JPH0663338A - Ozone adsorption device - Google Patents

Abstract

PURPOSE:To maintain ozone adsorption performance for a long time with a simple constitution in an ozone adsorption device. CONSTITUTION:This ozone adsorption device has a constitution provided with a fan driving device to exhaust a gas containing ozone, a rotational member 20 supported pivotally by shaft adjacently at the exhausting side of the fan driving device, a blade member 21 with a plurality of which is disposed on the rotational member 20 and gives turning force to the rotational member by receiving exhaust air and an ozone adsorption material 22 provided on the blade member 21 and/or all or a part of the rotational member 20.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ozone adsorbing device such as an ozone filter of a copying machine, and more particularly to an ozone adsorbing device for removing ozone from exhaust gas containing ozone.

[0002]

2. Description of the Related Art Conventionally, in a copying machine or a laser printer having an image forming section by an electrostatic application method, a step of charging a photosensitive member, a step of transferring a toner image to a transfer sheet, a transfer sheet having the toner image transferred thereto As an apparatus for treating ozone generated in the step of separating the toner from the photoconductor, an ozone adsorbing apparatus using a fixing method or a winding method is known.

The fixed type device is a plate-shaped ozone filter provided in the exhaust hole of the device and having no movable part (Japanese Patent Laid-Open Nos. 60-133463 and 60-1).
No. 34253), and a device based on a winding system is that a long film-shaped adsorbent wound on one reel is housed in a cartridge, and is gradually wound onto the other reel by using a stepping motor. Then, the fresh portion of the adsorption film is constantly supplied (see Japanese Patent Laid-Open No. 3-169315).

[0004]

However, in the conventional fixing type ozone filter, although the ozone adsorbing power is deteriorated as it is used, it is used as it is while being fixed to the exhaust hole, so that a new unused ozone adsorbing member is used. Since the agent cannot be supplied, there is a problem that the ozone adsorbing power is lost in a short period of time. In addition, although the ozone adsorption efficiency was improved by raising the temperature of the filter and the ozone adsorbent by using the heat of the fixing process, the deterioration of the adsorption capacity was inevitable.

On the other hand, in the adsorbing device of the winding type, since unused ozone adsorbent can be newly supplied, deterioration of the adsorbing ability can be eliminated, but it is only necessary to provide a drive device dedicated to film winding. In addition, it is necessary to control the rotation speed, which causes a problem that the configuration becomes complicated.

In view of the problems of the conventional ozone adsorbing device as described above, an object of the present invention is to provide an ozone adsorbing device having a simple structure and capable of maintaining ozone removal performance for a long period of time.

[0007]

SUMMARY OF THE INVENTION The present invention is directed to a fan drive device for exhausting a gas containing ozone, a rotary member pivotally supported near the exhaust side of the fan drive device, and a large number of rotary members. Ozone provided with a vane plate member that receives the exhaust gas and applies a rotational force to the rotating member, and an ozone adsorbent provided on all or a part of the vane plate member and / or the rotating member. It is an adsorption device.

[0008]

According to the present invention, when the gas containing ozone is exhausted from the fan drive device, the exhaust flow collides with the vane plate member, and as a result, a rotational force is applied to the rotating member that is axially supported, and the rotating member is rotated. Rotates. As a result, the gas containing ozone is constantly discharged through different portions of the rotating member or different surfaces of the blade member, thereby maintaining ozone adsorption performance.

[0009]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an embodiment in which the present invention is applied to a copying machine. In FIG. 1, the copying machine 1 includes an image forming unit 2 arranged in the center thereof, a document reading unit 3 arranged above the image forming unit 2, and a sheet conveyance to the image forming unit 2. It has a paper transport unit 4 for performing.

The image forming section 2 has a photosensitive drum 5 on the center of which an electrostatic latent image is formed. Around the photosensitive drum 5, an electrostatic latent image generated by the image light 30 obtained by the main charging device 6 that performs corona discharge for charging the photosensitive drum 5 to a predetermined charge and the document reading unit 3 is formed. A developing device 31 for developing, a transfer electrode 7 for transferring the developed toner image to the paper sent by the paper transport unit 4, a separation electrode 8 for separating the paper from the photoconductor drum 5, and a photoconductor. A cleaning device 9 for removing the residual toner on the drum 5 is arranged.

The document reading section 3 includes a document table 10 arranged on the upper surface of the copying machine 1, a document table holder 11 arranged on the document table 10 so as to be openable and closable, and an exposure table arranged below the document table 10. And a device (not shown).

The paper transport unit 4 includes a paper feed roller 12 and a paper discharge roller 13 arranged on both side surfaces of the copying machine 1, a paper feed transport path 14, and a paper discharge transport path 15. A fixing device 16 for performing a heat fixing process on the sheet on which the image is transferred is arranged on the sheet discharge roller 13 side of the sheet discharge passage 15.

The fixing device 16 mainly includes a pair of upper and lower rollers 17. A heater (not shown) for heating the sheet is provided in the upper fixing roller of the rollers 17, and the copying machine 1 includes an ozone adsorption device 18 on the fixing device 16. I have it.

A cooling fan 19, which is an example of a fan driving device, is arranged between the ozone adsorbing device 18 and the main charging device 6, the transfer electrode 7, and the separating electrode 8. The cooling fan 19 rotates. The charging process, transfer process,
Air containing ozone generated in the separation step or the like is sucked, passes through the ozone adsorbing device 18, and is filtered,
It will be exhausted to the outside as shown by the white arrow. 32 is a duct member here.

The body of the ozone adsorbing device 18 is provided near the exhaust side of the cooling fan 19, and as shown in FIG.
Rotating shaft 231 and two discs 2 attached to both ends thereof
A rotary member 20 composed of three members, a large number of blade members 21 arranged on the rotary member 20, receiving a flow of exhaust gas containing ozone and applying a rotational force to the rotary member 20, and the respective blade plate members 21. It is composed of ozone adsorbents 22 provided on both sides.

Each vane plate member 21 has a predetermined interval,
Both ends thereof are fixed to two opposing discs 23, and the end portion of the blade plate member 21 has a diametrical line (D).
Mounted on the disc 23 at an angle (E) of approximately 45 ° with respect to.

As a material used for the base material of the ozone adsorbent 22 provided on the blade member 21, for example, a resin film, paper, cloth or the like can be used, and activated carbon powder is mainly used for these base materials. The ozone adsorbent 22 is formed by applying the ozone adsorbent described above. The ozone adsorbent may be composed only of activated carbon powder, but may further contain a catalyst such as platinum, lead oxide, manganese oxide, and copper oxide.

The operation of the above embodiment will be described below. When the copying operation is started, the sheet is conveyed to the image forming section 2 side through the registration rollers 12 by the sheet feeding / conveying path 14. On the other hand, if the image information of the document on the document table 10 is
The main charger 6 reads the document by the document reading device 3.
Photoconductor drum 5 uniformly charged by the corona discharge of
Is exposed to form an electrostatic latent image. At that time, ozone is generated near the main charging device 6 due to corona discharge.

The air containing ozone is used for the cooling fan 1.
It is sucked in by the rotation of 9, and is sprayed on the ozone adsorption device 18. As a result, ozone is adsorbed and removed by the ozone adsorbent provided on the blade member 21. The air from which ozone has been removed is discharged to the outside from the exhaust port in a clean state. Moreover, since the blade plate member 21 to which air is blown at the same time gives a rotating force to the rotating member 20,
The rotating member 20 rotates gradually or rapidly.

Therefore, when the copying operation is repeated, the rotary member 20 will always continue to rotate, and the air containing ozone will cause each vane member 2 in the ozone adsorbing device 18 to rotate.
1 will be adsorbed on average by the ozone adsorbent. Moreover, the ozone adsorption device 18 is fixed to the fixing roller 17.
Since it is arranged on the upper part of, the temperature of the ozone adsorbent can be raised and the ozone adsorption efficiency can be enhanced. In order to allow the heated ozone adsorbent to immediately adsorb ozone, the angle of the blade member 21 is set so that the rotating member 20 rotates counterclockwise as shown by an arrow F in FIG. It is devised.

FIG. 3 shows another structure of the rotating member. In the figure, each blade member 25 is made of, for example, a thin plate having a honeycomb structure of aluminum, has a predetermined interval, and both ends thereof are fixed to two discs 26 facing each other. The parts are attached to the disc 26 at an angle of approximately 45 ° with respect to the diametrical line of the disc 26. Reference numeral 27 denotes a body of the rotating member 28, on the entire surface of which an ozone adsorbent is provided. The body 27 may have a structure in which an ozone adsorbent is applied to a breathable base material having a mesh structure, for example. 29
Is the axis of rotation.

The ozone adsorbing device 1 of the above-mentioned embodiment
8 can also combine the configurations of the rotating members 20 and 28 described above. That is, it is also possible to adopt a configuration in which the body of the rotary member and the vane plate are each provided with an ozone adsorbent.

FIG. 4 shows a second embodiment of the ozone adsorption device. In the figure, reference numeral 40 denotes a first roller axially supported by a case of a duct 41 (described later), and 42
Is a second roller which is also axially supported by the case of the duct 41, and a belt-shaped endless belt 43 is stretched around both rollers 40 and 42. The endless belt 43 is provided with an ozone adsorbent, and a large number of vane plate members 44 are attached to the outer peripheral surface thereof. In addition, 45 is a cooling fan. The duct 41 exhausts the exhaust air of the cooling fan 45 to the endless belt 43 and the vane member 44.
To guide you to. These first rollers 40,
The second roller 42 and the endless belt 43 constitute a rotating member.

In the case of this embodiment, the air containing ozone is sucked by the rotation of the cooling fan 45, passes through the duct 41, and is blown to the ozone adsorbing device 46.
As a result, ozone is adsorbed and removed by the ozone adsorbent provided on the belt-shaped endless belt 43. Then, the clean air from which ozone has been removed is discharged to the outside through the exhaust port. At the same time, air is blown onto the vane plate member 44, so that a rotational force is applied to the endless belt 43, and the endless belt 43 rotates counterclockwise. Further, the blade member 44 is attached so as to rotate in such a manner.

Therefore, when the copying operation is repeated, the first roller 40 and the second roller 42 always continue to rotate, and the ozone-containing air is transferred to the endless belt 43.
It will be adsorbed on average by the ozone adsorbent provided in. Moreover, since the ozone adsorbing device 46 is disposed above the fixing roller 17, it is possible to raise the temperature of the ozone adsorbent and increase the ozone adsorbing efficiency.

The ozone adsorbent of the present invention need not be entirely provided on the rotating member or the blade member as described above, but may be provided on a part thereof. Further, the rotating member of the present invention is not limited to the above-mentioned one, but a rod-shaped member,
Any member such as an arc may be used as long as it can rotate.

Further, the blade plate member of the present invention is not limited to the flat plate-like member as described above, and may be any member having a hemispherical shape, a bowl shape or the like, that is, a member for rotating the rotating member by receiving a force from exhaust gas. .

Further, the ozone adsorbing device of the present invention can be applied not only to the copying machine but also to any device such as a facsimile, a printer or the like, which exhausts ozone.

[0030]

The ozone adsorbing device according to the present invention has a structure in which the ozone adsorbing surface onto which air containing ozone is blown moves without the need for a dedicated drive device.
The ozone adsorption performance can be maintained for a long time, and the device itself can be realized with an extremely simple structure.

[Brief description of drawings]

FIG. 1 is a schematic vertical sectional view of a copying machine to which an embodiment of the present invention is applied.

FIG. 2 is a perspective view of an essential part of an ozone adsorption device according to an embodiment.

FIG. 3 is a perspective view of a main part showing another configuration of the rotating member shown in FIG.

FIG. 4 is a schematic vertical cross-sectional view showing another embodiment of the ozone adsorption device.

[Explanation of symbols]

 1 Copying Machine 2 Image Forming Section 3 Original Reading Section 4 Paper Conveying Section 5 Photosensitive Drum 6 Main Charging Device 17 Fixing Roller 18 Ozone Adsorption Device 19 Cooling Fan (Fan Driving Device) 20 Rotating Member 21 Vane Plate Member 22 Ozone Adsorption Material

Claims (1)

[Claims] 1. A fan drive device for exhausting a gas containing ozone, a rotary member pivotally supported near the exhaust side of the fan drive device, and a plurality of rotary members provided on the rotary member for receiving the exhaust gas. And an ozone adsorbent provided on all or a part of the vane plate member and / or the rotating member, and an ozone adsorbing device. .