KR20030027620A - Apparatus for feeding paper having electrostatic removing means - Google Patents
Apparatus for feeding paper having electrostatic removing means Download PDFInfo
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- KR20030027620A KR20030027620A KR1020010060984A KR20010060984A KR20030027620A KR 20030027620 A KR20030027620 A KR 20030027620A KR 1020010060984 A KR1020010060984 A KR 1020010060984A KR 20010060984 A KR20010060984 A KR 20010060984A KR 20030027620 A KR20030027620 A KR 20030027620A
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- South Korea
- Prior art keywords
- paper
- static electricity
- feed roller
- removing means
- cassette
- 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
- B41J2/015—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
- B41J2/04511—Control methods or devices therefor, e.g. driver circuits, control circuits for electrostatic discharge protection
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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
- B41J13/02—Rollers
- B41J13/025—Special roller holding or lifting means, e.g. for temporarily raising one roller of a pair of nipping rollers for inserting printing material
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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
- B41J13/02—Rollers
- B41J13/036—Rollers co-operating with a roller platen
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H1/00—Supports or magazines for piles from which articles are to be separated
- B65H1/26—Supports or magazines for piles from which articles are to be separated with auxiliary supports to facilitate introduction or renewal of the pile
- B65H1/266—Support fully or partially removable from the handling machine, e.g. cassette, drawer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H5/00—Feeding articles separated from piles; Feeding articles to machines
- B65H5/06—Feeding articles separated from piles; Feeding articles to machines by rollers or balls, e.g. between rollers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
Abstract
Description
본 발명은 프린터나 복사기의 급지장치에 관한 것으로서, 보다 상세하게는 용지에 발생하는 정전기를 제거할 수 있는 프린터나 복사기의 급지장치에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper feeder for a printer or a copier, and more particularly, to a paper feeder for a printer or a copier that can remove static electricity generated on paper.
일반적으로 급지장치는 급지카세트에 적층되어 있는 용지를 프린터나 복사기의 본체로 이송하여 인쇄나 복사가 이루어질 수 있도록 하는 장치이다.In general, a paper feeding device is a device that transfers paper stacked in a paper cassette to a main body of a printer or a copier so that printing or copying can be performed.
도 1을 참조하면, 급지장치는 급지카세트(5), 피드롤러(2), 녹업판(도시되지 않음), 가이드판(3)을 포함한다.Referring to FIG. 1, the paper feeding apparatus includes a paper feeding cassette 5, a feed roller 2, a knock up plate (not shown), and a guide plate 3.
급지카세트(5)는 인쇄나 프린터를 하는 용지(1)를 적층하여 적재한다.The paper feed cassette 5 stacks and stacks the paper 1 for printing or printer.
피드롤러(2)는 급지카세트(5)에 적재된 용지(1)를 가압하여 맨 위에 적재되어 있는 용지(1)와 피드롤러(2) 사이의 마찰력으로 용지(1)를 프린터나 복사기의 본체로 이송한다. 여기서, 피드롤러(2)에 의한 마찰력과 급지카세트(5)의 용지 진행방향에 있는 벽면의 저항력에 의해 맨 위에 있는 용지 한 장이 분리되어 본체로 이송된다.The feed roller (2) presses the paper (1) loaded on the paper feed cassette (5), and presses the paper (1) with the friction force between the paper (1) loaded on the top and the feed roller (2). Transfer to. Here, one sheet of paper at the top is separated and conveyed to the main body by the frictional force of the feed roller 2 and the resistance of the wall surface in the paper traveling direction of the paper feed cassette 5.
녹업판은 급지카세트(5)의 바닥에 설치되며, 일측은 힌지결합되어 있고, 타측은 압축스프링 등에 의해 탄성지지되어 있어, 용지(1)를 피드롤러(2)에 대해 가압한다. 따라서 계속된 인쇄로 용지(1)가 소모되더라도 피드롤러(2)와 용지(1) 사이의 마찰력이 유지되도록 한다.The knockup plate is installed at the bottom of the paper feed cassette 5, one side is hinged, and the other side is elastically supported by a compression spring or the like, and presses the paper 1 against the feed roller 2. Therefore, even if the paper 1 is consumed by the continuous printing, the friction force between the feed roller 2 and the paper 1 is maintained.
가이드판(3)은 급지카세트(5)의 일측벽, 또는 양측벽에 설치되는 판상의 부재로 도전성이 좋은 금속재료로 만들어진다. 이 가이드판(3)은 급지카세트(5)에 적재된 용지(1)가 원활하게 본체내로 이송되도록 안내한다.The guide plate 3 is a plate-like member provided on one side wall or both side walls of the paper feed cassette 5, and is made of a conductive metal material. This guide plate 3 guides the paper 1 loaded in the paper feed cassette 5 to be smoothly conveyed into the main body.
또한, 가이드판(3)은 프린터나 복사기의 접지단자(9)에 연결되어 있어, 피드롤러(2)와 용지(1)와의 마찰에 의해 발생하는 정전기, 용지(1)가 피드롤러(2)에 의해 용지들 사이에서 분리될 때 발생하는 정전기 및 용지(1) 자체가 함유하고 있는 정전기를 접지시켜 제거한다.In addition, the guide plate 3 is connected to the ground terminal 9 of the printer or copier so that static electricity generated by friction between the feed roller 2 and the paper 1 and the paper 1 are fed to the feed roller 2. The static electricity generated when separated between the sheets by the paper and the static electricity contained in the paper 1 itself is grounded and removed.
이하, 상기와 같은 종래의 급지장치의 동작을 상세히 설명한다.Hereinafter, the operation of the conventional paper feeder as described above will be described in detail.
급지카세트(5)에 용지(1)를 적재하면, 녹업판이 적재된 용지(1)를 피드롤러(2)에 대해 가압하여 피드롤러(2)와 용지(1) 사이에 마찰력이 발생한다. 그러면 피드롤러(2)가 회전하면서 상기의 마찰력으로 용지(1)를 한 장씩 분리하여 본체내로 이송한다.When the paper 1 is loaded in the paper feed cassette 5, the paper 1 on which the knock up plate is loaded is pressed against the feed roller 2 to generate a friction force between the feed roller 2 and the paper 1. Then, as the feed roller 2 rotates, the paper 1 is separated one by one by the frictional force, and is conveyed into the main body.
이때, 급지카세트(5) 측벽에 있는 가이드판(3)이 용지(1)의 안내역할을 하면서 용지(1)의 양측면과 접촉하고 있기 때문에 용지(1)에 발생한 정전기를 접지한다. 즉, 피드롤러(2)와 용지(1)와의 마찰에 의해 발생하는 정전기와, 용지(1)가 피드롤러(2)에 의해 용지들 사이에서 분리될 때 발생하는 정전기 및 용지(1) 자체의 정전기가 가이드판(3)을 통해 프린터나 복사기의 접지단자(9)로 연결되어 제거된다.At this time, since the guide plate 3 on the side of the paper feed cassette 5 is in contact with both sides of the paper 1 while serving as a guide of the paper 1, the static electricity generated in the paper 1 is grounded. That is, the static electricity generated by the friction between the feed roller 2 and the paper 1 and the static electricity generated when the paper 1 is separated between the paper by the feed roller 2 and the paper 1 itself. Static electricity is removed by connecting to the ground terminal 9 of the printer or copier through the guide plate (3).
그러나, 이와 같은 급지장치는 용지(1)의 양측면만이 가이드판(3)에 의해 접지되어 있기 때문에 피드롤러(2)에 의해서 용지(1)가 분리될 때 발생하는 정전기를 효과적으로 제거하지 못한다는 문제점이 있었다.However, this paper feeder does not effectively remove the static electricity generated when the paper 1 is separated by the feed roller 2 because only the both sides of the paper 1 are grounded by the guide plate 3. There was a problem.
용지(1)의 정전기가 완전히 제거되지 않으면, 용지간에 작용하는 힘이 피드롤러(2)와 용지(1) 사이의 마찰력과 급지카세트(5) 전면벽의 저항력에 의한 용지분리력보다 크게 되어 2장의 용지가 한꺼번에 이송되는 2매 급지가 발생한다. 또한, 용지(1)가 OPC까지 이송되었을 때는 용지(1)가 갖고 있는 정전기로 인해 전위를 갖고 있는 OPC에 손상을 가하여 결국은 화상에 손상을 가하게 된다. 따라서, 인쇄나 복사 품질이 나빠지게 된다.If the static electricity of the paper 1 is not completely removed, the force applied between the papers is greater than the paper separation force due to the friction force between the feed roller 2 and the paper 1 and the resistance of the front wall of the paper feed cassette 5. Two-sheet feeding occurs where paper is fed at once. In addition, when the paper 1 is transported to the OPC, the static electricity of the paper 1 causes damage to the OPC having a potential and eventually damages the image. As a result, the quality of printing or copying becomes poor.
본 발명은 상기와 같은 문제점을 해결하기 위하여 안출된 것으로, 용지에 발생하는 정전기를 효율적으로 제거함으로써, 용지의 2매 급지가 방지되고 또한, 정전기에 의한 화상의 손상이 방지되는 정전기 제거수단을 구비한 급지장치를 제공하는데 그 목적이 있다.SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and is provided with an electrostatic eliminating means for efficiently eliminating static electricity generated on a paper, thereby preventing two sheets of paper from being fed, and preventing damage of an image due to static electricity. Its purpose is to provide a paper feeder.
도 1은 종래의 급지장치를 개략적으로 나타낸 사시도,1 is a perspective view schematically showing a conventional paper feeder,
도 2는 본 발명에 의한 정전기 제거수단을 구비한 급지장치의 제1실시예를 개략적으로 나타낸 사시도,Figure 2 is a perspective view schematically showing a first embodiment of a paper feeding device equipped with a static electricity removing means according to the present invention,
도 3은 본 발명에 의한 정전기 제거수단을 구비한 급지장치의 제2실시예를 개략적으로 나타낸 사시도,3 is a perspective view schematically showing a second embodiment of a paper feeding device having a static electricity removing means according to the present invention;
도 4는 본 발명에 의한 정전기 제거수단을 구비한 급지장치의 제3실시예를 개략적으로 나타낸 사시도,4 is a perspective view schematically showing a third embodiment of a paper feeding device having static electricity removing means according to the present invention;
도 5는 본 발명에 의한 정전기 제거수단을 구비한 급지장치의 제4실시예를 개략적으로 나타낸 사시도이다.5 is a perspective view schematically showing a fourth embodiment of a paper feeding device equipped with a static electricity removing means according to the present invention.
*도면의 주요부분에 대한 부호의 설명** Description of the symbols for the main parts of the drawings *
12,12'; 피드롤러13; 가이드판12,12 '; Feed roller 13; Guide plate
15; 급지카세트16; 용지유무 감지센서15; Paper cassette 16; Paper presence sensor
21; 제전브러쉬23, 33; 접지선21; Antistatic brush 23, 33; Ground wire
31; 제전판31; Antistatic
상기와 같은 목적을 달성하기 위하여 본 발명에 의한 정전기 제거수단을 구비한 급지장치는, 용지가 적층되는 급지카세트와, 상기 급지카세트의 상측에 설치되며 상기 용지를 이송하는 피드롤러, 상기 급지카세트의 바닥에 설치되며 상기 용지를 상기 피드롤러에 대해 가압하는 녹업판, 상기 급지카세트 측벽의 내면에 설치되며, 상기 용지를 안내하는 가이드판, 상기 피드롤러와 상기 용지의 마찰에 의한 정전기와 상기 용지 사이의 정전기를 제거하는 정전기 제거수단을 포함하는 것을 특징으로 한다.In order to achieve the above object, a paper feeding device including static electricity removing means according to the present invention includes a paper feed cassette on which paper is stacked, a feed roller installed on an upper side of the paper feed cassette, and configured to transfer the paper. A knock-up plate installed at a bottom and pressurizing the paper against the feed roller, installed on an inner surface of the side of the paper feed cassette, a guide plate for guiding the paper, and static electricity caused by friction between the feed roller and the paper and the paper. Characterized in that it comprises a static electricity removing means for removing the static electricity.
상기 정전기 제거수단은, 상기 피드롤러와 상대운동을 하며 상기 용지의 상면에 접촉되도록 설치된 제전브러쉬와, 상기 제전브러쉬를 접지단자로 연결하는 접지선을 포함한다. 또한, 정전기 제거수단은, 상기 피드롤러와 상대운동을 하며, 상기 용지의 상면과 소정의 간극을 갖도록 설치된 톱날형상의 제전판 및 상기 제전판을 접지단자로 연결하는 접지선을 포함한다.The static electricity removing means includes an antistatic brush installed in a relative motion with the feed roller and in contact with an upper surface of the paper, and a ground wire connecting the antistatic brush to a ground terminal. In addition, the static electricity removing means includes a saw blade-shaped static elimination plate installed to have a predetermined gap with the upper surface of the paper and having a relative movement with the feed roller, and a ground wire connecting the static electricity elimination plate to the ground terminal.
이하, 첨부된 도면을 참조하여 본 발명에 의한 정전기 제거수단을 구비한 급지장치의 실시예에 대하여 설명한다.Hereinafter, with reference to the accompanying drawings will be described an embodiment of a paper feeding device having a static electricity removing means according to the present invention.
도 2를 참조하면, 본 발명의 제1실시예에 의한 정전기 제거수단을 구비한 급지장치는 급지카세트(15), 피드롤러(12), 녹업판(도시되지 않음), 가이드판(13) 및 정전기 제거수단을 포함한다.Referring to FIG. 2, the paper feeding device including the static electricity removing means according to the first embodiment of the present invention includes a paper feed cassette 15, a feed roller 12, a knock up plate (not shown), a guide plate 13, and the like. Electrostatic removal means.
급지카세트(15)는 복사용이나 프린터용 용지를 적층하여 적재한다.The paper feed cassette 15 stacks and stacks paper for copying and printer.
피드롤러(12)는 급지카세트(15)에 적재된 용지(1)를 가압하여 맨 위에 적재되어 있는 용지(1)와 피드롤러(12) 사이의 마찰력으로 용지(1)를 프린터나 복사기의 본체로 이송한다. 여기서, 피드롤러(12)에 의한 마찰력과 급지카세트(15)의 용지 진행방향에 있는 벽면(급지카세트의 전면벽)의 저항력의 작용에 의해 맨 위에 있는 용지 한 장이 분리되어 본체로 이송된다.The feed roller 12 presses the paper 1 loaded on the paper feed cassette 15, and presses the paper 1 by the frictional force between the paper 1 loaded on the top and the feed roller 12, so that the body of the printer or copier Transfer to. Here, a sheet of paper at the top is separated and conveyed to the main body by the action of the frictional force of the feed roller 12 and the resistance of the wall surface (front wall of the paper feed cassette) in the paper traveling direction of the paper feed cassette 15.
녹업판은 급지카세트(15)의 바닥에 설치되며, 일측은 힌지결합되어 있고, 타측은 압축스프링 등의 탄성부재에 의해 탄성지지되어 있어, 용지(1)를 피드롤러(12)에 대해 가압한다. 따라서 계속된 인쇄로 인해 용지(1)가 소모되더라도 피드롤러(12)와 용지(1) 사이의 마찰력이 유지되어진다.The knockup plate is installed at the bottom of the paper feed cassette 15, one side is hinged, and the other side is elastically supported by an elastic member such as a compression spring to press the paper 1 against the feed roller 12. . Thus, even if the paper 1 is consumed due to the continuous printing, the friction force between the feed roller 12 and the paper 1 is maintained.
가이드판(13)은 급지카세트(15)의 일측벽, 또는 양측벽에 설치되는 판상의부재로 도전성이 좋은 금속재료로 만들어진다. 이 가이드판(13)은 급지카세트(15)에 적재된 용지(1)가 원활하게 본체내로 이송되도록 안내한다.The guide plate 13 is a plate-like member provided on one side wall or both side walls of the paper feed cassette 15, and is made of a highly conductive metal material. The guide plate 13 guides the paper 1 loaded in the paper feed cassette 15 to be smoothly conveyed into the main body.
또한, 가이드판(13)은 프린터나 복사기의 접지단자(9)에 연결되어 있기 때문에, 피드롤러(12)와 용지(1)와의 마찰에 의해 발생하는 정전기, 용지(1)가 피드롤러(12)에 의해 용지들 사이에서 분리될 때 발생하는 정전기 및 용지(1) 자체가 함유하고 있는 정전기 등은 용지(1)의 양측면을 통해 가이드판(13)으로 흐르게 되고 이어서 프린트나 복사기의 접지단자(9)를 통해 빠져나가게 된다.In addition, since the guide plate 13 is connected to the ground terminal 9 of the printer or copier, the static electricity generated by the friction between the feed roller 12 and the paper 1 and the paper 1 are fed to the feed roller 12. Static electricity generated when the paper is separated between the sheets and the static electricity contained in the sheet 1 flows to the guide plate 13 through both sides of the sheet 1, and then to the grounding terminal of the print or copier ( Through 9).
정전기 제거수단은 제전브러쉬(21)와 접지선(23)을 구비한다.The static electricity removing means includes an antistatic brush 21 and a ground line 23.
제전브러쉬(21)는 몸체(21a)와 브러쉬(21b)를 포함하며, 피드롤러(12)의 양측에 설치된다.The antistatic brush 21 includes a body 21a and a brush 21b and is installed at both sides of the feed roller 12.
제전브러쉬(21)는 피드롤러의 축(12a)과 동축상에 상호간에 상대운동을 할 수 있도록 조립되어 있다. 즉, 피드롤러축(12a)이 제전브러쉬 몸체(21a)에 삽입되어 회전할 수 있도록 결합되어 있다. 브러쉬(21b)는 자중에 의해 용지(1)의 상면에 접촉하고 있다.The antistatic brush 21 is assembled to allow relative movement between the shaft 12a and the coaxial shaft of the feed roller. That is, the feed roller shaft 12a is inserted into the antistatic brush body 21a and coupled to rotate. The brush 21b is in contact with the upper surface of the paper 1 by its own weight.
접지선(23)은 제전브러쉬 몸체(21a)의 일측을 급지카세트(15)에 마련된 가이드판(13)의 접지와 연결하여 제전브러쉬(21)를 통해 흐르는 정전기가 접지단자(9)로 빠져나가도록 한다.The ground wire 23 connects one side of the antistatic brush body 21a with the ground of the guide plate 13 provided in the paper feed cassette 15 so that static electricity flowing through the antistatic brush 21 escapes to the ground terminal 9. do.
이하, 상기와 같은 구성요소를 갖는 본 발명에 의한 정전기 제거수단을 구비한 급지장치의 작용을 설명한다.Hereinafter, the operation of the paper feeding device including the static electricity removing means according to the present invention having the above components will be described.
급지카세트(15)에 용지(1)를 적재하면, 녹업판이 적재된 용지(1)를피드롤러(12)를 향해 가압하여 피드롤러(12)와 용지(1) 사이에 마찰력이 발생한다. 그러면 피드롤러(12)가 회전하면서 상기의 마찰력으로 용지(1)를 분리하여 본체내로 이송한다.When the paper 1 is loaded in the paper feed cassette 15, the paper 1 on which the knock up plate is loaded is pressed against the feed roller 12 to generate a friction force between the feed roller 12 and the paper 1. Then, as the feed roller 12 rotates, the paper 1 is separated and conveyed into the main body by the frictional force.
이때, 급지카세트(15) 측벽에 있는 가이드판(13)이 용지(1)의 안내역할을 하면서 용지(1)의 양측면과 접촉하고 있기 때문에 용지(1)에 발생한 정전기를 접지하여 제거한다.At this time, since the guide plate 13 on the side of the paper feed cassette 15 is in contact with both sides of the paper 1 while serving as a guide of the paper 1, the static electricity generated in the paper 1 is grounded and removed.
또한, 피드롤러(12)의 양측에 설치된 제전브러쉬(21)가 용지(1)를 폭방향으로 접촉하고 있기 때문에, 용지(1)에 발생한 정전기를 용지(1)의 피드롤러(12) 접촉부부터 끝단까지 계속적으로 접지하여 제거한다.In addition, since the static elimination brush 21 provided on both sides of the feed roller 12 is in contact with the paper 1 in the width direction, the static electricity generated in the paper 1 starts from the contact portion of the feed roller 12 of the paper 1. Continue grounding to the end and remove.
제전브러쉬(21)에 의해 접지된 정전기는 접지선(23)을 통해 가이드판(13)에 접속되고, 결국 가이드판(13)의 접지라인을 따라 프린터나 복사기의 접지단자(9)로 빠져나가게 된다.The static electricity grounded by the antistatic brush 21 is connected to the guide plate 13 through the ground wire 23, and eventually exits to the ground terminal 9 of the printer or copier along the ground line of the guide plate 13. .
즉, 본 발명에 의한 정전기 제거수단을 구비한 급지장치는 용지(1)의 측면뿐만 아니라, 용지(1)의 폭방향으로도 접지되어 있기 때문에, 피드롤러(12)와 용지(1)와의 마찰에 의해 발생하는 정전기, 용지(1)가 피드롤러(12)에 의해 용지들 사이에서 분리될 때 발생하는 정전기 및 용지(1) 자체가 함유하고 있는 정전기가 종래의 급지장치보다 효율적으로 접지되어 제거된다.That is, since the paper feeding device including the static electricity removing means according to the present invention is grounded not only in the side surface of the paper 1 but also in the width direction of the paper 1, friction between the feed roller 12 and the paper 1 is achieved. Static electricity generated by the paper 1 and the static electricity generated when the paper 1 is separated between the papers by the feed roller 12 and the static electricity contained in the paper 1 itself are grounded and removed more efficiently than a conventional paper feeder. do.
따라서, 용지(1)에 잔류하는 정전기가 거의 존재하지 않기 때문에, 용지(1)의 2매 급지가 발생하지 않게 된다. 또한, 정전기가 없는 용지(1)가 OPC로 이송되므로 화상이 손상되지 않게되어 인쇄나 복사의 품질이 훼손되는 일이 발생하지 않는다.Therefore, since there is almost no static electricity remaining on the paper 1, two sheets of paper 1 are not fed. In addition, since the static-free paper 1 is transported to the OPC, the image is not damaged and the quality of printing or copying is not impaired.
도 3은 본 발명에 의한 정전기 제거수단을 구비한 급지장치의 제2실시예이다.3 is a second embodiment of a paper feeding device including static electricity removing means according to the present invention.
도면을 참조하면, 제2실시예는 제1실시예에 의한 정전기 제거수단을 구비한 급지장치와 정전기 제거수단만이 상이하고 나머지는 동일하다.Referring to the drawings, the second embodiment is different from the paper feeding apparatus including the static electricity removing means according to the first embodiment and the static electricity removing means and the rest are the same.
정전기 제거수단은 제전판(31)과 접지선(33)을 구비한다.The static electricity removing means includes an antistatic plate 31 and a ground line 33.
제전판(31)은 몸체(31a)와 톱날형상의 핀(31b)으로 이루어지며, 피드롤러(12)의 양측에 설치된다. 제전판(31)은 피드롤러의 축(12a)과 동축상에 상호간에 상대운동을 할 수 있도록 조립되어 있다. 즉, 피드롤러축(12a)이 제전판 몸체(31a)에 삽입되어 회전할 수 있도록 결합되어 있다. 톱날형상의 핀(31b)은 용지(1)의 상면과 일정한 간극을 유지하도록 설치된다.The antistatic plate 31 is composed of a body 31a and a saw blade pin 31b, and is installed at both sides of the feed roller 12. The static electricity elimination plate 31 is assembled so as to be relative to each other on the same axis as the shaft 12a of the feed roller. That is, the feed roller shaft 12a is inserted into the antistatic plate body 31a and coupled to rotate. The saw blade-shaped pin 31b is provided so as to maintain a constant gap with the upper surface of the paper 1.
접지선(33)은 제전판 몸체(31a)의 일측과 급지카세트(15)에 마련된 가이드판(12)을 연결함으로써 제전판(31)을 통해 흐르는 정전기가 접지단자(9)로 빠져나가게 한다.The ground wire 33 connects one side of the static electricity elimination plate body 31a with the guide plate 12 provided on the paper feed cassette 15 so that the static electricity flowing through the static electricity discharge plate 31 escapes to the ground terminal 9.
용지(1)에 축적된 정전기는 피뢰침과 동일한 원리로 제전판(31)의 톱날형상의 핀(31b)을 통해 방전되어 접지단자(9)로 빠져나가게 된다. 또한, 일부의 정전기는 제1실시예와 동일하게 용지(1)의 양측면에 접촉된 가이드판(13)을 통해 접지단자(9)로 빠져나간다.The static electricity accumulated on the sheet 1 is discharged through the saw blade-shaped pin 31b of the electrostatic discharge plate 31 and exits to the ground terminal 9 on the same principle as the lightning rod. In addition, some static electricity is discharged to the ground terminal 9 through the guide plate 13 in contact with both sides of the paper 1 as in the first embodiment.
도 4 및 도 5는 용지유무 감지센서(16)가 더 포함되는 급지장치에 있어서, 정전기 제거수단이 구비된 급지장치를 나타낸다.4 and 5 illustrate a paper feeder equipped with a static electricity removing means in the paper feeder further including a paper presence sensor 16.
도면을 참조하면, 본 발명에 의한 정전기 제거수단을 구비한 급지장치는, 급지카세트(15), 피드롤러(12'), 녹업판(도시되지 않음), 용지유무 감지센서(16), 가이드판(13) 및 정전기 제거수단을 포함하며, 정전기 제거수단은 용지유무 감지센서(16)와 동축상에 설치되어 있다.Referring to the drawings, the sheet feeding apparatus equipped with the static electricity removing means according to the present invention, the paper feed cassette 15, the feed roller 12 ', knock-up plate (not shown), the paper presence sensor 16, the guide plate 13 and static electricity removing means, the static electricity removing means being provided coaxially with the paper presence sensor 16.
급지카세트(15), 녹업판, 가이드판(13)은 상기에서 설명한 제1실시예와 동일하다.The paper feeding cassette 15, the knockup plate and the guide plate 13 are the same as in the first embodiment described above.
피드롤러(12')는 정전기 제거수단이 동축결합되지 않기때문에 일단지지가 가능하다는 것 외에는 제1실시예의 피드롤러(12)와 동일하다.The feed roller 12 'is the same as the feed roller 12 in the first embodiment except that the static electricity removing means is not coaxially coupled so that it can be supported once.
용지유무 감지센서(16)는 급지카세트(15)에 용지(1)가 적재되어 있는가를 확인하는 센서로서, 급지카세트(15)의 상측이며 동시에 피드롤러(12')의 뒷쪽인 위치에 설치된다.The paper presence sensor 16 is a sensor for checking whether the paper 1 is loaded in the paper feed cassette 15, and is installed at a position above the paper feed cassette 15 and at the back of the feed roller 12 '.
도 4는 정전기 제거수단을 구비한 급지장치의 제3실시예로서 정전기 제거수단이 제전브러쉬(21)와 접지선(23)인 경우를 나타낸다.FIG. 4 shows a case where the static electricity removing means is the antistatic brush 21 and the ground line 23 as the third embodiment of the paper feeding apparatus including the static electricity removing means.
제전브러쉬(21)는 몸체(21a)와 브러쉬(21b)를 포함하며, 용지유무 감지센서(16)의 양측에 설치된다.The antistatic brush 21 includes a body 21a and a brush 21b and is installed at both sides of the paper presence sensor 16.
제전브러쉬(21)는 용지유무 감지센서의 축(16a)과 동축상에 상호간에 상대운동을 할 수 있도록 조립되어 있다. 즉, 용지유무 감지센서축(16a)이 제전브러쉬 몸체(21a)에 삽입되어 회전할 수 있도록 결합되어 있다. 브러쉬(21b)는 자중에 의해 용지(1)의 상면에 접촉하고 있다.The antistatic brush 21 is assembled to allow relative movement between the axis 16a of the paper presence sensor coaxially with each other. That is, the paper presence sensor shaft (16a) is inserted into the antistatic brush body (21a) is coupled to rotate. The brush 21b is in contact with the upper surface of the paper 1 by its own weight.
접지선(23)은 제전브러쉬 몸체(21a)의 일측을 급지카세트(15)에 마련된 가이드판(13)의 접지와 연결하여 제전브러쉬(21)를 통해 흐르는 정전기가 접지단자(9)로 빠져나가도록 한다.The ground wire 23 connects one side of the antistatic brush body 21a with the ground of the guide plate 13 provided in the paper feed cassette 15 so that static electricity flowing through the antistatic brush 21 escapes to the ground terminal 9. do.
정전기의 제거작용은 상기에서 설명한 제1실시예와 동일하므로 상세한 설명은 생략한다.Since the action of removing static electricity is the same as in the first embodiment described above, the detailed description is omitted.
도 5는 정전기 제거수단을 구비한 급지장치의 제4실시예로서, 정전기 제거수단이 제전판(31) 및 접지선(33)인 경우를 나타낸다.FIG. 5 shows a case of the paper feeding device including the static electricity removing means, in which the static electricity removing means is the electrostatic removing plate 31 and the ground line 33. As shown in FIG.
본 실시예에 의한 급지장치는 제전판(31)이 용지유무 감지센서(16)와 동축상에 설치된다는 것만이 상기에서 설명한 제2실시예의 정전기 제거수단을 구비한 급지장치와 다르므로 상세한 설명은 생략한다.Since the paper feeding device according to the present embodiment differs from the paper feeding device with the static electricity removing means of the second embodiment described above, only that the electrostatic discharge plate 31 is coaxially installed with the paper presence sensor 16. Omit.
이상에서 설명한 바와 같이 본 발명에 의한 정전기 제거수단을 구비한 급지장치는, 용지에 발생하는 정전기가 효과적으로 제거됨으로써, 용지의 2매 급지가 발생하지 않을 뿐만 아니라, OPC의 손상에 의한 화상손상이 발생하지 않기 때문에 인쇄나 복사의 품질저하를 방지할 수 있다.As described above, the paper feeding device provided with the static electricity removing means according to the present invention effectively eliminates static electricity generated on the paper, thereby not only feeding two sheets of paper, but also causing image damage due to damage to the OPC. This prevents quality deterioration of printing or copying.
이상에서는 본 발명의 특정의 바람직한 실시예에 대하여 도시하고 또한 설명하였다. 그러나, 본 발명은 상술한 실시예에 한정되지 아니하며, 특허청구의 범위에서 청구하는 본 발명의 요지를 벗어남이 없이 당해 발명이 속하는 기술분야에서 통상의 지식을 가진 자라면 누구든지 다양한 변형실시가 가능할 것이다.In the above, certain preferred embodiments of the present invention have been illustrated and described. However, the present invention is not limited to the above-described embodiments, and various modifications can be made by those skilled in the art without departing from the gist of the present invention as claimed in the claims. will be.
Claims (8)
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| CN103002648A (en) * | 2011-09-08 | 2013-03-27 | Lgn-Sys株式会社 | Electrostatic discharging apparatus and financial apparatus |
| CN103434866A (en) * | 2013-08-30 | 2013-12-11 | 无锡宝南机器制造有限公司 | Paper alignment adjusting device |
| KR20190026221A (en) * | 2017-09-04 | 2019-03-13 | 주식회사 에이텍에이피 | Media storage apparatus and financial device thereof |
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| KR900002169Y1 (en) * | 1987-07-10 | 1990-03-15 | 오성송촌전기주식회사 | Automatic lighting control circuit |
| JPH0313367A (en) * | 1989-06-12 | 1991-01-22 | Nec Corp | Serial printer |
| JP3469259B2 (en) * | 1992-10-13 | 2003-11-25 | 株式会社リコー | Static eliminator |
| JP2661603B2 (en) * | 1995-11-17 | 1997-10-08 | 富士ゼロックス株式会社 | Static elimination brush and manufacturing method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100580916B1 (en) * | 2004-06-30 | 2006-05-23 | 노틸러스효성 주식회사 | Apparatus for arranging rear part of paper |
| CN103002648A (en) * | 2011-09-08 | 2013-03-27 | Lgn-Sys株式会社 | Electrostatic discharging apparatus and financial apparatus |
| US8837105B2 (en) | 2011-09-08 | 2014-09-16 | Lg Cns Co., Ltd. | Electrostatic discharging apparatus and financial apparatus |
| CN103002648B (en) * | 2011-09-08 | 2016-03-30 | 乐金信世股份有限公司 | Electrostatic discharge apparatus and finance device |
| CN103434866A (en) * | 2013-08-30 | 2013-12-11 | 无锡宝南机器制造有限公司 | Paper alignment adjusting device |
| KR20190026221A (en) * | 2017-09-04 | 2019-03-13 | 주식회사 에이텍에이피 | Media storage apparatus and financial device thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| KR100402796B1 (en) | 2003-10-22 |
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