KR100460963B1 - A printer mounted with paper pre-heating device - Google Patents
A printer mounted with paper pre-heating device Download PDFInfo
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- KR100460963B1 KR100460963B1 KR10-2002-0037127A KR20020037127A KR100460963B1 KR 100460963 B1 KR100460963 B1 KR 100460963B1 KR 20020037127 A KR20020037127 A KR 20020037127A KR 100460963 B1 KR100460963 B1 KR 100460963B1
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- paper
- printer
- printing
- preheating
- image
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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
- B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
- B41J29/38—Drives, motors, controls or automatic cut-off devices for the entire printing mechanism
- B41J29/393—Devices for controlling or analysing the entire machine ; Controlling or analysing mechanical parameters involving printing of test patterns
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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
- B41J2/04528—Control methods or devices therefor, e.g. driver circuits, control circuits aiming at warming up the head
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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
- B41J2/315—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material
- B41J2/38—Preheating, i.e. heating to a temperature insufficient to cause printing
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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
- B41J2002/0055—Heating elements adjacent to nozzle orifices of printhead for warming up ink meniscuses, e.g. for lowering the surface tension of the ink meniscuses
Abstract
개시된 본 발명에 의한 용지 예열장치을 구비한 프린터는 용지카세트에 적재된 인쇄용지를 픽업롤러로 픽업하여 상기 픽업된 인쇄용지를 화상형성수단에 공급하여 프린트작업을 수행하는 프린터에 있어서, 프린터의 내부에서 발생한 각종 열을 집적하여 용지 적재함에 방사시켜 용지를 예열시키기 위한 예열장치를 포함하는 것을 특징으로 한다. 이와 같은 본 발명에 의하면, 프린트를 하기 전에 미리 용지를 가열하여 용지 표면의 지분 및 습기 등을 제거하여 용지 표면의 지분으로 인한 화상 스폿이 확대되어 화상품질이 저하되는 것을 방지할 수 있고, 용지의 습기로 인해 낮은 전사전압이 인가되는 것을 방지하여 전사효율을 향상시킬 뿐만 아니라 습도가 높은 환경에서 발생할 수 있는 페이퍼 잼(jam)을 방지할 수 있는 효과가 있다.A printer having a paper preheating apparatus according to the present invention, which picks up printing paper loaded on a paper cassette with a pickup roller and supplies the picked printing paper to an image forming means, performs a print job in the printer. It characterized in that it comprises a preheating device for preheating the paper by accumulating the various heat generated and radiated to the paper stack. According to the present invention, before printing, the paper is heated in advance to remove the stake and moisture on the surface of the paper to enlarge the image spot due to the stake on the surface of the paper, thereby preventing the image quality from deteriorating. The low transfer voltage is prevented from being applied due to moisture, thereby improving the transfer efficiency and preventing paper jams that may occur in a high humidity environment.
Description
본 발명은 프린터에 관한 것이며, 보다 상세하게는 프린터의 각종 동작시 발생하는 열을 이용하여 용지를 예열하는 용지 예열장치를 구비한 프린터에 관한 것이다.The present invention relates to a printer, and more particularly to a printer having a paper preheating device for preheating paper using heat generated during various operations of the printer.
일반적으로, 레이저 프린터는 도 1에 도시된 바와 같이, 감광드럼(3)상에 일정한 전위를 형성시킬 수 있는 대전장치(7)를 이용하여 고압 방전시켜 일정한 전압으로 감광드럼(3)을 대전 시킨다. 그리고, 상기 대전된 감광드럼(3)을 노광장치(2)를 이용하여 노광시킴으로써 정전잠상을 형성한 후, 정전잠상을 가시상으로 만드는 수단인 현상기(4)를 이용하여 4개의 색을 중첩시켜서 현상한다. 상기 화상은 전사벨트(5)에 1차적으로 전사되며, 상기 전사벨트(5)에 전사된 화상을 다시 용지에 전사하여 원하는 화상을 출력할 수 있다.Generally, a laser printer charges the photosensitive drum 3 with a constant voltage by high-pressure discharge using a charging device 7 capable of forming a constant potential on the photosensitive drum 3, as shown in FIG. . The electrostatic latent image is formed by exposing the charged photosensitive drum 3 using the exposure apparatus 2, and then the four colors are superimposed using the developer 4, which is a means for making the electrostatic latent image visible. Develop. The image is primarily transferred to the transfer belt 5, and the image transferred to the transfer belt 5 is again transferred onto a sheet to output a desired image.
이와 같은 과정에 의하여 용지에 화상이 전사되면, 이를 영구 보존할 수 있도록 하기 위하여 열과 압력수단을 이용하여 화상을 정착시키는 수단인 정착기(6)를 통하여 화상을 정착시킴으로써 프린트를 종료하게 된다.When the image is transferred to the paper by this process, the printing is terminated by fixing the image through the fixing unit 6, which is a means for fixing the image using heat and pressure means in order to permanently preserve the image.
레이저 프린터(1)에서의 인쇄용지의 전체적인 전사특성은 제어 시스템(미도시)이 전사롤러(9)와 전사벨트(5) 사이에 인가해 주는 전사전압에 따라 판이하게 달라지게 된다. 즉, 전사전압이 낮은 경우에는 전사롤러(9)로부터 발생되는 정전인력이 약하여 토너의 상이 인쇄용지 위에 효율적으로 밀착되지 않아 전사 떨림이 발생한다. 반면에 전사전압이 높을 경우에는 전사벨트(5)의 토너가 역대전되어 토너의 상이 인쇄용지에 밀착되지 않거나, 전사롤러(9)로부터 발생되는 정전인력에 의하여 토너가 인쇄용지 위에 전사되어 화상이 흩어지게 된다. 따라서, 상기 제어 시스템은 전사를 수행하기에 앞서 인쇄용지의 저항을 인식하고, 인쇄용지가 전사구간을 통과할 때 인쇄용지의 고유저항값이 전사전압의 설정에 반영되도록 하여 전사롤러(9)의 실제 저항상태에 알맞는 적정 전사전압이 전사롤러로 신속히 인가될 수 있도록 함으로써, 전체적인 인쇄용지의 전사품질을 제어하게 된다.The overall transfer characteristics of the printing paper in the laser printer 1 vary depending on the transfer voltage applied by the control system (not shown) between the transfer roller 9 and the transfer belt 5. In other words, when the transfer voltage is low, the electrostatic attraction generated from the transfer roller 9 is weak, and the image of the toner does not adhere to the printing paper efficiently, so that the transfer vibration occurs. On the other hand, when the transfer voltage is high, the toner of the transfer belt 5 is reversely charged so that the image of the toner does not adhere to the printing paper, or the toner is transferred onto the printing paper by the electrostatic force generated from the transfer roller 9 so that the image is removed. It is scattered. Therefore, the control system recognizes the resistance of the printing paper prior to performing the transfer, and when the printing paper passes the transfer section, the resistivity value of the printing paper is reflected in the setting of the transfer voltage of the transfer roller 9. By allowing an appropriate transfer voltage suitable for the actual resistance state to be quickly applied to the transfer roller, the transfer quality of the entire printing paper is controlled.
그런데, 인쇄용지의 표면에 습기가 존재하게 되면 인쇄용지의 저항을 정확히 인식하지 못하게 된다. 따라서, 적정 전사전압이 전사롤러에 인가되지 못하여 감광드럼에 형성된 토너의 상이 인쇄용지에 효율적으로 전사되지 못하는 문제점이 있다.However, when moisture is present on the surface of the printing paper, the resistance of the printing paper may not be recognized accurately. Therefore, there is a problem in that an appropriate transfer voltage is not applied to the transfer roller, so that the image of the toner formed on the photosensitive drum cannot be efficiently transferred onto the printing paper.
또한, 인쇄용지의 경우 습도에 매우 민감할 뿐만 아니라, 특히 인쇄용지가 저온의 상태에서 정착기(6)와 접하게 되면 순간적으로 정착기(6)의 표면 온도를 저하시켜 정착 성능이 떨어져서 감광드럼(3)에 형성된 토너의 상이 인쇄용지에 효율적으로 전사되지 못한다는 문제점이 있다.In addition, the printing paper is not only very sensitive to humidity, but in particular, when the printing paper is brought into contact with the fixing unit 6 in a low temperature state, the surface temperature of the fixing unit 6 is temporarily lowered so that the fixing performance is lowered. There is a problem that the image of the toner formed thereon is not transferred to the printing paper efficiently.
본 발명은 상기와 같은 점을 감안하여 안출한 것으로, 프린터의 동작시 발생되는 각종 열을 이용하여 용지를 예열시킬 수 있는 용지 예열장치을 구비한 프린터를 제공하는데 그 목적이 있다.SUMMARY OF THE INVENTION The present invention has been made in view of the above, and an object thereof is to provide a printer having a paper preheating device capable of preheating paper using various heat generated during operation of the printer.
도 1은 일반적인 프린터의 내부구성을 개략적으로 나타내는 도면,1 is a view schematically showing the internal configuration of a typical printer,
도 2는 본 발명의 일 실시예에 따른 프린터의 내부구성을 개략적으로 나타내는 도면이다.2 is a view schematically showing an internal configuration of a printer according to an embodiment of the present invention.
< 도면의 주요 부분에 대한 부호의 설명 ><Description of Symbols for Main Parts of Drawings>
1 : 프린터 2 : 노광장치(LSU)1: Printer 2: Exposure Unit (LSU)
3 : 감광드럼 4 : 현상기3: photosensitive drum 4: developer
5 : 전사벨트 6 : 정착기5: transfer belt 6: fixing unit
7 : 대전장치 8 : 용지적재함7: charging device 8: loading paper
9 : 전사롤러 10 : 예열장치9: transfer roller 10: preheating device
11: 용지 수동 공급함 12 : 페이퍼 패스(paper path)11: manual feed tray 12: paper path
상기 목적을 달성하기 위한 본 발명에 의한 용지 예열장치를 구비한 프린터는, 용지카세트에 적재된 인쇄용지를 픽업롤러로 픽업하여 상기 픽업된 인쇄용지를 상형성수단에 공급하여 프린트작업을 수행하는 프린터에 있어서, 프린터의 내부에서 발생한 각종 열을 집적하여 용지에 방사시켜 용지를 예열시키는 예열장치를 포함하는 것을 특징으로 한다.A printer equipped with a paper preheating apparatus according to the present invention for achieving the above object, a printer for picking up the printing paper loaded in the paper cassette with a pickup roller to supply the picked up printing paper to the image forming means to perform a printing operation It characterized in that it comprises a pre-heating device for preheating the paper by accumulating the various heat generated inside the printer to radiate the paper.
상기 예열장치는 송풍팬으로 구성되는 것이 바람직 하다.The preheating device is preferably composed of a blowing fan.
그리고, 상기 송풍팬은 프린터 내부의 열을 용지가 적재된 용지적재함으로 보내는 위치에 설치되는 것이 바람직하다.In addition, the blower fan is preferably installed at a position to send heat inside the printer to a paper stack on which paper is loaded.
또한, 다른 또 하나의 송풍팬이 프린터 내부의 열을 수동 용지공급장치로 보내는 위치에 설치될 수도 있다.In addition, another blower fan may be installed at a position to send heat inside the printer to the manual paper feeder.
또한, 다른 또 하나의 송풍팬이 프린터 내부의 열을 페이퍼 패스로 보내는 위치에 설치될 수도 있다.In addition, another blower fan may be installed at a position to send heat inside the printer to the paper path.
또한, 2개의 송풍팬이 용지적재함과 수동 용지급지장치에 열을 방사할 수 있도록 설치되어 구성될 수도 있다.In addition, two blowing fans may be installed and configured to radiate heat to the paper stacker and the manual paper feeder.
본 발명의 상술한 목적 및 다른 특징들은 첨부도면을 참조하여 본 발명의 바람직한 실시예를 상세히 설명함으로써 보다 명백해질 것이다. 참고로 본 발명의 실시예를 설명함에 있어서, 종래와 그 구성 및 작용이 동일한 부분에 대해서는 동일한 참조부호를 부여하여 인용한다.The above objects and other features of the present invention will become more apparent by describing the preferred embodiments of the present invention in detail with reference to the accompanying drawings. For reference, in describing the embodiments of the present invention, the same reference numerals refer to the same parts as those in the related art.
첨부한 도 2는 본 발명의 일 실시예에 의한 용지 예열장치을 구비한 프린터의 내부구성을 개략적으로 나타내는 도면이다.2 is a view schematically illustrating an internal configuration of a printer having a paper preheating apparatus according to an embodiment of the present invention.
본 발명의 용지 예열장치을 구비한 프린터(1)는, 정전잠상을 형성시킬 수 있는 감광드럼(3)과, 상기 감광드럼(3)에 정전 잠상을 형성시키는 노광장치(2)(LSU)와, 상기 감광드럼(3)을 일정한 전위로 대전시키기 위한 대전장치(7)와, 정전잠상을 가시상으로 만드는 각각 다른 색을 가지는 4개의 현상기(4)와, 상기 4개의 현상기(4)의 4가지 색의 화상이 중첩되어 전사되는 전사벨트(5)와, 용지상에 분체 형태로 화상이 형성된 상태를 영구 보존할 수 있도록 열과 압력을 가하는 화상정착 수단인 정착기(6)와, 프린터 내부에서 발생하는 열을 집적하여 용지 적재장소로 방사하기 위한 예열장치(10)를 포함하여 구성된다.The printer 1 equipped with the paper preheating apparatus of the present invention includes a photosensitive drum 3 capable of forming an electrostatic latent image, an exposure apparatus 2 (LSU) for forming an electrostatic latent image on the photosensitive drum 3, Charging device 7 for charging the photosensitive drum 3 to a constant potential, four developing devices 4 each having a different color to make the electrostatic latent image visible, and four of the four developing devices 4 A transfer belt 5 in which color images are superimposed and transferred, a fixing unit 6 which is an image fixing means for applying heat and pressure to permanently preserve a state in which an image is formed in a powder form on a paper, It is configured to include a preheating device 10 for accumulating heat and radiating to the paper loading place.
이와 같은 본 발명에 의한 용지 예열장치을 구비한 프린터(1)는 프린터에 전원이 인가되어 동작을 하게 되면 고속의 노광장치(2)에서 계속적으로 열이 발생하게 되고, 또한 기타 다른 장치에서도 열이 발생한다. 특히 칼라 레이져 프린터의 경우에는 정착기(6)에서 가장 큰 열이 발생되어진다. 이렇게 발생되어진 프린터 기기의 내부의 열을 예열장치를 이용하여 집적하여서 용지 적재장소인 용지적재함(8) 등에 방사하게 되면 용지적재함(8)의 맨 위에 적재된 용지가 열기에 의하여 예열되어지는 것이다.The printer 1 having the paper preheating apparatus according to the present invention generates heat continuously in the high speed exposure apparatus 2 when power is applied to the printer, and heat is also generated in other apparatuses. do. In particular, in the case of a color laser printer, the greatest heat is generated in the fixing unit 6. When the heat generated inside the printer device is accumulated by using a preheating device and radiated to the paper storage box 8, which is a paper storage location, the paper loaded on the top of the paper storage box 8 is preheated by heat.
따라서, 이와 같이 예열됨과 동시에 습기가 제거되어진 용지가 픽업롤러(미도시)에 의하여 픽업되어 이송되어지면서 프린트되어지므로 적정 전사전압이 전사롤러(9)에 인가될 수 있고, 특히 인쇄용지가 예열되어진 상태에서 정착기(6)와 접할 수 있게 되어, 정착기(6)의 표면 온도를 유지할 수 있어, 감광드럼(3)에 형성된 토너의 상이 인쇄용지에 효율적으로 전사될 수 있다.Therefore, since the paper preheated and the moisture removed in this way is picked up by the pickup roller (not shown) and is printed while being printed, an appropriate transfer voltage can be applied to the transfer roller 9, and in particular, the printing paper is preheated. It is possible to contact the fuser 6 in the state, so that the surface temperature of the fuser 6 can be maintained, so that the image of the toner formed on the photosensitive drum 3 can be efficiently transferred to the printing paper.
한편, 예열장치는 도 2에 나타난 바와 같이, 하나의 예열장치(10)가 용지적재함(8)의 직상부에 위치하여 용지적재함(8)에 열을 방사할 수 있도록 설치될 수도 있다고, 수동 용지 공급장치(11)에 근접하여 설치되어 수동 용지 공급장치(11)에 열을 방사할 수 있도록 구성될 수도 있으며, 페이퍼 패스(12) 등의 픽업롤러와 정착장치의 사이에 열을 방사할 수 있도록 설치되어 용지를 예열할 수 있다.Meanwhile, as shown in FIG. 2, the preheater 10 may be installed so that one preheater 10 may be positioned directly above the paper stack 8 to radiate heat to the paper stack 8. It may be installed in close proximity to the feeder 11 and configured to radiate heat to the manual paper feeder 11, and to radiate heat between the pick-up rollers such as the paper path 12 and the fixing apparatus. It can be installed to preheat paper.
또한, 예열장치(10)는 2개의 송풍팬이 용지적재함(8)과 수동용지급지장치(11)에 열을 방사할 수 있도록 설치되어 구성될 수도 있다.In addition, the preheating device 10 may be installed so that two blowing fans can radiate heat to the paper storage box 8 and the manual paper feeder 11.
이상에서 설명한 바와 같은 본 발명에 의하면, 프린트를 하기 전에 미리 용지를 가열하여 용지 표면의 지분 및 습기 등을 제거하여 용지 표면의 지분으로 인한 화상 스폿이 확대되어 화상품질이 저하되는 것을 방지할 수 있고, 용지의 습기로 인해 낮은 전사전압이 인가되는 것을 방지하여 전사효율을 향상시킬 뿐만 아니라 습도가 높은 환경에서 발생할 수 있는 페이퍼 잼(jam)을 방지할 수 있는 효과가 있다.According to the present invention as described above, it is possible to prevent the deterioration of the image quality by expanding the image spot due to the stake of the paper surface by heating the paper in advance before printing to remove the stake and moisture on the surface of the paper before printing In addition, it is possible to prevent the low transfer voltage from being applied due to the moisture of the paper to improve the transfer efficiency as well as to prevent paper jams that may occur in a high humidity environment.
이상, 본 발명을 본 발명의 원리를 예시하기 위한 바람직한 실시예와 관련하여 도시하고 설명하였으나, 본 발명은 그와 같이 도시되고 설명된 그대로의 구성 및 작용으로 한정되는 것이 아니다. 오히려, 첨부된 특허청구범위의 사상 및 범주를 일탈함이 없이 본 발명에 대한 다수의 변경 및 수정이 가능함을 당업자들은 잘 이해할 수 있을 것이다. 따라서, 그러한 모든 적절한 변경 및 수정과 균등물들도 본 발명의 범위에 속하는 것으로 간주되어야 할 것이다.While the invention has been shown and described in connection with preferred embodiments for illustrating the principles of the invention, the invention is not limited to the construction and operation as shown and described. Rather, those skilled in the art will appreciate that many modifications and variations of the present invention are possible without departing from the spirit and scope of the appended claims. Accordingly, all such suitable changes and modifications and equivalents should be considered to be within the scope of the present invention.
Claims (7)
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| Application Number | Priority Date | Filing Date | Title |
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| KR10-2002-0037127A KR100460963B1 (en) | 2002-06-28 | 2002-06-28 | A printer mounted with paper pre-heating device |
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| Application Number | Priority Date | Filing Date | Title |
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| KR10-2002-0037127A KR100460963B1 (en) | 2002-06-28 | 2002-06-28 | A printer mounted with paper pre-heating device |
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| KR20040001805A KR20040001805A (en) | 2004-01-07 |
| KR100460963B1 true KR100460963B1 (en) | 2004-12-09 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US8324018B2 (en) | 2005-01-28 | 2012-12-04 | Semiconductor Energy Laboratory Co., Ltd. | Semiconductor device, electronic device, and method of manufacturing semiconductor device |
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| KR20050105353A (en) | 2004-04-30 | 2005-11-04 | 삼성전자주식회사 | Paper feeding apparatus for printer having a means for preventing paper double feeding |
| KR100733811B1 (en) * | 2005-10-06 | 2007-07-02 | 송병준 | Foil Stamping Machine |
| CN108535988A (en) * | 2018-05-21 | 2018-09-14 | 浙江安吉华普电子有限公司 | It is a kind of can damping preheating toner cartridge |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55117672A (en) * | 1979-03-03 | 1980-09-10 | Canon Inc | Thermal recording device |
| JPS55139266A (en) * | 1979-04-17 | 1980-10-30 | Nippon Telegr & Teleph Corp <Ntt> | Typing device of impact printer |
| JPS6168269A (en) * | 1984-09-13 | 1986-04-08 | Nippon Kogaku Kk <Nikon> | Thermal printer with preheating means |
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2002
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55117672A (en) * | 1979-03-03 | 1980-09-10 | Canon Inc | Thermal recording device |
| JPS55139266A (en) * | 1979-04-17 | 1980-10-30 | Nippon Telegr & Teleph Corp <Ntt> | Typing device of impact printer |
| JPS6168269A (en) * | 1984-09-13 | 1986-04-08 | Nippon Kogaku Kk <Nikon> | Thermal printer with preheating means |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8324018B2 (en) | 2005-01-28 | 2012-12-04 | Semiconductor Energy Laboratory Co., Ltd. | Semiconductor device, electronic device, and method of manufacturing semiconductor device |
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