JP3119667B2 - Image forming device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a copying machine having an exhaust fan for cooling the interior of an image forming apparatus, and an ozone filter detachably disposed adjacent to the exhaust fan. And an image forming apparatus such as a printer.

[0002]

2. Description of the Related Art An image forming apparatus of the above type is well known. In an image forming apparatus of this type, in a copying machine or the like using a relatively inexpensive ozone filter, the ozone decomposition efficiency of the ozone filter decreases with time, and the ozone filter needs to be periodically replaced. For this reason,
In recent copiers, etc., the exhaust port of the exhaust fan is formed on the outer plate on the paper discharge side, and a filter receiver that detachably supports the ozone filter is provided outside the exhaust port, and the ozone filter can be replaced from outside the machine. I try to do it easily. Furthermore, it has already been proposed to provide an exhaust port and a filter receiver not on the outer plate on the paper discharge side but on the back side of the machine for the reason of connecting a post-processing device such as a sorter to the paper discharge side of a copying machine or the like. I have.

[0003]

However, in such a conventional copier or the like, when the ozone filter is replaced, it has to go around the rear of the machine, and the replacement operation is troublesome depending on the installation location. In addition, if an exhaust fan has an ozone filter on the exhaust side, the ozone filter acts as exhaust resistance and reduces exhaust efficiency.

Therefore, it is advantageous to provide an ozone filter on the suction side of the exhaust fan, but in this case, the ozone filter must be attached and detached from the inside of the copying machine body. Furthermore, in order to ensure that the discharged air passes through the ozone filter, it is necessary to mount the ozone filter so as to be fixed at a predetermined position with high accuracy. However, fixing the ozone filter at a predetermined position from the inside of the copying machine has a problem in that the attaching and detaching operations take time and effort. Therefore, an apparatus in which the exhaust fan and the ozone filter are configured as one unit and each unit is detachable has been proposed. However, in this case, there is a problem that the structure becomes complicated and the cost increases. .

[0005] The present invention solves the above-mentioned conventional problems,
It is an object of the present invention to provide an image forming apparatus in which an ozone filter can be easily attached and detached from the inside of the image forming apparatus main body to the suction side of the exhaust fan, and the exhaust air can always pass through the ozone filter.

[0006]

Means for Solving the Problems To achieve the above object,
Therefore, the present invention relates to an in-machine cooling device disposed in an image forming apparatus main body.
Exhaust fan, and can be attached to and detached from the exhaust fan in the ventilation path
And distributes ozone generated in the image forming apparatus main body.
Image forming apparatus having an ozone filter
And the suction of the exhaust fan inside the image forming apparatus main body.
Side, and the ozone filter is detachable
An ozone filter mounting portion for mounting is provided.
When the ozone filter is mounted on the filter mounting portion
Between the ozone filter and the exhaust fan.
The ozone filter has a width in which a gap is formed, and
The fan is connected to the exhaust fan by the operation of the exhaust fan.
It is characterized by being adhered.

[0007]

(2) The image forming apparatus according to (1), wherein the ozone filter is formed in a size to cover the entire surface of the suction side opening of the exhaust fan.

[0009]

According to the above construction, the ozone filter mounting portion is provided
Is between the placed ozone filter and the exhaust fan.
It has a width that creates a gap where the zon filter can move
Therefore, there is room in the width of the mounting position of the ozone filter,
In addition, the ozone filter is placed on the ozone filter
The replacement work is greatly simplified.
Furthermore, when the exhaust fan is activated, the suction force
To close the ozone filter to the exhaust fan.
Outgoing air can always be passed through an ozone filter.
You.

[0010]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a schematic structural diagram of a copying machine as an example of an image forming apparatus to which the present invention can be applied. The transfer paper fed from the paper feeding device 1 is conveyed to the drum-shaped photoconductor 3 at a timing by the registration roller 2. The photoconductor 3 is driven to rotate clockwise. At this time, the surface is charged by the charging charger 4, the light image from the exposure device 5 is formed, and an electrostatic latent image is formed on the photoconductor 3. This latent image is visualized by the toner when passing through the developing device 6. This toner image is transferred to the transfer charger 7-1.
Is transferred onto the transfer paper conveyed to the photoreceptor 3, and the transfer paper in close contact with the photoreceptor 3 is thereafter electrostatically separated by the separation charger 7-2. Subsequently, the transfer paper is transported to the fixing device 8, where the toner image on the transfer paper is fixed by the fixing device 8, and is discharged via the post-processing device 9. On the other hand, the photoconductor 3 after the transfer of the toner image has the residual toner thereon removed by the cleaning device 10.

An exhaust fan 11 for cooling the inside of the copying machine main body is mounted above the discharge side of the fixing device 8 by an exhaust fan bracket 12. The suction side of the air discharge fan 11, full Iruta receiving 13 and the guide member 14 is provided, mounting portion 1 of the filter receiving 13
An ozone filter 15 is detachably mounted on 3a.
The ozone filter 15 decomposes harmful ozone generated from the charging charger 4 and the transfer / separation charger 7. Further, since the exhaust fan 11 is provided with the ozone filter 15 on the suction side, there is no resistance on the exhaust side, so that the exhaust efficiency can be improved. In particular, when a cross-flow fan is used as the exhaust fan 11, it is advantageous to provide the ozone filter 15 on the suction side since the air volume is large and the cooling effect is not impaired.

In order to ensure that the air discharged from the exhaust fan 11 always passes through the ozone filter 15, it is conceivable that the ozone filter 15 is fixedly arranged so as to block the ventilation path of the exhaust fan 11. However, it has been described above that the fixed arrangement of the ozone filter 15 in this manner is a troublesome operation when the ozone filter 15 is mounted from the inside of the copying machine main body.

Therefore, in the present invention, as shown in FIG. 2, the mounting portion 13a of the filter receiver 13 on which the ozone filter 15 is mounted is wider than the width of the ozone filter 15, and the gap L when the ozone filter 15 is set. Is set to be formed. The mounting portion 13a of the filter receiver 13 is formed in a planar shape so that the ozone filter 15 can move. As shown in FIG. 4, the size of the ozone filter 15 is larger than the entire surface of the suction-side opening 11a of the exhaust fan 11, and covers the suction-side opening 11a when the ozone filter 15 is placed on the mounting portion 13a of the filter receiver 13. It is positioned so that The guide member 14 serves to support the ozone filter 15 mounted on the filter receiver 13 so as not to fall.

In the copying machine thus configured, even when the gap L is provided, when the exhaust fan 11 rotates, the ozone filter 15 comes into close contact with the exhaust fan 11 by its suction force as shown in FIG. Therefore, the entire surface of the suction side opening 11a of the exhaust fan 11 is covered with the ozone filter 15, so that the air exhausted by the exhaust fan 11 can always pass through the ozone filter 15. In addition, filter receiver 1
3 is wider than the width of the ozone filter 15, so that the attachment / detachment operation such as replacement of the ozone filter 15 can be easily performed from the direction of arrow P in FIG. That is, if the gap L is provided, the ozone filter 15 can be inserted at an angle when mounted in the direction of the arrow P, and there is no need to fix the ozone filter 15, so that the attaching and detaching operation can be easily performed.
Furthermore, the wearing state of the ozone filter 15 can be visually recognized,
Inspection is also easy.

The close contact of the ozone filter 15 with the exhaust fan 11 is particularly achieved by the paper type ozone filter 15.
Is advantageous because the weight is lightly and surely sucked. In addition, when the fixing device 8 can be pulled out of the machine for the purpose of clearing the jam, the attaching and detaching operation of the ozone filter 15 can be more easily performed by using this.

Thus, according to the present invention, when the ozone filter 15 is mounted on the suction side of the exhaust fan 11, the mounting portion 13a has a width capable of forming the gap L. Since the filter 15 comes into close contact with the suction force of the exhaust fan 11, air
It is discharged through the filter 15. Note that the filter receiver 13 and the guide member 14 may be formed using an exterior cover or other components.

[0017]

According to the above arrangement, the present invention provides an ozone filter.
Ozone filter and exhaust fan placed on the filter
A gap that allows the ozone filter to move is formed between
The width of the ozone filter.
There is enough width, and the ozone filter is an ozone filter
Replacement work, since it is not fixed just by placing it on the
Will be very easy. Furthermore, when the exhaust fan was activated
The ozone filter by the suction force
The exhaust air must be in an ozone filter
Can be passed through.

[Brief description of the drawings]

FIG. 1 is a schematic structural view of a copying machine according to an embodiment of the present invention.

FIG. 2 is an enlarged explanatory view of a main part of FIG. 1;

FIG. 3 is an enlarged explanatory view showing the movement of FIG. 2;

FIG. 4 is a front view of the ozone filter.

[Explanation of reference numerals] 11 exhaust fan 11a opening of exhaust fan 13 filter receiver 14 guide member 15 ozone filter

Claims (2)

(57) [Claims] An exhaust fan for cooling the inside of the apparatus, which is disposed in the main body of the image forming apparatus, and which is detachably disposed in a ventilation path of the exhaust fan to decompose ozone generated in the main body of the image forming apparatus. An image forming apparatus having an ozone filter, the inside of the main body of the image forming apparatus, the suction side of the exhaust fan
Arranged adjacently, the ozone filter is detachably mounted
Provided with an ozone filter mounting portion,
When the ozone filter is mounted on the receiver mounting portion,
There is a gap between the ozone filter and the exhaust fan.
The ozone filter having a width formed
Is in close contact with the exhaust fan by the operation of the exhaust fan
An image forming apparatus, comprising: 2. The image forming apparatus according to claim 1, wherein the ozone filter is formed in a size to cover an entire surface of a suction side opening of the exhaust fan.