JP4028162B2 - Dry magnetic toner removal jig - Google Patents

Description

【００３６】
【発明の効果】
以上の説明で明らかなように、本発明の乾式磁性トナーの除去治具によれば、被清掃部材表面のトナーを簡便な作業で確実に除去することができ、しかも、この除去治具からのトナーの除去・回収も容易である。以下、請求項別の効果を説明する。
【００３７】
（１）本発明の除去治具では、密閉容器外からの操作による磁石の移動操作によって、密閉容器底部のシート材にトナーを吸着させた後、同じく磁石の移動操作によってトナーをシート材から自重で落下させて回収することができる。このように、この除去治具はトナーを磁石表面に直接吸着させるものではないから、吸着後のトナーの回収を極めて簡便・能率的に行うことができる。本発明の除去治具は特に、画像形成装置の現像ローラ表面に付着残留するトナーの除去に有効である。
【００３８】
（２）本発明の除去治具では磁石の移動を、所定の操作部材により支持部材を操作することで行うから、トナー除去作業の利便性が高まる。
【００３９】
（３）本発明の除去治具では、磁石としてゴム製の板状磁石を設けたので、前記シート材の表面（磁石との接触面）に傷をつける心配が殆どない。また、上記板状磁石を硬質の支持板に固定したので、該磁石を堅固に支持することができてその耐久性が向上する。さらに、ハンドル操作で上記磁石を移動させるようにしたので、作業の利便性が高まる。
【００４０】
（４）本発明の除去治具では、取っ手を握って移動・運搬することができるので、作業の利便性が更に高まる。
【００４１】
（５）本発明の除去治具では、ハンドル操作で板状磁石をシート材側に移動させたときに、コイルばねが圧縮されてその弾性力が生じるため、板状磁石の移動の程度や、板状磁石がシート材を介して被清掃部材の表面に接触したかどうかの手応えを感じとることができる。このため、トナー除去作業の確実性が高まる。また、シート材を被清掃部材表面に衝突させたり、シート材を被清掃部材表面に無理に押しつける危険性が低下するので、シート材・被清掃部材表面の双方の損傷防止効果が高まる。
【００４２】
（６）本発明の除去去治具は、密閉容器の殆ど全体がプラスチックからなるため軽いから、移動・運搬が容易である。また、蓋体が無色透明のプラスチックからなるので、容器内の状況を容易に観察することができる。
【図面の簡単な説明】
【図１】本発明の実施の形態に係るもので、乾式磁性トナーの除去治具の全体構造を示す概略正面断面図である。
【図２】比較例１の説明図である。
【図３】比較例２の説明図である。
【符号の説明】
１１ 密閉容器
１２ 板状磁石
１３ 引上げハンドル
１４ 取っ手
１５ シート材（底部）
１６ 容器本体
１７ 蓋体（カバー）
１８ 支持板
１９ 支持棒
２０ 押下げ部
２１ コイルばね
３１ 現像ローラ
５１ 磁石
６１ 薬包紙
６２ 破れ
７１ 筒状容器
７２ フランジ（鍔）
７３ プラスチックシート（底部）
７４ 周壁
１００ 乾式磁性トナー（現像剤）[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a dry magnetic toner removal jig, and more particularly to a jig for removing dry magnetic toner remaining on the surface of a developing roller of an image forming apparatus and cleaning the developing roller.
[0002]
[Prior art]
A developing roller for supplying the toner to the surface of the photosensitive member in a developing portion of an image forming apparatus (copier, facsimile, printer) that uses dry magnetic toner (hereinafter sometimes referred to as toner) as a developer Is deployed.
[0003]
For example, when the life of the toner supplied into the dry copying machine has expired or when a machine trouble has occurred in the dry copying machine, the developing roller may need to be replaced. Further, the removed developing roller may have to be cleaned by removing the toner remaining on the surface.
[0004]
However, unlike the case of removing dust or the like on the surface of a normal OA device, the surface of the developing roller has strong magnetism, so it is not easy to efficiently remove the toner attached to the surface.
[0005]
As a method for removing the toner on the surface of the developing roller, a method in which the toner is adsorbed and removed with a metal magnet having a strong magnetic force can be considered. However, this method is good up to toner removal, but it becomes very difficult to remove and collect the toner adsorbed on the magnet. In addition, as a method of removing the toner adsorbed to the magnet, a method of suctioning and removing with a powerful vacuum cleaner is conceivable, but since the toner agent has magnetism, it adheres to the metal power part of the cleaner, There is a fault that causes failure. Thus, the method of directly adsorbing and removing the toner with a strong magnet cannot be a fundamental solution.
[0006]
Therefore, conventionally, as shown in Comparative Example 1 to be described later, the magnet is wrapped with medicine wrapping paper, and the toner is removed with the magnet through the medicine wrapping paper. However, since this method uses a hard magnet wrapped with medicine wrapping paper, the surface of the developing roller and other precision roller-shaped parts are damaged, and toner is attracted to the magnet through tears that occur in the medicine wrapping paper. There was a bug. As described above, in the past, the toner is removed while having the above-mentioned complicated problems.
[0007]
[Problems to be solved by the invention]
The present invention has been made in consideration of the above-mentioned problems of the prior art. The object of the present invention is not to adsorb the toner directly to the magnet but to embed the magnet in a closed container so that the outer surface of the closed container can be moved. By adhering the toner to the magnet via the toner, the toner can be easily and efficiently adsorbed and removed without damaging the surface of the member to be cleaned, and the adsorbed toner can be easily removed and collected. An object of the present invention is to provide a dry magnetic toner removal jig.
[0008]
[Means for Solving the Problems]
In the dry magnetic toner removing jig of the present invention , a magnet is provided in a sealed container whose bottom is formed of a plastic or rubber sheet material, and the magnet is attached to the bottom of the sheet material by an operation from outside the sealed container. It is characterized by being able to contact and separate.
[0009]
When using the removal jig of the present invention, the magnet is moved to the sheet material side by an operation from outside the sealed container, and the magnet is brought into contact with the surface of the member to be cleaned through the sheet material. In this case, the magnet is brought into contact with the sheet material, and the sheet material is brought into contact with the surface of the member to be cleaned. The toner is attracted to the surface of the sheet material by the magnetic force of the magnet. In this state, the removal jig is moved to the toner collection position, and the magnet is separated from the sheet material by an operation from outside the sealed container. As a result, the magnetic force of the magnet does not reach the toner, and the toner is recovered by dropping itself from the sheet material.
[0010]
Since the sheet material is made of plastic or rubber, if the surface of the member to be cleaned is made of a hard material such as metal, the surface may be damaged even if the sheet material is pressed against the surface of the member to be cleaned. Even when the surface of the member to be cleaned is made of plastic, there is almost no fear that the surface will be damaged. Further, since the sheet material is flexible and deforms according to the surface shape of the member to be cleaned, the toner adhering to the curved surface can be efficiently removed. There is also an advantage that it returns to its original state due to elasticity. As an example of use of this removal jig, there is a case where the member to be cleaned is a developing roller constituting a developing unit of the image forming apparatus.
[0011]
Removing jig dry magnetic toner of the present invention, together with a pre-Symbol magnets supported by the supporting member provided in the sealed vessel, then connected to an operating member provided with the support member outside the sealed container, the operating member The magnet may be freely contacted to and separated from the bottom portion of the sheet material. In this removal jig, the magnet is moved by operating the support member with the operation member.
[0012]
Removing jig dry magnetic toner of the present invention, the pre-SL operating member and the handle, constituted by said support member Jiku扞(rod member), a support plate rigid and connected to the lower end of the shaft扞, lower surface plate-shaped plastic magnet of the support plate, to fix the plate-shaped magnets made Sunawa Chi plastic or rubber, that the plate-like magnet and freely separable to bottom by the sheet material by the operation of the handle It is characterized by.
[0013]
In this removal jig, since a plastic or rubber plate-like magnet is provided as a magnet, there is almost no fear of damaging the surface (contact surface with the magnet) of the sheet material. Further, since the plate magnet is fixed to the hard support plate, the magnet can be firmly supported and the durability is improved. Further, since the magnet is moved by a handle operation, the convenience of work is enhanced.
[0014]
Removing jig dry magnetic toner of the present invention, before Symbol closed vessel, provided with a handle for moving and transportation. With this removal jig, the handle can be moved and transported, so that the convenience of work is further enhanced.
[0015]
Removing jig dry magnetic toner of the present invention, the coil spring deploy wound before Symbol shaft扞, the plate-like magnet by operation of the handle when brought into contact with the bottom by said sheet material, said coil spring It is characterized by being compressed.
[0016]
In this removal jig, when the plate magnet is moved to the sheet material side by a handle operation, the coil spring is compressed and its elastic force is generated, so the degree of movement of the plate magnet and the plate magnet It is possible to feel the response of whether or not the surface of the member to be cleaned is in contact via the material.
[0017]
Removing jig dry magnetic toner of the present invention, the pre-Symbol closed container, the peripheral wall is constituted by a container body made of hard plastic, a lid made of a colorless transparent plastic which is provided on the upper portion of the container body It is characterized by. This removal jig is easy to move and transport because it is light because almost all of the sealed container is made of plastic. Further, since the lid is made of a colorless and transparent plastic, the situation inside the container can be easily observed.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic front cross-sectional view showing the overall structure of a dry magnetic toner removal jig. In this figure, the toner remaining on the surface (cylindrical surface) of the developing roller provided in the image forming apparatus is removed. The method of removing with a jig is also shown.
[0019]
The toner removing jig includes a sealed container 11, a plastic magnet housed therein, that is, a plastic or rubber plate magnet (permanent magnet) 12 that is flexible, and the plate magnet is placed in the sealed container 11. It consists of a pulling handle (operating member) 13 that moves up and down, a rod-shaped handle 14 for moving and transporting the sealed container 11, and the like. The plate-like magnet 12 is obtained by, for example, cutting a sheet formed by dispersing ferromagnetic fine particles in rubber into appropriate dimensions, and can be easily bent by an external force.
[0020]
The sealed container 11 includes a container main body 16 having a bottom portion formed of a sheet material 15 made of plastic or rubber, and a lid (cover) 17 that is detachably attached to the upper portion of the container main body. The lid body 17 is made of a colorless and transparent hard plastic, and therefore the situation inside the container body 16 can be observed through the lid body 17. In addition, it is possible to use an electromagnet as the plate-like magnet 12 to control the generation of magnetic force by turning on / off the power source to remove the toner, or it is possible to use a material made of a steel material.
[0021]
The plate-like magnet 12 is supported by a support plate 18 made of a hard material provided in the sealed container 11, and a support bar (shaft rod) 19 is connected to the upper surface side of the support plate 18, and the support bar 19 Is connected to a pulling handle 13 provided outside the hermetic container 11, and the magnet 12 can be brought into and out of contact with the bottom by the sheet material 15 by operating the pulling handle 13 up and down (two-way up and down arrows in FIG. 1). It is as.
[0022]
Further, a push-down portion 20 having a diameter larger than that of the support bar 19 is provided between the support bar 19 and the pulling handle 13. A coil spring 21 is wound around the support bar 19, and the pulling handle 13 is moved downward. The push-down portion 20 pushes down and compresses the coil spring 21 and presses the coil spring 21 against the upper surface of the support plate 18. With this configuration, when the pulling handle 13 is lowered, the coil spring 21 is returned to its original length (natural length) and an elastic force is generated, so that the magnet 12 is interposed via the sheet material 15. It is possible to feel the response when it is brought into contact with the surface of the developing roller 31.
[0023]
Next, an example of how to use the toner removing jig will be described together with the operation. In FIG. 1, reference numeral 100 denotes toner. The following toner removal procedure is for the case where the dominant arm is a right hand worker.
(1) Hold the handle 14 with the left hand and hold the pull handle 13 with the right hand.
(2) The sheet material 15 (bottom) of the container body 16 is brought into contact with the surface of the developing roller 31. For this purpose, this removal jig may be placed on the surface of the developing roller 31.
(3) The pulling handle 13 is pushed down, and the magnet 12 is pressed against the surface of the developing roller 31 through the sheet material 15. The pressing can be felt by the elastic force of the coil spring 21.
(4) The toner 100 on the surface of the developing roller 31 is attracted to the sheet material 15 by the attractive force of the plate magnet 12 based on the pressing. In this state, the removal jig is raised to separate the sheet material 15 from the surface of the developing roller 31. FIG. 1 shows the state at this time.
[0024]
(5) The removal jig is moved to the toner collection place, and the pulling handle 13 is pulled up by an appropriate distance. As a result, the magnet 12 is sufficiently separated from the sheet material 15, so that the attraction force of the magnet 12 with respect to the toner 100 adsorbed on the lower surface of the sheet material 15 disappears.
[0025]
By repeating the above procedure, the toner can be removed over the entire outer peripheral surface of the developing roller 30. Instead of the above procedure, as shown in FIG. 1, the magnet 12 is brought into contact with the sheet material 15 in advance, and the removal jig in this state is lowered to press the sheet material 15 against the surface of the developing roller 31. Also good.
[0026]
As described above, by supporting the removal jig with the left hand and operating the pulling handle 13 with only the right hand, it is possible to perform the adsorption removal of the toner from the developing roller 31 and the fall recovery of the adsorption toner. Further, the removal jig is maintenance-free because the toner does not directly contact the magnet. Further, the removal jig does not require a large-capacity main capacitor, can be reduced in size, and can be provided at a low cost.
[0027]
In place of the plate magnet 12, a magnet having an appropriate shape such as a rod or disk can be provided. When the surface of the member to be cleaned is uneven or curved, it is preferable to provide a magnet having an uneven surface or curved surface corresponding to the uneven surface or curved surface, and the toner removing effect is further improved.
[0028]
Each member which comprises the said removal jig | tool can be produced with the material shown below, for example.
(1) Airtight container 11:
(1) Container body 16 (surrounding wall): Plastic (for example, phenol resin)
(2) Lid 17: Plastic (for example, phenol resin)
(2) Plate magnet 12: A magnet in which fine particles of ferromagnetic material are dispersed in rubber or plastic, or a steel material is magnetized. As the rubber or plastic, the same rubber or thermoplastic as those for the sheet material 15 described below can be used.
(3) Pull handle 13: steel, stainless steel, etc. (4) Handle 14: steel, stainless steel, wood, thermoplastic (ABS resin, ethylene copolymer, phenoxy resin, polyethylene, polysulfone, etc.), thermosetting plastic ( Phenolic resin)
[0029]
(5) Sheet material 15:
(1) As thermoplastics, ethylene copolymer, phenoxy resin, polyethylene, polyvinyl chloride, epoxy resin, etc .; as thermoplastic elastomers, styrene, olefin, ester, urethane, amide, fluorine, (2) Thermosetting plastic: phenolic resin, etc. (3) Rubber: Natural rubber, isoprene rubber, butadiene-styrene rubber, butadiene rubber, acrylonitrile-butadiene rubber, ethylene-butadiene rubber, ethylene-propylene rubber, ethylene -Propylene terpolymer, chlorosulfonyl polyethylene rubber, acrylic rubber, urethane rubber, silicone rubber, fluorine rubber, polysulfide rubber, etc.
(6) Support plate 18: steel, stainless steel, wood, thermoplastic (ABS resin, ethylene copolymer, phenoxy resin, polyethylene, polysulfone, etc.), thermosetting plastic (phenol resin, etc.)
(7) Support rod 19: Steel, stainless steel, etc. (8) Push-down part 20: Steel, stainless steel, etc. (9) Coil spring 21: Spring steel
【Example】
Next, an example of toner removal using the removal jig of the present invention and a comparative example using a conventional toner removal method will be described.
Example 1
The removal jig shown in FIG. 1 was used. The work procedure is as described above.
[0032]
Comparative Example 1
As shown in FIG. 2A, the magnet 51 is wrapped with the medicine wrapper 61, and the magnet 51 is brought into contact with the surface of the developing roller (not shown) through the medicine wrapper 61 to remove the toner 100. However, in this method, as shown in FIG. 2B, there is a problem that the toner enters the bag of the medicine wrapper 61 through the gap of the medicine wrapper 61 and is directly attracted to the magnet 51. In addition, the magnet 51 wrapped with the medicine wrapping paper 61 must be firmly held with both hands, and the removal work with only one hand cannot be performed. Further, when the toner is removed, a tear 62 is generated in the medicine wrapping paper 61, from which the toner enters the bag of the medicine wrapping paper 61 and is directly attracted to the magnet 51.
[0033]
Comparative Example 2
As shown in FIG. 3A, a cylindrical container 71 was manufactured in which the flange 72 and the peripheral wall 74 were made of hard plastic, and the bottom 73 was made of a flexible plastic sheet. The cylindrical container 71 was held with the left hand 81, the magnet 51 was held with the right hand 82, inserted into the cylindrical container 71, and brought into contact with the bottom 73. In this state, the magnet 51 is brought into contact with the surface of the developing roller (not shown) through the bottom portion 73 to attract the toner on the surface of the developing roller to the bottom portion 73. Next, in the state shown in FIG. 3A, the cylindrical container 71 and the magnet 51 are separated from the developing roller and moved to an appropriate position, and then, as shown in FIG. The magnet 51 was pulled up with the right hand 82, and the toner 100 was recovered by dropping its own weight. However, this method has a problem that a toner removal amount is small in one operation and that both hands must be used in each operation.
[0034]
The results of Example 1 and Comparative Examples 1 and 2 are shown in [Table 1] below. As is apparent from [Table 1], Comparative Examples 1 and 2 have poor workability and maintainability, and the medicine-wrapped paper is torn or the toner is directly attracted to the magnet. On the other hand, in Example 1 according to the present invention, not only was workability and maintenance excellent, but there was no problem that the toner was directly attracted to the magnet.
[0035]
[Table 1]

[0036]
【The invention's effect】
As apparent from the above description, according to the dry magnetic toner removal jig of the present invention, the toner on the surface of the member to be cleaned can be reliably removed by a simple operation. It is easy to remove and collect toner. Hereinafter, effects according to the claims will be described.
[0037]
(1) In the removal jig of the present invention, after the toner is adsorbed to the sheet material at the bottom of the sealed container by the magnet moving operation by the operation from the outside of the sealed container, the toner is removed from the sheet material by the same moving operation of the magnet. It can be dropped and recovered. As described above, since the removal jig does not directly adsorb the toner onto the magnet surface, the toner after the adsorption can be collected very simply and efficiently. The removing jig of the present invention is particularly effective for removing toner remaining on the developing roller surface of the image forming apparatus.
[0038]
(2) With the removal jig of the present invention , the magnet is moved by operating the support member with a predetermined operation member, so the convenience of toner removal work is enhanced.
[0039]
(3) Since the removal jig of the present invention is provided with a rubber plate magnet as a magnet, there is almost no fear of scratching the surface (contact surface with the magnet) of the sheet material. Further, since the plate magnet is fixed to the hard support plate, the magnet can be firmly supported and the durability is improved. Further, since the magnet is moved by a handle operation, the convenience of work is enhanced.
[0040]
(4) Since the removal jig of the present invention can be moved and transported by holding the handle, the convenience of work is further enhanced.
[0041]
(5) In the removal jig of the present invention , when the plate magnet is moved to the sheet material side by the handle operation, the coil spring is compressed and its elastic force is generated, so the degree of movement of the plate magnet, It is possible to feel the response of whether or not the plate magnet has contacted the surface of the member to be cleaned via the sheet material. For this reason, the reliability of the toner removing operation is increased. Further, since the risk of causing the sheet material to collide with the surface of the member to be cleaned or forcibly pressing the sheet material against the surface of the member to be cleaned is reduced, the effect of preventing damage to both the sheet material and the surface of the member to be cleaned is increased.
[0042]
(6) Since the removal removal jig of the present invention is light because almost the entire sealed container is made of plastic, it can be easily moved and transported. Further, since the lid is made of a colorless and transparent plastic, the situation inside the container can be easily observed.
[Brief description of the drawings]
FIG. 1 is a schematic front sectional view showing an overall structure of a dry magnetic toner removing jig according to an embodiment of the present invention.
FIG. 2 is an explanatory diagram of a comparative example 1;
3 is an explanatory diagram of Comparative Example 2. FIG.
[Explanation of symbols]
11 Sealed container 12 Plate magnet 13 Lifting handle 14 Handle 15 Sheet material (bottom)
16 Container body 17 Cover (cover)
18 Support plate 19 Support bar 20 Push-down part 21 Coil spring 31 Developing roller 51 Magnet 61 Medicine paper 62 Torn 71 Cylindrical container 72 Flange
73 Plastic sheet (bottom)
74 Perimeter Wall 100 Dry Magnetic Toner (Developer)

Claims (1)

A rubber plate magnet supported by a support member is provided in a sealed container formed of a flexible plastic or rubber sheet material at the bottom,
The support member is connected to an operation member provided outside the sealed container,
The operation member is constituted by a handle,
The support member is composed of a shaft rod and a rigid support plate connected to the lower end portion of the shaft rod,
A rubber plate magnet is fixed to the lower surface of the support plate,
By operating the handle from the outside of the sealed container, the plate magnet can be freely contacted and separated from the bottom portion of the sheet material,
The closed container is provided with a handle for movement and transportation,
A coil spring is wound around the shaft rod, and when the plate magnet is brought into contact with the bottom portion of the sheet material by the operation of the handle, the coil spring is compressed.
The airtight container comprises a container body whose peripheral wall is made of hard plastic, and a lid made of colorless and transparent plastic provided on the upper part of the container body. .

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