KR100247400B1 - White line compensating method inkjet printer - Google Patents

White line compensating method inkjet printer Download PDF

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Publication number
KR100247400B1
KR100247400B1 KR1019970070911A KR19970070911A KR100247400B1 KR 100247400 B1 KR100247400 B1 KR 100247400B1 KR 1019970070911 A KR1019970070911 A KR 1019970070911A KR 19970070911 A KR19970070911 A KR 19970070911A KR 100247400 B1 KR100247400 B1 KR 100247400B1
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South Korea
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paper
white line
printing
inkjet printer
roller
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KR1019970070911A
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Korean (ko)
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KR19990051560A (en
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정상원
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윤종용
삼성전자주식회사
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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
    • B41J13/0009—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
    • B41J13/0036—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 output 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
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/0095—Detecting means for copy material, e.g. for detecting or sensing presence of copy material or its leading or trailing end
    • 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
    • B41J13/0009—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
    • B41J13/0027—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 printing 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
    • B41J13/0009—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

Abstract

본 발명은 피드로울러를 빠져나가는 용지의 화이트라인 위치를 검출하여 자동으로 화이트라인을 보정하여 고 품질의 화상을 얻기 위한 잉크젯 프린터의 화이트 라인 보정 방법에 관한 것으로, 용지공급부에 적재되어 있는 용지를 픽업하여 용지의 후단이 피드로울러와 프릭션로울러를 빠져나가기 전까지 인쇄를 실행하는 노말 인쇄과정과, 용지가 피드로울러와 프릭션로울러를 빠져나간 후에 발생한 화이트라인을 순차적으로 보상하는 과정으로 구성된 특징이 있다.The present invention relates to a white line correction method of an inkjet printer for detecting a white line position of a paper exiting a feed roller and automatically correcting a white line to obtain a high quality image. This process consists of a normal printing process that executes printing before the rear end of the paper exits the feed roller and the friction roller, and a process of sequentially compensating the white line that occurs after the paper exits the feed roller and the friction roller. .

따라서, 피딩되는 용지의 후단을 감지하여 화이트 라인을 보정함으로서, 바톰 마진(Bottom Marjin)의 최소화에 따라 고 품질의 화상을 얻는 효과를 가진다.Therefore, by detecting the rear end of the paper to be fed and correcting the white line, it is possible to obtain a high quality image according to the minimization of Bottom Marjin.

Description

잉크젯 프린터의 화이트 라인 보정 방법How to calibrate white lines on inkjet printers

본 발명은 잉크젯 프린터의 화이트 라인 보정 방법에 관한 것으로, 더욱 상세하게는, 피드로울러를 빠져나가는 용지의 화이트 라인 위치를 검출하여 자동으로 화이트라인을 보정함으로서 고 품질의 화상을 얻기 위한 잉크젯 프린터의 화이트 라인 보정 방법에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a white line correction method of an inkjet printer, and more particularly, to detect a white line position of a paper exiting a feed roller and automatically correct the white line to obtain a high quality image. It relates to a line correction method.

일반적으로 사무자동화기기는 컴퓨터에서 작성된 데이터나 문자 또는 그래픽을 프린팅을 하기 위한 용지위에 문자의 형태로 출력하여 문서화하기 위한 출력장치인 프린터와, 원고 또는 이미지 형태의 데이터를 그대로 다량의 원고에 형성시키기 위한 기기인 복사기와, 원고를 원거리의 사람에게 필요한 데이터를 바로 볼 수 있도록 전송하기 위한 유용한 기기 팩시밀리(Facsimile)등 많은 기기가 있다.In general, office automation equipment is a printer, which is an output device for printing and documenting data or characters or graphics created on a computer in the form of letters on paper for printing, and forming data in the form of originals or images on a large amount of documents as they are. There are many devices such as copiers, which are intended for use, and facsimile, which are useful devices for transferring the originals so that the data needed by the remote person can be seen immediately.

이와 같은 각종 사무자동화기기중에서 유저(User)에 의해 컴퓨터에서 작성된 데이터나 파일을 문서화하기 위해서는 사용자의 취향에 따라 여러 종류의 각종 프린터를 이용하여 인쇄하고 있다.In order to document data or files created on a computer by a user among such various office automation equipment, various types of printers are printed according to the user's taste.

따라서 본 발명에서는, 헤드 카트리지에 저장된 잉크에 열을 가하면 카트리지 내의 압력이 상승하고 비누 거품처럼 기포(Bubble)가 발생하게 되는데 이때 발생된 기포(Bubble)를 노즐을 통하여 분사시켜 글자를 구성하여 인쇄 용지에 부착시킴으로서 인쇄가 되는 잉크젯 프린터를 예를 들어 설명하기로 한다.Therefore, in the present invention, when heat is applied to the ink stored in the head cartridge, the pressure in the cartridge rises and bubbles are generated like soap bubbles. At this time, the bubbles are sprayed through the nozzle to form letters to form printing paper. An inkjet printer that is printed by attaching to the same will be described as an example.

일반적으로 잉크젯 프린터의 인쇄장치인 헤드카트리지에 장착되는 노즐(Nozzle)의 개수는 64개를 사용하고 있으며, 그림의 해상도는 통상적으로 300∼1200 DPI(Dot Per Inch) 정도이고, 설치하는 헤드카트리지의 종류에 따라서 모노(Mono)나 컬러(Color)로 인쇄를 하게 된다.In general, the number of nozzles mounted on the head cartridge, which is a printing device of an inkjet printer, is used as 64, and the resolution of the picture is generally about 300 to 1200 DPI (Dot Per Inch). Depending on the type, it prints in mono or color.

이러한 잉크젯 프린터(10)의 동작 과정을 도 1을 참조하여 좀더 상세히 설명하면, 용지(P)는 용지 급지 장치부(20)의 녹업플레이트에 적재되고, 용지를 스토킹하기 위한 녹업스프링(21)의 탄력에 의해 용지가 스토킹되면 픽업로울러(22)에 의하여 픽업된 후 낱장으로 이송 장치부(30)로 공급되어 인쇄를 위한 이송을 하게 된다.The operation of the inkjet printer 10 will be described in more detail with reference to FIG. 1. The paper P is loaded on the knock-up plate of the paper feeder unit 20, and the knock-up spring 21 for stalking the paper. When the paper is stalked by the elasticity, the paper is picked up by the pickup roller 22 and then supplied to the transfer device unit 30 in a single sheet to be transported for printing.

이와 같이 픽업로울러에 의해 픽업된 용지가 용지검출센서에 검출되면 피드로울러(31)와 프릭션로울러(32)의 회전하는 압압력에 의해 인쇄 장치부(40)로 이송되게 된다.When the paper picked up by the pickup roller is detected by the paper detection sensor in this way, the feed roller 31 and the friction roller 32 are transferred to the printing device unit 40 by the rotating pressing force.

상기 이송 장치부로부터 용지가 공급되면, 캐리지 구동 모터가 구동을 하게 되고, 상기 캐리지구동모터와 연계되어 구동하는 벨트(44)가 좌, 우로 구동함에 따라, 캐리지메카니즘(41)은 이탈 방지용 가이드 레일(45)에 고정되어 캐리지 샤프트(43)를 따라 좌, 우로 슬라이딩(Sliding)하며 카트리지에 부착된 노즐(42a)을 통해 이송 장치부(30)에서 이송된 용지(P)위에 인쇄가 되도록 한다.When the paper is supplied from the conveying device, the carriage driving motor is driven, and as the belt 44 driven in conjunction with the carriage driving motor is driven left and right, the carriage mechanism 41 is a guide rail for departure prevention. It is fixed to 45 so as to slide left and right along the carriage shaft 43 and to print on the paper (P) conveyed from the transfer device unit 30 through the nozzle 42a attached to the cartridge.

따라서, 상기 헤드 카트리지(42)에 장착된 노즐(42a)에 의해 인쇄된 용지(P) 는 베이스프레임(50) 위에서 용지(P)에 한 줄씩 인쇄되면서 점차적으로 이동하는 상태가 되며 인쇄된 용지(P)가 용지 배출부(60)에 도달하게 되면 배지로울러(61)와 스타-휠(Star-Wheel)(62) 사이를 통과하여 용지(P)가 배지되는 배지 동작이 수행된다.Therefore, the paper P printed by the nozzle 42a mounted on the head cartridge 42 is in a state of gradually moving while being printed line by line on the paper P on the base frame 50, and the printed paper ( When P reaches the paper discharge part 60, a paper discharge operation is performed in which paper P is discharged through the discharge roller 61 and the star-wheel 62.

즉, 잉크젯 프린터의 인쇄 과정은 용지 급지 장치부(20)에 용지가 적재되면 인쇄 명령에 따라 이송 장치부로 이송되고, 인쇄 장치부는 이송장치부로부터 이송된 용지위에 제어된 인쇄 명령에 따라 인쇄가 되면 용지를 배지 장치부를 거쳐 배지되면 일련의 과정이 종료된다.That is, the printing process of the inkjet printer is transferred to the transfer unit according to a print command when paper is loaded in the paper feeder unit 20, and the printing unit unit is printed according to a controlled print command on the paper transferred from the transfer unit unit. When the paper is discharged through the discharge device unit, a series of processes are completed.

이 때, 용지 급지장치부(20)에서 픽업된 용지(P)가 이송장치부로 이송되어 인쇄를 하기 위하여 피딩(Fiding)이 되는 순간 즉, 피드로울러(31)와 프릭션로울러(32) 사이를 빠져나가는 순간 피드로울러(31)의 자체적으로 가지고 있는 백러쉬(Backlash) 현상으로 인해 화이트라인(White Line)이 발생하는 문제점이 있다.At this time, the paper P picked up from the paper feeder unit 20 is transferred to the feeder unit and fed to print, that is, between the feed roller 31 and the friction roller 32. There is a problem that a white line occurs due to a backlash phenomenon that the feed roller 31 has itself.

즉, 도 2를 참조하여 상세히 설명하면, 용지(P)의 후단이 피드로울러(31)와 프릭션로울러(32) 사이를 빠져나가는 순간 피드로울러와 배지로울러에 의해 a 만큼 피딩하면 용지는 a + α = L 만큼 오버-피딩(Over-Feeding)된다.That is, when it is described in detail with reference to Figure 2, when the rear end of the paper (P) is fed between the feed roller 31 and the friction roller 32 and fed by the feed roller and the discharge roller as much as a paper a + Over-feeding by α = L.

따라서, 도 3에서와 같이 한 장의 용지에서는 α 만큼의 화이트라인(White Line)이 발생하게 되어 인쇄 화질에 좋지 않은 문제점을 주고 있다.Therefore, as shown in FIG. 3, one sheet of paper generates white lines as much as α, which is a problem in print quality.

본 발명은 인쇄용지의 후단에 발생하는 화이트 라인(White Line)(a) 위치를 검출하여 별도의 화상 처리 방법으로 화이트라인을 보정하여 고 품질의 화상을 얻기 위한 장치 및 방법을 제공하는데 그 목적이 있다.The present invention provides an apparatus and method for obtaining a high quality image by detecting a white line (a) position occurring at the rear end of printing paper and correcting the white line by a separate image processing method. have.

이와 같은 목적을 구현하기 위하여, 용지공급부에 적재되어 있는 용지를 픽업하여 용지의 후단이 피드로울러와 프릭션로울러를 빠져나가기 전까지 인쇄를 실행하는 노말인쇄과정과, 용지가 피드로울러와 프릭션로울러를 빠져나간 후에 발생한 화이트라인을 순차적으로 보상하는 과정으로 구성된 것을 특징으로 한다.In order to achieve this purpose, the normal printing process of picking up the paper loaded in the paper feeder and executing printing until the rear end of the paper exits the feed roller and the friction roller, and the paper feeds the feed roller and the friction roller It characterized in that it consists of a process of sequentially compensating the white line generated after exiting.

또한, 상기 화이트라인을 순차적으로 보상하는 방법은 용지의 후단이 피드로울러를 이탈하기 직전까지의 거리를 피딩하여 인쇄를 하는 과정과,In addition, the method for compensating the white line sequentially is a process of printing by feeding the distance from the rear end of the paper just before leaving the feed roller, and printing;

용지를 "z" → "y" → "x" → "a" 순서로 피딩하여 인쇄를 하는 과정과,The paper is fed in order of "z" → "y" → "x" → "a"

바톰마진 위치이면 배지하는 과정으로 구성된 또 다른 특징이 있다.If the bottom margin position is another feature consisting of the process of discharging.

도 1은 종래 일반적인 잉크젯 프린터의 동작과정을 나타낸 우측면도이고,1 is a right side view showing an operation process of a conventional general inkjet printer,

도 2는 도 1에 따른 문제점을 나타낸 우측면도이고,Figure 2 is a right side view showing the problem according to FIG.

도 3은 도 2에 따른 인쇄용지를 나타낸 것이고,Figure 3 shows the printing paper according to Figure 2,

도 4는 본 발명에 따른 회로블럭도를 나타낸이고,4 shows a circuit block diagram according to the present invention,

도 5는 본 발명에 따른 화이트라인을 보정하기 위한 상세도를 나타낸 것이고,Figure 5 shows a detailed view for correcting the white line according to the present invention,

도 6은 본 발명을 구현하기 위한 방법을 나타낸 흐름도이다.6 is a flowchart illustrating a method for implementing the present invention.

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

도 4는 본 발명을 구현하기 위한 장치를 나타낸 회로 블록도를 나타낸 것이다.4 shows a circuit block diagram illustrating an apparatus for implementing the present invention.

먼저, 도 4에 도시한 바와 같이 호스트(미도시 됨)로부터 전송되는 인쇄제어신호를 중앙처리장치(100)에서 전송받아 인자 작업에 필요한 제어신호를 발생한다. 중앙처리장치(100)는 제어신호 발생시 필요한 프로그램 내지는 설정 데이터를 ROM(110) 내지 RAM(120)에 리드(Read)하여 발생한다.First, as shown in FIG. 4, a print control signal transmitted from a host (not shown) is received by the central processing unit 100 to generate a control signal necessary for printing. The CPU 100 reads and outputs a program or setting data necessary for generating a control signal to the ROM 110 or the RAM 120.

또한, 중앙처리장치(100)에서 발생된 제어신호는 LF 모터 드라이브(150) 및 LF 모터(151)로 전송되어 인쇄용지(P)를 인쇄 위치로 급지하고, CR 모터 드라이브(140) 및 CR 모터(141)로 전송된 제어신호에 의해 캐리지메카니즘(31)을 왕복 운동시켜 캐리지메카니즘에 장착된 헤드카트리지(131)를 통해 인쇄를 실행한다.In addition, the control signal generated from the central processing unit 100 is transmitted to the LF motor drive 150 and LF motor 151 to feed the printing paper (P) to the printing position, CR motor drive 140 and CR motor The carriage mechanism 31 is reciprocated by the control signal transmitted to 141 to execute printing through the head cartridge 131 mounted on the carriage mechanism.

이 때, 캐리지메카니즘(30)에 장착된 헤드카트리지(131)는 중앙처리장치(100)로부터 인가된 제어신호를 전송받은 헤드드라이브(130)에 제어되어 잉크를 분사하여 인쇄용지(P)에 인자를 형성한다.At this time, the head cartridge 131 mounted on the carriage mechanism 30 is controlled by the head drive 130 receiving the control signal applied from the central processing unit 100 to spray ink to print on the printing paper P. To form.

인쇄용지(P)에 인자 작업이 완료되면 인자 작업이 완료된 인쇄용지(P)는, 배지로울러에 의해 배출되면 종료하게 된다.When the printing work is completed on the printing paper P, the printing paper P on which the printing work is completed is terminated when discharged by the discharge roller.

도 5는 본 발명에 따른 화이트라인을 보정하기 위한 상세도를 나타낸 것이고, 도 6은 흐름도를 나타낸 것이다.5 is a detailed view for correcting a white line according to the present invention, and FIG. 6 is a flowchart.

도 6의 흐름도를 참조하여 동작과정을 설명하면, 용지공급부(20)에 적재되어 있는 용지를 픽업하여 용지의 후단이 피드로울러(31)와 프릭션로울러(32)를 빠져나가기 전까지 인쇄를 실행하는 노말(Normal)인쇄과정과, 용지가 피드로울러와 프릭션로울러를 빠져나간 후에 발생한 화이트라인(White Line)을 순차적으로 보상한 후 인쇄된 용지를 배출하는 과정으로 구성된 특징이 있다.Referring to the flowchart of FIG. 6, the operation process is performed by picking up the paper loaded in the paper feeder 20 and executing printing until the rear end of the paper exits the feed roller 31 and the friction roller 32. Normal printing process and the process of compensating the white line generated after the paper exits the feed roller and friction roller in order to discharge the printed paper.

좀더 상세히 설명하면, 일반적인 노말인쇄과정(S110)은 유저(User)에 의해 용지공급부에 용지가 적재된 후 인쇄명령에 의해 픽업로울러가 시계방향(CCW)으로 회전을 하여 낱장으로 픽업을 하게 된다(S111).In more detail, in the normal normal printing process S110, after the paper is loaded in the paper feed unit by the user, the pickup roller rotates in the clockwise direction (CCW) by the print command to pick up the sheet in a single sheet. S111).

이와 같이 픽업로울러에 의해 낱장으로 픽업된 일정시간 동안 검출이 되지 않으면, 용지검출센서의 동작 유, 무를 확인(S112)하여 동작을 하지 않으면, 유저(User)는 픽업로울러에 의해 픽업된 용지가 제대로 피딩이 되지 않아 발생한 용지걸림(S113)을 해소하고, 용지가 계속 진행을 하여 용지검출센서에 검출이 되면 피드로울러와 프릭션로울러는 용지를 탑-마진(Top-Marjin)(T) 위치까지 피딩(Fiding)하게 된다(S114).In this case, if it is not detected for a predetermined time picked up by the pickup roller for a certain time, if the operation of the paper detection sensor is confirmed (S112) and the operation is not performed, the user (User) properly picks up the paper picked up by the pickup roller. Clear the paper jam (S113) caused by not feeding, and if the paper continues to be detected by the paper detection sensor, the feed roller and friction roller feed the paper to the Top-Marjin (T) position. (Fiding) (S114).

이와 같이 탑-마진(Top-Marjin) 위치까지 용지가 피딩이 되면, 다시 용지는 헤드카트리지의 노즐 폭(a)만큼 피딩이 되고, 인쇄장치인 헤드카트리지에 의해 인자폭 즉, 노즐 폭 a1 만큼 인쇄가 된다(S115).When the paper is fed to the Top-Marjin position as described above, the paper is fed again by the nozzle width (a) of the head cartridge, and printed by the printing width of the head cartridge as the printing device, that is, the nozzle width a1. It becomes (S115).

용지는 계속 피딩되어 용지의 후단이 용지검출센서에 의해 검출된 후 피딩되어야 할 피딩량 ("a") 만큼 피딩해도 용지의 후단이 피드로울러를 빠지기 전이면 "a2" 만큼 피딩(S116)하여 폭 "a2" 만큼 인쇄한다(S117).The paper is continuously fed and the rear end of the paper is detected by the paper detection sensor and then fed by the feeding amount ("a") to be fed. Print as much as "a2" (S117).

이와 같이 점차적으로 인자폭 즉 노즐폭 만큼 피딩(a1, a2,)하여 도 3에 도시한 바와 같이 피드로울러와 배지로울러에 의해 피딩이 되는 구간(A)이 모두 인쇄가 된다.In this way, the feed widths (a1, a2,) are gradually fed by the print width, that is, the nozzle width, and as shown in FIG. 3, the sections A to be fed by the feed rollers and the discharge rollers are printed.

한편, "a" 만큼 피딩하여 용지 후단이 피드로울러를 이탈할 때에는 피드로울러의 백러쉬 현상에 의해서 오버-피딩이 되고, 그 후에는 "a" 만큼씩 피드로울러에서 피딩하여도 용지는 도 5에서와 같이 "z" 만큼만 피딩이 된다(S121).On the other hand, when the rear end of the paper feeder feeds by " a ", the feed roller is over-feeded by the backlash phenomenon of the feed roller, and after that, the paper can be fed by the feed roller by " a " As much as "z" is fed only (S121).

그리고, 용지는 "y" → "x" → "a" →. . .(z≤y≤x≤a)와 같은 순서로 피딩(S123)하여 "z" → "y" → "x" → "a" → 순서로 인쇄가 된다(S124).The paper is "y " → " x " . (z≤y≤x≤a) and feeding (S123) in the order of "z" → "y" → "x" → "a" → print in the order (S124).

따라서, 용지의 후단이 피드로울러를 이탈하는 순간 오버-피딩(Over-Feeding)될 때 배지로울러에서 발생하는 백러쉬(Backlash) 현상을 없애주게 된다.Therefore, when the rear end of the paper is over-feeded at the time of leaving the feed roller, the backlash that occurs in the discharge roller is eliminated.

그 후, 용지는 피딩하면서 배지로울러의 백러쉬(Backlash)는 점차적으로 원상으로 회복되어 배지로울러의 피드량 a3→ a4→ a5에 따라 용지도 a3 → a4→ a5 만큼씩 피딩이 되면 도 3에 도시한 바와 같이 배지로울러에 의해 구동이 되는 B 구간이 인쇄가 된다.Thereafter, while the paper is fed, the backlash of the discharge roller is gradually restored to its original state, and when the paper is fed by a3 → a4 → a5 according to the feed amount a3 → a4 → a5 of the discharge roller, the paper is shown in FIG. 3. As described above, the section B driven by the discharge roller is printed.

이와 같이 B 구간이 인쇄가 된 후, 인쇄된 용지의 후단이 바톰-마진(Bottom-Marjin)(S125)의 위치에 도달하면 용지는 배지로울러에 의해 배지되어 인쇄가 종료된다.After the section B is printed in this manner, when the rear end of the printed sheet reaches the position of Bottom-Marjin (S125), the sheet is discharged by the discharge roller and the printing is finished.

이상에서 설명한 바와 같이, 피딩되는 용지의 후단을 감지하여 화이트 라인을 보정함으로서, 바톰 마진(Bottom Marjin)의 최소화에 따라 고 품질의 화상을 얻는 효과를 가진다.As described above, by detecting the rear end of the paper to be fed and correcting the white line, an image of high quality can be obtained by minimizing Bottom Marjin.

Claims (2)

잉크젯 프린터의 인쇄제어 방법에 있어서, 용지를 픽업하고, 용지의 탑마진위치로 용지를 피딩하는 단계; 일정한 인자폭으로 인쇄 및 피딩을 순차적으로 수행하는 단계; 용지 후단의 용지 유무를 검출하는 단계; 상기 단계에서 용지가 검출되지 아니하면 상기 정상 인자폭 보다는 적어도 같거나 작은 몇 단계의 인자폭, (z) → (y) → (x) → (a)순으로 피딩 및 인쇄를 순차적으로 수행하는 단계; 및 용지의 위치가 바톰 위치이면 배지하는 단계; 를 포함하여된 것을 특징으로 하는 잉크젯 프린터 화이트라인 보정방법.A printing control method of an inkjet printer, comprising: picking up paper and feeding the paper to a top margin position of the paper; Sequentially performing printing and feeding with a constant printing width; Detecting the presence or absence of paper at the rear end of the paper; If no paper is detected in the step, feeding and printing are performed sequentially in several steps of the printing width (z) → (y) → (x) → (a) ; Discharging if the position of the paper is the bottom position; Inkjet printer white line correction method comprising the. 제1항에 있어서, 상기 몇 단계의 인자폭, (z) → (y) → (x) → (a)순으로 피딩 및 인쇄를 순차적으로 수행하는 단계는 (z) ≤ (y) ≤ (x) ≤ (a)의 관계로 된 것을 특징으로 하는 잉크젯 프린터 화이트라인 보정방법.The method of claim 1, wherein the step of feeding and printing sequentially in the order of the width of the several steps, (z) → (y) → (x) → (a) is (z) ≤ (y) ≤ (x ) ≤ (a), wherein the inkjet printer white line correction method.
KR1019970070911A 1997-12-19 1997-12-19 White line compensating method inkjet printer KR100247400B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000045655A (en) * 1998-12-30 2000-07-25 윤종용 Method for amending white line of ink jet printer
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 (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000045655A (en) * 1998-12-30 2000-07-25 윤종용 Method for amending white line of ink jet printer
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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