위치 검출장치는 적어도 2개의 롤러에 의해 순환운동하는 것으로 그 몸체 일측에 이음부분이 형성된 감광벨트와 상기 감광벨트상에 광을 주사하는 광주사유니트, 현상기, 전사장치 및 상기 광주사유니트, 상기 전사장치 및 상기 현상기의 구동을 제어하는 시스템 제어부를 구비하는 인쇄기에 적용되는 것으로서, 소정위치에서 상기 감광벨트상에 설정된 기준점의 통과를 식별하여 상기 시스템제어부에 알려주기 위한 전자사진방식 인쇄기의 감광벨트 궤도위치 검출장치에 있어서, 상기 이음부분에 소정의 모양으로 형성된 인식패턴;과 전진되는 상기 감광벨트상의 상기 인식패턴을 소정의 위치에서 식별하여 그에 대응하는 전기적 신호를 출력하는 인식패턴 식별센서;를 구비하는 것을 그 특징으로 한다. 바람직하게는 상기 인식패턴 식별센서는 상기 인식패턴의 진행경로상에 광을 조사하는 광원과; 상기 인식패턴에서 반사된 광을 수광할 수 있도록 배치된 광검출기;를 구비하고, 상기 인색패턴은 상기 감광벨트와 다른 반사율을 갖는 물질로 형성한다.In order to achieve the above object, the photosensitive belt track position detecting device of the printing machine according to the present invention is circulated by at least two rollers to scan light on the photosensitive belt and a photosensitive belt having a joint portion formed on one side of the body. Applied to a printing machine having a light source unit, a developing unit, a transfer unit and a system control unit for controlling the operation of the light source unit, the transfer unit and the developing unit, identifying a passage of a reference point set on the photosensitive belt at a predetermined position. A photosensitive belt track position detecting apparatus of an electrophotographic printing press for informing the system control unit, the apparatus comprising: a recognition pattern formed in a predetermined shape on the joint portion; and the recognition pattern on the photosensitive belt being advanced at a predetermined position. And a recognition pattern identification sensor for outputting an electrical signal corresponding thereto. And that with its features. Preferably, the recognition pattern identification sensor and a light source for irradiating light on the progress path of the recognition pattern; And a photodetector arranged to receive light reflected from the recognition pattern, wherein the color pattern is formed of a material having a reflectance different from that of the photosensitive belt.
이하 첨부된 도면을 참조하여 본 고안에 따른 전자사진방식 인쇄기의 감광벨트 궤도위치 검출장치를 보다 상세하게 설명한다.Hereinafter, a photosensitive belt track position detecting device of an electrophotographic printing press according to the present invention will be described in detail with reference to the accompanying drawings.
도 3은 본 고안에 따른 전자사진방식 인쇄기의 감광벨트 궤도위치 검출장치를 나타내보인 사시도이다.Figure 3 is a perspective view showing a photosensitive belt track position detecting apparatus of an electrophotographic printing press according to the present invention.
도면을 참조하면, 삼각형상으로 배치된 3개의 롤러(31)(32)(33)에 의해 원형궤도를 형성하고 있는 감광벨트(34)의 그 양단을 겹쳐 이은 이음부분(34a)에 감광벨트(34)와 다른 반사율을 갖는 인식패턴(35)이 형성되어 있다. 그리고 인식패턴 식별센서(38)가 감광벨트(34)의 궤도를 따라 이동하는 인식패턴(35)의 도착을 감지할 수 있도록 마련되어 있다. 인식패턴 식별센서(38)는 광원(36)과 인식패턴(35)으로부터 반사된 광을 수광하는 광검출기(37)를 갖는다.Referring to the drawings, the photosensitive belt (3) is formed on a joint portion 34a formed by overlapping both ends of the photosensitive belt 34 forming a circular orbit by three rollers 31, 32 and 33 arranged in a triangular shape. A recognition pattern 35 having a reflectance different from that of 34 is formed. In addition, the recognition pattern identification sensor 38 is provided to detect the arrival of the recognition pattern 35 moving along the trajectory of the photosensitive belt 34. The recognition pattern identification sensor 38 has a light detector 37 for receiving the light reflected from the light source 36 and the recognition pattern 35.
이러한 감광벨트 궤도위치 검출장치는 감광벨트(34)가 3개의 롤러(31)(32)(33)에 의해 가이드 되어 삼각형상의 궤도를 순환운동할 때, 광원(36)에서 출사된 광이 인식패턴(35)의 해당위치 도착에 의해 반사된 광이 광검출기(37)에 수광될 경우, 광검출기(37)로부터의 출력신호에 의해 시스템제어부가 인식할 수 있도록 되어 있다. 따라서, 광검출기(37)로부터 입력되는 신호로부터 시스템제어부의 이음부분(34a) 진행위치 판단에 대한 오류 발생소지가 거의 없게 된다. 결과적으로 대량생산시 이음부분(34a) 내에만 인식패턴(35)을 형성하게되면 이음부분(34a)내에서의 상대적인 위치이동에 따른 오차에 관계없이 시스템제어부는 이음부분(34a)이 인쇄를 위한 영역으로 사용되지 않도록 제어할 수 있게된다.In the photosensitive belt track position detecting device, when the photosensitive belt 34 is guided by three rollers 31, 32 and 33 to circulate the triangular track, the light emitted from the light source 36 is recognized. When the light reflected by the arrival of the corresponding position of (35) is received by the photodetector 37, the system control unit can recognize the output signal from the photodetector 37. Therefore, there is almost no error occurrence in determining the position of the joint 34a of the system controller from the signal input from the photodetector 37. As a result, if the recognition pattern 35 is formed only in the joint part 34a during mass production, the system control unit may print the joint part 34a for printing regardless of the error caused by the relative position movement in the joint part 34a. It can be controlled to not be used as an area.
지금까지 설명된 바와 같이 본 고안에 따른 전자사진방식 인쇄기의 감광벨트 궤도위치 검출장치가 제공됨으로써, 대량제조되는 감광벨트상의 이음부분내에만 인식패턴이 형성되게 되면 이음부분을 사용하지 않도록 하기 위한 전진되는 감광벨트상의 이음부분의 궤도추적 판단에 대한 오류를 예방할 수 있다.As described above, by providing the photosensitive belt track position detecting device of the electrophotographic printing press according to the present invention, if the recognition pattern is formed only in the joint portion on the photosensitive belt to be mass-produced, it is advancing not to use the joint portion. It is possible to prevent errors in the track tracking judgment of the joints on the photosensitive belt.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019970018664U KR200151064Y1 (en) | 1997-07-15 | 1997-07-15 | Position detecting apparatus for photosensitive belt in printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019970018664U KR200151064Y1 (en) | 1997-07-15 | 1997-07-15 | Position detecting apparatus for photosensitive belt in printer |
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| Publication Number | Publication Date |
|---|---|
| KR19990005353U true KR19990005353U (en) | 1999-02-18 |
| KR200151064Y1 KR200151064Y1 (en) | 1999-07-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019970018664U KR200151064Y1 (en) | 1997-07-15 | 1997-07-15 | Position detecting apparatus for photosensitive belt in printer |
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| Country | Link |
|---|---|
| KR (1) | KR200151064Y1 (en) |
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1997
- 1997-07-15 KR KR2019970018664U patent/KR200151064Y1/en not_active IP Right Cessation
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| KR200151064Y1 (en) | 1999-07-15 |
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