KR20040009879A - Developing apparatus for liquid printer - Google Patents

Developing apparatus for liquid printer Download PDF

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Publication number
KR20040009879A
KR20040009879A KR1020020044247A KR20020044247A KR20040009879A KR 20040009879 A KR20040009879 A KR 20040009879A KR 1020020044247 A KR1020020044247 A KR 1020020044247A KR 20020044247 A KR20020044247 A KR 20020044247A KR 20040009879 A KR20040009879 A KR 20040009879A
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KR
South Korea
Prior art keywords
developing
roller
developing roller
developer
potential
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KR1020020044247A
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Korean (ko)
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KR100437164B1 (en
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송인용
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삼성전자주식회사
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Priority to KR10-2002-0044247A priority Critical patent/KR100437164B1/en
Publication of KR20040009879A publication Critical patent/KR20040009879A/en
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Publication of KR100437164B1 publication Critical patent/KR100437164B1/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
    • G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
    • G03G15/10—Apparatus for electrographic processes using a charge pattern for developing using a liquid developer
    • G03G15/104—Preparing, mixing, transporting or dispensing developer
    • 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
    • G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
    • G03G15/10—Apparatus for electrographic processes using a charge pattern for developing using a liquid developer
    • G03G15/108—Apparatus for electrographic processes using a charge pattern for developing using a liquid developer with which the recording material is brought in contact, e.g. immersion or surface immersion development
    • 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
    • G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
    • G03G15/10—Apparatus for electrographic processes using a charge pattern for developing using a liquid developer
    • G03G15/11—Removing excess liquid developer, e.g. by heat
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
    • G03G21/0088—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge removing liquid developer
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/06—Developing structures, details
    • G03G2215/0634—Developing device
    • G03G2215/0658—Liquid developer devices

Abstract

PURPOSE: A developing device of a wet type printer is provided to effectively remove a developer left on a developing roller. CONSTITUTION: A developing device of a wet type printer includes a developing tank(21) storing a liquid developer, a developing roller(23) set in the developing tank to be provided with the first voltage to supply the developer to a photosensitive drum(10), and a deposit roller(25) that is placed in the developing tank, rotated in contact with the developing roller and provided with the second voltage higher than the first voltage to supply the developer to the developing roller. The developing device further includes a cleaning roller(27) that is located in contact with the developing roller and removes a developer left on the developing roller and a biasing unit(30) that applies an AC voltage to the cleaning member.

Description

습식 인쇄기의 현상장치{Developing apparatus for liquid printer}Developing apparatus for liquid printers

본 발명은 습식 인쇄기의 현상장치에 관한 것이다.The present invention relates to a developing apparatus for a wet printer.

일반적으로, 레이저 프린터나 복사기와 같은 화상형성장치는, 현상 방식에 따라 분말토너(toner)를 현상제로 사용하는 건식과, 노파(norpar)와 같은 액상의 캐리어에 토너를 혼합하여 사용하는 습식으로 구분된다. 이 두 가지 방식은 모두 정전잠상이 형성되는 감광드럼과 같은 감광매체에 토너를 공급하여 소정 화상을 현상한 뒤, 그 감광드럼과 접촉되어 회전하는 전사매체와 백업롤러 사이로 용지를 통과시킴으로서 현상된 화상을 용지에 인쇄시킨다. 최근에는 습식 현상방식이 본격적으로 채용되고 있다.In general, an image forming apparatus such as a laser printer or a copying machine is classified into a dry type using a powder toner as a developer and a wet type using a toner mixed with a liquid carrier such as a norpar according to a developing method. do. Both of these methods develop images by supplying toner to a photosensitive medium such as a photosensitive drum on which an electrostatic latent image is formed, and then developing a predetermined image, and then passing the paper between the rotating transfer medium and the backup roller in contact with the photosensitive drum. Print on the paper. Recently, the wet developing method has been adopted in earnest.

즉, 입자사이즈가 0.5∼5㎛이하의 토너입자를 사용하는 습식 인쇄기는 감광매체에 형성된 정전잠상을 현상시 고화질의 화상을 얻을 수 있는 이점이 있다.That is, a wet printing machine using toner particles having a particle size of 0.5 to 5 탆 or less has an advantage of obtaining a high quality image when developing an electrostatic latent image formed on a photosensitive medium.

최근에는 습식 인쇄기의 경우 액체현상제의 잉크농도를 낮은 수준(약 3%)부터 높은 수준(약40%)까지 사용하고 있다.Recently, in the case of a wet press, the ink concentration of the liquid developer is used from a low level (about 3%) to a high level (about 40%).

이러한 습식 인쇄기 중 일 예를 살펴보면, 액상의 현상제가 수용된 현상조 내에 현상롤러 및 디포짓(deposit)롤러 및 크리닝롤러가 설치된다. 상기 현상롤러는 감광드럼에 접촉회전되며 소정 전위가 인가된다. 이러한 구성에서, 상기 디포짓 롤러에 상기 현상롤러보다 높은 전위를 인가함으로써 현상롤러로 액상의 현상제를 공급하고, 현상롤러로 공급된 현상제는 감광드럼에 형성된 정전잠상영역으로 현상된다. 그리고, 현상롤러에 잔류하는 현상제는 상기 현상롤러에 접촉회전되는 크리닝롤러에 의해 크리닝된다.Looking at one example of such a wet printing machine, a developing roller, a deposit roller, and a cleaning roller are installed in a developing tank in which a liquid developer is accommodated. The developing roller is brought into contact rotation with the photosensitive drum and a predetermined potential is applied thereto. In this configuration, a liquid developer is supplied to the developing roller by applying a potential higher than that of the developing roller to the deposit roller, and the developer supplied to the developing roller is developed into an electrostatic latent image region formed on the photosensitive drum. Then, the developer remaining in the developing roller is cleaned by the cleaning roller which is rotated in contact with the developing roller.

또한, 현상롤러에는 공급된 현상제를 일정한 두께로 균일하게 콘트롤해주기 위한 미터링 블레이드(metering blade)가 접촉되게 설치된다.In addition, the developing roller is installed in contact with a metering blade for uniformly controlling the supplied developer to a constant thickness.

이상의 구성에서와 같은 구성에서, 균일한 화상농도를 유지하기 위해서는 현상롤러 상에 균일한 토너층이 요구된다. 이를 위해서는 현상 후 현상롤러에 잔류하는 토너를 최대한 제거해주는 것이 중요하다. 그런데, 상기 현상롤러에 잔류하는 토너입자는 감광드럼과 현상롤러 사이의 현상갭에서 대전전위 및 현상롤러의 전위차로 인한 전계로 인해 강하게 현상롤러에 부착되기 때문에, 상기 크리닝롤러에 의해 크리닝하여 제거하는데는 한계가 있다.In the configuration as in the above configuration, in order to maintain uniform image concentration, a uniform toner layer is required on the developing roller. To this end, it is important to remove as much of the toner remaining in the developing roller after development. However, the toner particles remaining in the developing roller are strongly attached to the developing roller due to the electric field due to the charge potential and the electric potential difference of the developing roller in the developing gap between the photosensitive drum and the developing roller, so that the cleaning roller is cleaned and removed by the cleaning roller. There is a limit.

본 발명은 상기와 같은 문제점을 해결하기 위해 창안된 것으로, 현상롤러에 잔류하는 현상제를 효과적으로 제거할 수 있도록 개선된 습식 인쇄기의 현상장치를 제공하는데 그 목적이 있다.The present invention has been made to solve the above problems, and an object thereof is to provide a developing apparatus of a wet printing machine that can be improved to effectively remove the developer remaining in the developing roller.

도 1은 본 발명의 실시예에 따른 습식 인쇄기의 현상장치.1 is a developing apparatus of a wet printer according to an embodiment of the present invention.

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

10..감광드럼 21..현상조10. Photosensitive drum 21. Developing

23..현상롤러 25..디포짓수단23 .. Development roller 25. Depot means

27..크리닝부재 30..바이어스부27. Cleaning member 30. Bias part

상기 목적을 달성하기 위한 본 발명에 따른 습식 인쇄기의 현상장치는, 감광매체에 형성된 정전잠상으로 현상제를 현상시키기 위한 습식 인쇄기의 현상장치에 있어서, 액상의 현상제가 소정 수위로 저장되는 현상조와; 상기 현상조 내에 회전 가능하게 설치되어 상기 감광매체로 전위차에 의해 현상제를 공급하도록 소정 제1전위가 인가되는 현상롤러와; 상기 현상롤러에 접촉회전되게 상기 현상조 내에 설치되며, 상기 제1전위보다 높은 제2전위가 인가되어 전위차에 의해 상기 현상롤러로 현상제를 공급하는 디포짓 수단과; 상기 현상롤러에 접촉 회전되게 설치되며, 상기 감광매체로 현상되고 상기 현상롤러에 잔류하는 현상제를 제거하는 크리닝롤러와; 상기 크리닝롤러로 직류가 중첩된 교류전압을 인가하는 바이어스부;를 포함하는 것을 특징으로 한다.A developing apparatus of a wet printing machine according to the present invention for achieving the above object comprises: a developing apparatus of a wet printing machine for developing a developer with an electrostatic latent image formed on a photosensitive medium, the developing tank storing a liquid developer at a predetermined level; A developing roller rotatably installed in the developing tank, to which a predetermined first potential is applied to supply the developer to the photosensitive medium by a potential difference; Depositing means installed in the developing tank so as to be in contact rotation with the developing roller, and having a second potential higher than the first potential applied thereto to supply the developer to the developing roller by a potential difference; A cleaning roller installed in contact with the developing roller and rotating in contact with the developing roller to remove the developer remaining in the developing roller; And a bias unit configured to apply an alternating current (DC) voltage superimposed on the cleaning roller.

여기서, 상기 크리닝부재에 인가되는 교류전압에 중첩된 직류전압은 상기 현상롤러에 공급되는 제1전위와 동일한 것이 바람직하다.Here, the DC voltage superimposed on the AC voltage applied to the cleaning member is preferably the same as the first potential supplied to the developing roller.

또한, 상기 크리닝부재는 도전성 스폰지로 이루어진 롤러이며, 상기 현상롤러와 동일한 방향으로 회전 구동되는 것이 좋다.In addition, the cleaning member is a roller made of a conductive sponge, it is preferable to be driven in the same direction as the developing roller.

이하 첨부된 도면을 참조하여 본 발명의 실시예에 따른 습식 인쇄기의 현상장치를 자세히 설명하기로 한다.Hereinafter, a developing apparatus of a wet printer according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명의 실시예에 따른 습식 인쇄기의 현상장치를 나타내 보인 개략적인 구성도이다.1 is a schematic configuration diagram showing a developing apparatus of a wet printer according to an embodiment of the present invention.

도면을 참조하면, 본 발명의 실시예에 따른 현상장치는, 감광드럼(10)과 같은 감광매체에 형성된 정전잠상 영역에 현상제를 현상시키기 위한 것으로, 액상의 현상제가 소정 수위로 저장된 현상조(21)와, 상기 현상조(21) 내에 설치되는 현상롤러(23) 및 디포짓(deposit) 수단(25)과, 상기 현상롤러(23)를 크리닝하기 위한 크리닝부재(27) 및 바이어스부(30)를 구비한다.Referring to the drawings, a developing apparatus according to an embodiment of the present invention is for developing a developer in an electrostatic latent image region formed on a photosensitive medium such as the photosensitive drum 10. The developing tank in which a liquid developer is stored at a predetermined level ( 21, the developing roller 23 and the deposit means 25 provided in the developing tank 21, the cleaning member 27 and the bias part 30 for cleaning the developing roller 23. ).

상기 감광드럼(10)은 전사벨트에 접촉회전되게 설치된다. 상기 감광드럼(10)은 통상의 전자사진방식 인쇄기에 적용되는 것으로서, 미도시된 대전수단에 의해 소정 전위로 대전된 뒤, 레이저 주사유닛에 의해 부분적으로 노광되어 정전잠상이 형성된다.The photosensitive drum 10 is installed to rotate in contact with the transfer belt. The photosensitive drum 10 is applied to a conventional electrophotographic printing press. The photosensitive drum 10 is charged to a predetermined potential by a charging means not shown, and then partially exposed by a laser scanning unit to form an electrostatic latent image.

상기 현상조(21)는 감광드럼(10)의 하부에 설치되며, 소정 현상제 공급부로부터 공급된 액상의 현상제가 수용된다. 상기 액상의 현상제는 토너입자와 절연성 액체 캐리어(norpar, isopar 등)가 혼합된 상태이며, 농도범위는 약 3% 내지 40% 까지 사용될 수 있다.The developing tank 21 is installed under the photosensitive drum 10 to accommodate a liquid developer supplied from a predetermined developer supply unit. The liquid developer is a mixture of toner particles and an insulating liquid carrier (norpar, isopar, etc.), the concentration range may be used up to about 3% to 40%.

상기 현상롤러(23)는 현상조(21) 내의 액상의 현상제에 일정부분이 잠긴 상태로 회전되게 설치된다. 또한, 현상롤러(23)는 감광드럼(10) 소정 현상갭을 갖고, 그 감광드럼의 반대방향으로 회전구동된다. 이 현상롤러(23)에는 소정 제1전위가 인가된다. 따라서, 현상롤러(23) 표면으로 공급된 현상제는 감광드럼(10)과 현상롤러(23) 사이의 전위차에 의해 상기 현상갭(G)에서 감광드럼(10)의 정전잠상 영역으로 옮겨져 현상된다.The developing roller 23 is installed to rotate in a state in which a certain part is locked in the liquid developer in the developing tank 21. Further, the developing roller 23 has a predetermined developing gap of the photosensitive drum 10, and is driven to rotate in the direction opposite to the photosensitive drum. A predetermined first potential is applied to the developing roller 23. Therefore, the developer supplied to the surface of the developing roller 23 is transferred to the electrostatic latent image region of the photosensitive drum 10 from the developing gap G by the potential difference between the photosensitive drum 10 and the developing roller 23. .

상기 디포짓(deposit) 수단(25)은 현상조(21) 내의 액상의 현상제에 잠긴 상태로 회전되도록 설치되는 디포짓롤러를 구비한다. 상기 디포짓롤러는 현상롤러(23)에 접촉회전되면서, 그 현상롤러(23) 표면으로 현상제를 공급한다. 이를 위해, 디포짓롤러에는 상기 제1전위보다 높은 제2전위가 인가된다. 디포짓롤러와 현상롤러 사이의 전위차에 의해 현상롤러(23)로 현상제를 효과적으로 공급할 수 있게 된다.The deposit means 25 includes a deposit roller installed to rotate while being immersed in a liquid developer in the developing tank 21. The deposit roller is in contact rotation with the developing roller 23, and supplies the developer to the surface of the developing roller 23. To this end, a second potential higher than the first potential is applied to the deposit roller. The developer can be effectively supplied to the developing roller 23 by the potential difference between the deposit roller and the developing roller.

또한, 상기 현상롤러(23)에 공급된 현상제를 균일한 두께로 콘트롤하기 위한 미터링 블레이드(metering blade)(24)가 더 구비된다. 이 미터링 블레이드(24)는 디포짓롤러와 감광드럼(10) 사이에 배치되며, 현상롤러(23)에 소정 압력으로 탄력적으로 접촉된다.In addition, a metering blade 24 for controlling the developer supplied to the developing roller 23 to a uniform thickness is further provided. The metering blade 24 is disposed between the deposit roller and the photosensitive drum 10 and elastically contacts the developing roller 23 at a predetermined pressure.

상기 크리닝부재(27)는 상기 현상조(21) 내에서 액상의 현상제에 잠긴 상태로 회전가능하게 설치되며, 도전성 재질의 스폰지로 된 스폰지롤러인 것이 좋다. 상기 스폰지롤러(27)는 현상롤러(23)와 동일한 방향으로 접촉회전되면서, 현상롤러(23)에 잔류하는 토너입자 등을 제거한다.The cleaning member 27 is rotatably installed in a state of being immersed in a liquid developer in the developing tank 21, and may be a sponge roller made of a conductive material sponge. The sponge roller 27 is in contact rotation in the same direction as the developing roller 23, to remove toner particles and the like remaining in the developing roller 23.

상기 바이어스부(30)는 상기 스폰지롤러(27)로 직류가 중첩된 교류를 인가한다. 이를 위해, 바이어스부(30)는 직류를 인가하기 위한 직류전원공급부(31)와, 상기 직류전원공급부(31)와 연결되어 직류를 중첩되게 스폰지롤러(27)로 인가하는 교류전원공급부(33)로 구성된다.The bias unit 30 applies an alternating current in which direct current is superimposed on the sponge roller 27. To this end, the bias unit 30 is connected to the DC power supply unit 31 for applying a direct current, and the AC power supply unit 33 is connected to the DC power supply unit 31 to apply a direct current to the sponge roller 27 to overlap. It consists of.

여기서, 바람직하게는 상기 직류전원공급부(31)에서는 상기 현상롤러(23)로인가되는 제1전위와 동일한 전위가 인가되는 것이 바람직하다.Here, it is preferable that the same potential as that of the first potential applied to the developing roller 23 is applied to the DC power supply unit 31.

이와 같이, 상기 스폰지롤러(27)로 직류가 중첩된 교류를 인가하게 되면, 현상롤러(23) 상의 토너입자가 스폰지롤러(27)에 의해 크리닝되면서, 그 스폰지롤러(27)에 부착되는 것을 억제할 수 있으며 또한, 현상롤러(23)에 부착된 토너 입자를 진동시켜 효과적으로 제거할 수 있게 된다. 즉, 스폰지롤러(27)를 이용하여 1차적으로는 물리적인 크리닝작업을 하고, 2차적으로는 전기적으로 크리닝함으로써 현상롤러(23) 표면을 종래에 비해 효과적으로 크리닝할 수 있게 된다.In this way, when an alternating current in which direct current is superimposed on the sponge roller 27 is applied, the toner particles on the developing roller 23 are cleaned by the sponge roller 27, and the adhesion of the sponge roller 27 to the sponge roller 27 is suppressed. In addition, the toner particles attached to the developing roller 23 can be vibrated to be effectively removed. That is, the surface of the developing roller 23 can be cleaned more effectively than in the related art by first performing physical cleaning using the sponge roller 27 and secondly electrically cleaning.

이상에서 설명한 바와 같은 본 발명에 따른 습식 인쇄기의 현상장치에 따르면, 현상롤러를 크리닝하기 위한 스폰지롤러에 직류가 중첩된 교류전압을 인가함으로서, 현상롤러를 물리적 및 전기적으로 크리닝할 수 있다.According to the developing apparatus of the wet printing machine according to the present invention as described above, by applying an alternating current of DC superimposed on the sponge roller for cleaning the developing roller, it is possible to physically and electrically clean the developing roller.

따라서, 스폰지롤러가 현상롤러에서 제거된 토너입자에 의해 재 오염되는 것을 방지하면서, 현상롤러 상의 토너입자를 전기적인 진동으로 효과적으로 크리닝할 수 있다. 따라서, 결과적으로 현상롤러의 크리닝효율이 향상되어 일정한 화상농도를 유지할 수 있는 이점이 있다.Therefore, the toner particles on the developing roller can be effectively cleaned by electric vibration while preventing the sponge roller from being recontaminated by the toner particles removed from the developing roller. Therefore, as a result, the cleaning efficiency of the developing roller is improved, and there is an advantage of maintaining a constant image density.

Claims (3)

감광매체에 형성된 정전잠상으로 현상제를 현상시키기 위한 습식 인쇄기의 현상장치에 있어서,In the developing apparatus of a wet printer for developing a developer with an electrostatic latent image formed on the photosensitive medium, 액상의 현상제가 소정 수위로 저장되는 현상조와;A developing tank in which a liquid developer is stored at a predetermined level; 상기 현상조 내에 회전 가능하게 설치되어 상기 감광매체로 전위차에 의해 현상제를 공급하도록 소정 제1전위가 인가되는 현상롤러와;A developing roller rotatably installed in the developing tank, to which a predetermined first potential is applied to supply the developer to the photosensitive medium by a potential difference; 상기 현상롤러에 접촉회전되게 상기 현상조 내에 설치되며, 상기 제1전위보다 높은 제2전위가 인가되어 전위차에 의해 상기 현상롤러로 현상제를 공급하는 디포짓 수단과;Depositing means installed in the developing tank so as to be in contact rotation with the developing roller, and having a second potential higher than the first potential applied thereto to supply the developer to the developing roller by a potential difference; 상기 현상롤러에 접촉되게 설치되며, 상기 감광매체로 현상되고 상기 현상롤러에 잔류하는 현상제를 제거하는 크리닝부재와;A cleaning member installed in contact with the developing roller, the cleaning member being developed by the photosensitive medium and removing the developer remaining in the developing roller; 상기 크리닝부재로 직류가 중첩된 교류전압을 인가하는 바이어스부;를 포함하는 것을 특징으로 하는 습식 인쇄기의 현상장치.And a bias unit for applying an alternating current (DC) superimposed on the cleaning member. 제1항에 있어서, 상기 크리닝부재에 인가되는 교류전압에 중첩된 직류전압은 상기 현상롤러에 공급되는 제1전위와 동일한 것을 특징으로 하는 습식 인쇄기의 현상장치.The developing apparatus of claim 1, wherein a DC voltage superimposed on an AC voltage applied to the cleaning member is the same as the first potential supplied to the developing roller. 제1항 또는 제2항에 있어서, 상기 크리닝부재는 도전성 스폰지로 이루어진 롤러이며, 상기 현상롤러와 동일한 방향으로 회전 구동되는 것을 특징으로 하는 습식 인쇄기의 현상장치.The developing apparatus of claim 1 or 2, wherein the cleaning member is a roller made of a conductive sponge, and is driven to rotate in the same direction as the developing roller.
KR10-2002-0044247A 2002-07-26 2002-07-26 Developing apparatus for liquid printer KR100437164B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100736107B1 (en) * 2005-07-14 2007-07-06 농업회사법인 주식회사 자연에 Manufacturing Method of Spiral Rice Cake Bar
KR101047557B1 (en) * 2008-11-27 2011-07-07 기아자동차주식회사 Passenger identification device for vehicle using AC voltage with superimposed DC voltage

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100736107B1 (en) * 2005-07-14 2007-07-06 농업회사법인 주식회사 자연에 Manufacturing Method of Spiral Rice Cake Bar
KR101047557B1 (en) * 2008-11-27 2011-07-07 기아자동차주식회사 Passenger identification device for vehicle using AC voltage with superimposed DC voltage

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