JPH0157347B2 - - 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 improvements.

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 it is strong, the weak parts will cause insufficient cleaning, and the strong parts will cause the front or back surface of the recording medium to wear or scrape. This causes deterioration in the strength of the recording medium, deterioration in recording characteristics, and the like.
Furthermore, even if the pressure contact force can be set uniformly, the back surface of the recording medium is constantly scraped slightly by the opposing member that is pressed 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. lower,
Both slip, making it difficult to drive the recording medium reliably.

An object of the present invention is to improve the prior invention by maintaining a uniform pressure contact force between a cleaning member and the surface of a recording medium with a simple configuration, and to prevent abrasion or damage to the back surface of the recording medium. Our goal is to provide the following. The above object of the present invention is achieved by providing a short-haired brush on the surface of the opposing member in contact with the back surface of the recording medium in the prior invention.

Hereinafter, the present invention will be explained 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 plate 6, and driven in the direction of the arrow. A charging device, an exposure device, a developing device, a transfer device, a static eliminating device, etc. (not shown) are arranged around the recording body belt 3, and the magnetic colored particles, which are the developer remaining on the surface of the recording body after transfer, are removed after the static electricity is eliminated. , scraped off by the brush on the surface of the sleeve 1. The scraped magnetic colored particles are held by the magnetic attraction force of the magnet in the sleeve 1, and
is conveyed upward by the rotation of the magnetic roller 7.
After being transferred to the scraper 8, it is scraped off by the scraper 8,
It is conveyed to a predetermined position by the screw conveyor 9.

The part of the support guide plate 6 facing the sleeve 1 is formed into a shallow recess, and a plate-shaped magnetic material 10 is placed in the recess.
is simply placed. This magnetic body 10 may be a magnet with a polarity opposite to that of the magnet in the sleeve 1 facing the magnetic body 10, and the surface of the magnetic body 10 that comes into contact with the recording belt 3 has short sections similar to the surface of the sleeve 1. A bristle brush 11 is provided. This short hair brush 11
The hairs may be directly planted on the magnetic body 10 by the method described above, or cloth or other flocking member having fibers may be attached to the magnetic body 10. By configuring the cleaning member 1, recording body 3, and opposing member 10 in this way,
The magnetic body 10 is attracted by the magnetic attraction force of the magnet in the sleeve 1 facing the magnetic body 10, and the recording body 3 is brought into pressure contact with the surface of the sleeve 1 via the short-haired brush 8. Therefore, even if the surface of the magnetic body 10 has poor flatness, the cushioning effect of the short-haired brush 11 allows the recording medium 3 to be evenly pressed against the surface of the sleeve 1.

Also, since the relatively soft short-haired brush 11 is in contact with the back surface of the recording medium instead of the hard magnetic material 10,
The back surface of the recording body is less likely to be worn or scraped, the life of the recording body 3 is extended, and the recording characteristics are also stabilized.

FIG. 2 shows another embodiment of the invention.

In this embodiment, the recording medium support guide plate 6 is movable in the vertical direction and is flat, and the short-bristle brush 11 is provided at a portion of the support plate 6 facing the sleeve 1, and is made of a magnetic material. 10 is glued to the back side. Therefore, magnetic material 1
0, together with the supporting plate 6, are attracted by opposing magnets of the sleeve 1, and the recording medium 3 is pressed against the surface of the sleeve 1 by a brush 11.

In this invention, short bristle brushes made of various materials can be provided on the opposing member depending on the strength, weight, etc. of the recording medium. For example, in addition to synthetic fibers such as nylon and rayon, natural fibers such as cotton and wool, and mineral fibers such as carbon, glass, and metal can be used. Further, although it is not necessarily necessary to flock 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.

This invention not only arranges the magnetic material serving as the opposing member or the recording material support plate holding the magnetic material so as to be movable so as to be attracted to a magnet disposed above, but also fixes the magnetic material etc. in a fixed manner. Place it in
It also includes disposing the upper cleaning member containing a magnet therein so that it is movable or both of them are movable, and can be modified in various ways by applying the techniques shown in the prior invention and publicly known techniques. It is something.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram showing one example of a recording body cleaning device according to the present invention, and FIG. 2 is a schematic diagram showing another example of the recording body cleaning device according to the present invention. DESCRIPTION OF SYMBOLS 1...Nonmagnetic sleeve, 2...Magnet, 3...Recording belt, 4, 5...Recording belt drive roller, 6...Recording belt support plate, 7...Magnetic roller, 8...Scraper, 9... Screw conveyor, 10... Magnetic material, 11... Short hair brush.

Claims (1)

[Scope of Claims] 1. A rotating body capable of generating a magnetic field on the surface of the recording body for removing magnetic colored particles remaining on the surface of the recording body; A recording body cleaning device comprising a magnetic body or a magnet having a short-bristle brush on a side that contacts the recording body, wherein at least one of the rotating body, the magnetic body, or the magnet is substantially movable. A recording body cleaning device characterized in that the recording body is sandwiched between the rotary body and a magnetic body or a magnet by the magnetic force between the brushes. 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.