WO2014101603A1 - 激光打印机用处理盒 - Google Patents

激光打印机用处理盒 Download PDF

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Publication number
WO2014101603A1
WO2014101603A1 PCT/CN2013/087762 CN2013087762W WO2014101603A1 WO 2014101603 A1 WO2014101603 A1 WO 2014101603A1 CN 2013087762 W CN2013087762 W CN 2013087762W WO 2014101603 A1 WO2014101603 A1 WO 2014101603A1
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Prior art keywords
developing roller
process cartridge
laser printer
photosensitive drum
roller
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PCT/CN2013/087762
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English (en)
French (fr)
Inventor
邓春华
朱小磊
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珠海天威飞马打印耗材有限公司
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Publication of WO2014101603A1 publication Critical patent/WO2014101603A1/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
    • G03G21/1803—Arrangements or disposition of the complete process cartridge or parts thereof
    • G03G21/181—Manufacturing or assembling, recycling, reuse, transportation, packaging or storage
    • 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
    • G03G21/1828—Prevention of damage or soiling, e.g. mechanical abrasion
    • G03G21/1832—Shielding members, shutter, e.g. light, heat shielding, prevention of toner scattering

Definitions

  • the present invention relates to a process cartridge for a laser printer, and more particularly to a process cartridge for a laser printer including a photosensitive drum, a developing roller, and a powder feeding roller.
  • the present invention is based on a Chinese utility model patent application filed on Dec. 27, 2012, with the application number 201220739078.1, the content of which is incorporated herein by reference.
  • the image forming process of the laser printer having the process cartridge 100 as a basic constituent core is that the surface of the photosensitive drum 101 is uniformly charged by the charging roller 102.
  • the laser scanner 103 emits a modulated laser beam 104 containing image information to the photosensitive drum 101, and after being irradiated by the laser beam 104, a static charge distribution map having a difference in distribution is formed on the cylindrical surface of the photosensitive drum 101, that is, to be imaged.
  • the image corresponds to the electrostatic latent image.
  • the developer such as the toner 106 from the developing roller 105 is transferred to the cylindrical surface of the photosensitive drum 101 while being adjusted by the powder discharging blade 113, and the electrostatic latent image is covered.
  • the visible image formed by the toner 106 on the surface of the photosensitive drum is shifted to the position where the transfer roller 107 is located.
  • the toner in the form of a visible image is transferred onto the surface of the recording medium 108 such as a sheet by the action of the transfer voltage carried by the transfer roller 107, and then on the recording medium 108 via the heating roller 111 and the pressure roller 112.
  • the carbon powder is infiltrated into the fiber layer of the recording medium 108, and the visible image formed by the carbon powder is permanently solidified on the recording medium 108.
  • the transfer roller 107 After the visible image on the photosensitive drum 101 is transferred by the transfer roller 107, the residual toner 109 adhered thereto is scraped off by the waste toner blade 110 into the waste toner collection chamber, and the surface of the photosensitive drum 101 is correspondingly eliminated.
  • the electrical equipment After the electrical equipment eliminates static electricity, it returns to the standby state of no electricity and no dust. This completes a basic imaging workflow. As a result of the repeated operation of the flow, the image required by the printer can be obtained.
  • the cylindrical surface of the developing roller 105 of the foregoing process cartridge 100 is divided into two parts, a part and the photosensitive drum 101, by a powder discharging blade 113 and a sealing sheet 114 which extend in the axial direction and surface of the developing roller 105 in an assembled state.
  • the part is in the bare state, which is called the working face 115
  • the toner 106 is transferred to the cylindrical surface of the photosensitive drum 101 via the working surface 115; the other part faces the inside of the powder bin 116, is hidden, and is sent
  • the toner powder from the powder container 116 is adsorbed from the surface of the powder container 116, and is referred to as the adsorption surface 118.
  • the carbon powder adsorbed by the adsorption surface 118 is adjusted by the powder discharging blade 113 after the developing roller 105 is rotated. It is transferred to the cylindrical surface of the photosensitive drum 101.
  • the process cartridge 100 Since the product generally has a transportation process from production to final use, the process cartridge 100 often faces a drop or vibration problem that is difficult to avoid during transportation. When such a problem occurs, the sealing sheet 114 is often subjected to an impact such that a gap occurs between the contact point with the developing roller 105 at the moment of dropping or vibration. Due to the extremely fine particle size of the toner, it leaks from the inside of the powder silo 116 to the outside of the powder silo 116 through the gap, and is deposited on the surface of the internal components of the process cartridge 100, causing contamination and even causing the printed document page to be gray. as a result of.
  • the present invention aims to provide a process cartridge for a laser printer in view of the above problem of leakage of powder in a process cartridge due to transport drop or vibration, thereby affecting environmental cleaning and printing effects.
  • the process cartridge is effective in preventing powder leakage caused by transport drops or vibrations.
  • a process cartridge for a laser printer includes a photosensitive drum for forming an electrostatic latent image, a developing roller for conveying the developer to the surface of the photosensitive drum, and a powder feeding roller for supplying the developer to the developing roller.
  • the powder discharging blade and the sealing sheet extending along the axial direction of the developing roller and the cylindrical surface of the developing roller separate the developing roller into a bare working surface and a hidden adsorption surface.
  • the process cartridge further includes an elastic mechanism that presses a portion of the sealing sheet that contacts the cylindrical surface of the developing roller toward the cylindrical surface of the developing roller.
  • the elastic mechanism is located in a cavity surrounded by the adsorption surface, the powder feed roller, and the bottom frame of the process cartridge.
  • the aforementioned process cartridge for a laser printer further includes a reinforcing sheet.
  • the reinforcing sheet is attached flatly to the surface of the sealing sheet facing away from the elastic mechanism.
  • One end of the bracket is attached to the bottom frame of the process box, and the other end is crimped to a portion of the reinforcing sheet facing away from the sealing sheet.
  • the aforementioned process cartridge for a laser printer further includes a detachable spacer that separates the photosensitive drum from the developing roller.
  • the present invention can ensure that the elastic contact between the developing roller and the sealing sheet can maintain a state in which no gap occurs even if subjected to strong vibration or a drop impact, thereby preventing the toner contained in the powder compartment of the process cartridge from being removed from the developing roller and the sealing sheet.
  • the poor sealing part leaks to the outside of the powder bin, effectively preventing the powder leakage caused by the drop or vibration of the transportation.
  • Figure 1 shows the working principle of the existing laser printer.
  • Fig. 2 is a schematic view showing the axial cross-sectional structure of a photosensitive drum of a process cartridge for a laser printer according to the present invention.
  • Fig. 3 is a partially enlarged schematic view of Fig. 2;
  • Figure 4 is a partial perspective view of a process cartridge for a laser printer of the present invention.
  • Figure 5 is a partial perspective view of the process cartridge for a laser printer of the present invention.
  • Figure 6 is a partial perspective view III of the process cartridge for a laser printer of the present invention.
  • FIG. 2 to 6 a partial structural view and a partial perspective view of a process cartridge for a laser printer of the present invention are shown, respectively.
  • the main structure of the processing cartridge for the laser printer of the present invention is basically the same as that of the conventional processing cartridge for a laser printer.
  • Those skilled in the art can refer to the related technical materials of the existing processing cartridge and combine the introduction of the background art of the present invention to obtain the present invention.
  • the basic structural condition of a process cartridge for a laser printer is invented. In view of this, the reference numerals of the members involved in the description of the specific embodiment of the process cartridge for a laser printer of the present invention will continue to follow the reference numerals of the same members of the background art of the present invention.
  • the process cartridge for the laser printer of the present invention relates to the developing roller and the seal thereof.
  • the elastic contact structure between the sheets is described in detail.
  • the main components of the process cartridge 100 of the present invention are substantially the same as those of the conventional process cartridge 100 shown in Figure 1, and the configuration mainly includes the photosensitive drum 101 and the charging roller. 102.
  • the powder discharging blade 113 and the sealing sheet 114 extend along the axial direction and the cylindrical surface of the developing roller 105, and the outer edges of both are kept in contact with the cylindrical surface of the developing roller 105. In this configuration state, the powder discharging blade 113 and the sealing sheet 114 divide the cylindrical surface of the developing roller 105 into two parts of the working surface 115 and the adsorption surface 118.
  • an elastic spring piece 121 extending in the axial direction of the developing roller 105 is mounted.
  • the elastic reed 121 is supported on the bottom frame 120 of the process cartridge 100, and applies pressure to the portion of the sealing sheet 114 that contacts the cylindrical surface of the developing roller 105, that is, the cantilever side of the sealing sheet 114, and presses it against the cylinder of the developing roller 105.
  • the surface is brought into close contact with the cantilever side of the sealing sheet 114 and the cylindrical surface of the developing roller 105.
  • a reinforcing sheet 122 is also provided in the process cartridge 100.
  • the reinforcing sheet 122 is a flat sheet which is flatly attached to the surface of the sealing sheet 114 facing away from the elastic reed 121, but the portion of the sealing sheet 114 for contacting the cylindrical surface of the developing roller 105, that is, the cantilever side is free status.
  • One end of the bracket 123 is hooked to the bottom frame 120 of the process cartridge 100 by a hook 124, and the other end is crimped to a portion of the reinforcing sheet 122 facing away from the sealing sheet 114.
  • the reinforcing sheet 122 can press the sealing sheet 114 to maintain the sealing sheet 114 in a flat state.
  • a spacer 125 which can be flexibly attached and detached is provided between the photosensitive drum 101 and the developing roller 105.
  • the spacer 125 is mounted in an interposed manner between the photosensitive drum 101 and the developing roller 105, and is detached in an extracting manner, which serves as a spacer between the two to separate the two.
  • the process cartridge 100 is transported, the presence of the spacer 125 prevents the toner leaked from the powder silo 116 from coming into contact with the photosensitive drum 101; when printing is required using the process cartridge 100, the spacer 125, the photosensitive drum 101, and the developing roller 105 are taken out. The barrier between them is eliminated and the two enter standby mode.
  • the surface of the photosensitive drum 101 is uniformly charged by the charging roller 102.
  • the laser scanner 103 emits a modulated laser beam 104 containing image information to the photosensitive drum 101, and after the laser beam 104 is irradiated, forms a static charge distribution map having a difference in distribution on the cylindrical surface of the photosensitive drum 101, that is, waiting for The electrostatic latent image corresponding to the copied image.
  • the developer such as the toner 106 from the developing roller 105 is transferred to the cylindrical surface of the photosensitive drum 101 while being adjusted by the powder discharging blade 113, and the electrostatic latent image is covered. Convert it into a visible image that can be visually observed.
  • the visible image formed by the toner 106 on the surface of the photosensitive drum 101 is displaced to the position where the transfer roller 107 is located.
  • the toner in the form of a visible image is transferred onto the surface of the recording medium 108 such as a sheet by the action of the transfer voltage carried by the transfer roller 107, and then on the recording medium 108 via the heating roller 111 and the pressure roller 112.
  • the carbon powder is infiltrated into the fiber layer of the recording medium 108, and the visible image formed by the carbon powder is permanently solidified on the recording medium 108.
  • the static elimination device eliminates static electricity, it returns to the standby state without electricity and dust.
  • the processing box for the laser printer of the present invention is directed to the problem that the existing processing box is leaky or damaged due to transportation drop or vibration, thereby affecting environmental cleaning and printing effect.
  • the crux of the problem is the elasticity between the developing roller and the sealing sheet.
  • the contact is caused by poor contact or loss of contact due to strong vibration or drop shock during transportation.
  • an elastic mechanism for pressing the portion of the sealing sheet contacting the cylindrical surface of the developing roller against the cylindrical surface of the developing roller is added. This configuration increases the elastic contact pressure between the sealing sheet and the cylindrical surface of the developing roller.

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  • Engineering & Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Sustainable Development (AREA)
  • Dry Development In Electrophotography (AREA)
  • Cleaning In Electrography (AREA)
  • Electrophotography Configuration And Component (AREA)

Abstract

一种激光打印机用处理盒（100），包括感光鼓（101）、显影辊（105）和送粉辊（117）。沿着显影辊（105）的轴向和显影辊（105）的圆柱面延伸的出粉刀（113）和密封片（114）将显影辊（105）分隔成裸露的工作面（115）和隐藏的吸附面（118）。处理盒（100）还包括把密封片（114）之接触显影辊（105）圆柱面的部位压向显影辊（105）圆柱面的弹性机构（121）。处理盒（100）作为激光照相成像设备，可以有效杜绝因运输跌落或振动而出现的漏粉现象。

Description

激光打印机用处理盒
本发明涉及激光打印机用处理盒，特别是包含有感光鼓、显影辊和送粉辊的激光打印机用处理盒。本发明基于申请日为2012年12月27日、申请号为201220739078.1的中国实用新型专利申请，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。
参见图1，以处理盒100为基本构成核心的激光打印机的成像过程是，感光鼓101表面由充电辊102均匀地充电。激光扫描器103向感光鼓101发射含有图像信息并且经过调制的激光束104，经激光束104照射后在感光鼓101的圆柱形表面形成分布存有差异的静电荷分布图，亦即与待成像的图像对应的静电潜像。之后，自显影辊105传来的碳粉106之类的显影剂在经过出粉刀113调节层厚的状态下转而吸附在感光鼓101的圆柱形表面上，将前述静电潜像覆盖后，转换成可以肉眼观察的可视图像。随着感光鼓101的旋转，由碳粉106在感光鼓表面形成的可视图像换位至转印辊107所在的位置。经转印辊107所携带的转印电压的作用，将可视图像形式的碳粉转印至纸张等记录介质108的表面上，随后经加热辊111和加压辊112对记录介质108上的可视图像形式的碳粉进行加热加压后，使碳粉渗入到记录介质108的纤维层中，将碳粉形成的可视图像永久地固化于记录介质108上。前述感光鼓101上的可视图像在被转印辊107转印之后，附着于其上的残留碳粉109由废粉刮片110刮除至废粉收集仓中，感光鼓101表面经相应消电设备消除静电后恢复至无电无尘的备用状态。这样就完成了一个基本的成像工作流程。该流程反复循环运转的结果，就可以得到打印者所需要的图像。
参见图2，前述处理盒100的显影辊105的圆柱面在装配状态下被顺着显影辊105的轴向和表面延伸的出粉刀113和密封片114分隔成两部分，一部分与感光鼓101保持面面相对，该部分处于裸露状态，称其为工作面115，碳粉106即经由工作面115转移至感光鼓101的圆柱形表面上；另一部分面向粉仓116内部，处于隐藏状态，送粉辊117从粉仓116内传来的碳粉即由此表面吸附，称其为吸附面118，吸附面118吸附的碳粉于显影辊105转动状态下在经过出粉刀113调节层厚之后就转移到感光鼓101的圆柱形表面上。
由于产品从生产到最终使用一般都存在一个运输过程，因此，处理盒100往往面临运输过程中难于避免的跌落或振动问题。在发生此类问题时，往往会造成密封片114受到冲击而导致其同显影辊105的接触点之间在跌落或振动瞬间出现间隙。由于碳粉粒径极细的原因，其将从粉仓116内部经由此间隙泄漏到粉仓116的外部，进而沉积于处理盒100内部构件的表面上，造成污染，甚至引起打印稿件页面灰暗的后果。
针对上述因运输跌落或振动导致处理盒出现漏粉进而影响环境清洁以及打印效果的问题，本发明目的在于提供一种激光打印机用处理盒。该处理盒可有效地杜绝因运输跌落或振动而出现的漏粉现象。
为了达成上述发明目的，本发明采用的激光打印机用处理盒，包括用于形成静电潜像的感光鼓、把显影剂传送至感光鼓表面的显影辊和把显影剂供应至显影辊的送粉辊。沿着显影辊的轴向和显影辊的圆柱面延伸的出粉刀和密封片将显影辊分隔成裸露的工作面和隐藏的吸附面。该处理盒还包括把密封片之接触显影辊圆柱面的部位压向显影辊圆柱面的弹性机构。
前述激光打印机用处理盒，其弹性机构位于吸附面、送粉辊和处理盒的底框三者围成的空腔内。
前述激光打印机用处理盒，还包括加强片。加强片平整地贴附于密封片之背对弹性机构的表面上。支架的一端挂接于处理盒的底框上，其另一端压接于加强片背对密封片的部位。
前述激光打印机用处理盒，还包括把感光鼓和显影辊分隔开的可拆卸的隔离片。
本发明可以保证显影辊和密封片之间的弹性接触即使受到强烈振动或跌落冲击也仍然能够保持不出现间隙的状态，进而防止处理盒之粉仓内部容纳的碳粉从显影辊和密封片之间的不良密封部位泄漏致粉仓的外部，达到有效杜绝因运输跌落或振动而出现的漏粉现象。
附图说明
图1现有激光打印机工作原理示意图。
图2本发明激光打印机用处理盒的感光鼓轴向横截面结构示意图。
图3是图2的局部放大示意图。
图4本发明激光打印机用处理盒之局部透视图一。
图5本发明激光打印机用处理盒之局部透视图二。
图6本发明激光打印机用处理盒之局部透视图三。
下面结合附图详细描述本发明激光打印机用处理盒。
参见图2～6，分别示出了本发明激光打印机用处理盒的局部结构示意图及其局部透视图。
本发明激光打印机用处理盒的主要构造方式与现有激光打印机用处理盒的结构基本相同，本领域技术人员可参阅现有处理盒的相关技术资料并结合本发明背景技术部分的介绍以获知本发明激光打印机用处理盒的基本构造状况。鉴于此，在本发明激光打印机用处理盒具体实施方式的描述中所涉构件的附图标记将继续沿用本发明背景技术部分相同构件的附图标记。另外，根据本发明之针对运输跌落或振动导致处理盒出现漏粉进而影响环境清洁以及打印效果的问题提出适宜解决方案的初衷，申请人将就本发明激光打印机用处理盒涉及其显影辊和密封片之间的弹性接触构造部分进行重点描述。
见图2、3、4、5、6，并参照图1，本发明的处理盒100的主要构成部件与图1所示现有处理盒100基本相同，其构成主要包括感光鼓101、充电辊102、显影辊105、送粉辊117、出粉刀113、废粉刮片110。
出粉刀113和密封片114顺着显影辊105的轴向和圆柱面延伸，两者的外沿都同显影辊105的圆柱面保持接触。在此构造状态下，出粉刀113和密封片114把显影辊105的圆柱面分隔成工作面115和吸附面118两部分。
在吸附面118、送粉辊117和处理盒100的底框120三者围成的空腔内，装设有沿着显影辊105的轴向延伸的弹性簧片121。弹性簧片121支撑于处理盒100的底框120上，它向密封片114之接触显影辊105的圆柱面的部位，即密封片114的悬臂边施加压力，把它压向显影辊105的圆柱面，使密封片114的悬臂边同显影辊105的圆柱面之间保持紧密接触。
在处理盒100中还设置有加强片122。加强片122是一块平板片材，它平整地贴附于密封片114之背对弹性簧片121的表面上，但保持密封片114用来接触显影辊105之圆柱面的部位即悬臂边处于自由状态。支架123的一端通过挂钩124挂接于处理盒100的底框120上，其另一端压接于加强片122之背对密封片114的部位。通过支架123对加强片122提供的支撑，加强片122可以压迫密封片114使密封片114保持平整的状态。
在感光鼓101和显影辊105之间，设置有可以灵活拆装的隔离片125。隔离片125在感光鼓101和显影辊105之间以***方式进行安装，以抽出方式进行拆卸，它在两者之间充当隔板的角色，将两者分隔开。在运输处理盒100时，隔离片125的存在可以防止从粉仓116漏出的碳粉接触到感光鼓101；在需要使用处理盒100进行打印时，抽出隔离片125，感光鼓101和显影辊105之间的阻隔物被消除，两者即进入待机使用状态。
处理盒100工作时，感光鼓101表面由充电辊102均匀地充电。激光扫描器103向感光鼓101发射含有图像信息并且经过调制的激光束104，经激光束104照射后在感光鼓101的圆柱形表面形成其分布存有差异的静电荷分布图，亦即与待复制的图像对应的静电潜像。之后，自显影辊105传来的碳粉106之类的显影剂在经过出粉刀113调节层厚的状态下转而吸附在感光鼓101的圆柱形表面上，将前述静电潜像覆盖后，把其转换成可以肉眼观察的可视图像。随着感光鼓101的旋转，由碳粉106在感光鼓101表面形成的可视图像换位至转印辊107所在的位置。经转印辊107所携带的转印电压的作用，将可视图像形式的碳粉转印至纸张等记录介质108的表面上，随后经加热辊111和加压辊112对记录介质108上的可视图像形式的碳粉进行加热加压后，使碳粉渗入到记录介质108的纤维层中，将碳粉形成的可视图像永久地固化于记录介质108上。前述感光鼓101上的可视图像在被转印辊107转印之后，附着于其上的残留碳粉109由废粉刮片110刮除至废粉收集仓119中，感光鼓101表面经相应消电设备消除静电后恢复至无电无尘的备用状态。
本发明激光打印机用处理盒，针对现有处理盒因运输跌落或振动导致处理盒出现漏粉进而影响环境清洁以及打印效果的问题，分析出现该问题的症结在于显影辊和密封片之间的弹性接触因运输过程中的强烈振动或跌落冲击引起其接触不良或失去接触所致，在此基础上，增设了把密封片之接触显影辊圆柱面的部位压向显影辊圆柱面的弹性机构。这种构造方式，增加了密封片和显影辊圆柱面之间的弹性接触压力。

Claims (4)

  1. 激光打印机用处理盒，包括用于形成静电潜像的感光鼓、把显影剂传送至所述感光鼓表面的显影辊和把显影剂供应至所述显影辊的送粉辊，沿着所述显影辊的轴向和所述显影辊的圆柱面延伸的出粉刀和密封片将所述显影辊分隔成裸露的工作面和隐藏的吸附面，其特征在于，还包括把所述密封片之接触所述显影辊圆柱面的部位压向所述显影辊圆柱面的弹性机构。
  2. 根据权利要求1所述激光打印机用处理盒，其特征在于，所述弹性机构位于所述吸附面、所述送粉辊和所述处理盒的底框三者围成的空腔内。
  3. 根据权利要求2所述激光打印机用处理盒，其特征在于，还包括加强片，所述加强片平整地贴附于所述密封片之背对所述弹性机构的表面上，支架的一端挂接于所述处理盒的底框上而其另一端压接于所述加强片背对所述密封片的部位。
  4. 根据权利要求2或3所述激光打印机用处理盒，其特征在于，还包括把所述感光鼓和所述显影辊分隔开的可拆卸的隔离片。
PCT/CN2013/087762 2012-12-27 2013-11-25 激光打印机用处理盒 WO2014101603A1 (zh)

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