WO2012094847A1 - Dispositif de développement basé sur un module d'affichage et appareil de formation d'image électrophotographique - Google Patents

Dispositif de développement basé sur un module d'affichage et appareil de formation d'image électrophotographique Download PDF

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Publication number
WO2012094847A1
WO2012094847A1 PCT/CN2011/071623 CN2011071623W WO2012094847A1 WO 2012094847 A1 WO2012094847 A1 WO 2012094847A1 CN 2011071623 W CN2011071623 W CN 2011071623W WO 2012094847 A1 WO2012094847 A1 WO 2012094847A1
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WO
WIPO (PCT)
Prior art keywords
display module
roller
developing device
image forming
forming apparatus
Prior art date
Application number
PCT/CN2011/071623
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English (en)
Chinese (zh)
Inventor
李华容
Original Assignee
Li Huarong
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Li Huarong filed Critical Li Huarong
Publication of WO2012094847A1 publication Critical patent/WO2012094847A1/fr

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Classifications

    • 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
    • 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
    • G03G2215/00953—Electrographic recording members
    • G03G2215/00957—Compositions
    • 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
    • G03G2215/04—Arrangements for exposing and producing an image

Definitions

  • the present invention relates to a developing device of an electrophotographic image forming apparatus and an electrophotographic image forming apparatus including the same, and more particularly to a developing device based on a display module and an electrophotographic image forming apparatus including the developing device.
  • an electrophotographic image forming apparatus At present, there are many different imaging technologies for recording digital data onto a photosensitive medium. After forming an image latent image corresponding to the digital data on the photosensitive medium, the image latent image is transferred to the printing medium by using electrophotographic technology. on.
  • a printing or printing apparatus suitable for this purpose is called an electrophotographic image forming apparatus.
  • the basic principle of an electrophotographic image forming apparatus is to convert an image or text data signal into an optical signal by an exposure apparatus, and then emit the light signal onto the photoreceptor, the photoreceptor
  • the photosensitive material on the photosensitive material forms a developed image by electrostatically forming an electrostatic latent image, and then the developing material adsorbed on the photoreceptor is transferred to a common printing medium by a transfer device, and other auxiliary components are It also includes power-dissipation, fixing, cleaning, and transmission.
  • the exposure device is divided into a laser scanning type exposure device and a print head type exposure device according to the beam scanning type and the beam scanning mode, and the head type exposure device is a laterally arranged light source along the photosensitive medium.
  • LED LED or OLED array
  • the light source of the laser scanning type exposure device is a high power laser diode, under the control of the printing signal, the laser tube The laser beam is emitted according to the printing requirement.
  • the laser beam After the laser beam is focused by the focusing lens, it is projected onto a high-speed rotating polygon mirror, and the polygon mirror rotates continuously to change the angle of the reflected laser beam to form a single-point beam with a position change.
  • a reciprocating scanning axial laser is formed on the photosensitive drum to expose the photosensitive drum.
  • the photosensitive drum rotates, and the laser beam continues to sensitize the next line. Thereby completing the photosensitive process of the photosensitive drum.
  • the LED (or OLED) type exposure device arranges thousands of tiny LED light-emitting diodes in a queue, placed in the axial direction of the photosensitive drum, and each physical resolution of the printer corresponds to one light-emitting diode, in the control of the printed signal. Next, some of the LED lights that need to be printed are lit, and the light generated by them is directly projected on the surface of the photosensitive drum through the focusing head, so that the photosensitive drum is exposed. After the single-line photosensitive is completed, the photosensitive drum rotates, and the LED light is re-pressed according to the printing requirement. The next line is sensitized to complete the photographic process.
  • the LED printing technology is slightly faster than the laser printing, and since there is no mechanical component, the failure rate of the light source portion of the LED printer is also compared with the laser scanning printer. Low, the life of the light source is also greatly increased. More importantly, the ordinary light of the light emitted by the LED does not ionize the air, does not generate ozone, and the volume of the whole machine is small, but the size of the LED light-emitting diode is difficult to be small. Therefore, the axial printing resolution of the LED is difficult to increase.
  • the above-mentioned developer includes carbon powder or charged ink.
  • the developer used in the above LED printer and laser printer is carbon powder, while the HP indigo digital printing machine uses electronic ink.
  • the HP indigo digital printing machine works as follows: First, the photoreceptor is charged with electricity, and then the laser head processes the dot matrix format of the color according to the raster image processor, and then discharges the laser beam on the photoreceptor, and then the color of the electronic ink is in the electric field force.
  • the image forming layer attached to the photoreceptor is formed to form an image layer, and the image layer is transferred to the blanket by the potential difference between the image forming roller and the blanket cylinder, and the electronic ink After heating on the blanket, it partially dissolves, is transferred to the substrate by pressure, and then solidifies and adheres to the substrate. Therefore, the exposure device of the HP indigo digital press is actually the same as the exposure principle of the laser printer, except that the developer used is different.
  • the exposure device and the photosensitive device of all current electrophotographic image forming apparatuses are separated, and the light source of the exposure device is either a laser or an array of LEDs (or OLEDs), which is located outside the photosensitive device, and can only be simultaneously
  • One row of the photosensitive device ie, a lateral array
  • the printing speed depends on the rotational speed of the photosensitive device and the exposure speed of the exposure device, so that the current electrophotographic imaging speed is not as fast as that of the industrial printing machine.
  • laser scanning type printers have problems such as high light source failure rate, large machine volume, harmful gases, and blurred edges of printed images, although LED (or OLED) array printers solve the above technical problems and print speeds.
  • the purpose of the present invention is to solve the above technical problems, and the present invention proposes a developing device based on a display module and an electrophotographic image forming apparatus including the same.
  • the present invention preferably uses a curled display module as a light source, the outer surface of the curled display module is circular, a transparent conductive layer is disposed outside the display module, and a photosensitive layer is disposed outside the transparent conductive layer.
  • the photosensitive area corresponding to the pixel is made conductive or not by the brightness or the extinction of each pixel of the display module, thereby forming an electrostatic latent image corresponding to the screen displayed on the display module on the developing device, and the display module
  • the picture displayed above corresponds to the image to be printed by the electrophotographic apparatus. With knot
  • the structure is simple, the cost is low, and the design is ingenious.
  • the present invention provides a developing device based on a display module, the device includes: a display module, an outer surface of the display module is used for display;
  • a controller for acquiring a control signal of the computer and controlling a display state of each pixel of the display module
  • the outer surface of the display module is provided with a transparent conductive layer made of a transparent conductive material, and a photosensitive layer made of a photosensitive material is disposed around the conductive layer;
  • a charging module for charging the photosensitive layer for charging the photosensitive layer.
  • the outer surface of the display module is cylindrical.
  • the display module is an OLED display module that is rolled into a cylindrical shape, and each pixel of the display module is an organic light emitting diode.
  • the charging module is a charging roller, and an outer surface of the charging roller is in contact with an outer surface of the photosensitive layer.
  • the developing device further includes a discharge lamp for totally exposing the photosensitive material of the photosensitive layer to cause the electric charge carried on the round roller to disappear.
  • a cylindrical optical element is also disposed between the display module and the conductive layer, and the cylindrical optical element is used to focus a light beam emitted from each pixel in the display module onto the photosensitive layer.
  • the cylindrical optical element is composed of a plurality of convex lenses of the same size and shape, and the number and shape of the convex lenses are respectively the same as the number and shape of the pixel points of the display module, and the convex lenses are arranged in a grid shape and a display module.
  • the grids formed by the arrangement of the pixels are the same in shape.
  • the computer's control signals are transmitted to the controller over a wireless link.
  • the utility model further provides an electrophotographic imaging device based on an explicit module, characterized in that
  • the electrophotographic image forming apparatus includes, in addition to the developing device as described above, a method further comprising:
  • a magnetic roller for adsorbing toner in the powder silo and transferring it to the photosensitive layer
  • a transfer rubber roller for transferring the carbon powder adsorbed on the photosensitive layer to the printing medium
  • One side of the magnetic roller is in contact with the toner in the powder bin, the other side is close to the photosensitive layer, the transfer rubber roller is close to the photosensitive layer, and the printing medium is located on the transfer roller and the photosensitive Between the layers, and in contact with the printing blanket, the voltage on the transfer roller is higher than the voltage on the photosensitive layer.
  • the electrophotographic image forming apparatus further includes a fixing device for melt-impregnating toner adhered to the printing medium into the printing medium, the fixing device including a heating lamp for heating the printing medium, and continuing to heat the printing medium
  • the heating roller is a pressure rubber roller that sandwiches the printing medium with the heating roller, and the heating lamp is located between the heating roller and the transfer rubber roller.
  • the electrophotographic image forming apparatus further includes a brush for removing excess toner.
  • the present invention also provides an electrophotographic image forming apparatus based on a display module, characterized in that, in addition to the developing device as described above, the electrophotographic image forming apparatus further comprises:
  • An ink cartridge for storing electronic ink a surface of the photosensitive layer is in contact with a surface of the ink cartridge, and a surface of the ink cartridge in contact with the photosensitive layer is infiltrated with an electronic ink;
  • a blanket rubber roller for transferring electronic ink adsorbed on a photosensitive layer onto a printing medium.
  • One side of the blanket rubber roller is in contact with the photosensitive layer, and the other side is in contact with one side of the printing medium, and the other side of the printing medium is in contact with a pressure roller.
  • the electrophotographic image forming apparatus further includes a doctor blade for removing excess electronic ink.
  • the utility model uses the display module as an exposure device, so that the one-time exposure area of the developing device The increase is greatly increased, so that the speed of the electrophotographic image forming apparatus at the time of printing or printing is greatly increased.
  • the utility model adopts a curled display module as a controllable light source, and a transparent conductive layer made of a transparent conductive material is disposed on the periphery of the circular display module, and a photosensitive layer is disposed on the periphery of the transparent conductive layer, so that the development is performed.
  • the device has the exposure function of an LED or a laser light source in a general LED printer or a laser printer, and has a photosensitive function similar to that of a photosensitive drum in a general LED printer or a laser printer, and the structure is greatly simplified, so that the volume of the electrophotographic image forming apparatus is greatly reduced. The cost has also been reduced.
  • the utility model utilizes the principle of self-luminescence of an organic light emitting diode in an OLED display module, and correspondingly displays a pattern displayed in the OLED display module with a pattern outputted onto the printing medium in the electrophotographic image forming apparatus, and each pixel in the OLED display module
  • the light on/off of the dot constitutes the pattern to be displayed by the OLED display module, so the exposure developing device of the present invention simplifies the control of the light source on/off of the exposure device of the LED printer or the laser printer, and the method is more advanced than the prior art. Simple, cheaper.
  • each pixel of the OLED display module corresponds to each of the photosensitive dots, and the OLED of each pixel of the OLED display module can be made smaller than the ordinary LED, the output image resolution is higher.
  • the utility model adopts a wireless manner to send a control signal to the OLED display module, thereby ensuring the electrophotographic imaging device of the utility model. Continuous work provides productivity.
  • the electrophotographic image forming apparatus of the present invention has a simple structure, low cost, small volume, high image forming efficiency, and enhanced performance and service life. [Details of the manual]
  • Figure 1 is a cross-sectional view of the developing device of the present invention perpendicular to the axis of rotation;
  • Figure 2 is a cross-sectional view of the round roller in the developing device of the present invention.
  • Figure 3 is an axial sectional view of the developing device of the present invention.
  • Figure 4 is a cross-sectional view of the electrophotographic image forming apparatus according to Embodiment 2 of the present invention, perpendicular to the rotation axis;
  • Figure 5 is a perspective view of an electrophotographic image forming apparatus in Embodiment 3 of the present invention.
  • the present invention relates to a developing device based on a display module and an electrophotographic image forming apparatus including the same.
  • the developing device includes: a display module, an outer surface of the display module is used for display; a controller for acquiring a control signal of the computer and controlling a display state of each pixel of the display module; an outer surface of the display module A transparent conductive layer made of a transparent conductive material is disposed, and a conductive layer made of a photosensitive material is disposed on the periphery of the conductive layer; and a charging module for charging the photosensitive layer.
  • a protective layer may be disposed outside the photosensitive layer, and the charging module can simultaneously charge the protective layer and the photosensitive layer.
  • the outer surface of the display module is provided in a curled shape to facilitate continuous operation of the electrophotographic image forming apparatus.
  • the curling display module comprises a plurality of types, wherein one display module uses an OLED (Organic Light Emitting Diode) as a light source, and a flexible material is used as a substrate, and is made into a OLED illuminator that can be controlled by the controller for each pixel. Or a flexible OLED display module, the OLED display module is rolled into a cylindrical shape, that is, formed into a curled display module, and the outer surface of the display module is circular for display Show.
  • the embodiment of the present invention uses the OLED display module as an embodiment to describe only the curled display module of the present invention. Other display modules having a circular surface and a circular surface for display can be used as the present invention.
  • a controllable light source of the developing device is used as a light source.
  • the embodiment provides a developing device 10, as shown in FIG. 1 - 2, the developing device 10 includes a cylindrical OLED display module 11 and a controller (not shown) connected to the OLED display module, the cylinder
  • the OLED display module is a black and white color display module, which adopts a flexible transparent material as a substrate and is made of an OLED (Organic Light Emitting Diode) as a light source.
  • the cylindrical OLED has a length of 22 cm and a diameter of 10 cm, and has a total of 1.727 million.
  • each pixel is an OLED illuminator
  • each pixel point has a dot pitch of 0.2 mm
  • each OLED illuminator can be individually turned on or off by the controller, and the controller acquires the computer wirelessly. Control signals and control the on/off of each pixel of the OLED display module.
  • the inner surface of the OLED display module is provided with a cylindrical bracket 12 for supporting and fixing the OLED display module 11, and the cylindrical bracket rotates around a central axis 13 when the cylindrical bracket 12 surrounds the center
  • the shaft 13 rotates
  • the OLED display module 11 is rotated, and two elastic pieces (not shown) of the OLED display module are in contact with two electrodes (not shown) on the rotating shaft for being used from the outside. Acquire power and power the OLED display module.
  • the periphery of the OLED display module 11 is sleeved with a cylindrical optical element 14 composed of a plurality of convex lenses 141 having the same shape and size, and the plurality of convex lenses 141 are closely and mutually
  • the number and shape of the convex lenses are the same as the number and shape of the pixel points of the OLED display module.
  • the convex lenses are arranged in a grid shape and have the same mesh shape as the pixel dots of the OLED display module.
  • a round roller 15 made of a transparent conductive material is further disposed on the periphery of the cylindrical optical component 14. The surface of the circular roller is electrically connected to the ground. The thickness of the circular roller is 2 mm.
  • the outer surface of the roller is coated with a layer of photosensitive material 151, the thin layer of photosensitive material coated on the surface of the round roller is a photosensitive layer, and the photosensitive material is further coated with a protective film 152, which is resistant to the protective film.
  • the abrasive material is made to prevent the photosensitive material from being worn, and the thin layer formed by the protective film is a protective layer.
  • the developing device 10 further includes a charging roller 16, which is in contact with an outer surface of the protective film for charging the photosensitive layer and the protective layer.
  • the developing device 10 further includes a discharge lamp 17, which is a group of LED arrays arranged in a line for fully exposing the photosensitive material on the round roller to make all photosensitive points of the photosensitive material conductive, thereby The charge on the round roll disappears.
  • a discharge lamp 17 which is a group of LED arrays arranged in a line for fully exposing the photosensitive material on the round roller to make all photosensitive points of the photosensitive material conductive, thereby The charge on the round roll disappears.
  • the photosensitive material on the round roller is electrically conductive at this time, and the round roller does not have a charge.
  • the roller is charged by the charging roller, the roller is charged.
  • any photosensitive spot on the round roller is not exposed, the photosensitive material is not conductive, and when the OLED display module displays a black and white image, the light emitted by the OLED displayed as a white pixel is irradiated to the photosensitive material through the transparent conductive material.
  • the photosensitive material When the photosensitive material is made conductive, the electric charge on the photosensitive spot corresponding to the luminescent pixel on the round roller disappears, so that the photosensitive point corresponding to the white pixel point does not have static electricity, and the corresponding photosensitive point on the black pixel point is electrostatically charged. Then, an electrostatic latent image corresponding to the black and white picture displayed by the OLED display module is formed on the surface of the round roller.
  • the embodiment provides an electrophotographic image forming apparatus, and the developer used in the electrophotographic image forming apparatus is carbon powder.
  • the image forming apparatus includes the developing device 10 as described in Embodiment 1, as shown in FIG. Also shown, it also includes:
  • the carbon powder and the iron powder are stirred in the powder silo, the carbon powder is negatively charged, and the round roller is positively charged after being charged by the charging roller, and the amount of charge on the round roller is larger than that of the carbon powder.
  • One side is in contact with the toner in the powder chamber, and the other side is in contact with the outer surface of the round roller, and the magnetic roller adsorbs the carbon powder mixed with the iron powder on the outer surface thereof, and rotates to a position opposite to the round roller.
  • the static electricity carried on the round roll adsorbs the carbon powder onto the round roll, so that the positively charged area on the round roll adsorbs the toner, and the uncharged area does not adsorb the toner, thus, A picture corresponding to the image output by the imaging device is displayed on the round roller.
  • the image forming apparatus further includes a transfer rubber roller 50 for transferring the toner adsorbed on the round roller to the printing medium, the transfer rubber roller being in close proximity to the round roller, the printing medium - the paper 60 being located at the rotation Between the printing roller and the round roller, and in contact with the printing rubber roller, the voltage on the transfer rubber roller is higher than the voltage on the roller, so that the carbon powder adsorbed on the roller is rotated to the transfer roller In contrast, the high voltage on the transfer roller adsorbs the toner onto the paper.
  • the image forming apparatus further includes a fixing device 70 for melt-impregnating toner adhered to the printing medium into the sheet, the fixing device 70 including a heat lamp 71 for heating the printing medium, and continuing to heat the printing medium
  • the heating roller 72 and the pressure rubber roller 73 sandwiching the paper together with the heating roller are located between the heating roller 72 and the transfer rubber roller 50.
  • the image forming apparatus further includes a brush 80 for removing excess toner remaining on the round roller, the brush being located between the fixing device 70 and the discharge lamp 17.
  • the present embodiment provides another electrophotographic image forming apparatus, wherein the developer used in the electrophotographic image forming apparatus is an electronic ink.
  • the image forming apparatus includes the developing device 10 as described in Embodiment 1, as shown in FIG. Also included:
  • one side of the rubber rubber roller is in contact with the round roller, and the other side is in contact with one side of the printing medium, the printing medium The other side is in contact with the pressure roller 93, which clamps the printing medium together with the blanket rubber roller, so that the electronic ink adsorbed by the blanket rubber roller from the round roller re-infiltrates into the paper and penetrates into the paper.
  • the electronic ink on the paper is heated and fixed to the paper.
  • the image forming apparatus further includes a doctor blade 94 for scraping off excess electronic ink, the doctor blade 94 being located between the blanket rubber roller 92 and the eraser lamp 17.
  • the doctor blade 94 is located between the blanket rubber roller 92 and the eraser lamp 17.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

L'invention porte sur un dispositif de développement basé sur un module d'affichage et sur un appareil de formation d'image électrophotographique comprenant le dispositif de développement. Le module d'affichage est une source de lumière pouvant être commandée. Une couche conductrice transparente réalisée en un matériau conducteur transparent est montée sur la périphérie de la surface externe circulaire du dispositif d'affichage. Une couche photosensible est montée sur la périphérie de la couche conductrice transparente. Le dispositif de développement peut présenter des fonctions identiques de la source de lumière à diodes électroluminescentes ou à laser dans une imprimante à diodes électroluminescentes ou une imprimante à laser commune, et il peut également fonctionner de façon similaire à un tambour photosensible d'une imprimante à diodes électroluminescentes ou d'une imprimante à laser commune. La présente invention a une structure simple, un petit volume et un faible coût. Un dispositif d'affichage incurvé joue le rôle de source de lumière, ce qui augmente une surface d'exposition unique et accélère la vitesse d'impression de l'appareil de formation d'image électrophotographique.
PCT/CN2011/071623 2011-01-13 2011-03-09 Dispositif de développement basé sur un module d'affichage et appareil de formation d'image électrophotographique WO2012094847A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201110007083.3 2011-01-13
CN2011100070833A CN102591169A (zh) 2011-01-13 2011-01-13 一种基于显示模块的显影装置以及电子照相成像设备

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WO2012094847A1 true WO2012094847A1 (fr) 2012-07-19

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JP2015185743A (ja) * 2014-03-25 2015-10-22 シャープ株式会社 光電変換素子

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CN106444317A (zh) * 2016-10-08 2017-02-22 中山市奔码打印耗材有限公司 一种透明感光鼓
CN108724704A (zh) * 2017-04-21 2018-11-02 北京德瑞工贸有限公司 一种基于Micro LED技术的光固化3D打印设备
CN113021892A (zh) * 2019-12-24 2021-06-25 源秩科技（上海）有限公司 一种光固化打印系统和方法

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CN101110882A (zh) * 2006-07-19 2008-01-23 株式会社东芝 图像形成装置和图像形成方法
JP2008151845A (ja) * 2006-12-14 2008-07-03 Canon Inc 画像形成装置
CN101261488A (zh) * 2008-04-03 2008-09-10 周小平 一种可导电清洁刮板及激光成像装置
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CN1145852A (zh) * 1996-07-21 1997-03-26 邵伟英 一种计算机直接制版方法和数字印刷机
CN101110882A (zh) * 2006-07-19 2008-01-23 株式会社东芝 图像形成装置和图像形成方法
JP2008151845A (ja) * 2006-12-14 2008-07-03 Canon Inc 画像形成装置
CN101261488A (zh) * 2008-04-03 2008-09-10 周小平 一种可导电清洁刮板及激光成像装置
CN201909947U (zh) * 2011-01-13 2011-07-27 李华容 一种基于显示模块的显影装置以及电子照相成像设备

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Publication number Priority date Publication date Assignee Title
JP2015185743A (ja) * 2014-03-25 2015-10-22 シャープ株式会社 光電変換素子

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