KR100243162B1 - Sheet feeding apparatus for printing device - Google Patents

Sheet feeding apparatus for printing device Download PDF

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Publication number
KR100243162B1
KR100243162B1 KR1019970068326A KR19970068326A KR100243162B1 KR 100243162 B1 KR100243162 B1 KR 100243162B1 KR 1019970068326 A KR1019970068326 A KR 1019970068326A KR 19970068326 A KR19970068326 A KR 19970068326A KR 100243162 B1 KR100243162 B1 KR 100243162B1
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KR
South Korea
Prior art keywords
paper
printing
roller
fixing roller
feeding apparatus
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KR1019970068326A
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Korean (ko)
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KR19990049387A (en
Inventor
경명호
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윤종용
삼성전자주식회사
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Priority to KR1019970068326A priority Critical patent/KR100243162B1/en
Publication of KR19990049387A publication Critical patent/KR19990049387A/en
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Publication of KR100243162B1 publication Critical patent/KR100243162B1/en

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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/65—Apparatus which relate to the handling of copy material
    • G03G15/6502—Supplying of sheet copy material; Cassettes therefor
    • G03G15/6511—Feeding devices for picking up or separation of copy sheets
    • 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
    • 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
    • B65H3/46—Supplementary devices or measures to assist separation or prevent double feed
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/20—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat
    • G03G15/2003—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat
    • G03G15/2014—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat using contact heat
    • G03G15/2017—Structural details of the fixing unit in general, e.g. cooling means, heat shielding means
    • G03G15/2028—Structural details of the fixing unit in general, e.g. cooling means, heat shielding means with means for handling the copy material in the fixing nip, e.g. introduction guides, stripping means
    • 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
    • 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
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/42—Piling, depiling, handling piles
    • B65H2301/423—Depiling; Separating articles from a pile
    • B65H2301/4234—Depiling; Separating articles from a pile assisting separation or preventing double feed

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fixing For Electrophotography (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)

Abstract

개시된 인쇄기기의 급지장치는, 용지를 고온의 정착롤러 외주면에 밀착시켜서 건조시키는 용지건조수단을 구비하고 있다. 따라서, 인쇄유니트에서 인쇄가 진행되기 전에 용지를 건조시킬 수 있기 때문에, 습기를 머금은 용지를 사용하더라도 인쇄시 화상이 번지는 등의 악영향을 받지 않는다.The paper feeding apparatus of the disclosed printing apparatus includes paper drying means for adhering the paper to a high temperature fixing roller outer circumferential surface and drying the paper. Therefore, since the paper can be dried before printing proceeds in the printing unit, even if the paper containing moisture is used, the image is not adversely affected when printing.

Description

인쇄기기의 급지장치{Sheet feeding apparatus for printing device}Sheet feeding apparatus for printing device

본 발명은 인쇄기기의 급지장치에 관한 것으로서, 특히 용지에 포함된 습기를 건조시키면서 급지할 수 있도록 구조 개선된 인쇄기기의 급지장치에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper feeder of a printing machine, and more particularly, to a paper feeder of a printing machine whose structure is improved to be fed while drying the moisture contained in the paper.

종래 레이저 프린터와 같은 인쇄기기에는, 그 내부로 용지를 순차 공급하면서 인쇄공정을 수행하기 위한 급지장치로서, 도 1에 도시된 바와 같이, 프린터 본체(100)에 착탈가능하게 결합되며 복수매의 용지(1)가 수납되는 카세트(110)와, 상기 본체(100) 내부의 용지 이송 경로상에 설치되어 상기 카세트(110)로부터 공급되는 용지를 소정의 인쇄유니트(130)를 거쳐 본체(100) 외부로 이송시키는 복수의 이송롤러(2)들과, 상기 카세트(110)로부터의 급지 및 상기 인쇄유니트(130)에서의 인쇄를 제어하기 위한 콘트롤러(140)가 구비되어 있다. 따라서, 인쇄작업을 수행할 때에는 상기 콘트롤러(140)가 상기 이송롤러(2)들을 구동시켜서, 상기 카세트(110)로부터 상기 인쇄유니트(130)로 용지를 이송시키며, 그 인쇄유니트(130)에 의해 인쇄가 완료된 용지를 배지부(150)를 통해 다시 본체(100) 외부로 배출시키게 된다. 그리고 상기 인쇄유니트(130)에는 감광벨트(131)로부터 화상을 전사받아서 용지에 인쇄하는 전사롤러(132)와, 용지를 전사롤러(132) 측으로 가압하여 화상을 정착시키는 정착롤러(133)가 구비되어 있으며, 이 두 롤러(132)(133)는 인쇄작업이 수행되는 동안 소정 히팅수단(미도시)에 의해 외주면이 가열된 상태를 유지한다.In a printing apparatus such as a conventional laser printer, a paper feeding device for performing a printing process while sequentially supplying paper into the inside thereof, as shown in FIG. 1, is detachably coupled to the printer main body 100 and has a plurality of sheets of paper. Cassette 110 in which (1) is housed, and the paper supplied from the cassette 110 is installed on the paper transfer path inside the main body 100 through a predetermined printing unit 130 outside the main body 100. A plurality of feed rollers 2 to be transferred to the rollers, and a controller 140 for controlling the feeding from the cassette 110 and the printing in the print unit 130 are provided. Therefore, when performing a print job, the controller 140 drives the transfer rollers 2 to transfer paper from the cassette 110 to the print unit 130, and by the print unit 130. The printed paper is discharged to the outside of the main body 100 again through the discharge unit 150. In addition, the printing unit 130 includes a transfer roller 132 that receives an image from the photosensitive belt 131 and prints the image on the paper, and a fixing roller 133 that presses the paper toward the transfer roller 132 to fix the image. The two rollers 132 and 133 maintain a state in which the outer circumferential surface is heated by a predetermined heating means (not shown) during the printing operation.

그런데 인쇄작업을 수행하다 보면, 때로는 습한 환경에 비치되어 있던 용지를 사용하게 될 경우가 있다. 이와 같은 용지는 습기를 머금고 있을 가능성이 높고, 습기가 포함된 용지를 인쇄작업에 사용하게 되면, 그 습기의 영향 때문에 상기 인쇄유니트(130)에서 화상이 제대로 정착되지 못하고 번져버리는 등의 문제점이 발생된다.However, during the printing process, sometimes the paper used in the humid environment is used. Such a paper is likely to contain moisture, and when a paper containing moisture is used for a print job, there is a problem such that an image may not be properly settled in the print unit 130 due to the moisture, and the image may be blurred. Is generated.

본 발명은 상기의 문제점을 해결하기 위해 창출된 것으로서, 용지에 포함된 습기를 건조시키면서 급지할 수 있도록 개선된 인쇄기기의 급지장치를 제공하는데 그 목적이 있다.SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object thereof is to provide a paper feeder for an improved printing machine so as to feed paper while drying the moisture contained in the paper.

도 1은 종래의 급지장치가 채용된 인쇄기기의 내부 구조를 개략적으로 도시한 도면,1 is a view schematically showing the internal structure of a printing apparatus employing a conventional paper feeder,

도 2는 본 발명의 일 실시예에 따른 급지장치를 보인 도면,2 is a view showing a paper feeding apparatus according to an embodiment of the present invention;

도 3은 본 발명의 다른 실시예에 따른 급지장치를 보인 도면.3 is a view showing a paper feeding apparatus according to another embodiment of the present invention.

< 도면의 주요부분에 대한 부호의 설명 ><Description of Symbols for Major Parts of Drawings>

100...프린터 본체 110...카세트100 ... printer body 110 ... cassette

130...인쇄유니트 131...감광벨트130 Printing unit 131 Photosensitive belt

132...전사롤러 133...정착롤러132 ... Transfer Roller 133 ... Fixing Roller

140...콘트롤러 150...배지부140 Controller 150 Badge

210...용지가압롤러 220...가이드플레이트210.Paper press roller 220 ... Guide plate

1...용지 2...이송롤러1 ... paper 2 ... feed roller

상기 목적을 달성하기 위한 본 발명은, 카세트로부터 용지를 인출하여 인쇄유니트에 마련된 전사롤러 및 정착롤러 사이로 진입시키는 인쇄기기의 급지장치에 있어서, 상기 용지가 상기 전사롤러 및 정착롤러 사이로 진입되기 전에, 상기 정착롤러의 외주면에 접촉된 상태로 이송되도록 가이드함으로써, 그 정착롤러의 열을 이용하여 상기 용지를 건조시키는 용지건조수단이 구비된 것을 특징으로 한다.The present invention for achieving the above object, in the paper feeder of the printing machine to take out the paper from the cassette to enter between the transfer roller and the fixing roller provided in the printing unit, before the paper enters between the transfer roller and the fixing roller, By guiding to be transported in contact with the outer peripheral surface of the fixing roller, it characterized in that the paper drying means for drying the paper by using the heat of the fixing roller.

여기서 상기 용지건조수단은, 이송되는 용지를 상기 정착롤러의 외주면에 밀착시키는 용지가압롤러와, 상기 용지가압롤러를 통과한 용지의 선단부를 상기 전사롤러와 정착롤러 사이로 진입되도록 가이드하는 가이드플레이트를 포함하여 구성되는 것이 바람직하다.Here, the paper drying means includes a paper press roller for bringing the conveyed paper into close contact with the outer circumferential surface of the fixing roller, and a guide plate for guiding the leading end of the paper passing through the paper press roller between the transfer roller and the fixing roller. It is preferable to be configured.

이하 첨부된 도면을 참조하면서 본 발명에 따른 바람직한 실시예를 상세히 설명하기로 한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 2는 본 발명에 따른 급지장치를 개략적으로 나타내고 있다. 도면에서 상기한 도 1과 동일한 부재에 대해서는 동일한 번호를 부여하였다.2 schematically shows a paper feeding apparatus according to the present invention. In the drawings, the same reference numerals are given to the same members as those in FIG. 1 described above.

도시된 바와 같이, 본 발명에 따른 급지장치의 특징적 요소는, 상기 인쇄유니트(130)로 용지가 진입되기 전에, 그 용지(1)를 정착롤러(133)의 외주면에 접촉된 상태로 이송되도록 가이드함으로써, 정착롤러(133)의 열에 의해 용지(1)를 건조시키는 용지건조수단이 구비되어 있는 점이다. 이 용지건조수단은, 이송되는 용지(1)를 상기 정착롤러(133)의 외주면에 밀착시키는 용지가압롤러(210)와, 상기 용지가압롤러(210)를 통과한 용지(1)의 선단부를 상기 전사롤러(132)와 정착롤러(133) 사이로 진입되도록 가이드하는 가이드플레이트(220)를 포함하여 구성된다.As shown, a characteristic element of the paper feeding apparatus according to the present invention is a guide for transporting the paper 1 in contact with the outer circumferential surface of the fixing roller 133 before the paper enters the printing unit 130. The paper drying means for drying the paper 1 by the heat of the fixing roller 133 is provided. The paper drying means includes a paper press roller 210 for bringing the conveyed paper 1 into close contact with the outer circumferential surface of the fixing roller 133, and a front end portion of the paper 1 passing through the paper press roller 210. It comprises a guide plate 220 for guiding to enter between the transfer roller 132 and the fixing roller 133.

상기 구성에 있어서 인쇄작업이 시작되면, 본 발명의 급지장치는 상기 카세트(110)로부터 용지(1)를 인출하여 상기 인쇄유니트(130)로 이송시킨다. 이와 같이 인출된 용지(1)는 복수의 이송롤러(2)들에 의해 이송되다가 상기 용지가압롤러(210)에 의해 상기 정착롤러(133)의 외주면에 밀착된 상태로 진행된다. 이때 상기 정착롤러(133)에서 발생되는 열이 용지(1)를 건조시켜서, 그 용지(1)가 머금고 있던 습기를 제거하게 된다. 그리고 이와 같은 건조가 진행된 용지(1)의 선단부는, 상기 가이드플레이트(220)에 의해 유도되어 상기 전사롤러(132) 및 정착롤러(133) 사이로 물려들어가게 된다. 따라서 상기 전사롤러(132)와 정착롤러(133) 사이에서 인쇄가 진행될 때에는 용지가 이미 건조된 상태이기 때문에, 습기에 의해 화상이 번지는 등의 영향을 받지 않고 선명한 화질을 인쇄할 수 있는 것이다. 그리고 이와 같이 용지의 건조 및 인쇄를 동시에 수행하기 위해서, 상기 전사롤러(132)의 표면온도를 약 100℃정도로, 상기 정착롤러(133)의 표면온도를 약 85℃정도로 유지하는 것이 바람직하다.When the print job is started in the above configuration, the paper feeding apparatus of the present invention pulls out the paper 1 from the cassette 110 and transfers it to the printing unit 130. The paper 1 drawn in this way is conveyed by a plurality of feed rollers 2 and proceeds to be in close contact with the outer circumferential surface of the fixing roller 133 by the paper press roller 210. At this time, the heat generated from the fixing roller 133 to dry the paper (1), to remove the moisture contained in the paper (1). And the front end portion of the paper 1, which has been dried as described above, is guided by the guide plate 220 and is passed between the transfer roller 132 and the fixing roller 133. Therefore, when printing is performed between the transfer roller 132 and the fixing roller 133, since the paper is already dried, it is possible to print clear picture quality without being affected by moisture, such as image spreading. In order to simultaneously perform drying and printing of the paper as described above, it is preferable to maintain the surface temperature of the transfer roller 132 at about 100 ° C and the surface temperature of the fixing roller 133 at about 85 ° C.

한편, 카세트(110)의 위치를 도 3에 도시된 바와 같이 상방으로 이동하여 구성할 수도 있는데, 이는 용지(1)가 상기 정착롤러(133)에 접촉되는 접촉각을 크게 하는데 유효하다. 즉, 용지가 상기 정착롤러(133)의 상부에서부터 감겨들면서 전사롤러(132) 및 정착롤러(133) 사이로 진입되도록 용지의 이송 경로를 변경함으로써, 용지가 건조되는 시간을 길게 늘일 수 있다.On the other hand, the position of the cassette 110 may be configured by moving upward as shown in FIG. 3, which is effective for increasing the contact angle at which the paper 1 contacts the fixing roller 133. That is, by changing the conveying path of the paper so that the paper enters between the transfer roller 132 and the fixing roller 133 while the paper is wound from the top of the fixing roller 133, it is possible to lengthen the time the paper is dried.

상술한 바와 같이 본 발명의 급지장치는, 인쇄유니트에서 인쇄가 진행되기 전에 용지를 건조시킬 수 있도록 구성되어 있기 때문에, 습기를 머금은 용지를 사용하더라도 인쇄시 화상이 번지는 등의 악영향을 받지 않는다.As described above, the paper feeding apparatus of the present invention is configured to dry the paper before printing proceeds in the printing unit, so that even if paper containing moisture is used, the image is not adversely affected during printing.

본 발명은 상기에 설명되고 도면에 예시된 것에 의해 한정되는 것은 아니며, 다음에 기재되는 청구의 범위 내에서 더 많은 변형 및 변용예가 가능한 것임은 물론이다.It is to be understood that the invention is not limited to that described above and illustrated in the drawings, and that more modifications and variations are possible within the scope of the following claims.

Claims (1)

카세트로부터 용지를 인출하여 인쇄유니트에 마련된 전사롤러 및 정착롤러 사이로 진입시키는 인쇄기기의 급지장치에 있어서;A paper feeder of a printing machine which takes out a sheet of paper from a cassette and enters between a transfer roller and a fixing roller provided in a printing unit; 상기 카세트로부터 이송되는 용지를 상기 정착롤러의 외주면에 밀착시키는 용지가압롤러와, 상기 용지가압롤러를 통과한 용지의 선단부를 상기 전사롤러와 정착롤러 사이로 진입되도록 가이드하는 가이드플레이트를 포함하는 용지건조수단;이 구비된 것을 특징으로 하는 인쇄기기의 급지장치.Paper drying means including a paper press roller for bringing the paper conveyed from the cassette into the outer circumferential surface of the fixing roller, and a guide plate for guiding the leading end of the paper passing through the paper pressing roller between the transfer roller and the fixing roller. Paper feeder of a printing machine, characterized in that provided.
KR1019970068326A 1997-12-12 1997-12-12 Sheet feeding apparatus for printing device KR100243162B1 (en)

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KR1019970068326A KR100243162B1 (en) 1997-12-12 1997-12-12 Sheet feeding apparatus for printing device

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