JP2002018221A - Instrument provided with ventilating means - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an instrument having a filter which is easily removable and on which setting miss hardly occurs when it is mounted and which is good for resource saving and friendly to environment and in which cost down can be attempted. SOLUTION: The open air is taken in through a dust-proof filter 10 provided on an intake of a duct 12 by means of a cooling fan 11 and is introduced into this instrument through an opening provided on the top part of the duct 12. A space 13 for sticking the dust-proof filter 10 is provided on the duct 12 and it is made to be a Velcro tape (R) face 21 (a tape face with a hook-like face on which a number of filaments the apexes of which are made to be hook-like are uniformly stood), and when the dust-proof filter 10 is pressed thereon, the filaments are hooked to make it possible to simply mount and remove the dust-proof filter and to easily exchange the dust-proof filter 10. An invention wherein two sheets of the dust-proof filters inserted into a flow path by fitting them on both sides of a frame by means of a Velcro tape system is also described.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device provided with a filter for filtering substances floating in the air (for example, an electrophotographic image forming apparatus, an air conditioner, an air purifier, etc.).
More particularly, the present invention relates to a device provided with a filter that can be attached to and detached from the device and that can be replaced.

[0002]

2. Description of the Related Art Conventionally, many devices are provided with a filter for removing a substance floating in the air or a floating substance contained in the outside air. Among the apparatuses, there are various apparatuses such as an electrophotographic image forming apparatus, an air conditioner, and an air purifier. The filtering ability of the filter decreases with time as it is used. For example, when a dustproof filter is used for a certain period of time or more, the dust collecting effect is significantly reduced. For this reason, the dust filter mounted on the device is often treated as a replacement part. Here, taking the case of an electrophotographic image forming apparatus as an example, a method for mounting a conventional dustproof filter provided as a replacement part to the apparatus will be described below. This is a method of fixing with double-sided tape. The scanner mainly adopts a method of cooling an illumination light source (eg, a halogen lamp) and a contact glass on which a document is placed by sending outside air with a fan (see FIG. 1). In this case, as shown in FIG. 9, a configuration is adopted in which outside air is guided into the scanner by a cooling fan (cross flow fan) 11 through a dustproof filter 10. The method of mounting the dustproof filter 10 is as follows.
A sticking allowance 13 is provided at the outside air intake of the duct 12, and the dustproof filter 10 is placed on the double-sided tape 14 attached thereto.
Are fixed by stacking and pasting. This is a method by mounting a filter with a resin frame.
As shown in FIG. 10, the dustproof filter 1 is mounted on a resin frame 18.
In this case, the dustproof filter unit 16 with a frame is formed by attaching 0 or integrally forming the frame, so that the frame can be mounted and replaced in the flow path. This is a method in which a dustproof filter is sandwiched and held between an exterior plate provided with a vent and an end face of a duct. To replace the dustproof filter, remove either the exterior panel or the duct, cover the dustproof filter to be replaced with the ventilation port of the duct, and press and hold the dustproof filter when reattaching the removed exterior panel or duct. I have to. Also, in the dustproof filter, in order to lengthen the filter replacement cycle,
The device may be equipped with multiple filters. In this case, a plurality of dustproof filters (for example, 2
Individual), and replace it in a longer cycle. Further, the apparatus may be equipped with a filter in which a plurality of types of filters such as a dustproof filter and an ozone filter are integrated. In this case, use an ozone filter that is made of a material that is easily broken, such as activated carbon, but has a rigidity enough to attach tape. In some cases, a composite filter integrated by a method of pasting is attached to an apparatus.

[0003]

However, in the above-mentioned method, it is necessary to peel off the double-sided tape that has been firmly adhered and replace it at the same position when replacing. In the case of this method, although the component cost of the filter is reduced, there is a problem in terms of easy replacement. Also,
When a filter fixed and integrated with a recyclable resin component is pasted through the resin component, the double-sided tape needs to be completely peeled off from the pasting surface of the resin component in order to reuse the resin component. It is difficult to completely remove the double-sided tape adhered to a stiff object such as a filter, which is not a preferable method in terms of recycling. In the above method, since the entire resin frame is replaced, the cost of parts is increased, and the resin frame becomes garbage, which is not friendly to the global environment. Although the above method is inexpensive and generates a small amount of dust, it has to be assembled properly with the filter interposed between the duct and the exterior. Only skilled service personnel can be exchanged. In addition, erroneous assembly is likely to occur. In such a case, dust enters the machine, and the function of the dustproof filter cannot be obtained. Also, in the case of a method in which a plurality of filters are individually provided in the apparatus, the replacement cycle is long, but since the plurality of frames are replaced, it is possible to exacerbate the above-described problems of increased costs and increased dust. There is. Further, in the case of a composite filter in which an ozone filter is integrated, if filters with different replacement cycles are integrated, a filter with a long cycle is unnecessarily replaced in accordance with a filter with a short life cycle. In order to solve this problem, a dust-proof filter with a short replacement cycle is attached with a double-sided tape so that the filter can be replaced. However, in this case, there is a great risk that the ozone filter is broken. The present invention makes it possible to attach and detach to equipment,
The present invention has been made in view of the above-mentioned conventional problems in a device having a filter for filtering suspended substances that can be replaced, and its purpose is to facilitate attachment / detachment, to reduce the possibility of setting errors during mounting, and to save energy. Eco-friendly with resources (ie, minimizing waste and making it easier to recycle)
It is an object of the present invention to provide a filter (for example, an electrophotographic image forming apparatus, an air conditioner, an air purifier, etc.) provided with a filter capable of reducing costs and an ozone filter.

[0004]

According to a first aspect of the present invention, there is provided an apparatus provided with a ventilation means having a ventilation path and a filter provided in the ventilation path, wherein the ventilation path is provided with a fitting allowance for the filter. A device having ventilation means, wherein an adhesive having an adhesive surface capable of directly mechanically engaging the material of the filter is fixed thereto.

According to a second aspect of the present invention, there is provided an apparatus including a ventilation path, a frame body detachably provided in the ventilation path, and ventilation means having a filter attached to the frame body, wherein a filter allowance is provided for the frame. A device having ventilation means, wherein an adhesive having an adhesive surface capable of directly mechanically engaging the filter material is fixed to the mounting margin, and the filter is engaged with the hook-like surface. It is.

According to a third aspect of the present invention, in the apparatus provided with the ventilating means according to the second aspect, both the upstream side and the downstream side of the ventilation path in the frame are directly mechanically engaged with the material of the filter. An adhesive having a bondable bonding surface is fixed, and a filter is engaged with each of the bonding surfaces.

According to a fourth aspect of the present invention, in the apparatus provided with the ventilation means according to any one of the first to third aspects, the filter is a dustproof filter.

According to a fifth aspect of the present invention, there is provided an apparatus provided with a ventilation means having a ventilation path, an ozone filter detachably provided in the ventilation path, and a dustproof filter detachably provided in the ventilation path. An apparatus provided with ventilation means, wherein an adhesive having an adhesive surface capable of mechanically directly engaging a filter material is fixed to the filter material, and a dustproof filter is detachably engaged with the adhesive surface.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described based on the following embodiments shown in the accompanying drawings. FIG. 1 shows a schematic configuration of a scanner of an electrophotographic image forming apparatus provided with a detachable filter according to the present invention. Scanner 1
As shown in FIG. 1, a first carriage 5, a second carriage 4, on which a reading scanning system is mounted, a lens 6, covered by an inner cover 8, a CCD 7, a contact glass 9, on which a document to be read is mounted, are provided as elements. . In order to cool the inside of the scanner unit 1, a cooling fan (cross flow fan) 11 that guides outside air into the scanner unit 1 through the duct 12 is provided, whereby ventilation shown by streamlines shown in the drawing is performed. The ventilation mainly cools the illumination light source (eg, a halogen lamp) placed on the first carriage 5 and the contact glass 9 on which the document is placed. In this case, as shown in FIG. 9, a configuration is adopted in which outside air is guided into the scanner by a cooling fan (cross flow fan) 11 through a dustproof filter 10.

FIG. 2 is an exploded view showing details of the blower of the scanner 1 shown in FIG. The blower has a cooling fan 11, a duct 12, and a dust filter 10, as shown. Outside air is taken in by the cooling fan 11 through the dustproof filter 10 provided at the intake of the duct 12, and guided into the scanner through the opening provided at the upper part of the duct 12. As shown in FIG. 2, the dustproof filter 10 is provided with a sticking allowance 13 at the outside air intake of the duct 12, and is detachably attached thereto. In the present embodiment, the dustproof filter 10 can be attached and detached by a method using an adhesive having an adhesive surface capable of mechanically directly engaging the filter material. The hook-shaped surface of Magic Tape (registered trademark) can be used as an adhesive having an adhesive surface that can be directly mechanically engaged with the material of the filter. The magic tape is widely used as a detachable fixing means. As shown in FIG. 3, the tape has a hook-like surface in which a large number of filaments having hook-like tips are uniformly erected on the surface. A tape 20 consisting of a tape surface 21 and a tape 22 having a raised surface on which the filaments engaging with the hooks are uniformly raised on the surface. The two tapes are in close contact with each other and fix both tapes to each other. As an embodiment of the present invention, a magic tape 20 is used as an adhesive having an adhesive surface capable of directly mechanically engaging the material of the filter.
An example in which only the tape surface 21 having the hook-shaped surface is used will be described. The hook 13 is attached to the sticking margin 13 of the duct 12 by means of, for example, a double-sided adhesive tape. When the dustproof filter 10 is pressed against the tape surface 21 having a hook-like surface attached to the sticking allowance 13, the filter body of the dustproof filter 10 forms a mesh woven by filaments, and the Tape with side 2
2, the dustproof filter 10 is easily attached to the tape surface 21 having the hook-shaped surface of the magic tape. With this configuration, the dustproof filter 10 can be easily removed from the duct 12 by the action of the magic tape.
Can be removed, and only the dustproof filter 10 can be easily replaced.

Next, as another embodiment, an example will be described in which the present invention is applied to a copying machine which is one of the electrophotographic image forming apparatuses. In a copying machine, a filter for a dust collection and exhaust device is used. FIG. 4 is a diagram showing a schematic configuration related to a dust collection and exhaust device of the copying machine. As shown in FIG. 4, the dust collecting and exhausting device in the copying machine 2 is provided for the purpose of processing toner and ozone, and generates a latent electrostatic image and develops around the photoreceptor for developing with the toner. The toner and ozone generated in 3 are collected and processed through a duct. For this purpose, a dust collection fan 1 in an air passage drawn by a dust collection fan (sirocco fan) 15 through a duct from a charged charger portion generation ozone suction portion Do and a cleaning waste toner suction portion Dt disposed around the photoreceptor 3.
Dustproof filter with frame 16 across the duct upstream of 5
And an ozone filter 17. As shown in FIG. 5 (shown as an exploded view), the dustproof filter 16 with a frame adopted here is used.
Are attached to a resin frame 18. When the filter is replaced, the dustproof filter 10 is pulled out of the duct together with the frame while being attached to the resin frame 18. FIG.
As shown in FIG. 1, the dustproof filter 10 is made of a resin frame 1.
A tape surface 21 having a hook-like surface of a magic tape is attached to the margin of the peripheral portion 8 by means such as a double-sided adhesive tape, and is attached in the same manner as in the above-described embodiment (see FIG. 2). When the dustproof filter 10 is pressed against the tape surface 21 having the hook-like surface, the dust-proof filter 10 easily adheres to the tape surface 21 having the hook-like surface of the magic tape. With this configuration, the dustproof filter 10 can be easily peeled off from the resin frame 18 by the action of the magic tape. At the time of replacement, the resin frame 18 is pulled out of the duct, only the dustproof filter 10 is peeled off from the tape surface 21 having the hook-shaped surface of the magic tape, a new dustproof filter is attached, and the filter can be reset.

Next, another embodiment of a dustproof filter attached to a resin frame will be described. Here, an example in which the present invention is applied to a dust collection duct applicable to the above-described embodiment (FIGS. 4 and 5) will be described. In the dust collection duct, if the scattering amount of toner is large,
The dust filter must be replaced frequently. In such a case, by setting a plurality of dustproof filters, the replacement cycle can be lengthened. In order to set a plurality of dustproof filters, in this example, as shown in the exploded view of FIG. 6, a resin frame 18 (the frame is basically the same as the resin frame 18 shown in FIG. 5). (A frame body can be used)) so that the dust-proof filters 10 can be attached to both sides. Therefore, as shown in the figure, the tape surface 21 having the hook-like surface of the magic tape is attached to both surfaces of the resin frame 18 by means such as a double-sided adhesive tape. By doing so, the two dustproof filters 10
Can be attached to one frame 18, and the replacement cycle can be easily lengthened. Further, at the time of replacement, only the dustproof filter can be easily replaced. Therefore, the problem of the conventional method of attaching one dustproof filter to the frame and separately mounting the two frames can be solved.

Next, another embodiment of a filter used in a dust collecting duct of a copying machine and a dust collecting duct of an exhaust device will be described. In the dust collection duct, as shown in FIG.
6 and an ozone filter 17, two types of filters having different replacement cycles are provided. When two different types of filters are provided, the dust-proof filter generally has a shorter replacement cycle than the ozone filter. Also,
The ozone filter is made of a rigid material such as activated carbon, which is easily broken, but can be attached to a tape. Paying attention to this property, a tape surface 21 having a hook-shaped surface of a magic tape is attached to a part of the ozone filter, and two different types of filters are combined by attaching a dustproof filter to the hook upper surface, One dustproof filter having a short replacement cycle is removed from the ozone filter and made replaceable. FIG. 7 shows an embodiment of the configuration of such a composite filter. As shown in FIG. 7, the peripheral portion of the ozone filter 17 or the ozone filter 1
A tape surface 21 having a hook-like surface of a magic tape is attached to a peripheral portion of the frame 19 of FIG. 7 by means of a double-sided adhesive tape or the like. Tape surface 21 having this hook-shaped surface
Then, when the dust filter 10 is pressed and pressed, the dust filter 10 is easily replaced with a tape surface 21 having a hook-shaped surface of a magic tape.
(This is the same method as the embodiment of FIGS. 2 and 5 described above). With such a configuration, when replacing the dustproof filter 10, the ozone filter 17 is pulled out of the duct, only the dustproof filter 10 is peeled off from the tape surface 21 having the hook-shaped surface of the magic tape, a new dustproof filter 10 is attached, and the dustproof filter 10 is attached again. Can be set. At this time, since the detachment force is applied only between the tape surface 21 having the hook-shaped surface of the magic tape and the dustproof filter 10,
The ozone filter 17 is not damaged. If the tape surface 21 having the hook-shaped surface of the magic tape is directly attached to the periphery of the filter main body of the ozone filter 17, there is also an advantage that the frame for fixing the dustproof filter 10 becomes unnecessary.

FIG. 8 shows another embodiment of the configuration of the composite filter. As shown in FIG.
A tape surface 21 having a hook-like surface of a magic tape is attached by means of a double-sided adhesive tape or the like using the end surface of the frame body 19 as a sticking margin. Since the mounting is performed by using the end surface, the flow path is not blocked because the tape surface 21 having the hook-shaped surface of the magic tape is provided as in the above-described embodiment (see FIG. 7). The dust collection efficiency by the dust fan 15 can be increased. In the above embodiment,
Although the image forming apparatus based on the electrophotographic method has been described as an example, it is needless to say that the present invention can be applied to other devices such as an air conditioner and an air purifier using a filter which is detachable and replaceable.

[0015]

(1) Effect corresponding to the first aspect of the present invention An air-passage is provided with an allowance for mounting a filter, and an adhesive body (magic tape) having an adhesive surface which can be directly mechanically engaged with the material of the filter. And the filter is removably engaged with the hook-shaped surface, eliminating the need to apply double-sided adhesive tape to the filter as in the past, reducing the cost and making the filter easy to attach and detach. Yes, when disposing of the filter, the generation of garbage is minimized, and when recycling the duct where the Velcro is pasted with double-sided adhesive tape, the Velcro is more stiffer than the dustproof filter, so the double-sided tape is easy to peel off, Since the replacement of the filter is easy, there is an effect that a problem such as a setting error is less likely to occur. (2) An effect corresponding to the second aspect of the present invention. An adhesive body (of a magic tape) provided with a detachably provided frame in the air passage and having an adhesive surface capable of mechanically directly engaging the material of the filter. (Hook-shaped surface) is fixed, and the filter is engaged with the Velcro. When replacing the filter with a short replacement cycle, it is possible to replace the filter alone, eliminating the need to discard the frame, and reducing costs. And the generation of dust can be minimized. (3) Effects corresponding to the third aspect of the invention In addition to the effects of the above (2), hook-shaped surfaces of a velcro tape are fixed to both surfaces of the frame body on the upstream and downstream sides of the ventilation path, and the hook-shaped surfaces are fixed to the hook-shaped surfaces. By engaging each filter,
Two filters can be attached to one frame,
The replacement cycle can be easily lengthened, and at the time of replacement, only the dustproof filter can be easily replaced, so that cost reduction and generation of dust can be minimized. (4) Advantages Corresponding to the Invention of Claim 4 The above-described (1) to (1) to (4) have a filter structure in which a filter to be applied can be securely attached to the hook-shaped surface of the velcro, and the filter has a short replacement cycle.
The effect of (3) can be realized more effectively. (5) Effects corresponding to the fifth aspect of the invention: An ozone filter having a different replacement cycle (combined filter made of activated carbon or the like, which has a stiffness enough to attach tape, but has a rigidity enough to attach a tape) and a dust-proof filter. An adhesive having a bonding surface capable of mechanically directly engaging the filter material (a hook-like surface of a velcro tape) is fixed to the filter material, and a dust-proof filter is detachably engaged with the hook-like surface, so that a replacement cycle can be performed. Only the short dustproof filter can be replaced without damaging the ozone filter, eliminating the need to dispose of the frame as in the past, reducing costs and minimizing the generation of dust. it can.

[Brief description of the drawings]

FIG. 1 shows a schematic configuration of a scanner having a blower provided with a filter according to the present invention.

FIG. 2 is an exploded view showing details of a blower of the scanner of FIG.

FIG. 3 shows a configuration of a magic tape having a hook-like surface and a brushed surface.

FIG. 4 is a diagram illustrating a schematic configuration related to a dust collection and exhaust device of the copying machine.

FIG. 5 is an exploded view showing an embodiment of a dustproof filter with a frame according to the present invention.

FIG. 6 is an exploded view showing another embodiment of a dustproof filter with a frame according to the present invention.

FIG. 7 shows a configuration of an embodiment of a dustproof / ozone combined filter according to the present invention.

FIG. 8 shows a configuration of another embodiment of a dustproof / ozone combined filter according to the present invention.

FIG. 9 is an exploded view showing a blower provided with a filter in a conventional scanner.

FIG. 10 shows an example of a conventional dustproof filter with a frame.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Scanner, 2 ... Copy machine, 3 ... Around photoreceptor, 10 ... Dustproof filter, 11 ...
Cooling fan (cross flow fan), 12 ... duct,
13: Duct sticking margin, 14: Double-sided adhesive tape, 15: Dust collecting fan (sirocco fan), 16: Dust filter with frame, 17: Ozone filter, 18: Dust filter frame, 19: Ozone filter frame Body, 20 ... magic tape,
21: hook-shaped surface, 22: brushed surface, D
o: an ozone suction section for generating a charged charger section, Dt: a cleaning discharge toner suction section.

Claims (5)

[Claims] 1. An apparatus provided with a ventilation means having a ventilation path and a filter provided in the ventilation path, wherein a mounting margin for the filter is provided in the ventilation path, and the mounting margin is directly mechanically engaged with a material of the filter. An apparatus provided with a ventilation means, wherein an adhesive having a possible adhesive surface is fixed. 2. An apparatus including a ventilation path, a frame body detachably provided in the ventilation path, and a ventilation means having a filter attached to the frame body, wherein the frame body is provided with a mounting allowance for a filter. An apparatus provided with a ventilation means, characterized in that an adhesive having an adhesive surface capable of mechanically directly engaging the filter material is fixed to the filter material, and the filter is engaged with the hook-shaped surface. 3. An apparatus provided with the ventilation means according to claim 2, wherein both the upstream side and the downstream side of the ventilation path in the frame body have an adhesive surface directly mechanically engageable with the material of the filter. An apparatus provided with a ventilation means, wherein an adhesive having a filter is fixed, and a filter is engaged with each of the adhesive surfaces. 4. An apparatus provided with the ventilation means according to claim 1, wherein said filter is a dustproof filter. 5. An apparatus including a ventilation path, an ozone filter detachably provided in the ventilation path, and ventilation means having a dustproof filter detachably provided in the ventilation path, wherein the ozone filter is directly attached to a material of the filter. An apparatus provided with ventilation means, wherein an adhesive having a mechanically engageable adhesive surface is fixed, and a dustproof filter is detachably engaged with the adhesive surface.