WO2013078975A1 - 处理盒及处理盒改装方法 - Google Patents

处理盒及处理盒改装方法 Download PDF

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Publication number
WO2013078975A1
WO2013078975A1 PCT/CN2012/085302 CN2012085302W WO2013078975A1 WO 2013078975 A1 WO2013078975 A1 WO 2013078975A1 CN 2012085302 W CN2012085302 W CN 2012085302W WO 2013078975 A1 WO2013078975 A1 WO 2013078975A1
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Prior art keywords
photosensitive drum
terminal
electrically connected
diode
developing device
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PCT/CN2012/085302
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English (en)
French (fr)
Inventor
周宏辉
杨晓锋
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珠海天威飞马打印耗材有限公司
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Publication of WO2013078975A1 publication Critical patent/WO2013078975A1/zh

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    • 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
    • G03G21/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
    • G03G21/18—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements using a processing cartridge, whereby the process cartridge comprises at least two image processing means in a single unit
    • G03G21/1839—Means for handling the process cartridge in the apparatus body
    • G03G21/1867—Means for handling the process cartridge in the apparatus body for electrically connecting the process cartridge to the apparatus, electrical connectors, power supply
    • 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
    • G03G21/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
    • G03G21/18—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements using a processing cartridge, whereby the process cartridge comprises at least two image processing means in a single unit
    • G03G21/1803—Arrangements or disposition of the complete process cartridge or parts thereof
    • G03G21/1814—Details of parts of process cartridge, e.g. for charging, transfer, cleaning, developing

Definitions

  • the present invention relates to a process cartridge for an electrophotographic image forming apparatus and a method of modifying the same.
  • the present invention is based on a Chinese patent application filed on Dec. 02, 2011, the application number of which is incorporated herein by reference.
  • An electrophotographic image forming apparatus is an apparatus for forming an image on a recording material by using an electrophotographic image forming principle, and includes an electrophotographic copying machine, an electrophotographic printer, an electrophotographic printing facsimile machine, and the like.
  • the process cartridge used in the electrophotographic image forming apparatus is a unit cartridge including at least a developing roller as a developing device and a photosensitive drum, which is detachably mounted in the main body of the electrophotographic image forming apparatus.
  • a typical electrophotographic image forming device is a laser printer.
  • Laser printer is one of the most widely used computer external output devices. It uses light, electricity, and thermal physics and chemistry to output text or images on media such as paper.
  • the basic working process of a laser printer can be divided into seven steps of charging, exposure, developing, transferring, fixing, cleaning, and discharging.
  • Fig. 1 is a schematic diagram showing the basic working principle of a laser printer, wherein the inner area of the dotted line is a process cartridge installed in a laser printer.
  • the surface of the photosensitive drum 1' is uniformly charged by the charging roller 2', and the laser scanner emits laser light modulated by the image information to the photosensitive drum 1', and forms an electrostatic latent image corresponding to the image to be printed on the surface of the photosensitive drum 1'.
  • the toner from the developing roller/magnetic roller 3' is adsorbed on the surface of the photosensitive drum 1' to convert the electrostatic latent image into a visible image, and the toner is on the surface of the photosensitive drum 1' as the photosensitive drum 1' rotates.
  • the formed visible image is transposed to the transfer roller 4'. Finally, under the action of the transfer voltage of the transfer roller 4', the visible image is transferred onto a recording medium such as paper, and the visible image on the recording medium is heated and pressurized by the heating roller and the pressure roller 5'. The visible image formed by the toner is completely cured on the recording medium, which is the basic imaging process of the laser printer.
  • the toner on the developing roller/magnetic roller 3' is supplied from the powder magazine 6', and the powder discharging blade 7' has a function of frictionally charging the carbon powder and controlling the thickness of the powder layer of the developing roller/magnetic roller 3', and the cleaning blade 8 'For scraping off the residual toner on the surface of the photosensitive drum 1', the residual toner falls into the waste toner box 9', and the charging roller 2' also has the effect of eliminating the residual potential of the surface of the photosensitive drum 1'.
  • the charging roller is composed of a metal shaft located at the innermost layer, a conductive sponge of the intermediate layer, and a semi-insulator of the surface layer.
  • the laser printer supplies a negative bias to the metal shaft of the charging roller, generally higher than -1200V, and the negative bias ionizes the air at the angle between the charging roller and the photosensitive drum contact line to make the photosensitive drum
  • the surface is evenly distributed and the voltage is higher than –600V.
  • Fig. 2 simply shows the state of electrification of the charging roller 2' and the photosensitive drum 1', wherein a charging bias is applied to the charging roller 2', and the photosensitive drum 1' is grounded.
  • FIG 3 shows the structure of the photosensitive drum.
  • the photosensitive drum of the cylindrical structure mainly forms a layer of organic photoconductive material on the outer surface of the aluminum cylinder, and includes CTL (Carrier) from the surface and the inside respectively.
  • Transport Lager) Layer and CGL (Carrier Geceration) Lager) layer also has an anodized layer (UCL), aluminum base.
  • the CTL layer is used to provide a thickness that allows the surface to receive a charge level of 500-1000 V and transport positive charges to the surface of the drum.
  • the CGL layer is used to generate an electron/vacancy pair after laser irradiation.
  • the anodized layer serves to prevent charge reflection, absorb laser light, allow negative charges to be introduced into the earth, and enhance anode oxidation resistance.
  • the aluminum base is used for grounding.
  • the laser beam carrying the digital signal is irradiated onto the surface of the charged photosensitive drum, and the CGL layer is irradiated with laser light to generate an electron/vacancy pair.
  • the negative charge is introduced into the earth through the UCL layer, and the vacancy is transmitted and sensitized through the CTL layer.
  • the negative charge portion of the drum surface is partially neutralized, so that the potential of the digital signal region on the surface of the photosensitive drum is lowered to form an "electrostatic latent image".
  • the main function of the developing roller/magnetic roller is to provide the photosensitive drum with toner that is sufficiently involved in development.
  • the exposed photosensitive drum carries an "electrostatic latent image” rotation.
  • the toner on the developing roller is under the action of the electric field force, and the carbon powder on the magnetic roller acts under the action of the electric field force and the magnetic field force. Partially transferred to the "electrostatic latent image” area to form a "toner image.”
  • the structure of the developing roller is composed of an iron shaft located at the innermost layer, a conductive sponge rubber material of the intermediate layer, and a semi-insulator of the surface layer.
  • the iron shaft acts to conduct current
  • the conductive sponge rubber material acts to transport electric charge.
  • the function of the semi-insulator is to carry the toner onto the photosensitive drum for development.
  • the structure of the magnetic roller comprises a developing sleeve, usually adopting an aluminum sleeve, a magnetic core installed in the aluminum sleeve, a magnetic core bracket installed at both ends of the aluminum sleeve, and the outer surface of the aluminum sleeve is covered with the surface of the conductive carbon black material. coating.
  • the function of the magnetic core is to adsorb the magnetic toner to the surface of the aluminum sleeve.
  • Aluminum sleeves are used for conducting and carrying surface coatings. The surface coating rubs against the toner to charge it.
  • One end of the developing roller/magnetic roller is connected to a conductive sheet for electrically connecting to an electrical contact in the laser printer, so that the laser printer can supply a developing bias to the developing roller/magnetic roller.
  • the developing bias output from the laser printer to the conductive sheet contains only a direct current component, and the direct current component is a voltage lower than 0 volt. See the developing bias waveform waveform outputted by the laser printer shown in FIG.
  • the toner does not jump between the developing roller and the photosensitive drum, so the toner is directly transferred to the surface of the photosensitive drum under the action of the electric field force.
  • This developing method consumes less toner and has a lower printing cost.
  • the development bias output from the laser printer to the conductive sheet contains the AC component and the DC component, see the AC bias after the AC/DC superimposition output from the laser printer shown in FIG. Waveform.
  • the alternating component in the developing bias causes the toner to bounce back and forth, so that the toner is charged more uniformly, and the direct current component in the developing bias is used to provide an electric field force so that the toner can sufficiently participate in development.
  • the toner at the edge of the development area easily travels to other places, which is disadvantageous for development, and the amount of toner consumed in the printing process is large, and the printing cost is high.
  • the laser printer has a structure that matches it depending on the development mode of the process cartridge.
  • the power supply module provided in the matching laser printer supplies the developing roller only to include the developing bias of the direct current component.
  • a power supply module provided in the matching laser printer supplies a developing bias of the developing roller/magnetic roller containing DC and AC components.
  • the main object of the present invention is to provide a process cartridge which can be used in a laser printer instead of a skip type development process cartridge;
  • Another object of the present invention is to provide a process cartridge retrofitting method for converting a development mode from skip development to contact development.
  • the present invention provides a process cartridge comprising a photosensitive drum, a developing device, a photosensitive drum grounded; the photosensitive drum and the developing device are in axial contact; and an electronic module including a diode and a cathode of the diode Connecting the first terminal, the first terminal is for receiving the power supply signal on the laser printer; a filter capacitor is electrically connected between the anode of the diode and the ground; a resistor and a voltage regulator connected in series with each other, the resistor The other end is electrically connected to the anode of the diode, and the other end of the Zener tube is grounded; the second terminal, the second terminal is electrically connected to the connection point between the resistor and the Zener tube, and the second terminal outputs a developing bias to the developing device. signal.
  • the developing device is a developing roller or a magnetic roller.
  • Another processing cartridge provided by the present invention comprises a photosensitive drum, a developing device, the photosensitive drum is grounded; the photosensitive drum and the developing device are in axial contact; and an electronic module includes a diode, and the cathode of the diode is electrically connected to the first wiring
  • the first terminal is for receiving a power supply signal on the laser printer; a filter capacitor is electrically connected between the anode and the third terminal of the diode, and the third terminal is electrically connected to the photosensitive drum;
  • a Zener tube the other end of the resistor is electrically connected to the anode of the diode, and the other end of the Zener tube is electrically connected to the third terminal; the second terminal, the connection point between the second terminal and the resistor and the Zener tube Connected, the second terminal outputs a developing bias signal to the developing device.
  • the grounding wire of the electronic module of the solution is changed to be electrically connected to the photosensitive drum. Since the photosensitive drum is grounded, the grounding wire of the electronic module can be directly electrically connected to the photosensitive drum.
  • the developing device is a developing roller or a magnetic roller.
  • the present invention provides a process cartridge modification method, the process cartridge comprising a photosensitive drum, a developing device, a photosensitive drum grounded, and a gap between the photosensitive drum and the developing device, the method comprising contacting the photosensitive drum with the developing device along an axis Setting an electronic module, the electronic module includes a diode, the cathode of the diode is electrically connected to the first terminal, the first terminal is for receiving a power supply signal on the laser printer; and a filter capacitor is electrically connected to the anode and the ground of the diode Between each other; a resistor connected in series with a Zener, the other end of the resistor is electrically connected to the anode of the diode, the other end of the Zener is grounded; the second terminal, the second terminal is connected between the resistor and the Zener The connection point is electrically connected, and the second terminal outputs a development bias signal to the developing device.
  • the electronic module includes a diode, the cathode of the diode is electrically
  • the developing device is a developing roller or a magnetic roller.
  • the invention further provides a process cartridge modification method, the process cartridge comprises a photosensitive drum, a developing device, the photosensitive drum is grounded, and a gap is formed between the photosensitive drum and the developing device, the method comprising contacting the photosensitive drum with the developing roller along an axis;
  • An electronic module the electronic module includes a diode, the cathode of the diode is electrically connected to the first terminal, the first terminal is for receiving a power supply signal on the laser printer; a filter capacitor is electrically connected to the anode and the third wire of the diode Between the ends, the third terminal is electrically connected to the photosensitive drum; a resistor and a Zener tube are connected in series with each other, the other end of the resistor is electrically connected to the anode of the diode, and the other end of the Zener tube is electrically connected to the third terminal; the second wiring The second terminal is electrically connected to a connection point between the resistor and the Zener tube, and the second terminal outputs a development bias signal to the
  • the developing device is a developing roller or a magnetic roller.
  • the process cartridge provided by the invention can reduce the printing cost under the premise that the printing effect is ideal.
  • the modification method of the invention can finally realize the printing effect of the contact development and reduce the printing cost.
  • 1 is a structural diagram of a basic printing principle of a laser printer
  • FIG. 2 is a schematic view showing an electric signal charged on a charging roller and a photosensitive drum in a process cartridge during printing;
  • Figure 3 is a schematic structural view of a photosensitive drum
  • Figure 4 is a waveform diagram of a developing bias of a laser printer supply process cartridge in a contact type developing mode
  • Figure 5 is a waveform diagram of a developing bias of a printer supply process cartridge in the skip development mode
  • Figure 6 is a structural view showing an electronic module in the first embodiment of the process cartridge of the present invention.
  • Figure 7 is a waveform diagram of a developing bias voltage rectified by a developing bias of a jump developing provided by a laser printer in the first embodiment of the process cartridge;
  • Figure 8 is a structural view of an electronic module in a second embodiment of the process cartridge.
  • the processing cartridge includes a powder silo, a powder discharging blade, a developing roller, a photosensitive drum, a charging roller, a cleaning blade, a waste toner cartridge, and the like, wherein the developing roller and the photosensitive drum are in contact with each other along the axis, and the photosensitive drum is grounded.
  • An electronic module is also disposed in the process cartridge.
  • FIG. 6 there is shown a structural view of an electronic module of the process cartridge of the embodiment.
  • the electronic module includes a device such as a diode D, a filter capacitor C, a resistor R, and a Zener diode ZD.
  • the electronic module has two terminals T1, T2 and a ground GND.
  • the terminal T1 is electrically connected to the power module of the laser printer, and receives the developing bias electric signal containing the alternating current component and the direct current component provided by the laser printer to the process cartridge.
  • the developing bias electrical signal output by the laser printer can be seen in FIG. .
  • a filter capacitor C connected between the anode of the diode and the ground is used to filter the electrical signal to ensure that the waveform of the DC signal output after rectification is stable.
  • the terminal T2 is electrically connected to the developing roller, and the waveform of the voltage signal at the terminal T2 is shown in FIG. 4. Therefore, the developing bias applied to the developing roller is a constant negative DC voltage, and the developing roller and the photosensitive drum are in contact with each other along the axis. Contact development is possible.
  • the process cartridge of the present embodiment can be mounted in a laser printer originally equipped with a jump development work process cartridge, and the development bias of the AC and DC power supplied from the laser printer to the process cartridge can be changed to a negative DC development bias by the electronic module.
  • the process cartridge of the embodiment operates in a contact development mode to improve print quality.
  • the processing cartridge includes a powder silo, a powder discharging blade, a developing roller, a photosensitive drum, a charging roller, a cleaning blade, a waste toner cartridge, and the like, wherein the developing roller and the photosensitive drum are in contact with each other along the axis, and the photosensitive drum is grounded.
  • An electronic module is also disposed in the process cartridge.
  • FIG. 8 there is shown a structural view of an electronic module of the process cartridge of the embodiment.
  • the difference between the embodiment and the first embodiment is that the ground terminal GND of the electronic module in the first embodiment becomes the third terminal T3 of the embodiment.
  • the third terminal T3 of the embodiment is electrically connected to the photosensitive drum. Since the photosensitive drum is grounded, the third terminal T3 of the embodiment is still grounded, but is grounded through the photosensitive drum.
  • the working principle of this embodiment is the same as that of the first embodiment. For the description of the first embodiment, refer to the description of the first embodiment.
  • a non-magnetic jumping type developing process cartridge comprises a photosensitive drum, a developing roller, a photosensitive drum grounded, a gap between the photosensitive drum and the developing roller, and a powder bin, a powder scraping blade and the like.
  • the photosensitive drum and the developing roller are changed to be in contact with each other along the axis, that is, the center distance between the photosensitive drum and the developing roller which originally have a certain gap is adjusted to be small, so that there is no gap, and the fixing position of the photosensitive drum and the developing roller can be adjusted. ;
  • An electronic module is added in the process box, and the structure of the electronic module is the structure of the electronic module described in Embodiment 1 or Embodiment 2 of the above process cartridge. Disconnect the circuit between the contact in the original process box for electrically connecting to the printer power supply and the developing roller, connect the terminal T1 of the electronic module to the contact, the terminal T2 to the developing roller, and T3 to ground. The contacts are connected directly to the drum.
  • the modified process cartridge is installed in a laser printer that should be equipped with a jump development process cartridge, and the laser printer supply process cartridge contains a development bias signal of an alternating current component and a direct current component, and the development bias signal is outputted through the electronic module.
  • the developing bias of the direct current is applied to the developing roller, and the developing roller is brought into contact with the photosensitive drum along the axis, thereby realizing the working mode of the contact developing.
  • Contact development is ideal for printing and improves print quality.
  • a structure of a magnetic jumping type developing process cartridge comprises a photosensitive drum, a magnetic roller, a grounding of the photosensitive drum, a gap between the photosensitive drum and the magnetic roller, and a powder magazine, a powder discharging blade and the like.
  • the photosensitive drum and the magnetic roller are changed to be in contact with the axis, that is, the center distance between the photosensitive drum and the magnetic roller which originally have a certain gap is adjusted to be small, so that there is no gap, and the fixing position of the photosensitive drum and the magnetic roller can be adjusted. ;
  • the surface of the magnetic roller is relatively hard, the surface of the magnetic roller can be changed into a protective layer made of a certain elastic material, so that it is not easy to wear when it is in contact with the photosensitive drum;
  • An electronic module is added in the process box, and the structure of the electronic module is the structure of the electronic module described in the first embodiment of the process cartridge or the second embodiment of the process cartridge.
  • Disconnect the circuit between the contact and the magnetic roller used in the original processing box for electrically connecting to the printer power supply connect the terminal T1 of the electronic module to the contact, the terminal T2 to the developing roller, and T3 to ground.
  • the contacts are connected directly to the drum.
  • the modified process cartridge is installed in a laser printer that should be equipped with a jump development process cartridge, and the laser printer supply process cartridge contains a development bias signal of an alternating current component and a direct current component, and the development bias signal is outputted through the electronic module.
  • the developing bias of the direct current is applied to the magnetic roller, and the magnetic roller is in contact with the photosensitive drum along the axis, thereby realizing the working mode of the contact development.
  • the modified process cartridge is filled with non-magnetic carbon powder as a printing consumable, which can realize the printing effect of the contact development and improve the printing quality.
  • the magnetic roller is a magnetic roller for removing the magnetic core
  • the magnetic roller for removing the magnetic core can also be made of magnetic toner. Printing, still achieving a contact printing effect, these changes should also be included in the scope of protection of the claims of the present invention.
  • the diode of the electronic module rectifies the developing bias voltage containing the alternating current component to contain only the direct current component, and the filter capacitor further ensures that the waveform of the electric signal of the direct current component is stable, and then the voltage regulator function of the Zener diode The output voltage is made constant, thereby realizing rectification of the developing bias voltage provided by the laser printer containing the AC and DC components into a developing bias having a constant negative value, and feeding it to the developing device for contact development.
  • the modification method of the invention can install the process cartridge of the contact development process instead of the skip development process cartridge into the laser printer, and can also modify the process cartridge of the skip development to replace the jump development process cartridge to the laser In the printer.

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  • Engineering & Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electrophotography Configuration And Component (AREA)
  • Developing For Electrophotography (AREA)
  • Dry Development In Electrophotography (AREA)

Abstract

一种处理盒及处理盒改装方法，处理盒的感光鼓和显影器件沿轴向接触，且处理盒内设置一电子模块，电子模块包括一个二极管（D），二极管的阴极电连接第一接线端（T1），第一接线端（T1）用于接收激光打印机上的供电信号；一个滤波电容（C），滤波电容（C）电连接在二极管（D）的阳极和地之间；相互串联的一个电阻（R）和一个稳压管（ZD），电阻（R）的另一端电连接二极管（D）的阳极，稳压管（ZD）的另一端接地；第二接线端（T2），第二接线端（T2）与电阻和稳压管之间的连接点电连接，第二接线端（T2）向所述显影器件输出显影偏压信号。

Description

处理盒及处理盒改装方法
本发明涉及一种用于电子照相成像设备的处理盒及其改装方法。本发明基于申请日为2011年12月02日、申请号为201110396309.3的中国发明专利申请，该申请的内容作为与本发明密切相关的参考文献引入本文。
电子照相成像设备是一种利用电子照相成像原理在记录材料上形成图像的设备，它包括电子照相复印机，电子照相打印机，电子照相打印的传真机等。电子照相成像设备中使用的处理盒，是一个至少包括作为显影装置的显影辊和感光鼓的单元盒，其以可拆卸的方式安装在电子照相成像设备的主体中。
一个典型的电子照相成像设备是激光打印机，激光打印机是目前应用最广泛的计算机外部输出设备之一，它利用光、电、热的物理、化学原理在纸张等介质上输出文字或图像。激光打印机的基本工作过程可分为充电、曝光、显影、转印、定影、清洁、消电七个步骤。
参见图1，图1为反映激光打印机基本工作原理的示意图，其中虚线内区域即为安装在激光打印机中的处理盒。首先，感光鼓1’表面由充电辊2’均匀地充电，激光扫描器向感光鼓1’发射含有图像信息经过调制的激光，在感光鼓1’表面形成与待打印图像对应的静电潜像。然后，来自显影辊/磁辊3’的碳粉转而吸附在感光鼓1’表面上使静电潜像转换成可视图像，随着感光鼓1’的旋转，碳粉在感光鼓1’表面形成的可视图像换位至转印辊4’。最后，在转印辊4’转印电压的作用下，可视图像转印至纸张等记录介质上，经过加热辊、加压辊5’对记录介质上的可视图像的加热、加压，碳粉形成的可视图像完全固化于记录介质上，这就是激光打印机的基本成像过程。其中，显影辊/磁辊3’上的碳粉由粉仓6’提供，出粉刮刀7’具有使碳粉摩擦带电和控制显影辊/磁辊3’的粉层厚度的作用，清洁刮刀8’用于将感光鼓1’表面上的残余碳粉刮掉，残余碳粉落入废粉仓9’，充电辊2’还具有消除感光鼓1’表面残余电位的作用。
充电辊由位于最内层的金属轴、中间层的导电海绵和表层的半绝缘体构成。处理盒安装到激光打印机中使用时，激光打印机供给充电辊的金属轴负偏压，一般高于-1200V，负偏压使得在充电辊与感光鼓接触线夹角区域的空气电离，使感光鼓表面均匀布电，电压高于–600V。
参见图2，图2简单地示出了充电辊2’及感光鼓1’的接电状况，其中充电辊2’上加载充电偏压，感光鼓1’接地线。
参见图3，图3示出了感光鼓的结构。筒状结构的感光鼓主要是在铝质筒体外表面形成多层有机光导材料层，由表及里分别包括CTL（Carrier Transport Lager）层和CGL(Carrier Geceration Lager)层，还有阳极处理层（UCL）、铝基。CTL层用于提供一定的厚度，使表面能收到500-1000V电荷水平，运输正电荷到感光鼓表面。CGL层用于在激光照射后，产生电子/空缺对。阳极处理层用于防止电荷反射、吸收激光、允许负电荷导入大地、增强阳极抗氧化性。铝基用于接地。
在曝光过程中，携带数字信号的激光束，照射到被充电的感光鼓表面，CGL层接受激光照射后，产生电子/空缺对，负电荷通过UCL层导入大地，空缺通过CTL层的传输与感光鼓表面的负电荷部分中和，使得感光鼓表面数字信号区域的电位下降，形成“静电潜像”。
显影辊/磁辊的主要作用是为感光鼓提供足够参与显影的碳粉。曝光后的感光鼓携带“静电潜像”旋转，经过显影辊/磁辊时，显影辊上的碳粉在电场力的作用下，磁辊上的碳粉在电场力和磁场力的同时作用下，部分转移到“静电潜像”区域，形成“碳粉像”。
显影辊的结构是由位于最内层的铁轴、中间层的导电海绵橡胶物质和表层的半绝缘体构成。铁轴起传导电流的作用，导电海绵橡胶物质起传输电荷的作用，半绝缘体的作用是将碳粉运载到感光鼓上参与显影。
磁辊的结构包括一个显影套筒，通常采用铝套筒，安装在铝套筒内的磁芯，安装在铝套筒两端的磁芯支架，铝套筒外表面覆有导电炭黑材料的表面涂层。磁芯的作用是吸附带有磁性的碳粉，使其附着与铝套筒的表面。铝套筒用于导电及承载表面涂层。表面涂层与碳粉摩擦使其带电。
显影辊/磁辊的一端部连接一导电片，导电片用于与激光打印机内的电触点电连接，从而激光打印机可向显影辊/磁辊提供一个显影偏压。
在接触式显影方式中，显影辊与感光鼓之间没有空隙，相互接触。激光打印机向导电片输出的显影偏压只包含直流分量，且该直流分量为低于0伏的电压,参见图4所示的激光打印机所输出的显影偏压波形图。这样，碳粉不会在显影辊与感光鼓之间跳动，因此碳粉在电场力的作用下直接转移至感光鼓的表面，这种显影方式消耗的碳粉量较小，打印成本较低。
在非磁性跳跃式显影中，显影辊与感光鼓之间存在一定空隙，一般约15—22um，两者间不接触，带有电性的碳粉参与显影要跳跃到感光鼓上去。在磁性跳跃式显影中，磁辊和感光鼓之间存在一定空隙，一般约26—36um，两者间不接触，同时带有磁性和电性的碳粉参与显影要跳跃到感光鼓上去。无论是非磁性跳跃式显影还是磁性跳跃式显影，激光打印机向导电片输出的显影偏压均包含有交流分量以及直流分量，参见图5所示的激光打印机所输出的交直流叠加后的显影偏压的波形图。显影偏压中的交流分量使得碳粉来回跳动，使得碳粉带电更加均匀，显影偏压中的直流分量用于提供电场力，使碳粉能充分地参与显影。这种显影方式中，显影区域边缘处的碳粉容易跑到其他地方，不利于显影，而且打印过程中消耗的碳粉量较大，打印成本较高。
通常，根据处理盒的显影方式的不同，激光打印机具有与之匹配的结构。对于接触式显影方式的处理盒，与之匹配的激光打印机内所设置的电源模块供给显影辊只包含有直流分量的显影偏压。对于跳跃式显影方式的处理盒，与之匹配的激光打印机内所设置的电源模块供给显影辊/磁辊的包含有直流和交流分量的显影偏压。
本发明的主要目的是提供一种可替代跳跃式显影处理盒安装在激光打印机中使用的处理盒；
本发明的另一目的是提供一种将显影方式由跳跃式显影改装为接触式显影的处理盒改装方法。
为实现上述的主要目的，本发明提供的处理盒包括感光鼓、显影器件，感光鼓接地；感光鼓和显影器件沿轴向接触；还有一个电子模块，电子模块包括一个二极管，二极管的阴极电连接第一接线端，第一接线端用于接收激光打印机上的供电信号；一个滤波电容，滤波电容电连接在二极管的阳极和地之间；相互串联的一个电阻和一个稳压管，电阻的另一端电连接二极管的阳极，稳压管的另一端接地；第二接线端，第二接线端与电阻和稳压管之间的连接点电连接，第二接线端向显影器件输出显影偏压信号。
一个具体的方案是，显影器件是显影辊或磁辊。
本发明提供的另一种处理盒包括感光鼓、显影器件，感光鼓接地；感光鼓和显影器件沿轴向接触；还有一个电子模块，电子模块包括一个二极管，二极管的阴极电连接第一接线端，第一接线端用于接收激光打印机上的供电信号；一个滤波电容，滤波电容电连接在二极管的阳极和第三接线端之间，第三接线端电连接感光鼓；相互串联的一个电阻和一个稳压管，电阻的另一端电连接二极管的阳极，稳压管的另一端电连接第三接线端；第二接线端，第二接线端与电阻和稳压管之间的连接点电连接，第二接线端向显影器件输出显影偏压信号。
较上一方案而言，本方案的电子模块的接地线改成了电连接感光鼓，因感光鼓是接地的，所以电子模块的接地线可直接电连接感光鼓。
一个具体的方案是，显影器件是显影辊或磁辊。
为实现另一目的，本发明提供了处理盒改装方法，处理盒包括感光鼓、显影器件，感光鼓接地，感光鼓与显影器件之间有一间隙，该方法包括将感光鼓与显影器件沿轴线接触；设置一个电子模块，电子模块包括一个二极管，二极管的阴极电连接第一接线端，第一接线端用于接收激光打印机上的供电信号；一个滤波电容，滤波电容电连接在二极管的阳极和地之间；相互串联的一个电阻和一个稳压管，电阻的另一端电连接二极管的阳极，稳压管的另一端接地；第二接线端，第二接线端与电阻和稳压管之间的连接点电连接，第二接线端向显影器件输出显影偏压信号。
一个具体的方案是，显影器件是显影辊或磁辊。
本发明还提供的另一种处理盒改装方法，处理盒包括感光鼓、显影器件，感光鼓接地，感光鼓与显影器件之间有一间隙，该方法包括将感光鼓与显影辊沿轴线接触；设置一个电子模块，电子模块包括一个二极管，二极管的阴极电连接第一接线端，第一接线端用于接收激光打印机上的供电信号；一个滤波电容，滤波电容电连接在二极管的阳极和第三接线端之间，第三接线端电连接感光鼓；相互串联的一个电阻和一个稳压管，电阻的另一端电连接二极管的阳极，稳压管的另一端电连接第三接线端；第二接线端，第二接线端与电阻和稳压管之间的连接点电连接，第二接线端向显影器件输出显影偏压信号。
一个具体的方案是，显影器件是显影辊或磁辊。
本发明提供的处理盒，可使得在打印效果理想的前提下降低了打印成本。
本发明的改装方法，可最终实现接触式显影的打印效果，降低了打印成本。
图1是激光打印机基本打印原理结构图；
图2是打印过程中处理盒内充电辊和感光鼓上加载电信号的示意图；
图3是感光鼓的结构示意图；
图4是接触式显影方式中激光打印机供给处理盒的显影偏压的波形图；
图5是跳跃式显影方式中打印机供给处理盒的显影偏压的波形图；
图6是本发明处理盒第一实施例中电子模块的结构图；
图7是处理盒第一实施例中，二极管对激光打印机所提供的跳跃显影的显影偏压整流后的显影偏压的波形图；
图8是处理盒第二实施例中电子模块的结构图。
以下结合附图及各实施例对本发明作进一步说明。
处理盒实施例一
处理盒，包括粉仓、出粉刮刀、显影辊、感光鼓、充电辊、清洁刮刀、废粉仓等，其中显影辊和感光鼓沿轴线接触，感光鼓接地。在处理盒内还设置有一电子模块。
参见图6，示出了本实施例处理盒的电子模块的结构图。
电子模块包括二极管D、滤波电容C、电阻R、稳压管ZD这些器件。电子模块具有两个接线端T1、T2，以及一个接地端GND。
接线端T1用于与激光打印机的电源模块电连接，接收激光打印机提供给处理盒的含有交流分量和直流分量的显影偏压电信号，激光打印机输出的显影偏压电信号可参见图5所示。
接线端T1接收的激光打印机输出的显影偏压电信号经过二极管D后，由于二极管D的阴极与接线端T1电连接，因此显影偏压电信号中的直流电能够通过二极管D，交流分量中的正半周不能通过二极管D，但负半周能够通过二极管D，因此二极管D阳极输出的信号为低于0伏的直流电，参见图7所示。
连接在二极管阳极和地之间的滤波电容C，用于对电信号进行滤波，确保整流后输出的直流信号电压波形平稳。还有一稳压二极管ZD，稳压二极管ZD与电阻R串联连接，然后连接于二极管D与地之间。稳压二极管ZD能够确保二极管D阳极的电压稳定。
接线端T2与显影辊电连接，接线端T2处的电压信号波形参见图4，所以，加载到显影辊上的显影偏压为恒定的负直流的电压，又显影辊与感光鼓沿轴线接触，可进行接触式显影。
可以将本实施例的处理盒安装到原本安装跳跃式显影工作处理盒的激光打印机中，利用电子模块将激光打印机供给处理盒的交直流的显影偏压变成负直流的显影偏压，使本实施例的处理盒以接触式显影方式进行工作，提高打印品质。
处理盒实施例二
处理盒，包括粉仓、出粉刮刀、显影辊、感光鼓、充电辊、清洁刮刀、废粉仓等，其中显影辊和感光鼓沿轴线接触，感光鼓接地。在处理盒内还设置有一电子模块。
参见图8，图8示出了本实施例处理盒的电子模块的结构图。
本实施例与上述实施例一的区别仅在于：实施例一中电子模块的接地端GND成为本实施例的第三接线端T3。本实施例的第三接线端T3与感光鼓电连接，因感光鼓接地，所以，实际上本实施例的第三接线T3端仍然是接地，只不过是通过感光鼓接地。本实施例的工作原理与实施例一相同，可参见对实施例一的说明。
处理盒改装方法实施例一
一种非磁性跳跃式显影的处理盒的结构，包括感光鼓、显影辊，感光鼓接地，感光鼓和显影辊之间有一间隙，还包括粉仓、出粉刮刀等。
针对上述非磁性跳跃式显影的处理盒的改装方法如下：
将感光鼓和显影辊改为沿轴线接触，即将原本有一定间隙的感光鼓和显影辊之间的中心距调小，使其无间隙，可通过调整感光鼓和显影辊的安装定位件来实现；
在处理盒内增设一个电子模块，电子模块的结构如上述处理盒实施例一或者实施例二中所述的电子模块的结构。将原本处理盒内用于与打印机供电电源电连接的触点与显影辊之间的电路断开，将电子模块的接线端T1连接在触点上，接线端T2连接显影辊，T3设为接地触点或直接与感光鼓连接。
如此，该改装后的处理盒安装在原本应该安装跳跃式显影处理盒的激光打印机中，激光打印机供给处理盒含有交流分量和直流分量的显影偏压信号，该显影偏压信号经过电子模块输出负直流的显影偏压并加载在显影辊上，又因为显影辊与感光鼓沿轴线接触，从而，实现接触式显影的工作方式。接触式显影的打印效果理想，提高了打印品质。
处理盒改装方法实施例二
一种磁性跳跃式显影的处理盒的结构，包括感光鼓、磁辊，感光鼓接地，感光鼓和磁辊之间有一间隙，还包括粉仓、出粉刮刀等。
针对上述磁性跳跃式显影的处理盒的改装方法如下：
将感光鼓和磁辊改为沿轴线接触，即将原本有一定间隙的感光鼓和磁辊之间的中心距调小，使其无间隙，可通过调整感光鼓和磁辊的安装定位件来实现；
另外，由于磁辊表面较硬，可将磁辊表面改制成具有一定弹性材料制作的保护层，使其与感光鼓接触时，不易磨损；
在处理盒内增设一电子模块，电子模块的结构如上述处理盒实施例一或者处理盒实施例二中所述的电子模块的结构。将原本处理盒内用于与打印机供电电源电连接的触点与磁辊之间的电路断开，将电子模块的接线端T1连接在触点上，接线端T2连接显影辊，T3设为接地触点或直接与感光鼓连接。
如此，该改装后的处理盒安装在原本应该安装跳跃式显影处理盒的激光打印机中，激光打印机供给处理盒含有交流分量和直流分量的显影偏压信号，该显影偏压信号经过电子模块输出负直流的显影偏压并加载在磁辊上，且磁辊与感光鼓沿轴线接触，从而，实现接触式显影的工作方式。本实施例改装后处理盒盛装非磁性碳粉作为打印耗材，可实现接触式显影的打印效果，提高了打印品质。
当然，上述处理盒的改装方法还可以是针对接触式显影的处理盒进行的改装，只需要在接触式的处理盒内增设如处理盒实施例一或者处理盒实施例二中所述的电子模块，该电子模块用于将激光打印机提供给处理盒含有交流分量和直流分量的显影偏压变成负直流的显影偏压，即可实现接触式显影的工作方式。
最后需要强调的是，本发明不限于上述实施方式，如处理盒改装方法实施例二中磁辊为去除磁芯的磁辊，采用去除磁芯的磁辊还可使用带有磁性的碳粉进行打印，仍然实现接触式的打印效果，这些变化也应该包括在本发明权利要求的保护范围内。
本发明提供的处理盒，电子模块的二极管将含有交流分量的显影偏压整流成只含有直流分量，而滤波电容进一步保证该直流分量的电信号的波形平稳，再通过稳压管的稳压作用，使得输出的电压恒定，从而实现了将激光打印机提供的含有交、直流分量的显影偏压整流为具有恒定负值的显影偏压，并输送给显影器件，以进行接触式显影。
本发明的改装方法，可将接触式显影的处理盒改装后替代跳跃式显影的处理盒安装到激光打印机中，还可将跳跃式显影的处理盒改装后替代跳跃式显影的处理盒安装到激光打印机中。

Claims (8)

  1. 处理盒，包括
    感光鼓、显影器件，所述感光鼓接地；
    其特征在于：
    所述感光鼓和所述显影器件沿轴向接触；
    还有一个电子模块，所述电子模块包括
    一个二极管，所述二极管的阴极电连接第一接线端，所述第一接线端用于接收激光打印机上的供电信号；
    一个滤波电容，所述滤波电容电连接在所述二极管的阳极和地之间；
    相互串联的一个电阻和一个稳压管，所述电阻的另一端电连接所述二极管的阳极，所述稳压管的另一端接地；
    第二接线端，所述第二接线端与所述电阻和所述稳压管之间的连接点电连接，所述第二接线端向所述显影器件输出显影偏压信号。
  2. 根据权利要求1所述的处理盒，其特征在于：
    所述显影器件是显影辊或磁辊。
  3. 处理盒，包括
    感光鼓、显影器件，所述感光鼓接地；
    其特征在于：
    所述感光鼓和所述显影器件沿轴向接触；
    还有一个电子模块，所述电子模块包括
    一个二极管，所述二极管的阴极电连接第一接线端，所述第一接线端用于接收所述激光打印机上的供电信号；
    一个滤波电容，所述滤波电容电连接在所述二极管的阳极和第三接线端之间，所述第三接线端电连接所述感光鼓；
    相互串联的一个电阻和一个稳压管，所述电阻的另一端电连接所述二极管的阳极，所述稳压管的另一端电连接所述第三接线端；
    第二接线端，所述第二接线端与所述电阻和所述稳压管之间的连接点电连接，所述第二接线端向所述显影器件输出显影偏压信号。
  4. 根据权利要求3所述的处理盒，其特征在于：
    所述显影器件是显影辊或磁辊。
  5. 处理盒改装方法，所述处理盒包括感光鼓、显影器件，所述感光鼓接地；
    所述感光鼓与所述显影器件之间有一间隙；
    其特征在于：该方法包括
    将所述感光鼓与所述显影器件沿轴线接触；
    设置一个电子模块，所述电子模块包括
    一个二极管，所述二极管的阴极电连接第一接线端，所述第一接线端用于接收激光打印机上的供电信号；
    一个滤波电容，所述滤波电容电连接在二极管的阳极和地之间；
    相互串联的一个电阻和一个稳压管，所述电阻的另一端电连接所述二极管的阳极，所述稳压管的另一端接地；
    第二接线端，所述第二接线端与所述电阻和所述稳压管之间的连接点电连接，所述第二接线端向所述显影器件输出显影偏压信号。
  6. 根据权利要求5所述的处理盒改装方法，其特征在于：
    所述显影器件是显影辊或磁辊。
  7. 处理盒改装方法，所述处理盒包括感光鼓、显影器件，所述感光鼓接地；
    所述感光鼓与所述显影器件之间有一间隙；
    其特征在于：该方法包括
    将所述感光鼓与所述显影器件沿轴线接触；
    还有一个电子模块，所述电子模块包括
    一个二极管，所述二极管的阴极电连接第一接线端，所述第一接线端用于接收所述激光打印机上的供电信号；
    一个滤波电容，所述滤波电容电连接在所述二极管的阳极和第三接线端之间，所述第三接线端电连接所述感光鼓；
    相互串联的一个电阻和一个稳压管，所述电阻的另一端电连接所述二极管的阳极，所述稳压管的另一端电连接所述第三接线端；
    第二接线端，所述第二接线端与所述电阻和所述稳压管之间的连接点电连接，所述第二接线端向所述显影器件输出显影偏压信号。
  8. 根据权利要求7所述的处理盒改装方法，其特征在于：
    所述显影器件是显影辊或磁辊。
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CN102411297A (zh) * 2011-12-02 2012-04-11 珠海天威飞马打印耗材有限公司 处理盒及处理盒改装方法
CN103116259B (zh) * 2012-12-28 2014-09-10 珠海天威飞马打印耗材有限公司 处理盒及处理盒改装方法

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CN1523458A (zh) * 2003-02-20 2004-08-25 ���ǵ�����ʽ���� 处理盒和成像装置
CN1573602A (zh) * 2003-06-17 2005-02-02 佳能株式会社 显影设备
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CN102411297A (zh) * 2011-12-02 2012-04-11 珠海天威飞马打印耗材有限公司 处理盒及处理盒改装方法

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CN102141769A (zh) * 2011-04-19 2011-08-03 珠海天威飞马打印耗材有限公司 激光打印机用处理盒

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CN1573602A (zh) * 2003-06-17 2005-02-02 佳能株式会社 显影设备
JP2009163006A (ja) * 2008-01-07 2009-07-23 Brother Ind Ltd 画像形成装置
CN201402372Y (zh) * 2009-03-27 2010-02-10 珠海天威飞马打印耗材有限公司 处理盒
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