JPH0143728Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is a prior invention "recording body cleaning device" (Japanese Patent Application No. 56-51578) by the same applicant as the present application.
Regarding the improvement of

The prior invention includes a rotating body capable of generating a magnetic field on the surface of the recording medium for removing magnetic colored particles remaining on the surface of the recording medium, and a magnetic body or a magnet facing the rotating body through the recording medium. A recording body cleaning device comprising: a recording body cleaning device, wherein at least one of the rotating body, the magnetic body, or the magnet is disposed so as to be substantially movable; The gist is that the two are held together by the magnetic attraction between the two. With this configuration, the contact between the rotating body as a cleaning member and the surface of the recording medium becomes uniform, and not only good cleaning is possible, but also the cleaning device has a simple structure and is easy to manufacture and assemble. is obtained.

However, in the prior invention, in order to maintain uniform pressure contact between the cleaning member and the surface of the recording medium, the contact surface of the opposing member with the back surface of the recording medium must be processed with high precision.
If the flatness of the facing member is poor, there will be parts where the pressing force is weak and parts where the pressure is strong.In the weak parts, cleaning will be insufficient, and in the strong parts, the front or back surface of the recording medium will be worn or scraped. This causes deterioration in the strength of the recording medium, deterioration in recording characteristics, and the like. Furthermore, even if the pressing force can be set uniformly, the back surface of the recording medium is constantly scraped slightly by the opposing member that presses against it, and the shavings adhere to the surface of the recording body drive roller, reducing the coefficient of friction between the recording body and the recording body. This causes both to slip, making it difficult to drive the recording medium reliably.

The purpose of this invention is to improve the prior invention to maintain a uniform pressure contact force between the cleaning member and the surface of the recording medium with a simple configuration, and to prevent wear or damage on the back surface of the recording medium. Our goal is to provide the following. The above-mentioned object of this invention is to form the opposing member in the prior invention into a roller shape, to swingably support the supporting member that supports the rotating shaft, and to rotate the supporting member following the movement of the recording medium. This is achieved by configuring the device to

This invention will be explained below with reference to the accompanying drawings. In FIG. 1, a rotating body 1, which is a cleaning member, is a non-magnetic sleeve with short-bristle brushes made of nylon, rayon, or the like implanted on its surface, and a plurality of magnets 2 are statically housed inside the sleeve. Flocking onto a non-magnetic sleeve is carried out, for example, by first applying an adhesive to the surface of the sleeve and spraying short hair fibers thereon, aligning the direction of the hairs, as is conventionally known. Brush bristles are 0.3~
Apply this brush 0.1 mm to the surface of the recording medium 3 with a width of about 1.0 mm.
Make sure to dig in about ~0.5mm and insert sleeve 1.
is held on the recording body 3. Belt-shaped recording body 3
is stretched between two belt drive rollers 4 and 5, guided by a belt support guide plate 6, and driven in the direction of the arrow. Around the recording belt 3,
A charging device, an exposure device, a developing device, a transfer device, a static eliminator, etc. (not shown) are arranged, and the magnetic colored particles, which are the developer remaining on the surface of the recording medium after the transfer, are removed by the brush on the surface of the sleeve 1 after the static electricity is removed. scraped off. The scraped magnetic colored particles are removed from sleeve 1.
It is attracted to the surface of the sleeve 1 by the magnetic attraction force of the magnet 2 inside, is conveyed upward by its rotation, is then transferred to the magnetic roller 7, and is transferred to the scraper 8.
After being scraped off by, it falls into the container 9,
It will be collected.

An opening 6a is formed in a portion of the support guide plate 6 facing the sleeve 1, through which a magnetic roller 10 is pressed against the sleeve 1 via the belt 3.

There are two types of pressure welding, one is
As shown in FIG. 2, a support plate 12 supporting the rotating shaft 1a of the sleeve 1 via a ball bearing 11 is
One corner of the magnetic roller 10 is rotatably supported on a side plate 6b of the belt support guide plate 6, and the magnetic roller 10 is rotatably supported around a shaft 13 as a fulcrum. By doing this, the sleeve and the magnetic roller 10 are pulled together by the recording belt 3 mainly due to the weight of the sleeve 1 and the assembly that supports it, and to some extent due to the magnetic attraction force of the magnet inside the sleeve 1.
Pressure-weld through. In this case, between the rotating shaft 1a of the sleeve 1 and the support plate 12, or between the fulcrum shaft 13
It is more preferable to provide an appropriate play between the sleeve 1 and the support plate 12, since the surface of the sleeve 1 will come into pressure contact with the surface of the magnetic roller 10.
In this embodiment, by considering the position of the fulcrum 13, the sleeve 1 is
can be moved toward the magnetic roller 10 side. That is, the sleeve 1 is
When the roller 0 is not attached, it is kept floating from the belt 3, and it is moved to the magnetic roller side only when the magnetic roller 10 is attached.

In the other embodiment, as shown in FIG. 3, the support plate 12 that supports the sleeve 1 is fixed, and the magnetic roller 10 is mounted on the swing support plate 14 with its rotating shaft 10a outside the belt support guide side plate 6b. This swing support plate 14 is rotatably attached to one end of the
The other end is rotatably attached to the side plate 16b by a stepped screw 15, thereby making it swingable. Reference numeral 16 is a stopper for stopping the swing support plate 14 from rotating downward. By doing this, the magnetic roller 10 is lifted upward by the magnetic attraction force of the magnet in the sleeve 1,
It is pressed against the sleeve 1 via the belt 3. At this time, if an appropriate play is provided between the rotating shaft 10a of the magnetic roller 10 and the swinging support plate 14, or between the swinging support plate 14 and the stepped screw 15, the magnetic roller 10 can be moved. , which is more preferable because it comes into pressure contact with the surface of the sleeve 1. In this case, it is preferable that the magnetic roller 10 and the swing support plate 14 be made of a material as light as possible so that the magnetic roller 10 can move upward against its gravity, and the magnetic roller 10 is made of a thin-walled pipe. It is preferable to form it into a shape.

Roller-shaped opposing member 10 in this invention
Since it is easy to cut and polish, it is easier to achieve flatness (linearity in the case of a roller) at the contact surface with the recording belt 3 than a conventional plate-shaped opposing member. Therefore, the contact pressure of the recording belt 3 against the surface of the sleeve 1 can be made uniform in its length direction, and good cleaning can be performed. Further, since the sleeve 1 and the magnetic roller 10 that are in pressure contact with the recording belt 3 are rotatably held by the respective support plates 12 and 14, they are driven to rotate following the moving recording belt 3, thereby recording Friction with the back surface of the body belt 3 is reduced, and there is almost no wear or abrasion of the recording body belt. Therefore, the durability of the recording belt is improved and the recording characteristics are also stabilized.

In this invention, if a cushion material such as felt, rubber, foamed resin, or foamed fiber is provided on the surface of the magnetic roller 10, the pressing force of the recording medium against the surface of the sleeve 1 can be made more uniform. Moreover, in order to make the driven rotation of the magnetic roller by the recording medium smoother, the magnetic roller can be held via a bearing. Also,
Although it is not necessarily necessary to have bristles on the surface of the sleeve, which is a cleaning member, brushes on the surface have a higher cleaning effect and reduce wear on the recording medium.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing an example of a recording body cleaning device according to this invention, FIG. 2 is a schematic diagram showing main parts of a recording body cleaning device according to this invention, and FIG. 3 is a diagram showing a recording body cleaning device according to this invention. FIG. 3 is a schematic diagram showing another main part of the device. DESCRIPTION OF SYMBOLS 1... Non-magnetic sleeve, 2... Magnet, 3... Recording belt, 4, 5... Recording belt drive roller, 6... Recording belt support guide plate, 10... Magnetic roller, 12... Sleeve support plate, 14...
...Magnetic roller support plate.

Claims (1)

[Claims for Utility Model Registration] 1. A rotating body capable of generating a magnetic field on the surface of the recording body to remove magnetic colored particles remaining on the surface of the recording body, and facing the rotating body with the recording body interposed therebetween. A recording body cleaning device having a rotatable magnetic roller, wherein at least one of the rotating body or the magnetic roller is swingably supported by a support member that supports a rotation axis thereof. A recording body cleaning device characterized in that the recording body is held between the rotating body and the magnetic roller, and the magnetic roller is driven to rotate following the movement of the recording body. 2. The recording medium cleaning device according to claim 1, wherein the rotating body is a non-magnetic sleeve that statically houses a magnet therein and has a short-bristle brush on its surface.