WO2013075411A1 - 一种打印机控粉结构 - Google Patents

一种打印机控粉结构 Download PDF

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Publication number
WO2013075411A1
WO2013075411A1 PCT/CN2012/071152 CN2012071152W WO2013075411A1 WO 2013075411 A1 WO2013075411 A1 WO 2013075411A1 CN 2012071152 W CN2012071152 W CN 2012071152W WO 2013075411 A1 WO2013075411 A1 WO 2013075411A1
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control structure
bracket
structure according
powder control
metal
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PCT/CN2012/071152
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English (en)
French (fr)
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曹国柱
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珠海市奔码打印耗材有限公司
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Publication of WO2013075411A1 publication Critical patent/WO2013075411A1/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
    • G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
    • G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
    • G03G15/0806—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer on a donor element, e.g. belt, roller
    • G03G15/0812—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer on a donor element, e.g. belt, roller characterised by the developer regulating means, e.g. structure of doctor blade

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  • the invention relates to a powder controlling device, in particular to a powder controlling structure for use in a printer toner cartridge.
  • bounce development is a commonly used development method (as shown in Figure 1), which has the advantages of good print quality, low torque and high stability. Especially in the high-end monochrome printing has a clear advantage.
  • the magnetic roller is composed of an aluminum tube and a magnetic core contained in the tube. During operation, due to the action of the magnetic core, the magnetic toner is adsorbed in a large amount.
  • the toner On the surface of the aluminum tube, as the aluminum tube rotates (the core is fixed), when it is transferred to the position of the rubber strip, the toner will form a uniform layer of carbon powder on the surface of the aluminum tube due to the extrusion, and at the same time, due to friction, The toner will be charged with a certain negative charge, and the machine will apply a certain bias to the surface of the aluminum tube, so that the carbon powder on the surface of the aluminum tube will jump back and forth on the surface of the aluminum tube under the action of magnetic field and electric field force.
  • the photosensitive drum When the photosensitive drum is facing right, the charged toner on the photosensitive drum is adsorbed to the latent image area of the photosensitive drum to complete the development, and the above process is a process of jumping development.
  • the charge level of the toner plays a decisive role in the quality of the final print.
  • the charging of toner is caused by the friction between the toner and the rubber strip.
  • the rubber strips are generally made of PU (polyurethane) material, due to the actual use. Insufficient charge, often problems such as light print color, blackness attenuation, and bottom ash.
  • the present invention provides a powder control device with high frictional charging and good powder control stability, thereby avoiding light color, blackness attenuation, bottom ash, etc. caused by insufficient toner charge. problem.
  • a printer powder control structure is characterized in that it comprises a support member disposed in the toner cartridge and a metal friction member in contact with the developing member, and an elastic mechanism is disposed between the metal friction member and the support member.
  • the metal friction member is a metal foil.
  • the metal friction member is a metal roller.
  • the elastic mechanism is a rubber layer.
  • a first rubber strip is disposed on the support member.
  • the elastic mechanism is a compression spring.
  • the support member includes a first bracket and a second bracket.
  • the metal roller is pivotally disposed in the first bracket, and two ends of the compression spring are respectively connected to the first bracket and the second bracket.
  • the cross section of the inner surface of the first bracket is an arc, and the arc is longer than a semicircular arc.
  • a knife holder is disposed in the toner cartridge, and a second rubber strip is disposed on the knife holder.
  • the invention has the beneficial effects of including a support member disposed in the toner cartridge and a metal friction member contacting the developing member, and the elastic member is disposed between the support member and the metal friction member, so that the printer is adsorbed on the aluminum tube during operation.
  • the carbon powder on the surface can pass a higher charge amount on the friction belt of the metal friction member, and the charged carbon powder can form a uniform layer on the surface of the aluminum tube by the pressing action of the elastic mechanism, thereby controlling powder stability.
  • the carbon powder acting through the above structure not only has a higher charge amount, but also stabilizes the powder control, thereby avoiding problems such as light color, blackness attenuation, and bottom ash caused by insufficient toner charge.
  • FIG. 1 is a schematic view of a powder control device of the old structure of the present invention
  • Figure 2 is a schematic cross-sectional view of the first embodiment
  • Figure 3 is a schematic cross-sectional view showing another structure of the first embodiment.
  • Figure 4 is a schematic cross-sectional view of a second embodiment
  • Figure 5 is a cross-sectional view showing another direction of the second embodiment
  • Figure 6 is a schematic cross-sectional view showing another structure of the second embodiment.
  • the present invention discloses a printer powder control structure, comprising a support member 1 disposed in a toner cartridge and a metal friction member 4 contacting the developing member 2, and the metal friction member 4 is disposed between the metal member 4 and the support member 1.
  • Flexible mechanism 3
  • the metal friction member 4 is a metal foil
  • the elastic mechanism 3 is a rubber layer.
  • the charged carbon powder can be formed on the surface of the aluminum tube by the pressing action of the rubber layer.
  • a uniform layer to control powder stability, and the elastic force of the rubber layer can maintain the friction between the foil and the toner within a suitable range.
  • the metal foil is integrated with the rubber layer by means of bonding, but the above-mentioned mounting manner does not constitute a limitation of the present invention, and the above structure can also be fixed by screws, but the screw fixing not only affects the elasticity of the rubber layer, but also the process. It is more complicated than pasting.
  • the elastic mechanism 3 is a rubber layer, and the rubber material can be a sponge foam rubber or a soft solid rubber.
  • the elastic mechanism 3 can also have various options such as a polyurethane layer and a nylon layer. As long as the same similar effects can be achieved in this application.
  • FIG. 3 is another structure of the first embodiment.
  • the structure shown in this figure is different from the structure of FIG. 2 in that the first rubber strip 7 is disposed on the support member 1.
  • the structure first forms a uniform carbon powder layer by the pressing action of the first rubber strip 7, and carries a low electric quantity, and then the higher charge amount of the friction band of the metal foil 3 and further uniformizes the carbon powder layer, thereby controlling the powder.
  • Stable when the aluminum tube is rotated to face the photosensitive drum, under the action of the electric field force and the magnetic field force, the charged toner on the aluminum tube is adsorbed to the latent image area of the photosensitive drum, thereby completing the development.
  • the support member 1 includes a first bracket and a second bracket.
  • the first bracket is internally provided with a metal roller in contact with the developing member 2, and the metal roller can be used.
  • the solid stick can also adopt a hollow tube, and a compression spring connecting the first bracket and the second bracket is disposed between the first bracket and the second bracket.
  • the inner surface of the first bracket is a smooth surface
  • the metal roller can rotate freely in the first bracket
  • the cross-sectional contour of the first inner surface is an arc.
  • the circular arc length is greater than a semi-arc.
  • the elastic mechanism 3 is a compression spring.
  • the compression spring By the action of the compression spring, the charged carbon powder can form a uniform layer on the surface of the aluminum tube, thereby controlling powder stability, and compressing the spring.
  • the elastic force can maintain the friction between the metal roller and the carbon powder within a suitable range.
  • the above is a preferred embodiment of the present invention and does not limit the present invention.
  • the present invention can also be achieved by using an elastic element such as a torsion spring or a leaf spring or an elastic structure. The same or similar purpose.
  • FIG. 6 is another structure of the second embodiment.
  • the structure shown in this figure is different from the structure shown in FIG. 4 and FIG. 5 in that a cartridge 5 is disposed in the toner cartridge.
  • the tool holder 5 is provided with a second rubber strip 6 which first forms a uniform carbon powder layer by the pressing action of the second rubber strip 6, and is charged with a low electric quantity, and then the friction belt of the metal roller 4 is higher. The charge amount and the toner layer are further uniformed, so that the powder control is more stable.
  • the charged toner on the aluminum tube is adsorbed to the photosensitive drum under the action of the electric field force and the magnetic field force. The latent image area, thus completing the development.
  • a third embodiment which differs from the second embodiment in that the metal friction member 4 employs a metal foil.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Dry Development In Electrophotography (AREA)
  • Electrophotography Configuration And Component (AREA)

Abstract

一种打印机中的显影剂层厚调节装置，包括设置于硒鼓中的支撑件（1），与显影部件（2）相接触的显影剂层厚调节件（4），该显影剂层厚调节件（4）是金属的，该支撑件（1）与显影剂层厚调节件（4）间设有弹性机构（3）。

Description

一种打印机控粉结构
技术领域
本发明涉及一种控粉装置，特别是一种用于打印机硒鼓中的控粉结构。
背景技术
在激光打印机中，跳动显影是一种常用的显影方式(如图1所示)，它具有打印品质好、扭矩小、稳定性高等优点。特别是在中高端单色打印中具有明显优势。
目前惠普和佳能的单色激光打印机都采用此种模式，其工作原理如下：其磁辊由铝管及管内装有的磁芯组成，工作时由于磁芯的作用，磁性碳粉会大量吸附在铝管表面，随着铝管转动（磁芯固定不动），当转到橡胶条位置时，由于受到挤压，碳粉会在铝管表面形成一层均匀的碳粉层，同时由于摩擦，会使碳粉带上一定的负电荷，而机器会给铝管表面施加一定的偏压，使铝管表面的碳粉在磁场力及电场力的作用下在铝管表面来回跳动，铝管与感光鼓正对时，其上的带电碳粉会被吸附到感光鼓的潜像区，从而完成显影，上述过程为跳动显影的过程。
在此显影过程中，碳粉的带电高低对最终打印的品质起决定性作用。目前在惠普和佳能的使用跳动显影的打印机中，碳粉的带电都是依靠碳粉与橡胶条的摩擦产生的，橡胶条材片一般都采用PU（聚氨酯）材质构成，在实际使用过程中由于带电量不足，经常会出现打印色浅，黑度衰减以及底灰等问题。
发明内容
为了克服现有技术的不足，本发明提供一种摩擦带电高，控粉稳定性好的控粉装置，从而避免了因碳粉带电量不足而引起的打印色浅，黑度衰减以及底灰等问题。
本发明解决其技术问题所采用的技术方案是：
一种打印机控粉结构，其特征在于：包括设置于硒鼓中的支称件及与显影元件相接触的金属摩擦件，该金属摩擦件与支称件间设有弹性机构。
所述金属摩擦件为一金属薄片。
所述金属摩擦件为一金属辊。
所述弹性机构为一橡胶层。
所述支称件上设有第一橡胶条。
所述弹性机构为一压缩弹簧。
所述支称件包括第一支架及第二支架，所述金属辊枢设于第一支架内，所述压缩弹簧的两端分别与第一支架及第二支架连接。
所述第一支架内表面的横截面为圆弧，且该圆弧弧长长于半圆弧。
所述硒鼓中设有刀架，刀架上设有第二橡胶条。
本发明的有益效果是：包括设置于硒鼓中的支称件及与显影元件相接触的金属摩擦件，该支称件及金属摩擦件间设有弹性机构，因而打印机工作时，吸附在铝管表面的碳粉能够通过金属摩擦件的摩擦带上更高的带电量，通过弹性机构的挤压作用，带电碳粉能够在铝管表面形成均匀的一层，从而控粉稳定。
因而，通过上述结构作用的碳粉不仅具有更高的带电量，而且控粉稳定，从而避免了因碳粉带电量不足而引起的打印色浅，黑度衰减以及底灰等问题。
附图说明
下面结合附图和实施例对本发明进一步说明。
图1是本发明旧有结构的控粉装置示意图；
图2是第一具体实施例的剖面示意图；
图3是第一具体实施例的另一种结构的剖面示意图。
图4是第二具体实施例的剖面示意图；
图5是第二具体实施例的另一方向的剖面示意图；
图6是第二具体实施例的另一种结构的剖面示意图。
具体实施方式
参照图2，本发明公开了一种打印机控粉结构，包括设置于硒鼓中的支称件1及与显影元件2相接触的金属摩擦件4，该金属摩擦件4与支称件1间设有弹性机构3。
如图2所示，于本第一具体实施例中，金属摩擦件4为一金属薄片，弹性机构3为一橡胶层，通过橡胶层的的挤压作用，带电碳粉能够在铝管表面形成均匀的一层，从而控粉稳定，而且橡胶层的弹力可以使金属薄片与碳粉间的摩擦力保持在合适的范围内。为了达到方便安装，金属薄片通过粘贴的方式与橡胶层结合为一体，但是上述安装方式并不构成对本发明的限制，上述结构也可通过螺钉固定，但是螺钉固定不仅影响橡胶层的弹性，而且工艺上比粘贴复杂。
如图所示，弹性机构3为一橡胶层，橡胶材质可以采用海绵发泡类橡胶，也可采用柔软的实体橡胶，当然弹性机构3还可以有多种选择如：聚氨酯层、尼龙层等，只要能够达到本实用相同相似的效果都可以。
如图3所示，图3是第一具体实施例的另一种结构，本图例所示的结构与图2的结构相比区别在于：支称件1上设有第一橡胶条7，该结构先通过第一橡胶条7的挤压作用形成均匀的碳粉层，带上低电量，再通过金属薄片3的摩擦带上更高的带电量及进一步使碳粉层均匀，因而控粉更稳定，当铝管转动到与感光鼓正对时，在电场力与磁场力作用下，铝管上的带电碳粉会被吸附到感光鼓的潜像区，从而完成显影。
参照图4、图5，于本第二具体实施例中，支称件1包括第一支架及第二支架，第一支架内枢设有与显影元件2相接触的金属辊，金属辊可以采用实心棍也可采用空心管，且第一支架及第二支架间设有连接第一支架及第二支架的压缩弹簧。
如图4、图5所示，于本具体实施例中，第一支架内表面为光滑表面，金属辊能够在第一支架内自由转动，第一支内表面的横截面轮廓线为圆弧，且该圆弧弧长大于半圆弧，通过上述结构，金属辊能够从第一支架的开口处卡入，而又不易从第一支架内脱出，从而达到制造简单，安装方便的目的。
如图所示，于本具体实施例中，弹性机构3为压缩弹簧，通过压缩弹簧的挤压作用，带电碳粉能够在铝管表面形成均匀的一层，从而控粉稳定，而且压缩弹簧的弹力能够使金属辊与碳粉间的摩擦力保持在合适的范围内，上述为本发明的优选，并不对本发明构成限制，本发明也可采用扭簧、板簧等弹性元件或弹性结构达到相同或相似的目的。
如图6所示，图6是本第二具体实施例的另一种结构，本图例所示的结构与图4及图5所示的结构相比区别在于：硒鼓中设有刀架5，该刀架5上设有第二橡胶条6，该结构先通过第二橡胶条6的挤压作用形成均匀的碳粉层，带上低电量，再通过金属辊4的摩擦带上更高的带电量及进一步使碳粉层均匀，因而控粉更稳定，当铝管转动到与感光鼓正对时，在电场力与磁场力作用下，铝管上的带电碳粉会被吸附到感光鼓的潜像区，从而完成显影。
本发明中，除了第一和第二具体实施例外，还有第三具体实施例，第三具体实施例与第二具体实施例的不同之处在于：金属摩擦件4采用了金属薄片。通过上述结构也能使吸附在铝管表面的碳粉带上更高的带电量，从而达到与第二具体实施例中的结构所达到的效果相同或相近。
上述只是对本发明的一些优选实施例进行了图示和描述，但本发明的实施方式并不受上述实施例的限制，只要其以基本相同的手段达到本发明的技术效果，都应属于本发明的保护范围。

Claims (9)

  1. 一种打印机控粉结构，其特征在于：包括设置于硒鼓中的支称件及与显影元件相接触的金属摩擦件，该金属摩擦件与支称件间设有弹性机构。
  2. 根据权利要求1所述的一种打印机控粉结构，其特征在于：所述金属摩擦件为一金属薄片。
  3. 根据权利要求1所述的一种打印机控粉结构，其特征在于：所述金属摩擦件为一金属辊。
  4. 根据权利要求2或3所述的一种打印机控粉结构，其特征在于：所述弹性机构为一橡胶层。
  5. 根据权利要求4所述的一种打印机控粉结构，其特征在于：所述支称件上设有第一橡胶条。
  6. 根据权利要求2或3所述的一种打印机控粉结构，其特征在于：所述弹性机构为一压缩弹簧。
  7. 根据权利要求6所述的一种打印机控粉结构，其特征在于：所述支称件包括第一支架及第二支架，所述金属辊枢设于第一支架内，所述压缩弹簧的两端分别与第一支架及第二支架连接。
  8. 根据权利要求7所述的一种打印机控粉结构，其特征在于：所述第一支架内表面的横截面为圆弧，且该圆弧弧长长于半圆弧。
  9. 根据权利要求8所述的一种打印机控粉结构，其特征在于：所述硒鼓中设有刀架，刀架上设有第二橡胶条。
PCT/CN2012/071152 2011-11-21 2012-02-15 一种打印机控粉结构 WO2013075411A1 (zh)

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CN113031416A (zh) * 2021-04-23 2021-06-25 中山市奔码打印耗材有限公司 激光打印机处理盒控粉结构

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JPH03174176A (ja) * 1989-09-29 1991-07-29 Ricoh Co Ltd 画像形成装置の圧接円筒部材対
JPH04343376A (ja) * 1991-05-21 1992-11-30 Konica Corp 現像装置
JPH10213972A (ja) * 1997-01-29 1998-08-11 Ricoh Co Ltd 現像装置
JP2965528B2 (ja) * 1997-06-05 1999-10-18 株式会社リコー 画像形成装置
CN202362589U (zh) * 2011-11-21 2012-08-01 珠海市奔码打印耗材有限公司 一种新型打印机控粉结构

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