JPH078861U - Brushes for cleaning copiers - Google Patents

Abstract

(57) [Summary] [Purpose] A cleaning brush for a copying machine, which can be manufactured at low cost and improves the reliability of the cleaning effect. [Constitution] On the surface of the roller 2, the fibers 3 for flocking ...
In this standing state, electrostatic flocking is applied and planted to construct. [Effect] The fibers 3 planted on the surface of the roller 2 have a soft feeling when the surface of the photoconductor is rubbed and also have a strong elasticity, so that there is no problem of friction and the cleaning effect is good and the reliability is high. In addition to obtaining a high fiber, the fiber 3 can be easily planted on the surface of the roller 2 by the electrostatic flocking process, and the production is easy and the cost can be provided at a low cost.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cleaning brush used in a cleaning device of a copying machine.

[0002]

[Prior art]

 In the cleaning of a copying machine, after transferring the toner image on the photoconductor to the recording paper, the toner remaining on the photoconductor that could not be completely transferred is removed and collected to make the photoconductor in an initial beautiful state. It is an important and indispensable process for returning to.

Known typical cleaning devices include an electrostatic brush cleaning system and a mag brush cleaning system that use static electricity, and a far brush cleaning system and a blur system that use mechanical action. Four methods, a docking method, are generally used.

Among the above-mentioned four methods, the blade cleaning method has the advantages of a smaller installation space and lower cost than the other three methods, but on the other hand, the life of the blade itself. Variation is large and the average life has not reached the required value in the field of high-speed machines, so cleaning defects are likely to occur, and once a cleaning defect occurs, it has a large impact on image quality. It lacks in properties and has not been used in the field of high-speed copying machines. For the reasons described above, the above-mentioned three brush methods are often used in the cleaning device.

In the above-mentioned cleaning by the brush method, the brush is pressed against the surface of the photoconductor at a required angle and pressure, and the residual toner adhered to the surface of the photoconductor due to the rubbing force between the brush and the surface of the photoconductor at that time. -And additives and paper fiber scraps, and in the case of a two-component phenomenon, carriers and the like will also be removed.

Toners and additives that have not been transferred to the recording paper and remain on the photoconductor are so strongly bound to the photoconductor that they cannot be cleaned if the pressing pressure of the brush is weak. Further, if the brush pressing pressure is too strong, the life of the brush will be shortened, and scratches may occur on the surface of the photoconductor.

Therefore, in the brush-type cleaning device, not only removal of toner, additives, etc., but also improvement of reliability, extension of brush life, adhesion of foreign matter to the surface of the photoconductor, and photoconductor The performance is required to prevent problems such as friction.

For that purpose, it is necessary that the fibers of the brush have a soft feeling and are firm and have a certain amount of pressure applied to the surface of the photoconductor to scrape off the residual toner and additives when the surface of the photoconductor is touched. Yes, and it must be restored to the standing state when it is separated from the surface of the photoconductor.

[0009]

[Problems to be solved by the device]

 However, conventional cleaning brushes do not meet the above-mentioned performance requirements of the brush, and thus not only lack cleaning reliability and durability, but also increase manufacturing costs. There are problems such as high cost.

The present invention has been made in view of the above-mentioned problems of the above-mentioned prior art, and can improve the reliability and durability of cleaning and can be manufactured at low cost. -To provide a brush for cleaning.

[0011]

[Means for Solving the Problems]

 In order to achieve the above object, the cleaning brush of the copying machine of the present invention is characterized in that a fiber for flocking is electrostatically flocked and planted on the surface of the roller in a standing state. There is.

[0012]

[Action]

 The brush is attached to the brush attachment portion of the cleaning device while applying a predetermined angle and a predetermined pressure to the surface of the photoconductor. When the brush is rotated in a predetermined direction by a drive source at a predetermined speed, many fibers that are planted on the roller surface in a standing state are rotated without being pressed against the surface of the photoconductor. It bends against resistance and returns to the standing state at the same time as it leaves the surface of the photoconductor.

That is, a large number of fibers are repeatedly brought into contact with and separated from the surface of the photoreceptor by the rotation, so that the fibers are repeatedly bent and raised. As a result, a soft feeling is obtained when rubbing the surface of the photoconductor, so that problems such as friction on the surface of the photoconductor do not occur, and the rubbing force causes residual toner and additives that adhere to the surface of the photoconductor. In addition to being able to remove, the elastic strength of the fiber scrapes off the residual toner, additives, and the like even when the fiber is erected and restored, so that good cleaning can be performed.

[0014]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. 1 shows a perspective view of a brush, and FIG. 2 shows an exploded perspective view of another embodiment of the brush.

As shown in FIG. 1, the brush 1 has a large number of fibers 3 for flocking on the surface of the roller 2 so that the fibers 3 stand upright from the surface of the roller 2. An adhesive (not shown) is applied to the surface of the roller 2 at one end, electrostatic flocking is performed, and glue is applied to the roller 2.

As shown in FIG. 2, the brush 1 is provided with a large number of fibers 3 ... on one side of a sheet 4 made of an appropriate material, which is vertically erected from the sheet 4 or the other side. As described above, one end of the sheet 4 is coated with an adhesive material, electrostatically flocked, and glued, and the surface of the roller 2 is wrapped with an adhesive material or the like. It can also be configured.

The fibers 3 ... are nylon fibers, tetron fibers, polyester fibers, etc., and have a T-shaped shape and a Y-shaped shape as shown in FIGS. An irregular cross-sectional shape such as a structure (not shown) is used. Further, it is preferable to impart conductivity to the fibers 3.

The above-mentioned fiber 3 having an irregular cross-section has a larger bending resistance, a stronger elasticity, and a larger restoring force than a fiber having a circular cross-section, and a large frictional force. The brush can sufficiently satisfy the required performance.

The fibers 3 ... Are densely and uniformly planted on the surface of the roller 2 at regular intervals. Further, in addition to the fiber 3 having the same irregular cross section, it is also possible to configure, for example, the central portion of the roller 2 and the outer portion thereof with different irregular cross sections or fibers with different irregular cross sections. Is.

Furthermore, it is also possible to appropriately mix and arrange fibers of various modified cross-sections to which conductivity is imparted.

[0021]

[Effect of device]

 Since the present invention is configured as described above, the fiber implanted on the roller surface has a softening effect when rubbing the surface of the photoconductor, and also has a strong rigidity, which results in a cleaning effect. A good and reliable product can be obtained, and since fibers can be easily planted on the roller surface by electrostatic flocking processing, it is easy to manufacture and can be provided at low cost.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a cleaning brush of a copying machine according to the present invention.

FIG. 2 is an exploded perspective view showing another embodiment of the above brush.

FIG. 3 is an enlarged cross-sectional view of the fiber for flocking of the brush.

FIG. 4 is an enlarged cross-sectional view of another embodiment of the fiber for flocking of the above brush.

[Explanation of symbols]

 1 Cleaning brush 2 Roller 3 Fiber

Claims (1)

[Scope of utility model registration request] 1. A brush for cleaning of a copying machine, wherein fibers for flocking are electrostatically flocked and planted on the surface of a roller in a standing state.