WO2011076061A1 - 充电装置及感光鼓组件 - Google Patents

充电装置及感光鼓组件 Download PDF

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Publication number
WO2011076061A1
WO2011076061A1 PCT/CN2010/079488 CN2010079488W WO2011076061A1 WO 2011076061 A1 WO2011076061 A1 WO 2011076061A1 CN 2010079488 W CN2010079488 W CN 2010079488W WO 2011076061 A1 WO2011076061 A1 WO 2011076061A1
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WO
WIPO (PCT)
Prior art keywords
side wall
hole
positioning mechanism
conductive sheet
corona
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PCT/CN2010/079488
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English (en)
French (fr)
Inventor
秦华金
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珠海天威飞马打印耗材有限公司
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Publication of WO2011076061A1 publication Critical patent/WO2011076061A1/zh

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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
    • G03G15/02—Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices
    • G03G15/0291—Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices corona discharge devices, e.g. wires, pointed electrodes, means for cleaning the corona discharge device
    • 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
    • G03G2215/02—Arrangements for laying down a uniform charge
    • G03G2215/026—Arrangements for laying down a uniform charge by coronas

Definitions

  • the present invention relates to a charging device for charging a photosensitive drum of a photosensitive drum assembly and a photosensitive drum assembly to which the charging device is applied.
  • the present invention is based on a Chinese utility model patent application filed on Dec. 24, 2009, with the application number of 2009.
  • Laser printers are common printing devices that provide great convenience for modern office use. Most of the existing laser printers use a process cartridge that is detachably mounted in a laser printer to provide toner for printing. During the printing process, the toner loaded in the process cartridge is transferred onto the paper as a printing medium to form a desired paper. Patterns and text.
  • a conventional type of process cartridge is composed of a toner cartridge and a photosensitive drum assembly, and the toner cartridge has a cavity for containing toner and is provided with a developing roller or the like.
  • the toner cartridge is detachably mounted in the photoconductor kit and forms a process cartridge together with the photoconductor kit.
  • a conventional photosensitive drum unit has a lower frame 2 to which an upper frame 1 is mounted, and an upper portion of the lower frame 2 is used for detachably mounting and detaching a toner cartridge.
  • a photosensitive drum 4 and a transfer roller 3 are also mounted in the lower frame 2, and the photosensitive drum 4 can receive the toner sent from the toner cartridge and transfer the toner onto the paper.
  • the charging device is mounted in the upper frame 1.
  • One end of the upper frame 1 is provided with an end cover 12, that is, a charging device comprising a conductive wire 13, a corona grid 14 and a brush 20 mounted in the upper frame 1.
  • the corona grid 14 is disposed opposite the surface of the photosensitive drum 4, and has a first side wall 15 and a second side wall 16 opposite to the first side wall 15, a first side wall 15 and a second side wall 16.
  • a lower wall 17 is disposed between the lower wall 17 and the first side wall 15 and the second side wall 16 , and a plurality of elongated grids 18 are defined in the lower wall 17 .
  • the conductive filament 13 is mounted above the lower wall 17 of the corona grid 14, i.e., the conductive filament 13 is surrounded by the lower wall 17, the first side wall 15, and the second side wall 16 of the corona grid 14.
  • the conductive wire 13 is loaded with high voltage electricity, generally 3000 volts DC, and forms a high voltage corona.
  • the high voltage electricity is uniformly loaded on the photosensitive drum 4 through the grid 18 of the corona grid 14.
  • the surface of the photosensitive drum 4 is uniformly charged to facilitate exposure of the photosensitive drum 4.
  • the corona grid 14 is connected to the conductive sheet 20, and the high voltage electricity on the corona grid 14 is conducted to the conductive sheet 20.
  • the other end of the conductive sheet 20 is connected to the brush holder 27 of the brush 26 through the resistor 25, and the high voltage on the corona grid 14 is stepped down and transmitted to the brush 26 to charge the bristles 28 of the brush 26 for bristles. 28 better removes the toner remaining on the surface of the photosensitive drum 4.
  • the conductive sheet 20 has a first side wall 21 that interfaces with the first side wall 15 of the corona grid 14, thereby achieving electrical connection of the corona grid 14 with the conductive sheet 20.
  • the conductive sheet 20 and the corona grid 14 are supported and fixed by the structure of the upper frame 11, so that the first side wall 21 of the conductive sheet 20 is butted against the first side wall 15 of the corona grid 14.
  • the conductive sheet 20 further has a second sidewall 22 and a connecting wall 23 connecting the first sidewall 21 and the second sidewall 22, and the second sidewall 22 is connected to the resistor 25.
  • the first side wall 15 of the corona grid 14 and the first side wall 21 of the conductive sheet 20 are flat surfaces, and the connection between the corona grid 14 and the conductive sheet 20 is not strong, and the conductive sheet 20 and the corona grid are easily caused.
  • the relative movement between the 14 causes the conductive sheet 20 to be in poor contact with the corona grid 14, thereby affecting the power supply of the corona grid 14 to the conductive sheet 20, so that the brush 26 cannot cleanly remove the residual toner on the surface of the photosensitive drum 4.
  • the main object of the present invention is to provide an improved charging device
  • Another object of the present invention is to provide a photosensitive drum module which can reliably remove residual toner on the surface of a photosensitive drum.
  • the charging device comprises a corona grid and a brush
  • the corona grid has a side wall and a lower wall adjacent to the side wall, and the lower wall is provided with a plurality of grids
  • a corona grid A conductive wire is disposed above the lower wall
  • the charging device is further provided with a conductive sheet having a first sidewall abutting the sidewall of the corona grid and a second sidewall connected to the first sidewall through the connecting wall, the second sidewall
  • the first side positioning mechanism is disposed on the sidewall of the corona grid
  • the first side wall of the conductive sheet is provided with a second positioning mechanism cooperatively positioned with the first positioning mechanism.
  • the sidewall of the corona grating and the first sidewall of the conductive sheet are provided with a first positioning mechanism and a second positioning mechanism, and the corona grating and the conductive sheet can be firmly connected to avoid the conductive sheet. Relative movement with the corona grid ensures stable power supply to the conductive sheets.
  • the first positioning mechanism is a through hole
  • the second positioning mechanism is a protrusion having the same cross section as the shape of the through hole, that is, the corona grid and the conductive sheet are fixedly connected by the cooperation of the protrusion and the through hole.
  • the first sidewall of the conductive sheet is prevented from sliding on the sidewall of the corona grid, and the conductive sheet can stably supply power to the brush, which is beneficial for the brush to remove residual toner on the surface of the photosensitive drum.
  • the bump is spherical and the through hole is a circular hole, and the diameter of the circular hole is equal to the diameter of the bottom surface of the bump.
  • the bumps can be securely fitted in the circular holes, and the bumps are not movable relative to the circular holes, so that the conductive sheets cannot move relative to the corona grid, ensuring a firm connection of the conductive sheets to the corona grid.
  • the photosensitive drum assembly has a lower frame in which a photosensitive drum and a charging device are mounted, an upper frame, a corona grid and a brush are mounted in the upper frame, and the corona grid has a a side wall and a lower wall adjacent to the side wall, wherein the lower wall is provided with a plurality of grids, a conductive wire is disposed above the lower wall of the corona grid, and the charging device is further provided with a conductive sheet having a side wall of the corona grid a first side wall and a second side wall connected to the first side wall through the connecting wall, wherein the second side wall is connected to the brush by a resistor, wherein the sidewall of the corona grid is provided with a first positioning mechanism, the conductive sheet
  • the first side wall is provided with a second positioning mechanism that is cooperatively positioned with the first positioning mechanism.
  • the corona grating and the conductive sheet are fixedly connected to the second positioning mechanism through the first positioning mechanism, thereby ensuring that the corona grid provides stable high-voltage power to the conductive sheet, thereby ensuring stable DC current of the brush and enabling the brush to Cleanly remove the toner remaining on the drum surface.
  • FIG. 1 is a structural exploded view of a conventional photosensitive drum assembly
  • FIG. 2 is an exploded, isometric view showing the structure of a conventional charging device installed in an upper frame
  • FIG. 3 is a partial enlarged view of a corona grid and a conductive sheet in a conventional charging device
  • FIG. 4 is a structural view of a corona grid and a conductive sheet in the first embodiment of the charging device of the present invention
  • FIG. 5 is a structural view showing another perspective of the corona grating and the conductive sheet in the first embodiment of the charging device of the present invention
  • Figure 6 is a structural view showing a corona grid and a conductive sheet in a second embodiment of the charging device of the present invention.
  • the charging device of the embodiment is similar to the existing charging device, and is mounted on the upper frame and under the end cover at one end of the upper frame, that is, the upper frame is provided with a corona grating, a conductive sheet, a conductive wire, a brush, and the like.
  • the charging device has a high voltage electric current loaded on the conductive wire and is discharged to the photosensitive drum through the corona grid, and the conductive sheet is connected to the brush holder of the brush through the resistor.
  • the structure of the corona grid and the conductive sheet in this embodiment is as shown in FIG.
  • the corona grid 30 of the present embodiment has a first side wall 31 and a second side wall 32 opposite to the first side wall 31.
  • a lower wall 33 and a lower wall are disposed between the first side wall 31 and the second side wall 32.
  • a plurality of grids 34 are provided on the 33 to allow the corona generated by the conductive filaments to pass, so that the surface of the photosensitive drum is uniformly charged.
  • a circular through hole 35 as a first positioning mechanism of the present embodiment is opened at one end of the first side wall 31.
  • the through hole 35 is located at a middle portion of the first side wall 31 in the height direction.
  • the conductive sheet 40 is connected to the corona grid 30.
  • the conductive sheet 40 has a first sidewall 41 and a second sidewall 42 opposite to the first sidewall 41.
  • the first sidewall 41 and the second sidewall 42 are connected.
  • the wall 43, the first side wall 41 of the conductive sheet 40 abuts the first side wall 31 of the corona grid 30.
  • a bump 45 as a second positioning mechanism of the present embodiment is provided on the first side wall 41 of the conductive sheet 40, and the bump 45 can be fitted in the through hole 35.
  • the bump 45 has a spherical crown shape, and the diameter of the bottom surface of the bump 45 is equal to the diameter of the through hole 35, that is, the cross section of the bump is the same as the shape of the through hole, thereby preventing the first side wall 41 from being opposite to the first side. Sliding between the walls 31.
  • the bump 45 is set in the through hole 35. Due to the mating connection of the bump 45 and the through hole 35, the conductive sheet 40 is not corona.
  • the gate 30 is relatively slid to prevent the conductive sheet 40 from being in contact with the corona grid 30, thereby preventing the power supply from being applied to the brush, ensuring that the brush receives electric energy to charge the bristles and better remove the toner remaining on the surface of the photosensitive drum. .
  • the outwardly protruding protrusions may be disposed on the first side wall 31 of the corona grid 30 as a first positioning mechanism, and the first side wall 41 of the conductive sheet 40 is provided with the protrusions.
  • the through hole serves as a second positioning mechanism, that is, the bump has a connecting section, and the through hole has the same shape as the section of the bump connection, which can obtain the same effect.
  • the present embodiment is mounted under the upper frame and the end cover, that is, a charging device composed of a conductive wire, a corona grating, a conductive sheet, and a brush is mounted in the upper frame, and the corona grating and the conductive sheet are mounted.
  • a charging device composed of a conductive wire, a corona grating, a conductive sheet, and a brush is mounted in the upper frame, and the corona grating and the conductive sheet are mounted.
  • the structure is shown in Figure 6.
  • the corona grating 50 of the present embodiment has a first sidewall 51 and a second sidewall 52 opposite to the first sidewall 51.
  • a lower wall 53 is connected between the first sidewall 51 and the second sidewall 52.
  • a plurality of grids 54 are defined in the wall 53.
  • a through hole 55 as a first positioning mechanism of the present embodiment is provided at one end of the first side wall 51.
  • the through hole 55 is a square hole having a rectangular cross section.
  • the conductive sheet 60 has a first sidewall 61 and a second sidewall 62 opposite to the first sidewall 61.
  • a connecting wall 63 is disposed between the first sidewall 61 and the second sidewall 62.
  • the first sidewall 61 is electrically connected.
  • the first side wall 51 of the halo 50 is butted, and the first side wall 61 is provided with an outwardly convex protrusion 65.
  • the protrusion 65 is the second positioning mechanism of the embodiment, and the protrusion 65 is a rectangular parallelepiped.
  • the cross section is rectangular.
  • the length of the cross section of the bump 65 is equal to the length of the through hole 55, and the width of the cross section of the bump 65 is also equal to the width of the through hole 55, so that the bump 65 is fitted in the through hole 55.
  • the bumps 65 cooperate with the through holes 55, so that the corona grating 50 and the conductive sheet 60 are firmly connected without relative movement, and the conductive sheet 60 and the corona grid 50 are ensured.
  • the connection is stable, so that the brush can obtain a stable power supply, which is good for removing the toner remaining on the surface of the photosensitive drum.
  • a bump may be disposed on the first sidewall 51 of the corona grating 50 as a first positioning mechanism, and a through hole is disposed on the first sidewall 61 of the conductive sheet 60 as a second positioning mechanism.
  • the object of the invention is achieved.
  • a photosensitive drum module has a lower frame on which a charging device as described above and a photosensitive drum, a transfer roller, and the like are mounted, and the toner cartridge is detachably mounted in an opening in an upper portion of the lower frame to constitute a process cartridge . Since a pair of sidewalls of the corona grating and the conductive sheet are provided with a bump and a through hole as a positioning mechanism, the corona grating and the conductive sheet can be prevented from moving relative to each other, and the conductive sheet and the corona grid are not in contact with each other, thereby preventing poor contact between the conductive sheet and the corona grid. Make sure the brush has a stable power source to remove the toner remaining on the drum surface.
  • the sidewall of the corona grating of the charging device of the present invention and the first sidewall of the conductive sheet are provided with a first positioning mechanism and a second positioning mechanism, and the corona grating and the conductive sheet can be firmly connected to avoid the conductive sheet and the conductive sheet.
  • the corona grid is relatively moved to ensure stable power supply to the conductive sheets. Therefore, the photosensitive drum module of the present invention can ensure that the brush obtains a stable direct current, so that the brush can cleanly remove the toner remaining on the surface of the photosensitive drum.

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  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
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Description

充电装置及感光鼓组件 技术领域
本发明涉及一种用于对感光鼓组件的感光鼓进行充电的充电装置以及应用该充电装置的感光鼓组件。本发明基于申请日为2009年12月24日、申请号为200920295718.2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。
背景技术
激光打印机是常见的打印设备，为现代化办公提供极大的方便。现有的激光打印机大多使用可拆卸地安装到激光打印机内的处理盒提供打印使用的碳粉，在打印过程中，处理盒装载的碳粉转印在作为打印介质的纸张上，形成所需的图案和文字。
现有的一类处理盒由碳粉盒与感光鼓组件构成，碳粉盒具有容纳碳粉的腔体，并设有显影辊等部件。碳粉盒可拆卸地安装到感光鼓组件内，并与感光鼓组件一起组成一个处理盒。
参见图1，现有的一种感光鼓组件具有一个下框架2，下框架2上安装有上框架1，下框架2上部的敞口用于可拆安装卸地安装碳粉盒。在下框架2中还安装有感光鼓4以及转印辊3，感光鼓4可接收碳粉盒送出的碳粉，并将碳粉转印至纸张上。
参见图2,充电装置安装在上框架1内，上框架1的一端设有端盖12，即上框架1内安装有导电丝13、电晕栅14以及毛刷20构成的充电装置。
参见图3，电晕栅14正对感光鼓4的表面设置，其具有第一侧壁15以及与第一侧壁15相对的第二侧壁16，第一侧壁15与第二侧壁16之间设有下壁17，下壁17与第一侧壁15及第二侧壁16邻接，且下壁17上开设有多个呈长条状的栅格18。
回看图2，导电丝13安装在电晕栅14下壁17的上方，即导电丝13被电晕栅14的下壁17、第一侧壁15以及第二侧壁16包围。处理盒工作时，导电丝13上加载有高压电，一般为3000伏的直流电，并形成高压电晕，高压电穿过电晕栅14的栅格18均匀地加载在感光鼓4上，使感光鼓4表面均匀带电，便于感光鼓4曝光。
并且，电晕栅14与导电片20连接，电晕栅14上的高压电传导至导电片20上。导电片20的另一端通过电阻25与毛刷26的毛刷架27连接，将电晕栅14上的高压电降压后传导至毛刷26，使毛刷26的刷毛28带电，便于刷毛28更好地清除残留在感光鼓4表面的碳粉。
参见图3，导电片20具有第一侧壁21，与电晕栅14的第一侧壁15对接，以此实现电晕栅14与导电片20的电连接。导电片20与电晕栅14通过上框架11的结构支承固定，从而实现导电片20的第一侧壁21与电晕栅14的第一侧壁15对接。导电片20还具有第二侧壁22以及连接第一侧壁21及第二侧壁22的连接壁23，第二侧壁22与电阻25连接。
 技术问题
但是，电晕栅14的第一侧壁15以及导电片20的第一侧壁21均为平坦的表面，电晕栅14与导电片20的连接不牢固，容易导致导电片20与电晕栅14之间发生相对移动的情况，造成导电片20与电晕栅14接触不良，从而影响电晕栅14向导电片20供电，导致毛刷26不能干净地清除感光鼓4表面残余碳粉。
技术解决方案
本发明的主要目的是提供一种改进了的充电装置；
本发明的另一目的是提供一种能可靠地清除感光鼓表面残留碳粉的感光鼓组件。
为实现上述的主要目的，本发明提供的充电装置包括电晕栅及毛刷，电晕栅具有一个侧壁以及与侧壁邻接的下壁，下壁上设有多个栅格，电晕栅下壁上方设置有导电丝，充电装置还设有导电片，其具有与电晕栅侧壁对接的第一侧壁以及通过连接壁与第一侧壁连接的第二侧壁，第二侧壁通过一电阻与毛刷连接，其中，电晕栅的侧壁上设有第一定位机构，导电片的第一侧壁上设有与第一定位机构配合定位的第二定位机构。
由上述方案可见，电晕栅的侧壁与导电片的第一侧壁上设有相互配合的第一定位机构与第二定位机构，电晕栅与导电片即可牢固地连接，避免导电片与电晕栅发生相对运动，确保导电片的供电稳定。
一个优选的方案是，第一定位机构为一通孔，第二定位机构为具有与通孔形状相同截面的凸块，也就是电晕栅与导电片通过凸块与通孔的配合固定连接。这样可避免导电片的第一侧壁在电晕栅侧壁上滑动，导电片可稳定地向毛刷供电，有利于毛刷清除感光鼓表面的残留碳粉。
进一步的方案是，凸块为球冠状，且通孔为圆孔，圆孔的直径与凸块的底面直径相等。这样，凸块可牢固地套装在圆孔内，且凸块不可相对于圆孔运动，从而使导电片不可以相对电晕栅运动，确保导电片与电晕栅的牢固连接。
为实现上述的另一目的，本发明提供的感光鼓组件具有下框架，下框架内安装有感光鼓以及充电装置，上框架，上框架内安装有电晕栅及毛刷，电晕栅具有一个侧壁以及与侧壁邻接的下壁，下壁上设有多个栅格，电晕栅下壁上方设置有导电丝，充电装置还设有导电片，其具有与电晕栅侧壁对接的第一侧壁以及通过连接壁与第一侧壁连接的第二侧壁，第二侧壁通过一电阻与毛刷连接，其中，电晕栅的侧壁上设有第一定位机构，导电片的第一侧壁上设有与第一定位机构配合定位的第二定位机构。
由此可见，电晕栅与导电片通过第一定位机构与第二定位机构固定连接，确保电晕栅向导电片提供稳定的高压电，从而保证毛刷获得稳定的直流电，使毛刷能干净地清除残留在感光鼓表面上的碳粉。
 附图说明
图1是现有一种感光鼓组件的结构分解图；
图2是现有充电装置安装在上框架内的结构分解放大图；
图3是现有充电装置中电晕栅以及导电片的局部放大图；
图4是本发明充电装置第一实施例中电晕栅及导电片的结构图；
图5是本发明充电装置第一实施例中电晕栅及导电片配合时另一视角的结构图；
图6是本发明充电装置第二实施例中电晕栅及导电片的结构图。
以下结合附图及实施例对本发明作进一步说明。
 本发明的实施方式
充电装置第一实施例：
本实施例的充电装置与现有的充电装置相类似，安装在上框架以及位于上框架一端的端盖下，即上框架内安装有由电晕栅、导电片、导电丝、毛刷等构成的充电装置，导电丝上加载有高压电，并通过电晕栅向感光鼓放电，导电片通过电阻与毛刷的毛刷架连接。本实施例中的电晕栅与导电片的结构如图4所示。
本实施例的电晕栅30具有第一侧壁31以及与第一侧壁31相对的第二侧壁32，第一侧壁31与第二侧壁32之间设有下壁33，下壁33上设有多个栅格34，以便导电丝产生的电晕通过，使感光鼓表面均匀带电。在第一侧壁31的一端开设有一个作为本实施例第一定位机构的圆形通孔35，优选地，通孔35位于第一侧壁31高度方向的中部。
导电片40与电晕栅30连接，导电片40具有第一侧壁41以及与第一侧壁41相对的第二侧壁42，第一侧壁41与第二侧壁42之间设有连接壁43，导电片40的第一侧壁41与电晕栅30的第一侧壁31对接。在导电片40的第一侧壁41上设有作为本实施例第二定位机构的凸块45，凸块45可套装在通孔35内。本实施例中，凸块45为球冠状，且凸块45的底面直径与通孔35的直径相等，即凸块的截面与通孔的形状相同，从而防止第一侧壁41相对第一侧壁31之间的滑动。
参见图5，电晕栅30与导电片40安装到处理盒上后，凸块45套装在通孔35内，由于凸块45与通孔35的配合连接，使导电片40不会与电晕栅30发生相对滑动，避免导电片40与电晕栅30接触不良而导致无法向毛刷供电情况的发生，确保毛刷获得电能以使刷毛带电，更好地清除残留在感光鼓表面的碳粉。
当然，实际应用时，可以在电晕栅30的第一侧壁31上设置向外突出的凸块作为第一定位机构，在导电片40的第一侧壁41上开设与凸块相配合的通孔作为第二定位机构，即凸块具有连接截面，通孔具有与凸块连接截面相同的形状，这可获得相同的效果。
充电装置第二实施例：
与第一实施例相同，本实施例安装在上框架及端盖下，即上框架内安装有由导电丝、电晕栅、导电片以及毛刷等构成的充电装置，电晕栅与导电片的结构如图6所示。
本实施例的电晕栅50具有第一侧壁51以及与第一侧壁51相对的第二侧壁52，在第一侧壁51与第二侧壁52之间连接有下壁53，下壁53上开设有多个栅格54。在第一侧壁51的一端设有作为本实施例第一定位机构的通孔55，通孔55为方孔，其横截面为长方形。
导电片60具有第一侧壁61以及与第一侧壁61相对的第二侧壁62，第一侧壁61与第二侧壁62之间设有连接壁63，第一侧壁61与电晕栅50的第一侧壁51对接，且第一侧壁61上设有向外凸起的凸块65，凸块65为本实施例的第二定位机构，且凸块65为长方体，其横截面为长方形。优选地，凸块65横截面的长度与通孔55的长度相等，且凸块65横截面的宽度也与通孔55的宽度相等，便于凸块65套装在通孔55内。
电晕栅50与导电片60安装到处理盒后，凸块65与通孔55配合，使电晕栅50与导电片60连接牢固，不会发生相对移动，确保导电片60与电晕栅50的连接稳定，使毛刷获得稳定的电源，有利于清除残留在感光鼓表面的碳粉。
当然，实际应用时，可以在电晕栅50的第一侧壁51上设置凸块作为第一定位机构，在导电片60的第一侧壁61上设置通孔作为第二定位机构，也可以实现本发明的目的。
感光鼓组件实施例：
根据本发明的感光鼓组件具有下框架，下框架上安装有如上所述的充电装置以及感光鼓、转印辊等，碳粉盒可拆卸地安装到下框架上部的敞口内，从而组成处理盒。由于电晕栅与导电片对接的一对侧壁上设有凸块及通孔作为定位机构，能确保电晕栅与导电片不会发生相对运动，避免导电片与电晕栅接触不良，从而确保毛刷获得稳定的电源以便清除残留在感光鼓表面上的碳粉。
最后需要强调的是，本发明不限于上述实施方式，如凸块与通孔形状的改变、凸块与通孔设置位置的改变等微小的变化也应该包括在本发明权利要求的保护范围内。
 工业实用性
本发明充电装置电晕栅的侧壁与导电片的第一侧壁上设有相互配合的第一定位机构与第二定位机构，电晕栅与导电片即可牢固地连接，避免导电片与电晕栅发生相对运动，确保导电片的供电稳定。从而使本发明感光鼓组件能保证毛刷获得稳定的直流电，使毛刷能干净地清除残留在感光鼓表面上的碳粉。

Claims (10)

  1. 充电装置，包括
    电晕栅及毛刷，所述电晕栅具有一个侧壁（31）以及与所述侧壁（31）邻接的下壁，所述下壁上设有多个栅格；
    位于所述电晕栅下壁上方的导电丝；
    导电片，所述导电片具有与所述电晕栅侧壁（31）对接的第一侧壁（41）以及通过连接壁与所述第一侧壁（41）连接的第二侧壁（42），所述第二侧壁（42）通过一电阻与所述毛刷连接；
    其特征在于：
    所述电晕栅的侧壁（31）上设有第一定位机构，所述导电片第一侧壁（41）上设有与所述第一定位机构配合定位的第二定位机构。
  2. 根据权利要求1所述的充电装置，其特征在于：
    所述第一定位机构为一通孔，所述第二定位机构为具有与所述通孔形状相同截面的凸块。
  3. 根据权利要求1所述的充电装置，其特征在于：
    所述第一定位机构为一具有连接截面的凸块，所述第二定位机构为与所述凸块连接截面形状相同的通孔。
  4. 根据权利要求2或3所述的充电装置，其特征在于：
    所述凸块为球冠状，所述通孔为圆孔，所述圆孔的直径与所述球冠的底面直径相等。
  5. 据权利要求2或3所述的充电装置，其特征在于：
    所述凸块为长方体，所述通孔为长方孔，所述方孔的长度及宽度与所述长方体连接截面的长度及宽度对应相等。
  6. 感光鼓组件，包括
    下框架，所述下框架内安装有感光鼓以及充电装置；
    上框架，所述上框架内安装有电晕栅及毛刷，所述电晕栅具有一个侧壁（31）以及与所述侧壁（31）邻接的下壁，所述下壁上设有多个栅格；
    位于所述电晕栅下壁上方的导电丝；
    导电片，所述导电片具有与所述电晕栅侧壁（31）对接的第一侧壁（41）以及通过连接壁与所述第一侧壁（41）连接的第二侧壁（42），所述第二侧壁（42）通过一电阻与所述毛刷连接；
    其特征在于：
    所述电晕栅的侧壁（31）上设有第一定位机构，所述导电片第一侧壁（41）上设有与所述第一定位机构配合定位的第二定位机构。
  7. 根据权利要求6所述的感光鼓组件，其特征在于：
    所述第一定位机构为一通孔，所述第二定位机构为具有与所述通孔形状相同截面的凸块。
  8. 根据权利要求6所述的感光鼓组件，其特征在于：
    所述第一定位机构为一具有连接截面的凸块，所述第二定位机构为与所述凸块连接截面形状相同的通孔。
  9. 根据权利要求7或8所述的感光鼓组件，其特征在于：
    所述凸块为球冠状，所述通孔为圆孔，所述圆孔的直径与所述球冠的底面直径相等。
  10. 根据权利要求7或8所述的感光鼓组件，其特征在于：
    所述凸块为长方体，所述通孔为长方孔，所述方孔的长度及宽度与所述长方体连接截面的长度及宽度对应相等。
PCT/CN2010/079488 2009-12-24 2010-12-07 充电装置及感光鼓组件 WO2011076061A1 (zh)

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CN201600555U (zh) * 2009-12-24 2010-10-06 珠海天威飞马打印耗材有限公司 充电装置及感光鼓组件

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GB1496239A (en) * 1974-12-09 1977-12-30 Xerox Corp Automatic charge control for reproduction machines
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JP2001159839A (ja) * 1999-06-22 2001-06-12 Brother Ind Ltd 画像形成装置及びプロセスカートリッジ
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CN201340516Y (zh) * 2008-11-19 2009-11-04 珠海天威飞马打印耗材有限公司 充电辊导电片和具有该导电片的显影剂盒
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