KR100234426B1 - White line revision device of inkjet printer - Google Patents

White line revision device of inkjet printer Download PDF

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Publication number
KR100234426B1
KR100234426B1 KR1019970070909A KR19970070909A KR100234426B1 KR 100234426 B1 KR100234426 B1 KR 100234426B1 KR 1019970070909 A KR1019970070909 A KR 1019970070909A KR 19970070909 A KR19970070909 A KR 19970070909A KR 100234426 B1 KR100234426 B1 KR 100234426B1
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South Korea
Prior art keywords
feed roller
paper
inkjet printer
roller
discharged
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KR1019970070909A
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Korean (ko)
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KR19990051558A (en
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정상원
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윤종용
삼성전자주식회사
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Priority to KR1019970070909A priority Critical patent/KR100234426B1/en
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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
    • B41J13/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in short lengths, e.g. sheets
    • B41J13/10—Sheet holders, retainers, movable guides, or stationary guides
    • B41J13/103—Sheet holders, retainers, movable guides, or stationary guides for the sheet feeding section
    • 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
    • B41J13/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in short lengths, e.g. sheets
    • B41J13/0009—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in short lengths, e.g. sheets control of the transport of the copy material
    • B41J13/0018—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in short lengths, e.g. sheets control of the transport of the copy material in the sheet input section of automatic paper handling systems
    • 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
    • B41J13/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in short lengths, e.g. sheets
    • B41J13/02—Rollers
    • B41J13/03—Rollers driven, e.g. feed rollers separate from platen
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00—Separating articles from piles
    • B65H3/02—Separating articles from piles using friction forces between articles and separator
    • B65H3/06—Rollers or like rotary separators

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Ink Jet (AREA)

Abstract

본 발명은 용지를 급지하여 피드롤러와 배지롤러에 의하여 용지가 배출되다가 용지 후단이 피드롤러를 빠져나와 배지롤러에 의해서만 급지되어 배지되고, 용지 후단이 피드롤러를 빠져 나올 경우 피드롤러의 역회전에 의한 흰선을 보정하는 잉크젯프린터의 흰선 보정장치에 관한 것으로, 이를 위해 피드롤러의 축 일단부에 한쌍의 걸림부를 가진 댐핑스프링을 설치하고, 잉크젯프린터의 본체 하측면에 차단벽을 설치하며, 피드롤러에 "F≥μf"의 결속하는 힘을 가한다.According to the present invention, the paper is discharged by the feed roller and the discharge roller, and the rear end of the paper exits the feed roller and is fed only by the discharge roller, and is discharged. A white line correction device of an inkjet printer for correcting white lines caused by the inkjet printer. To this end, a damping spring having a pair of engaging portions is installed at one end of a shaft of a feed roller, and a blocking wall is provided at a lower side of the main body of the inkjet printer, and a feed roller is provided. Apply a binding force of "F≥μf".

따라서 잉크젯프린터용 잉크헤드의 추세가 싱글하이트에서 더블하이트(노즐면의 길이가 용지 피딩 방향으로 길어짐)로 발전되고 있으며, 하부 여백=0(zero) 화가 되어가고 있고, 용지 후단이 피드롤러를 빠져 나온 후에도 인자를 해야 되므로 고품질의 인자 화상을 얻을 수 있는 효과가 있다.Therefore, the trend of ink head for inkjet printer is developing from single height to double height (the length of nozzle surface becomes longer in the direction of paper feeding), lower margin is zero (zero), and the rear end of paper is pulled out of feed roller. Since it is necessary to print even after it has come out, there is an effect of obtaining a high quality print image.

Description

잉크젯프린터의 흰선 보정장치White line correction device of inkjet printer

본 발명은 잉크젯프린터에 관한 것으로, 더욱 상세하게는 용지를 급지하여 피드롤러와 배지롤러에 의하여 용지가 배출되다가 용지 후단이 피드롤러를 빠져나와 배지롤러에 의해서만 급지되어 배지되고, 용지 후단이 피드롤러를 빠져 나올 경우 피드롤러의 백래쉬에 의한 흰선을 보정하는 잉크젯프린터의 흰선 보정장치에 관한 것이다.The present invention relates to an inkjet printer, and more particularly, the paper is fed and the paper is discharged by the feed roller and the discharge roller, and the rear end of the paper exits the feed roller and is fed and discharged only by the discharge roller, and the rear end of the paper is the feed roller. When the out of the present invention relates to a white line correction device of an inkjet printer for correcting the white line by the backlash of the feed roller.

일반적으로 잉크젯프린터는 컴퓨터의 전기적인 신호를 전송받아 컴퓨터 모니터 상에 있는 내용(자료)을 용지 등에 출력하여 인쇄하는 장치로써, 잉크헤드가 한 개 내지 두 개 장착된다.In general, an inkjet printer is a device that receives an electrical signal from a computer and outputs the contents (material) on a computer monitor to a paper or the like and has one or two ink heads mounted thereon.

첨부된 예시도면 도 1은 잉크젯프린터의 인쇄과정을 도시한 것으로, 자동급지부(21)에 수납 적재된 용지(26)는 컴퓨터의 인쇄명령을 받은 픽업롤러(27)의 회전으로 낱장으로 급지되어 이송장치부(30)의 프릭션롤러(32)와 피드롤러(31) 사이로 공급되고, 피드롤러(31)의 정속 구동에 의해 용지(26)는 급지되며, 캐리지(41)가 좌우로 이동하면서 용지(26) 위에 인쇄를 하게 된다.1 is a view illustrating a printing process of an inkjet printer, wherein the sheet 26 stored and stored in the automatic sheet feeding unit 21 is fed and conveyed in a sheet by the rotation of the pickup roller 27 that has received a printing command from a computer. It is supplied between the friction roller 32 and the feed roller 31 of the apparatus unit 30, and the paper 26 is fed by the constant speed drive of the feed roller 31, and the paper 41 moves to the left and right. (26) It will be printed on.

여기서 피드롤러(31)의 구동은 모터와 연속기어부에 의해서 정속 구동되고, 용지 급지의 흐름은 첫째 픽업롤러(27)에 의해 픽업, 둘째 피드롤러(31)에 의해서만 피딩, 셋째 피드롤러(31)와 배지롤러(51)에 의해서 피딩, 넷째 배지롤러(51)에 의해서만 피딩되는 4단계로 구분된다.Here, the drive of the feed roller 31 is driven at a constant speed by the motor and the continuous gear portion, the flow of paper feeding is picked up by the first pickup roller 27, only by the second feed roller 31, and the third feed roller 31. And the feeding by the discharge roller 51, the fourth discharge roller is divided into four stages fed only by.

이와같이 이송된 용지는 안내프레임(53) 위를 통과하여 용지 배출 장치부(50)에 도달 되면 배지롤러(51)와 원고 접촉 휠(52) 사이로 이송되면서 잉크젯프린터 외부로 배출되는 구조로 이루어져 있다.The paper conveyed in this way has a structure that is discharged to the outside of the inkjet printer while being transferred between the discharge roller 51 and the document contact wheel 52 when passing through the guide frame 53 to reach the paper discharge device unit 50.

한편 구동롤러(33)는 배지롤러(51)와 피드롤러(31) 사이에 맞물려 설치된 상태에서 피드롤러(31)가 회전되면 이 동력을 구동롤러(33)가 전달받아 배지롤러(51)에 전달시키므로서 배지롤러(51)가 회전되는 것이다.On the other hand, when the feed roller 31 is rotated in a state in which the driving roller 33 is engaged between the discharge roller 51 and the feed roller 31, the driving roller 33 receives the power and transfers it to the discharge roller 51. By doing so, the discharge roller 51 is rotated.

용지급지 장치부(20)는 용지(26)를 수납하는 자동급지부(21)와 자동급지부(21)에 수납 적재된 용지(26)를 한 장씩 빼내어서 이송장치부(30)로 급송하는 픽업롤러(27)로 구성되어 있고, 자동급지부(21)는 메인프레임(22)과 용지(26)를 한 곳으로 모아 가지런히 수납하는 녹업플레이트(23)로 구성되어 있으며, 메인프레임(22)의 상단과 녹업플레이트(23)의 하단 사이에는 녹업스프링(24)이 장착되어 있다.The paper feeder unit 20 picks up the automatic feeder 21 for accommodating the paper 26 and the pick-up roller for removing the sheet of paper 26 stored in the automatic feeder 21 one by one and feeding it to the feeder unit 30. It is composed of 27, the automatic sheet feeder 21 is composed of a knock-up plate 23 for storing the main frame 22 and the paper 26 in one place, and arranged neatly, the upper end of the main frame 22 Between the lower end of the knock-up plate 23 and the knock-up spring 24 is mounted.

한편, 캐리지(41)의 후면측에 벨트걸이부(44)가 형성되고, 벨트걸이부(44)에 타이밍벨트(43)의 일측이 체결되어 있어서 타이밍벨트(43)가 움직이면 캐리지(41)가 따라서 움직이고, 캐리지(41)에 장착된 잉크헤드(42)의 하단에는 잉크를 용지에 분사시키는 노즐부(45)가 형성되어 있다.On the other hand, the belt hanger 44 is formed on the rear side of the carriage 41, and one side of the timing belt 43 is fastened to the belt hanger 44 so that the carriage 41 moves when the timing belt 43 moves. Therefore, the nozzle part 45 which moves, and injects ink to paper is formed in the lower end of the ink head 42 attached to the carriage 41. As shown in FIG.

그리고 장착용틀(11)은 케이스(10)의 내부에 설치되어 있고, 잉크젯프린터의 앞에는 덮개(12)가 장착되어 케이스(10)와 접하도록 되어 있다.The mounting frame 11 is provided inside the case 10, and a lid 12 is mounted in front of the inkjet printer to contact the case 10.

한편, 용지급지 장치부(20)에 수납되는 용지는 제지회사에서 물품으로 제조할 때 수십매가 포장되어 있어서, 용지끼리 마찰되어 정전기가 발생되면서 용지가 한 장씩 쉽게 분리되지 않기 때문에 용지를 수납하기 전에 미리 사용자가 용지에 바람을 불어 넣거나 손으로 용지를 각장씩 넘겨 분리하였다.On the other hand, the paper accommodated in the paper feeder unit 20 is packed with dozens of paper when manufactured by the paper company, before the paper is stored because the paper is rubbed with each other and the paper is not easily separated one by one The user blows the paper in advance or turns the sheets by hand to separate them.

그리고 용지를 낱장씩 분리하여 여러장의 용지가 한 번에 급지되는 것을 방지 하기 위해 핑거(25)가 녹업플레이트(23)의 하단에 설치되어 용지를 잡아준다.And to separate the sheet by sheet to prevent the multiple sheets of paper from being fed at once the finger 25 is installed at the bottom of the knock-up plate 23 to hold the paper.

피드롤러(31)에 의해서 배출될 경우에는 정속 구동되는데 문제가 없으나 예시도면 도 2b에서 보는 바와 같이 용지(26) 후단이 피드롤러(31)와 프릭션롤러(32)를빠져 나오는 순간 과잉 배출에 의해 용지(26)에 흰선이 발생한다.When discharged by the feed roller 31, there is no problem to drive at constant speed, but as illustrated in FIG. 2B, the rear end of the paper 26 exits the feed roller 31 and the friction roller 32 to the excess discharge. As a result, white lines are generated in the sheet 26.

여기서 흰선은 도2a와 같이 용지(26)가 피드롤러(31)와 배지롤러 또는 피드롤러(31)만에 의해서 배출될 경우에는 피드롤러(31)가 구동하여 "a"만큼 회전되면 용지(26)도 "a"만큼 배출된다.Here, the white line indicates that when the paper 26 is discharged only by the feed roller 31 and the discharge roller or the feed roller 31 as shown in FIG. 2A, when the feed roller 31 is driven and rotated by " a " ) Is also discharged by "a".

그런데 도2b에서와 같이 용지(26) 후단이 피드롤러(31)와 프릭션롤러(32)를 빠져 나오는 순간에는 피드롤러(31)와 배지롤러에 의해 "a"만큼 회전되면 용지(26)는 "a+α=L" 만큼 배출되어 "α" 만큼 과잉 배지되어 화상에서는 예시도면 도3에서 보는바와같이,"α" 만큼의 흰선이 발생된다.However, at the moment when the rear end of the paper 26 exits the feed roller 31 and the friction roller 32 as shown in FIG. 2B, the paper 26 is rotated by "a" by the feed roller 31 and the discharge roller. By being discharged by " a + α = L " and excessively discharged by " [alpha] ", as shown in FIG.

상기 "α" 만큼의 흰선이 발생되는 이유는 피드롤러가 연속기어부에 의해 구동되므로 기본적으로 역회전을 가지고 있고, 용지 후단이 피드롤러를 바져 나오는 순간에 용지의 두께(피드롤러와 프릭션롤러의 형상이 원통형이므로)와 프릭션롤러의 압력 "f"에 의해서 "α"만큼 과잉 배출되는 것이다.The reason why the "α" white line is generated is because the feed roller is driven by the continuous gear part, so it basically has a reverse rotation, and the thickness of the paper (the feed roller and the friction roller) It is discharged as much as "α" by the cylindrical shape) and the friction roller pressure "f".

이때 α는 용지의 두께에 의해 결정되는 것으로, 용지 두께가 두꺼울수록 α값은 커지게 되고, 용지 두께가 얇을수록 α값은 작아진다.At this time, α is determined by the thickness of the paper. The larger the paper thickness, the larger the α value, and the thinner the paper thickness, the smaller the α value.

그리고 피드롤러의 역회전에 의해서 "α"만큼의 과잉 배출에 의한 흰선이 발생하므로 용지 후단이 피드롤러를 빠져나가는 순간에도 "α"만큼 과잉 피딩되지 않도록 피드롤러에 붙잡아주는 힘을 가하면 된다.In addition, since white lines are generated by excessive discharge of "α" due to reverse rotation of the feed roller, a force that holds the feed roller so as not to overfeed as much as "α" may be applied even when the rear end of the paper exits the feed roller.

왜냐하면 피드롤러의 역회전을 "0"으로 해줄수는 없기 때문이다.Because it is not possible to reverse the feed roller to zero.

흰선 불량을 없애주면 용지 후단까지 안정된 화상을 얻을 수 있으므로 잉크젯프린터의 하부 여백을 "0"으로 할 수 있게 된다.If the white line defect is eliminated, a stable image can be obtained up to the rear end of the paper, so that the lower margin of the inkjet printer can be set to "0".

여기서 하부 여백 "0"은 피드롤러를 빠져나온 용지 후단까지 화상을 인자하고 안정된 화상을 얻는 것이다.The lower margin " 0 " here prints the image up to the rear end of the paper exiting the feed roller and obtains a stable image.

따라서 본 발명은 상술한 문제점을 해결하고자 하는 것으로, 용지를 급지하여 피드롤러와 배지롤러에 의하여 용지가 배출되다가 용지 후단이 피드롤러를 빠져나와 배지롤러에 의해서만 급지되어 배지되고, 용지 후단이 피드롤러를 빠져 나올 경우 피드롤러의 역회전에 의한 흰선을 보정하는 잉크젯프린터의 흰선 보정장치에 관한 것이다.Therefore, the present invention is to solve the above problems, the paper is fed by the feed roller and the discharge roller while the paper is discharged by the feed roller and the rear end of the feed roller is fed only by the discharge roller is discharged, the rear end of the feed roller It is related to the white line correction device of the inkjet printer to correct the white line by the reverse rotation of the feed roller when exiting.

이러한 목적을 달성하기 위한 본 발명은 피드롤러의 축부에 양측 팔을 가진 댐핑스프링과 스토퍼를 설치하고, 피드롤러에 "F≥μf" 인 붙잡기 힘을 가하는 것을특징으로 한다.The present invention for achieving this object is characterized in that the damping spring and the stopper having both arms on the shaft of the feed roller is installed, and applying a holding force of "F≥μf" to the feed roller.

도 1은 종래 잉크젯프린터의 인쇄과정을 보인 우측면도1 is a right side view showing a printing process of a conventional inkjet printer

도 2a는 도1의 프릭션롤러와 피드롤러 사이에 용지가 끼인 상태의 단면도Figure 2a is a cross-sectional view of the paper sandwiched between the friction roller and the feed roller of Figure 1

도 2b는 도2a의 용지가 빠져나가는 순간을 보인 단면도FIG. 2B is a cross-sectional view of the paper exit of FIG. 2A

도 3a는 종래 잉크젯프린터에 의해 용지에 인쇄되는 인자 범위를 보인 개요도Figure 3a is a schematic diagram showing the printing range printed on the sheet by a conventional inkjet printer

도 3b는 도3a의 확대 상세도FIG. 3B is an enlarged detailed view of FIG. 3A

도 4는 본 발명에 따른 피드롤러 축에 댐핑스프링이 체결된 상태의 단면도Figure 4 is a cross-sectional view of the damping spring is fastened to the feed roller shaft in accordance with the present invention

도 5는 본 발명에 따른 피드롤러 및 댐핑스프링의 사시도Figure 5 is a perspective view of the feed roller and the damping spring according to the present invention

도 6은 본 발명에 따른 피드롤러 축에 댐핑스프링이 체결된 상태에서의 작동상태도 이다.6 is an operating state diagram in a state where the damping spring is fastened to the feed roller shaft according to the present invention.

*도면의 주요부분에 대한 부호 설명* Explanation of symbols on main parts of the drawings

310 ; 피드롤러 311 ; 피드롤러 축310; Feed rollers 311; Feed roller shaft

312 ; 댐핑스프링 313, 313' ; 걸림부312; Damping spring 313, 313 '; Hang

314 ; 차단벽 315 ; 본체 하측부314; Barrier wall 315; Lower body

이하 본 발명의 구성 및 작용을 첨부된 도면을 참조로하여 상세히 설명하면 다음과 같다.Hereinafter, the configuration and operation of the present invention will be described in detail with reference to the accompanying drawings.

예시도면 도 4에 보는바와 같이, 피드롤러(310)의 피드롤러축(311)에 댐핑스프링(312)을 장착하고, 본체하측부(315)에 차단벽(314)을 수직으로 세워 형성하여 댐핑스프링(312)의 양쪽 걸림부(313)(313') 사이에 상기 차단벽(314)이 위치하도록 한다.As illustrated in FIG. 4, a damping spring 312 is mounted on a feed roller shaft 311 of a feed roller 310, and a damping wall 314 is vertically formed on a lower portion of the main body 315. The blocking wall 314 is positioned between both engaging portions 313 and 313 ′ of the spring 312.

여기서 댐핑스프링(312)의 감김 방향은 피드롤러(310)의 회전 방향과 동일하게 한다.Here, the winding direction of the damping spring 312 is the same as the rotation direction of the feed roller 310.

그리고 피드롤러(310)에 작용하는 프릭션롤러의 압력 "f"는 피드롤러(310)의 정속 구동 "a"에 따라 용지가 "a"만큼 배출할 수 있는 최소 힘으로 설정하고, 프릭션롤러의 외경은 최소 Φ로 설정한다.And the pressure "f" of the friction roller acting on the feed roller 310 is set to the minimum force that the paper can be discharged by "a" in accordance with the constant speed drive "a" of the feed roller 310, the friction roller The outer diameter of is set to minimum Φ.

이러한 구성은 과잉 배출량인 "α"를 최소 혹은 "0"으로 할 수 있는 조건이 된다.Such a configuration becomes a condition that allows the minimum amount of "α", which is the excess amount of discharge, to be "0".

본 발명의 동작은 도4에서와 같이 피드롤러(310)의 회전에 댐핑스프링(312)의 일측 걸림부(313)는 차단벽(314)과 접촉하여 멈추게 되고, 피드롤러(310)에 일정한 압력 F를 가해 주며, F 〉μf (μ는 피드롤러의 마찰계수)의 조건으로 설정한다.In the operation of the present invention, as shown in FIG. 4, one side locking portion 313 of the damping spring 312 stops in contact with the blocking wall 314 when the feed roller 310 is rotated, and a constant pressure is applied to the feed roller 310. Add F and set it under the condition of F> μf (μ is the coefficient of friction of the feed roller).

용지 후단이 피드롤러(310)를 빠져 나가는 순간에 피드롤러(310)의 역회전은 있지만 μf 보다 큰 붙잡기 힘 "F"가 피드롤러(310)에 가해지고 있기 때문에 과잉 피딩 "a"=0이 된다.At the moment the paper trailing edge exits the feed roller 310, there is a reverse rotation of the feed roller 310, but the excessive feed " a " = 0 is applied because the holding force " F " do.

여기서 댐핑스프링(312)의 걸림부(313)(313')가 2개인 이유는 잉크젯프린터에 따라 피드롤러(310)의 역회전이 필요한 경우가 있으므로 역회전이 가능하도록 한 것이다.The reason for the two locking portions 313 and 313 'of the damping spring 312 is that the reverse rotation of the feed roller 310 may be required depending on the inkjet printer.

댐핑스프링(312) 및 차단벽(314)은 예시도면 도 5와 같이 상세하게 나타낼 수 있다.The damping spring 312 and the blocking wall 314 may be shown in detail as shown in FIG. 5.

상기 댐핑스프링(312)은 피드롤러(310)의 끝단부에 형성된 피드롤러 축(311)에 체결되고, 피드롤러 축(311)의 직경은 댐핑스프링(312)의 홀의 직경보다 약간 크게 형성되어 댐핑스프링(312)이 피드롤러 축(311)에 체결된 상태에서 미약한 힘이 작용될 때는 피드롤러 축(311)의 외주면에 댐핑스프링(312)이 밀착되고 계속해서 피드롤러(310)가 회전될 때는 댐핑스프링(312)의 걸림부(313)(313')가 차단벽(314)에 걸려 피드롤러(310)가 더 이상 회전되지 않게 된다.The damping spring 312 is fastened to the feed roller shaft 311 formed at the end of the feed roller 310, the diameter of the feed roller shaft 311 is formed slightly larger than the diameter of the hole of the damping spring 312 damping When a weak force is applied while the spring 312 is fastened to the feed roller shaft 311, the damping spring 312 is in close contact with the outer circumferential surface of the feed roller shaft 311, and the feed roller 310 is continuously rotated. In this case, the catching portions 313 and 313 'of the damping spring 312 are caught by the blocking wall 314 so that the feed roller 310 is no longer rotated.

예시도면 도 6은 용지가 프릭션롤러(32)와 피드롤러(310) 사이에 끼인 상태에서 우측으로 배출되는 상태를 보인 것이다.Exemplary Drawing FIG. 6 shows a state in which the paper is discharged to the right while being sandwiched between the friction roller 32 and the feed roller 310.

피드롤러(310)가 계속 회전하여 용지가 배출될 때는 댐핑스프링(312)이 피드롤러 축(311)에 장착된 상태에서 피드롤러(310)가 회전되고, 이때 걸림부(313')가 차단벽(314)에 접촉되어 걸리게 되며, 용지가 프릭션롤러(32)와 피드롤러 축(311)에서 빠져나가는 순간에 피드롤러(310)는 걸림부(313)(313')가 차단벽(314)에 걸려서 역회전이 일어나지 않게 된다.When the feed roller 310 is continuously rotated and the paper is discharged, the feed roller 310 is rotated while the damping spring 312 is mounted on the feed roller shaft 311, and at this time, the catching portion 313 'is blocked. 314 is caught and caught, the feed roller 310 at the moment the paper exits the friction roller 32 and the feed roller shaft 311, the engaging portion 313 (313 ') of the blocking wall 314 The reverse rotation does not occur because of

이상에서 설명한 바와 같이 본 발명은 용지 후단이 피드롤러와 프릭션롤러 사이를 빠져 나오는 순간 피드롤러의 역회전이 작용하더라도 피드롤러 축에 체결된 댐핑스프링에 의해 상기 역회전이 방지되어 용지에 인쇄하는 인자에 흰선이 발생치 않은 고품질의 인자 화상을 얻을 수 있는 효과가 있다.As described above, in the present invention, the reverse rotation is prevented by the damping spring fastened to the feed roller shaft even if the reverse rotation of the feed roller is activated when the rear end of the paper exits between the feed roller and the friction roller. There is an effect of obtaining a high quality print image in which no white lines occur in the print.

Claims (2)

피드롤러 축에 양쪽의 걸림부를 가진 댐핑스프링이 체결되고, 상기 걸림부 사이에 차단벽이 위치하여 본체 하측부에 형성되며, 용지가 피드롤러를 빠져나가는 순간에 댐핑스프링의 걸림부가 차단벽에 걸리면서 피드롤러의 역회전이 방지되는 잉크젯프린터의 흰선 보정장치.Damping springs having both locking portions are fastened to the feed roller shaft, and a blocking wall is positioned between the locking portions to form a lower portion of the main body, and the stopping portion of the damping spring is caught by the blocking wall at the moment the paper exits the feed roller. White line correction device for inkjet printers to prevent reverse rotation of the feed roller. 제 1 항에 있어서,The method of claim 1, 상기 피드롤러 축의 직경은 댐핑스프링의 직경보다 약간 크게 형성되어 피드롤러 축에 댐핑스프링이 체결된 상태에서 피드롤러가 회전되어 용지를 배출할 때는 원활하게 배지되고, 용지가 빠져 나가는 순간에는 피드롤러가 더디게 회전되는 것을 특징으로 한 잉크젯프린터의 흰선 보정장치.The diameter of the feed roller shaft is slightly larger than the diameter of the damping spring so that the feed roller is rotated while the damping spring is fastened to the feed roller shaft, so that the feed roller is smoothly discharged when the paper is discharged. White line correction device of the inkjet printer, characterized in that the slow rotation.
KR1019970070909A 1997-12-19 1997-12-19 White line revision device of inkjet printer KR100234426B1 (en)

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Application Number Priority Date Filing Date Title
KR1019970070909A KR100234426B1 (en) 1997-12-19 1997-12-19 White line revision device of inkjet printer

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Application Number Priority Date Filing Date Title
KR1019970070909A KR100234426B1 (en) 1997-12-19 1997-12-19 White line revision device of inkjet printer

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KR19990051558A KR19990051558A (en) 1999-07-05
KR100234426B1 true KR100234426B1 (en) 1999-12-15

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1315648C (en) * 2003-01-09 2007-05-16 三星电子株式会社 Device and method for correcting white line of ink-jet printer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1315648C (en) * 2003-01-09 2007-05-16 三星电子株式会社 Device and method for correcting white line of ink-jet printer

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