JPS6223080A - Cleaning device for electronic copying machine - Google Patents

Abstract

PURPOSE:To satisfactorily maintain a cleaning effect, and also to prevent the inside of a copying machine from being contaminated, by providing a projection which interferes with a carrying means, on a part of a seal member, and giving a vibration to the seal member by a carrying operation of a carrying means, so that a toner is not accumulated on the seal member. CONSTITUTION:A seal member 5 for preventing a toner scraped down by a blade from the surface of a photosensitive body 2, from leading out to the outside of a housing is supported by a bracket 7. On the bracket 7, a roughly trapezoidal projection 7a is provided projectingly toward a carrying means 8 such as an auger, etc., and in case of a carrying operation by a rotation of the carrying means 8, the projection 7a is pushed against the outside peripheral part 8 of a fin 8b which has been provided spirally on a shaft part 8a, therefore, the bracket 7 turns in the direction as indicated with an arrow centering around a pin 6. Accordingly, the seal member 5 which has been attached to the bracket 7 is vibrated, therefore, a toner is prevented from being accumulated on the seal member 5, and also it does not occur that a gap is formed between the seal member 5 and the photosensitive body 2 due to weight of the toner.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention This invention relates to a cleaning device for an electronic copying machine that cleans untransferred toner remaining on the surface of a photoreceptor.

2. Description of the Related Art As a conventional cleaning device for an electronic copying machine, the one shown in FIG. 5, for example, is known. The cleaning device has a blade C that comes into contact with the photoreceptor at the opening of the housing α and scrapes off untransferred toner remaining on the surface of the photoreceptor.

In addition, the toner scraped off from the surface of the photoreceptor is placed on the lower edge of the blade C through the opening of the nousing α and the housing α.
A film-like sealing member d is provided to prevent toner from leaking out and at the same time guide the toner to the inside of the nousing α. The seal member d is installed at an angle in advance to facilitate the toner sliding down, but when the fluidity of the toner is poor, such as during high temperature and high humidity, toner may accumulate on the seal member d.

As the number of copies increases, the toner accumulated on the seal member d increases in height and reaches the blade C, reducing the cleaning function of the blade C and causing the tip of the seal member d to move closer to the surface of the photoreceptor due to the weight of the toner. Separation occurs and the sealing effect decreases.
Problems such as the inside of the copying machine becoming stained with toner occur.

In order to improve the above-mentioned problem, a cleaning device has also been proposed in which a part of the sealing member is shaped like a comb so that the toner can easily slide off due to the vibration of the sealing member.

Problems to be Solved by the Invention However, when a part of the sealing member is shaped like a comb, the sealing member itself vibrates, and when it vibrates, the toner scatters in the form of smoke, which reduces the effect of preventing stains inside the copying machine. There were problems such as not only was there no surplus, but also the processability of the sealing member was poor, resulting in high costs.

This invention was made for the purpose of improving the above-mentioned problems.

Means and Action for Solving Problems Untransferred toner remaining on the surface of the photoreceptor is scraped off with a blade and collected into the housing by a sealing member, and the collected toner is transported outside the housing by a conveying means. An electronic copying device that is transported to an electronic copying machine, in which a part of the sealing member is provided with a protrusion that interferes with the conveying means, and vibration is applied to the sealing member by the conveying operation of the conveying means, thereby preventing toner from accumulating on the sealing member. Machine cleaning equipment.

Embodiment An embodiment of the present invention will be described in detail with reference to the drawings. In the figure, reference numeral 1 denotes a main body of the cleaning device, which has a housing 3 that is open on the side of a photoreceptor 2 provided in an electronic copying machine (not shown).

A blade 4 is provided in the opening 3α of the housing 3 in contact with the surface of the photoreceptor 2 to scrape off untransferred toner remaining on the surface. A sealing member 5 is provided in contact with the surface of the housing 3 to prevent the toner scraped off by the plate 4 from leaking out from the lower opening of the housing 3 and to allow the scraped toner to slide down inside the housing 3. It is being The seal member 5 has a film shape, and its tip end is pressed against the surface of the photoreceptor 2 by its own elasticity and a biasing means (not shown), and the proximal end of the seal member 50 is
It is fixed to a bracket 7 which is rotatably supported by a pin 6.

A conveying means 8 such as an auger for conveying the toner collected in the nozzle blower 3 to the outside of the towing ring 3 is installed at the inner bottom of the housing 3. The carrying out means g has a structure in which fins 8b are spirally provided on a shaft part 8α which is rotated in a fixed direction by a drive system (not shown). Along with being transported outside,
A substantially trapezoidal projection 7cL projects from the bracket 7 that supports the seal member 5 toward the conveyance means 8. The tip of this protrusion 7α protrudes further from the outer circumference of the fin εb toward the shaft portion 8α side, and as the shaft portion 8α rotates, the fin 8bK moves downward as shown in FIG. 3H) and (B)K. When the fin 8b is pushed and the fin 8b passes, the
As shown in (b), it returns to its original state. This allows the bracket 7 to rotate around the pin 6, thereby imparting vibration to the seal member 5 attached thereto.

Note that even if the bracket 7 is rotated counterclockwise with the protrusion 7α in contact with the fin 8b, the tip of the sealing member 5 should not be separated from the surface of the photoreceptor 2 in advance.
The nip amount of the seal member 5 shall be set as follows.

Effects of the Invention As detailed above, this invention is as follows:
9) Since the sealing member 5 is vibrated by the conveying means 8 for conveying the toner, untransferred toner scraped off from the surface of the photoreceptor 2 by the plate 4 does not accumulate on the sealing member 5. As a result, a good leaning effect can be maintained for a long period of time, and there is no need to process a part of the seal member 5 into a comb shape to vibrate the seal member 5 itself. ,
It is also possible to solve problems such as toner scattering and staining the inside of the copying machine, and high processing costs.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a cross-sectional view, and FIG. 2 is a cross-sectional view of FIG. , (b) is an action explanatory diagram, 5th
The figure is a conventional explanatory diagram. 2 is a photoreceptor, 3 is a housing, 4 is a blade, 5 is a sealing member, 7α is a protrusion, and 8 is a delivery means.

Claims (1)

[Claims] In the device in which untransferred toner remaining on the surface of the photoconductor 2 is scraped off by the plate 4, and collected into the housing 3 by the sealing member 5, and the collected toner is transported out of the housing 3 by the transporting means, the above-mentioned A part of the sealing member 5 is provided with a protrusion that interferes with the conveyance means 7,
A cleaning device for an electronic copying machine in which vibration is applied to a seal member 5 by a carrying-out means 8.