JP3490981B2 - Image forming apparatus provided with ozone treatment device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [0001] The present invention relates to a corona discharge means.
Various types of copiers, lasers or LED printers
Or an image such as a laser or LED facsimile
It relates to an image forming device, and more specifically,
The present invention relates to an image forming apparatus provided with
Things. [0002] 2. Description of the Related Art Corona discharge means is provided as a component.
During operation of corona discharge means in various image forming devices
Ozone generated in
From now on, to remove or decompose this ozone
Many proposals have been made for ozone treatment
You. [0003] These are light, ozone treatment methods.
Decompose and deodorize by applying heat or a catalyst to ozone.
Or release ozone outside the image forming apparatus.
And means for efficiently performing these processes.
To collect and transport ozone to and from the ozone source
Using steps. [0004] Among the conventional ozone removal techniques, light is used.
There are the following technologies for things. FIG. 36 shows the conventional technique.
An example of the technique is disclosed in JP-A-3-62054.
FIG. 3 is a diagram for explaining the configuration of the device and the operation thereof.
36 (A) is a schematic diagram of a main part, and FIG.
It is a side view. [0005] In FIG.
The air containing ozone is supplied to the duct 5 by the exhaust fan 506.
04 through the ozone filter 505
You. On the other hand, branching from the duct 504 to the photoconductor 502 side
A duct 504a with an open part near the photoconductor is provided and branched
A discharge lamp 503 is placed in the middle of the duct
You. [0006] Light from the neutralization lamp 503 is applied to the surface of the photoreceptor.
Irradiate the surface of 502 to remove the charge and
Duct 504 through which air 507 partially containing ozone flows
Irradiates the inside of the. And the irradiated light produces ozone
Will be decomposed. However, according to this method, FIG.
When the exhaust fan 506 operates, the static elimination lamp 503 is activated.
From the opening on the photoconductor 2 side of the surrounding duct surrounding the
The air 512 around the light body is drawn in (FIG. 36 (B),
Therefore, the ozone generated by the charger 501 is sucked.
The suction force for generating the ozone flow 507 is insufficient, and the charging device 5
01 cannot be sufficiently absorbed, and ozone
Unable to send to filter 505. [0008] On the other hand, to compensate for the lack of ozone suction power.
To increase the exhaust output of the exhaust fan 506
Causes the exhaust fan 506 to be large,
Fan noise becomes noticeable. In addition, the ozone decomposition of the ozone filter or
Degree of adsorption includes ozone passing through the ozone filter
Part where air is used to decompose or adsorb ozone filter
Depends on contact time with minutes. That is, it depends on the air velocity
Therefore, when the exhaust output of the exhaust fan 506 is increased,
The flow velocity of the air passing through the ozone filter 505 is large.
And the degree of decomposition of ozone is reduced. [0010] A light source 503 is arranged in a duct 504.
The structure of the duct 504 becomes complicated,
When the duct layout is restricted,
It can lead to such a result. Further, as shown in FIG.
In a similar device, the light inside the duct 504
Enlarge the space and improve the rate of ozone decomposition by light
In order to make the frontage of the branch duct large,
It is conceivable to make various changes, but it is
In addition, the ozone suction power becomes insufficient. Further, in the same apparatus as the above-mentioned conventional example,
And uniform ozone decomposition or adsorption throughout the ozone filter
In this case, partial deterioration of the ozone filter is low.
It is possible to extend the life of the ozone filter as a whole,
As shown in FIG. 38, exhaust gas is exhausted on the upstream side of the ozone filter 505.
By stirring the air with the fan 506, the ozone concentration
Flow of air into the ozone filter 505
I can think. In such a configuration, the ozone filter
Branch 505 between the ozone suction part of the duct 504 and the
The exhaust fan 506 has a duct
When disposed upstream of the branch 504a,
The filter 505 becomes the resistance of the flow path,
Part 513 of ozone sucked from the opening leaks into the copier
And deteriorates the photoconductor 2 and other parts in the copying machine 1.
Problems arise. Because of this, the light inside the duct
Is limited, and the degree of freedom in design is low.
If the components are dense, such as around the photoconductor,
Cause obstacles. Therefore, if such a system is adopted,
It will increase the size of the fan, complicate the duct shape,
Also, increase the number of rotations of the fan and limit the place where light is introduced.
Processing is required, but the size of the equipment and the ease of assembly
Lowering, fan rotation noise becomes remarkable, freedom of design
Undesirable problems such as lowering occur. Further, among the conventional ozone removal techniques using light,
In the case of using fluorescent light exposure lamp light,
There is technology. Japanese Unexamined Patent Application Publication No.
In the description of JP-A-3-62054, the inside of the duct is exposed.
With white light emitted from a fluorescent light source
Decomposes ozone. However, this light source is originally used for exposure.
Therefore, white light is used, and the fluorescent light source for exposure is used.
The white light emitted from the lamp is applied to the inner tube wall of the fluorescent lamp.
Caused by exposing the fluorescent material to ultraviolet light,
Only about 20% of the input is white light and ozone
Since the resolution is higher for UV light than for white light, the light source for exposure
Fluorescent lamp performance is sufficient for the two purposes of
Cannot be said to be pulling out. [0017] In the conventional ozone removal technology, heat is removed.
There are the following technologies for the ones used. The conventional example
JP-A-3-94279, which can be mentioned as
Has a heater in the duct to increase the air temperature in the duct.
Heat with the heat of the heat exchanger and heat conduction to the outside of the duct
To prevent the temperature from dropping and reduce the ozonolysis efficiency
For this purpose, cover the duct with heat insulating material to
Extends filter life and eliminates the need for ozone filters
The technology is disclosed. However, in this disclosure, heating
The heater as a means is provided around or inside the duct.
To prevent parts around the heater, such as duct means, from heating up.
To prevent this, a heater temperature control means is required. So
And simply shine light into the ductPlaceWhen they are together, illuminate the light
Ozone will be decomposed only in the radiated space. The above-mentioned conventional example also shows
Related to technology that improves the efficiency of use of Zon filters
Before the air containing ozone passes through the ozone filter
Discloses a technology for uniformizing the air flow velocity distribution in the cross section of the flow path.
ing. This is due to the ozonolysis or absorption of the ozone filter.
As the performance of wearing, ozone passing through the ozone filter
The contained air acts to decompose or adsorb the ozone filter.
Depends on the time of contact with the
When the thickness is constant, it depends on the air flow velocity.
Adsorption or decomposition rate is high in the slow part of the air flow of the filter
Deterioration rate is fast, and the air flow rate of the ozone filter is fast.
The lower the degradation rate, the lower the adsorption or decomposition rate
The flow rate is required for efficient use of the entire ozone filter.
This is because averaging is required. One example is an ozone filter flow path upstream side.
In the high-velocity region, a wind shield is provided to block air.
Once the air in the area is collected in the slow flow velocity area, the suction power of the fan
The high velocity region created by the high
The air flow collected in the slow flow velocity region by the suction force is sucked again,
Slow flow velocity region caused by low fan suction area
In addition to the inertia of air movement,
Uniform air flow velocity distribution in the cross section of the flow channel
(JP-A-62-296166). However, in this example, the ozone fill
When the wind shield is placed close to the filter,
The flow concentrates in the area that is not oriented, and the effective channel cross section is narrow
The flow velocity increases, the ozone removal rate decreases, and
Ozone filter is partially used, so ozone
It is necessary to keep a certain distance between the filter and the wind shield. so
Then, a vortex is generated behind the wind shield in the flow direction
As a result, the flow velocity is unstable
Problem. [0022] A second example is that the upstream side of the ozone filter
A mesh filter with a uniform thickness is provided.
When passing through the filter, meshfilterInternally
The air flow that collides with the mesh of the
The flow velocity distribution in the direction perpendicular to the cross section of the flow path
become. However, in this example, air is present in the mesh portion.
Because it uses the phenomenon that the flow direction dissipates due to collision,
The effect of equalizing the flow velocity distribution in the mesh filter is
Not expensive, meshyfilterAnd between the ozone filter
The problem is that you need to provide a considerable distance
You. A third example is an upstream side of the flow path of the ozone filter.
Provide a plurality of flow straightening plates or stitch nets in
Dissipates the air flow in the area and distributes it to areas with low flow velocity
And make the flow velocity or flow rate just before the ozone filter uniform.
The ozone filter is partially deteriorated and the overall life is short.
(Japanese Unexamined Patent Publication No. 4-242271)
Information). However, in this example, the air flow in the fast region is
In order to dissipate and distribute the
A considerable distance is required between the net and the ozone filter.
The problem is that it is important. In addition, harmful substances such as ozone are removed from the main body of the apparatus.
Filter and fan inside the unit to prevent
To circulate inside the device without discharging air to the outside of the device.
(Japanese Patent Application Laid-Open No. 3-137656)
is there. Here, a duct for exhaust heat is provided separately.
Have been. However, in this example, the charging device is placed on the back of the charging device.
To remove the ozone generated by the charging device.
Therefore, air around the photoconductor outside the charger is sucked.
Is contained in the air near the photoreceptor
Scattered toner passes through the charging device and discharge stability is short-term
The problem arises that it decreases between the two. [0028] SUMMARY OF THE INVENTION The present invention relates to the above-described configuration.
Corona discharge was made in view of the problems of the existing technology.
Forming apparatus provided with means for treating ozone generated from the means
The ozone treated through the duct means
Collecting efficiently, photodecomposition (pyrolysis) of ozone in the duct
Efficiently perform and the device configuration of the ozone treatment means
Large, complicated, reduced assemblability, and increased noise
And an image format with the ozone treatment section
Not reduce the degree of freedom of design of the entire equipment
Is the task. Also,, OhAs a device configuration of the zon processing means,
It is an object to reduce the size and simplify. [0030] [0031] According to the first aspect of the present invention, there is provided a photosensitive member.
A corona discharger that contributes to image formation of the photoreceptor;
Fluorescent lamps that contribute to the imaging of light bodies and the corona discharger
In order to collect the generated ozone, the air containing the ozone is passed through.
An image forming apparatus having a duct means.
A fluorescent substance is applied to the inner tube wall of the fluorescent lamp in one of the fluorescent lamps
UV light generated between the electrodes of the fluorescent lamp
White light that emits white light that contributes to image formation on the light emitting surface
A fluorescent substance is applied to the radiation area and the inner tube wall of the fluorescent lamp.
Ultraviolet light generated between the electrodes of the fluorescent lamp
Ultraviolet radiation to decompose ozone in the duct means.
And the firing rangeThe ultraviolet radiation range of the fluorescent lamp
Provided in a length area outside the area determined by the imaging correspondence length,
The trajectory where the ultraviolet radiation area moves is the same as the duct means.
Parallel, and the ultraviolet radiation of said duct means
A transparent member is provided on the surface facing the area so that the fluorescent lamp is moving.
The ultraviolet light continuously enters the duct means, and the transparent member
So that it can be illuminated throughSpecially
It is a sign. [0032] [0033] [0034] [0035] [0036] [0037] [0038] BRIEF DESCRIPTION OF THE DRAWINGS FIG.
An embodiment will be described. Note that these embodiments
Of course, the invention should not be limited. FIG.
Is a copy machine according to an embodiment of the image forming apparatus of the present invention.
The outline is shown as a sectional view. An optical system 2 is arranged at an upper part in the main body 1 of the copying machine.
However, the optical system 2 includes a halogen lamp or
Copy lamp 3 composed of a fluorescent lamp and a plurality of mirrors 4-
7 and a zoom lens 8. Of the above optical system 2
A photoconductor 21 is rotatably supported below. Exposure
As is well known, a charger 22 and a developing unit are provided around the body 21.
23, a transfer unit 24, a static eliminator 25 and the like are arranged. The copying operation in this part is as follows.
The surface of the photoconductor 21 is charged to a predetermined potential by the charger 22.
The mirror base is moved in the A direction with the
The original (not shown) covered by the
Irradiation is sequentially performed from the tip at 3. Then, the reflected light from the original passes through the optical system 2.
Exposed on the photoconductor 21, and
An electrostatic latent image is formed on the image. Also, above the copying machine body 1
Document feed path 2 in automatic document feeder 27 arranged
8, the original is not conveyed by the drums 29a, 29b, etc.
In addition, slides (not shown) provided at two places in the document conveying path 28 are provided.
Originals are ordered from the leading edge by copy lamp 3
Next, the reflected light from the original is exposed in the same manner as above.
The body 21 is exposed. An electrostatic latent image is formed on the photosensitive member 21.
Then, the electrostatic latent image is supplied from the developing unit 23.
The toner image is formed by developing with the toner. That
Later, the drawing is performed from a sheet feeding unit 30 having a plurality of sheet cassettes and the like.
Paper is sent to the registration roller 31, and this paper is
Stopped temporarily by the registration roller 31 if necessary
Thereafter, the toner is supplied to the photoconductor 21 at a predetermined timing. Soshi
The toner image is transferred by the transfer device 24 onto the supplied paper.
Transcribed. Thereafter, the paper is peeled from the photoconductor 21.
Is transported to the fixing unit 33 by the transport device 32,
After the toner image is fixed in
It is discharged to the discharge tray 34 as it is. On the other hand, in the case of composite copying or double-sided copying,
The sheet discharged from the receiving section 33 is sent to a sheet transport path 35.
If it is a composite copy, it is discharged to the intermediate tray 36 as it is.
On the other hand, in the case of double-sided copying, the reversing unit 37
Is discharged to the intermediate tray 36 after being inverted. During ~
When a predetermined number of sheets are accumulated in the
The paper on the tray 36 is the uppermost sheet by the feed roller 38
And then sent to the photoreceptor 21 for subsequent copying
Is performed. FIG. 2 shows a copying machine according to an embodiment of the present invention.
1 is a schematic circuit block diagram of FIG. First,
The CPUs include a master CPU 40 and a slave CPU 41.
The slave CPU 41 controls the operation circuit 44.
I will do it. The operation circuit 44 includes a display unit circuit 45 and an operation unit circuit.
Path 59 is connected, and screen display and operation key input are performed.
Perform control. The master CPU 40 is provided with components other than the operation unit of the main body.
Control, for example, the heater lamp lighting circuit 4
6, copy lamp lighting circuit 47, process control circuit 4
8, a motor drive circuit 49, etc. are connected. Incidentally, the copying machine 1 shown in FIG.
Charger 22 for charging the placed photoreceptor, toner on the photoreceptor
-Transfer unit 24 for transferring images to paper, or peeling char
Device such as a roller, or a color copier (not shown)
Toner from photoreceptor such as transfer belt used for
-Used to transfer images to paper after temporarily supporting the image.
The charger, transfer device, and peeling means used are corona
DischargewireRollers such as shape, sawtooth, and roller
It has a discharger. Such a device utilizes corona discharge.
Ozone is generated inside the aircraft during operation
However, because this ozone is unstable in the natural world, copiers
Reacts with components inside to degrade its performance. For example, feeling
When the photoreceptor is attacked by ozone, the characteristics of the photoreceptor change and the image
Problems with the equipment, such as blurred air, or exhaust
It is also harmful to the human body.
You. For these reasons, the audio generated in the copying machine
The air is drawn into the exhaust duct together with the air, and the ozone
Decompose or adsorb ozone with an ozone treatment device such as
Reduces ozone concentration in air to a level that does not cause problems
And exhausted outside the aircraft. (First Reference Example) An embodiment of the present invention will be described.
Prior to the description, the present embodiment will be described with reference to FIGS.
You. As shown in FIG. 3, a duct hand for sucking ozone
The stage 101 is disposed near the charger 22 and the transfer device 24.
With a suction opening 101a (see FIG. 3B).
Exhaust for exhausting air from one end to the outside of the copier body 1
Toward the other end provided with the opening 101b
Is formed. In the vicinity of the exhaust opening 101b
So that the ozone flowing through the duct means 101 passes through
An ozone filter 102 is provided.
From the suction opening 101a on the upstream side of the
Exhaust air that draws in air containing
Fan 100 is provided. Then, as shown in detail in FIG.
Further upstream of the fan 100, the wall of the duct means 101
Partially cut-out part 101c is transparent as a transparent member
The member 101d separates the inside and outside of the duct means.
Is pasted on. For this reason, the duct means 101
When the exhaust fan 100 is activated,
The suction pressure of the suction opening 101a of the means 101 decreases.
Is prevented. The duct is formed by this transparent member 101d.
A pair with the light transmitting portion 101e formed on the wall surface of the means 101
A light source 103 is provided outside the facing duct means 101.
Light emitted from the light source 103 is directly reflected or reflected.
The duct is reflected by the cover 300 having the member 301.
Of the duct means through the light transmitting portion 101e of the means 101
Irradiated inside. A corona discharger provided in the copying machine
Ozone generated from the charger 22 and the transfer device 24 is exhausted.
Duct means 1 for sucking ozone by the action of fan 100
01 is sucked together with air from one end of the duct means 1
Light transmitting part 1 provided on a part of the wall in the middle of the flow path 01
01e receives the action of light incident thereon. Here, the ozone subjected to the action of light is extremely
And easily decompose by light.
Photochemical reaction by receiving light from transparent part 101d while flowing
Cause O_Three+ Hν → O_Two+ O (hν: energy of light
G), O + O_Three→ 2O_Two, And so on, no copying machine, no human body
Decomposed into harmful oxygen. Here, the light absorbed by ozone
The wavelength is 305 nm or less and 405 to 1100 nm.
It is known that Ozone not decomposed by light is
Is sent to the air filter 102 and adsorbed or decomposed,
The ozone concentration in the air exhausted to the outside of the machine body 1 is low.
Down. The above-mentioned light source 103 is used for an image forming operation of a copying machine.
While the corona dischargers 22, 24 are operating for operation
Is turned on or blinks at least,
Duct means 101 through light transmitting portion 101e provided on the wall
Lighting control by the master CPU to illuminate the inside of the
Done. The light transmitting portion 101e is provided with the duct means 101.
Hard member such as glass, transparent
Even if a flexible member such as a sheet is attached and formed
Well, the duct means 101 is molded with a transparent resin
May be formed. Further, as shown in FIG.
By providing an opening 101f having a rib 101g on the wall surface,
The transparent member 101d is held in the opening 101f.
The light source holder 302 having the light source 103
Thus, while maintaining the confidentiality of the duct means 101, the duct means
Light may be irradiated inside 101. In this case, FIG.
As described above, it comes into close contact with the duct means 101 of the light source holder 302.
Sealing part such as rubber material or discontinuous foam sponge material
The provision of the material 303 further enhances the confidentiality. Here, light is efficiently used for decomposing ozone.
From the viewpoint of performing the light source 103, as shown in FIG.
Is surrounded by a cover 300 provided with a reflective member 301 on the inner surface.
There is a method to prevent the cover light from leaking to the outside.
Referring to the relationship between the material of the excess portion 101e and the wavelength of light,
Since the light transmission ratio of a material depends on the wavelength of light,
Basically, a wavelength range where the light emission intensity of the light source 103 is large and a light transmitting portion.
In order to overlap the wave delay region where the light transmittance of the material 101e is large.
If both are selected, most of the light energy will be transmitted and the light will be effective.
Can be used to decompose ozone efficiently. FIG. 7 shows an example. As shown in FIG.
When the light of the light source 103 has an emission wavelength like laser light or LED light
The area 310a is narrow and close to monochromatic light, or FIG. 7 (B)
Light emission wavelength like halogen lamp or fuse bulb
Although the area 310b is wide in some cases,
, The light transmission wavelength range 311 of the light transmission unit 101e.
a, 311b, 311c are the light emission wavelength ranges 310a,
What is necessary is just to make it overlap with 310b. Incidentally, the decomposition of ozone differs depending on the wavelength of light.
It is known that this is a photochemical reaction.
The limit wavelength is indicated, but the higher the wavelength, the higher the decomposition efficiency
It is. Common light sources have a fairly wide emission wavelength range
Therefore, the photochemical reactions in Table 1 proceed in parallel. [0060] [Table 1]Accordingly, the luminous intensity in the luminous wavelength range of the light source is simply obtained.
The light transmittance of the light transmission part overlaps the part with large
Is not sufficient in terms of efficiency, as shown in FIG.
As shown, the light intensity distribution 310 of the light source shows the ozone decomposition rate for each wavelength.
The ozone resolution curve 312 taking into account the
If the excess rates 311 overlap, the light is used more efficiently.
Can be used. FIG. 9 shows a second reference example of the present invention.
FIG. 3 is a diagram for explaining the configuration of the example and its operation.
is there. In the copying machine having the structure of the first embodiment, the duct means
A duct through which light is guided through the transparent member 101d of 101
Mirrors, metal film deposition members, aluminum sheets, etc.
A reflective member 104 is provided so that the light guided into the duct
To make multiple reflections. With such a structure, the area of the transparent part
Even when the area is small, the light travels inside the duct, so the existence of light
The region (= ozone decomposition region) becomes large. According to the example shown in FIG.
When there is no light, the light exists only in area A
Then, by providing the light reflecting member 104, the area is expanded like the part B.
Will be. The operation of the ozone photolysis means of this reference example is as follows.
The difference from the embodiment of the first reference example is that
Absent. FIG. 10 shows another embodiment of the present invention.
You. The end of the duct means 101 has an ozone filter 10
2 is provided, and the opening 101f of the duct wall on the upstream side is
The light member 103d is attached to the
And the reflection member cover 320 arranged on the back side of the light source
The reflected light is applied to the inside of the duct means 101. Further, an exhaust fan 100 is provided on the upstream side.
Ozone is drawn from the end of the duct (not shown).
To the ozone filter side. In this case,
The light introduction part of the port means 101 is sealed with a transparent member 101d.
Therefore, the ozone filter 102 becomes a flow path resistance,
It occurs between the ozone filter 102 and the exhaust fan 100.
The exhaust fan through the opening 101f of the duct means
Part of the air containing ozone sent from 100
Does not leak out of the port means 101. Then, the ozone filter 102 and the exhaust fan
A light reflecting member on the inner wall of the duct means 101 between
104 is attached and irradiates inside duct means 101
The reflected light is reflected inside the duct means 101, and
Duct means 10 between the filter 102 and the exhaust fan 100
1 Make light exist in the space inside, and ozone
It is configured to perform a solution. Further, the light on the inner wall on the upstream side of the exhaust fan is
The absorption member 105 is attached, and the ozone filter 102
Is black, which absorbs light.
It arrives and irradiates the photoreceptor (see Figs.
Influence on the image forming operation such as uneven charging of the light body
To prevent light from leaking out or leaking out of the device.
I have. Note that the light absorbing member 105 is a
The duct means 101 may be provided near the Rona discharger.
It may be formed of a black resin material. As described above, in this reference example, the duct means
101, a transparent portion 101d is provided on the wall of the transparent portion 101.
1d, irradiate light into the duct and
The ozone suction pressure is reduced due to maintaining airtightness
No fan 100 prevents fan 100 from becoming large, duct shape
Simplifies assembly, improves fan noise, reduces design
Can be prevented from lowering. (Third Reference Example) FIG. 11 shows a third embodiment of the present invention.
Figure showing the configuration of the reference example and its operation
It is. In the copying machine having the configuration in the first reference example,
Light is guided through the transparent member 101d of the
The infrared light component is absorbed and emitted to 101 h inside the duct
Providing a heat absorber 106 that heats up, raising the temperature inside the duct
Ozone photolysis and thermal decomposition are performed in combination. This
Here, ozone rapidly self-decomposes when the ambient temperature rises.
It is known to be faster, and O
_TwoDecomposed into harmless. Usually, the temperature of the ozone stream guided into the duct is
T₁(° C.) and ozone after passing through the heat absorber 105
The flow temperature is T_Two(° C), T_Two> T₁Becomes Heat absorption
For the collector 105, a material intended for those uses
Is best, but absorbs infrared wavelengths such as black paint.
It may be a metal or resin member coated with paint to be collected. FIG. 12 shows the relationship between the ambient temperature and the decomposition rate of ozone.
3 shows a graph showing the relationship. As shown here, ozone is
Degradation is significantly accelerated when the surrounding temperature rises
The ozone decomposition performance is improved by combined use with photolysis
I do. The operation of the ozone photolysis means of the present invention is as described above.
First reference exampleIn the embodiment ofThingsThe place that changes
Absent. (4thReference example) FIG.4thDiagram for explaining the reference example and its operation
It is shown. For the copier of the configuration in the first reference example
Here, the transparent member 101d of the duct means 101 is
Light that enters the duct from the light source
Increasing the amount and increasing the strength. Ozo of the present claim
The operation itself of the photolysis means is the same as that of the first embodiment.
There is no difference from the embodiment. And illustrated
Although the method of this reference example is not performed, the second and third reference examples
By using this method together, the effect of decomposing ozone can be further improved.
Will increase. [0073](Fifth reference example) FIG.Fifth reference exampleDiagram for explaining the function
It is shown. In the copying machine described with reference to FIG.
The original moves relatively while the bee lamp 3 remains at the fixed position.
In the configuration where the original image is sequentially irradiated
A fluorescent lamp is used as 3. This fluorescent light
And apply a fluorescent substance to the inner tube wall.
White light emitting region that emits white light when exposed to ultraviolet light
The region 3a and the ultraviolet ray are directly irradiated without applying to the inner tube wall.
And the ultraviolet radiation region 3b to be irradiated.
You. Then, the light is irradiated from the ultraviolet radiation region 3b.
Duct 10 that collects and exhausts ozone inside the machine
1 to the inside from the transparent member 101d,
The ozone in the air duct 101 is decomposed. Here, the photolysis of ozone is performed as described above.
Decomposition is also performed in the wavelength region corresponding to visible light. Only
However, decomposition with visible light (340 nm or more)
Decomposes by UV light, while not decomposable
And its chain reaction occur, and it is more than three times
It is known to be decomposed with efficiency. In addition to this, water
In the presence of steam, the chains are further increased and visible light (especially long
Is about 60 times more efficient than
Have been. [0076](Sixth reference example) FIG.Sixth reference exampleLCD shutter system pre
The following shows an example using a white light source in the printer. Lcd chassis
White light emitting area 3 of the image signal light source 3 through the
The light from a irradiates the photoconductor 21. And light source 3
Light from the ultraviolet radiation region 3b is transmitted to the transparent portion of the duct 101.
The light passes through the material 101d and enters the duct 101. ThisSixth reference exampleThe operation according to FIG.
Corona discharge not shown in the figure
Generated from vessels 22 and 24 and flowing through duct means 101
Irradiate the ozone with ultraviolet light through the transparent member 101d,
Break down the dzon. In this case, it also contributes to image formation
As the light of the fluorescent lamp, the back light from the liquid crystal shutter 120, etc.
It will be included to increase ozone decomposition rate.
Will be used. [0078](Seventh Reference Example) FIG.Configuration of the seventh reference exampleFIG. the abovethree
ExampleIn the copying machine having the configuration shown in FIG.
As can be seen from the result, the fluorescent lamp 3 (3a, 3
b) Make the length longer than the image forming area. Shown here
In the case of the copy lamp 3 to be illuminated, the original width area 107 to be illuminated
Irradiation is possible up to the outside document outside area 108. Then, one copy lamp 3 (fluorescent lamp)
In the document irradiation area 107, a white light emission area 3a is provided.
16 (A).
As shown in FIG.
The external radiation area 3b is arranged in a corresponding positional relationship. ThisReference exampleThe operation of ozone photolysis means
explain. The copy lamp 3 is operated by the operation unit 59.
When the copying operation is started, the control of the master CPU 40 is started.
Operate by control. At this time, the white light of the copy lamp 3
The radiation area 3a irradiates the original with white light,
At the same time, the ultraviolet radiation region 3b is generated during image formation.
Part of the area where ozone flows through the duct 101
Irradiate external light to photodecompose ozone in duct 101
You. In FIG. 16A, the copying machine 1 is
FIG. 2 shows the duct 1 at the bottom of the fluorescent lamp 3.
01 is located. During the copying operation, the ultraviolet radiation area 3b
Irradiates downward from above and is positioned on the upper surface of the duct 101.
Ozone through the transparent member 101dUnderstandYou. [0082](Embodiment) FIG.FruitThe composition and operation of the embodiment
FIG. In the above embodiment,
FIG. 17 (A) shows a copy machine having the above configuration.
As can be seen from the figure, the length of the fluorescent lamp 3 (3a, 3b) is
Longer than the active area. In the case of copy lamp 3, irradiate
Irradiation up to the outside area 108 outside the original width area 107
To be Then, one copy lamp 3 (fluorescent lamp)
In the document width area 107, the white light emitting area 3a is paired.
17 (A).
As shown in FIG.
The line radiation areas 3b are arranged in a corresponding positional relationship. this
The operation of the ozone photodecomposition means of the embodiment will be described. here
Then, the copy lamp 3 is operated by the operation unit 59.
When the copying operation starts, the control of the master CPU 40 starts.
17 moves in the scanning direction (arrow) shown in FIG. At this time, the white light emission area of the copy lamp 3
3a irradiates the original with white light and simultaneously
The ultraviolet radiation region 3b is formed of ozone generated during image formation.
Irradiates a part of the area flowing through the duct 101 with ultraviolet rays.
And ozone in the duct 101 is photolyzed. In FIG. 17A, the copier 1 is moved upward.
FIG. 3 shows the ultraviolet radiation region 3 of the fluorescent lamp 3.
b The duct 101 is located below. Especially copy operation
Time, the trajectory of the ultraviolet radiation region 3b moves parallel to
Position, and when irradiating UV light downward while moving,
Through the transparent member 101d located on the upper surface of the duct 101
Position is constantly irradiating the inside of the duct with ultraviolet rays.
You. FIG. 18 shows a copy machine 1 to which the present invention is applied.
1 shows a plan view of an optical system 2. FIG. The lamp unit 330 is
An exposure lamp 3 composed of a light lamp and a mirror 4 are integrally provided.
In the mirror unit 331, the mirrors 5 and 6 are integrally formed.
Provided and drivenwire333 and pulley 334
Each speed on the unit support 332 is 2 pairs
Move so that it becomes 1. FIG. 19 is a block diagram of the copying machine 1 shown in FIG.
It is a figure showing an important section of an embodiment using light. In FIG.
19, the document width area 107 in FIG.
In addition, the inner surface of the tube wall of the fluorescent lamp 3
The area 3a is coated with a material, and is exposed to light for exposure.
It is fireable. In the area 108 outside the document, the duct
No fluorescent material is applied to the inner surface of the tube wall opposite to 101
By providing a region 3b, the ultraviolet light generated inside the fluorescent lamp tube
Irradiation inside duct 101 through transparent member 101d
It has become. In this case, the ultraviolet radiation region 3b is covered with a cover.
Enclosure to prevent UV light from leaking out of the duct
It would be even better. The operation according to this embodiment is described above.
This is the same as the embodiment relating to FIG. (No.8Reference example) 20 and 218Configuration of the reference example and its
FIG. 3 is a diagram for explaining an operation state. In FIG.
Exhaust fan 10 from the side or rear of copying machine 1 described
0, duct means 101 and ozone filter 102
Ozone treatment for processing and exhausting ozone generated inside the machine
In the processing equipment, it can be removed around the copier 1
Duct means formed integrally with the exterior 130 provided in the
Exterior duct portion 130 which is combined with 101 to form an exhaust path
a is provided. When the exterior 130 is removed from the copying machine 1,
The ozone filter 102 is the outermost part of the device body or exterior 130
It is provided at a position exposed to the part. In the example shown in FIG. 20, the outer duct portion 130a is
The ozone filter 102 is disposed, and the exterior 130 is
1 removes the ozone filter 102 from the exterior 130
The filter is exposed on the back side of the
I can do it. Similarly, in the example of FIG.
Filter 102 with the exterior duct portion 130a and the duct means 101
When the exterior 130 is removed, the ozone
Filter 102 is exposed at the end of duct means 101
You. (No.9Reference example) FIG.9Configuration and Operation of First Embodiment of Reference Example
FIG. Fig. 3
In the copying machine ozone treatment apparatus described above, the duct means 1
01, the ozone exhaust fan 100 and the downstream side of the fan.
An ozone filter 102 is provided. In this case,
Only the wind speed distribution passing through the ozone filter 102
Is the effect of the wind speed distribution exhausted by the exhaust fan 100.
Accordingly, the wind speed distribution is greatly different in the cross section of the flow channel. ThisForm ofThe state is basically the same as FIG.
With the configuration (the corresponding part is shown in FIG.
An example in which an axial flow type fan is used as the fan 100
The ozone blown out of the exhaust fan 100
As shown in FIG. 22 (D), the wind speed is almost
It does not flow (S part), the wind speed of the blade part is fast when viewed from the front
(Part F) Donut-shaped distribution. In this case, the filter
There is little ozone flow in the center, so ozone filter
Effective use of all ozone adsorption surfaces or all ozone decomposition surfaces
However, the wind speed of the donut part increased and the ozone
Filter removal efficiency is also reduced. Therefore, as shown in FIG.
The doughnut-shaped area F has a large resistance L and a slow wind speed.
The resistance is provided with a small resistance M part in the central part S area.
As shown in FIG.
Installed upstream of the In FIG.
Fan 100 is provided further upstream of resistance applying means 140.
But provided downstream of the ozone filter 102
No problem. The sky having the wind speed distribution on the upstream side of the resistance applying means
Ki gives resistance according to the wind speed distribution by the resistance applying means.
Each channel in the resistance applying means (ozone filter
Cell), the wind speed is almost uniform,
After the passage through the step 140, the wind speed distribution as shown in FIG.
Is homogenized. FIG. 22 shows the structure of the resistance applying means 140.
As shown in (B), the passing wind speed in the cross section inside the duct is almost constant
The effective use of the entire area of the ozone filter,
Thus, the filter removal rate is improved. In this case, in FIG.
A fixed distance between the filter 102 and the resistance applying means 140
Although it is configured to provide a space, the ozone filter 1
02 and the resistance applying means 140 may be close to or in contact with each other.
No. This is because the wind speed distribution is uniformed
Space is always necessary downstream.
It is not necessary. FIG. 22A shows an ozone filter.
The resistance applying means 140 is arranged on the upstream side of 102
Is located downstream of the ozone filter 102.
0 may be arranged. Above the resistance applying means 140
On the downstream side, the resistance applying means is a kind of dam
The region where the wind speed distribution is uniform is located upstream of the resistance applying means.
On the downstream side of the ozone filter 102
When the resistance applying means 140 is brought into close contact with the
40, pass through the ozone filter 102
The wind speed distribution will be almost uniform. Also in this case, the position of the exhaust fan 100
Is the upstream side of the ozone filter 102,
0 may be located downstream of the exhaust fan 10.
0, the speed distribution on the suction side of the exhaust fan 100
Since the speed difference is smaller than the speed distribution, the exhaust fan 100
Is arranged so that the resistance applying means 140 is positioned on the suction side of
Is more preferable. The filter material is activated carbon
To a substrate made of paper or ceramic
Use the one that has been FIG.9Structure of the second embodiment of the reference example
FIG. 3 is a diagram for explaining the configuration and the operation thereof.
In the ozone treatment apparatus having the configuration of the first embodiment,
Here, the resistance applying means 140 is
The resistance varies depending on the length of the flow path through which the air passes.
The high wind speed area in the duct section on the upstream side
The region where the thickness of the anti-giving means 140 is large and the wind speed is low is
The thickness of the resistance imparting means 140 is reduced,
The wind velocity distribution in the duct after passing through 140 is made uniform. What
The material of the filter is the same as that shown in the above form.
Can be used. FIG.9Configuration of Third Embodiment of Reference Example
FIG. 2 is a diagram for explaining the configuration and the operation thereof. The second
In the ozone treatment apparatus having the configuration of
If the fan 100 is an axial fan, the resulting wind speed distribution is
FIG. 24B shows a cross section taken along line CC ′ of FIG.
Will be able to Therefore, the resistance applying means 140
The thickness of the resistance part is the ratio of the part around the rotation axis of the
Relatively thin, doughnut-shaped structure with thick wings
Good. This resistance applying means 140 is similar to that shown in FIG.
It has the shape shown in (D), inside the duct after passing
Since the wind speed distribution is uniform, it can be called a rectifier
Good. FIG.9Configuration of the fourth embodiment of the reference example
FIG. 2 is a diagram for explaining the configuration and the operation thereof. The second
In the ozone treatment apparatus having the configuration of
100 is for sirocco fans or cross low fans
In this case, the resulting wind speed distribution is shown in FIG.
Therefore, the resistance applying means 140 is located at the center of the fan.
Has a thicker structure as it approaches the circumference from
It has a shape as shown in FIGS. 25 (B) and (C).
Uniform wind speed distribution in the duct after passing through the resistance applying means 140
I do. FIG.9Fifth Embodiment of Reference Example
FIG. 2 is a diagram for explaining the configuration and the operation thereof. The first
In the ozone treatment apparatus having the configuration of the embodiment,
The wind speed distribution by the air fan 100 is indicated by C- in FIG.
As shown in FIG. 26B showing the C ′ cross section,
As shown in FIGS. 26 (C) and (D),
In areas where the wind speed is high, the density of the voids in the resistor is high,
The slow part has a low density structure, and the resistance applying means 140
Make the wind speed distribution in the duct after the passage uniform. Here, FIG.ShapeState, axial flow
A fan was used, but a sirocco fan or black fan
Of course, it can be used with a sflow fan. Ma
In the example of FIG. 19, the density of the voids in the resistor is two.
But they are composed of
May be continuously changed.
However, it is possible to further enhance the effect of uniformizing the wind speed. FIG.9Structure of the sixth embodiment of the reference example
FIG. 2 is a diagram for explaining the configuration and the operation thereof. The fifth
In the ozone treatment device with the configuration of
Resistance applying means 14 in which the density of the voids of the resistor is changed
Add ozone decomposition function of metal catalyst, activated carbon, etc. to 0
By using it as an ozone filter,
The ozone filter according to the embodiment shown in FIG.
The router 102 itself is not required, and is shown in FIG.
As shown in Fig.
The configuration requires only the step 140. FIG. 289Structure of the seventh embodiment of the reference example
FIG. 2 is a diagram for explaining the configuration and the operation thereof. The fifth
Wind velocity distribution in an ozone treatment device
In the range where the wind speed difference is within a certain value,
For multiple areas, corresponding to the representative flow velocity in each area
Combining resistance applying means 140 with gap density for each area
Then, they are integrally disposed in the duct 101. In the wind speed distribution shown in FIG.
If the wind speed distribution in the duct 101 is changed as shown in FIG.
It is assumed that the image is divided into three stages: high speed, medium speed, and low speed. This place
In this case, the resistance applying means 140 is as shown in FIG.
is there. As shown in FIG. 28 (B), high speed, medium speed, low speed
The average flow velocity of each area is set as the representative flow velocity of each area,
Depending on the flow velocity, high-density H section for high-speed section, medium-speed section
M part with medium density and L part for low speed part with low density
One is prepared and provided in the duct 101. Illustrated in FIG.
In the resistance applying means 140, the H portion, the M portion,
An example of combining three L parts and attaching them to one place
Show. FIG. 29 is a9Configuration of Eighth Embodiment of Reference Example
FIG. 2 is a diagram for explaining the configuration and the operation thereof. Illustrated in FIG.
Ozone treatment apparatus,
Reduce the surface roughness of the inner wall surface of the duct 101 on the upstream side.
In accordance with the wind speed distribution in the
The slower one is composed smoothly. In FIG. 29, sirocco
A fan configuration is shown. Sirocco fan 10
0 indicates that the wind speed is higher in the outer circumferential direction (upward in FIG. 29).
Distribution. Therefore, roughen the upper (A side) surface.
To reduce wind speed by increasing surface losses. Conversely, lower side
The surface of (B side) is configured smoothly to reduce loss,
Suppress the decrease in wind speed. Sky where the wind speed was reduced on the A side
Air flows to the B side, and the wind speed distribution in the duct is uniformed.
You. (No.10Reference example) 30 to 3510Configuration of reference example and its configuration
FIG. 3 is a view for explaining the operation of the embodiment. This form is
The screen feel is enhanced by involving the charger as in the
Based on the electrostatic latent image formed on the photoconductor, an electrostatic latent image is
Form, develop the latent image and engage the transfer unit on the paper
In the case of transfer, or one exposure
Develop the electrostatic latent image formed on the body on the same photoreceptor
When an image is formed and transferred by involving a transfer device (FIG. 1)
The copier described in this section is based on this method)
The present invention is also applicable to an image forming apparatus of a system. FIG. 30 shows an image formation having a corona discharger.
An ozone treatment system provided for the above system
FIG. 31 shows the main part of FIG.
It is a figure showing a partial section of a Rona discharger. Generally, photosensitive
The body 21 is exposed to the outer peripheral surface of a metal pipe made of aluminum or the like.
A layer is formed, and the inside is a space. Therefore, this space which is not originally used is made effective.
In order to utilize, ozone filter 102 and blade 150
A roller provided fixedly on the inner wall of the photoreceptor 21 and disposed adjacently
The discharge space 200 (see FIG. 31) inside the discharger 22 is
Communicates so that it communicates with the inside of photoconductor 21 as an air flow path
Duct 111 on both sides of photoconductor 21 and corona discharger 22
Provide at the end. FIG. 32 shows a schematic structure of the photosensitive member 21.
This is shown as a perspective view, and as shown in FIG.
1 are provided with flanges 201 and 202 at both ends.
The shaft portion 201a and the circumferential portion 201b of the
01c and a gap 20 between the rims 201c.
3, the shaft portion 201a of the flange 201 has
Through the through hole 111a of the communication duct 111,
A rotation support shaft (not shown) is inserted from the main body side.
Swelling. The flange 202 has the same structure as the flange 201.
In addition to the above, a gear 202a is integrally provided around the circumference.
ing.gearThe drive is transmitted to the
The light body 21 rotates, and the blade 150 is integrally formed with the rotation.
Since it rotates, the inside of the photoconductor 21, the communication duct 111
And between the discharge space 200 inside the corona discharger 22
The air flow circulates in the direction of the arrow inside and is emitted by the corona discharger 22.
The generated ozone is sent to the ozone filter 102, where it is removed.
Left. [0113] In order to improve the hermeticity of the circulation channel,
Will be described below. FIG. 33 shows the photosensitive member 2
FIG. 3 is a diagram showing a vertical cross section of a connection portion between the communication duct 1 and the communication duct 111;
As shown in FIG.
End 111b of communication duct 111 and flange 201
Around the peripheral part 201b with a slight gap,
As shown in FIG. 31, a corona discharge device
22 and the gap with the photosensitive member 21 by bringing the case side plate 22b into close proximity.
Ensure that ozone does not leak from between. And corona release
The flow path between the electric device 22 and the communication duct 111 is shown in FIG.
As shown in FIG.
Opening 204a in an insulating holder 204 that holds
It is connected by providing. FIG. 34 shows a case of a corona discharger.
In another figure, as shown in the figure, a corona discharger
22 along the longitudinal direction of the case side plates 206a and 206b.
Openings 207a and 207b are provided. And
FIG. 35 shows a series of corona dischargers 22 configured as described above.
It shows an embodiment that is covered with a passage duct,
As shown in the figure, the case side plate 20 of the corona discharger 22
A communication duct 111 is provided so as to cover 6a and 206b.
Therefore, it may be communicated with the inside of the photoreceptor 21 as in FIG.
No. In this case, the air circulating in the blade 150 is
One end of the corona discharger 22 from the communication duct 111
Through the opening 207a of the side plate 206a,
With ozone generated in the discharge space 200 around 205
From the opening 207b of the other case side plate 206b,
Flow out to the project 111. By doing so, the blade 150
The ozone to the ozone filter, even if the air pressure is low
The surface of the photoconductor 21 and the case side plate 20
6a and 206b to prevent ozone from leaking from the gap.
Can be further prevented. [0116] 【The invention's effect】As described above, according to the present invention,
Separates the light emission surface of fluorescent lamps that contribute to image formation, and creates white for image formation
It emits both light and UV light for ozone decomposition
This makes it possible for one light source to have two functions.
Can decompose ozone more efficiently than conventional technology
Will be. In addition, the use of moving fluorescent lights is
By placing the components, you can
The irradiation area of ultraviolet rays in the area becomes wider and decomposes ozone
Since the area is widened, the decomposition efficiency is increased. [0117]Also, Light source for manuscript imaging and ozone photolysis
Can reduce the amount of light required for imaging
Can emit ultraviolet rays necessary for ozone decomposition
become. [0118] [0119] [0120] [0121] [0122] [0123] [0124] [0125] [0126]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view showing an outline of a copying machine according to an embodiment of an image forming apparatus of the present invention. FIG. 2 is a schematic block diagram of a circuit in the copying machine according to the embodiment of the present invention. FIGS. 3A and 3B are diagrams for explaining a schematic configuration and an operation of the copying machine according to the first reference example, and FIG. 3A illustrates an ozone processing unit, and FIG. 3B illustrates a duct unit in a discharge space; It is shown. FIG. 4 is a view for explaining a configuration for irradiating light into a duct which is a main part of FIG. 3 and an ozone decomposing action by light. FIG. 5 is a diagram showing a specific configuration of an opening provided in a duct in a form similar to FIG. 4; FIG. 6 is a diagram showing another specific configuration in the same mode as FIG. 4; 7A and 7B show the relationship between the characteristics of a light source and a light transmitting portion, and FIG.
FIG. 7B is a diagram showing a case of a laser or an LED, and FIG. 7B is a diagram showing a case of a halogen lamp or a fuse bulb. FIG. 8 is a diagram showing a relationship between a characteristic curve of a light source and a light transmitting portion and an ozone resolution curve. FIG. 9 is a diagram for explaining the configuration and operation of the second reference example. FIG. 10 shows another embodiment of the second reference example. FIG. 11 is a diagram for explaining the configuration of the embodiment of the third reference example and the action of heat in ozonolysis. FIG. 12 is a graph showing the relationship between the ambient temperature and the decomposition rate of ozone. FIG. 13 is a diagram for explaining the configuration of the embodiment of the fourth reference example and its operation. FIG. 14 is a diagram illustrating a configuration of a fifth reference example and an operation of a fluorescent lamp for image formation. FIG. 15 shows a liquid crystal shutter type printer using a white light source as a sixth reference example . 16A and 16B show a configuration of a seventh reference example , in which FIG. 16A is a schematic diagram of the whole, and FIG. 16B is a cross-sectional view taken along the line CC ′ of FIG. [Figure 17] shows a diagram for explaining the structure and action of the implementation form, (A) the overall schematic view and a C-C'sectional view of (B) is (A). FIG. 18 is a plan view of an optical system 2 of the copying machine 1 to which the embodiment is applied. 19 is a diagram illustrating the main <br/> unit according to the embodiment of the copying machine 1 in FIG. 18. FIG. 20 is a view for explaining a configuration of an embodiment for making the ozone filter of the eighth reference example replaceable and an operation state thereof. FIG. 21 is a diagram illustrating a configuration and an operation state of an eighth reference example; FIG. 22 is a view for explaining the configuration of the first embodiment for equalizing the flow velocity in the cross section of the flow channel of the ninth reference example and its operation. FIG. 23 is a view for explaining the configuration and operation of the second embodiment of the ninth reference example; [24] shows the diagram for explaining the configuration and operation of the third form status of the ninth reference example. FIG. 25 is a view for explaining the configuration and operation of the fourth embodiment of the ninth reference example; FIG. 26 is a view for explaining the configuration and operation of the fifth embodiment of the ninth reference example; [27] shows a diagram for explaining in comparison with the sixth embodiment of the construction and operation (B) the previous form state of the ninth reference example (A). FIG. 28 is a view for explaining the configuration and operation of the seventh embodiment of the ninth reference example; FIG. 29 is a view for explaining the configuration and operation of the eighth embodiment of the ninth reference example; FIG. 30 is a view for explaining the configuration of the embodiment using the closed loop duct of the tenth reference example and its operation. 31 is a view showing a partial cross-sectional view of a photoconductor and a corona discharger in a main part of FIG. 30; FIG. 32 is a perspective view illustrating a schematic configuration of a photoconductor. FIG. 33 is a diagram illustrating a cross-sectional view of a connection portion between a photoconductor and a communication duct. FIG. 34 is a view showing another embodiment of the case of the corona discharger. FIG. 35 is a view showing a related configuration of a corona discharger and a communication duct of the embodiment of FIG. 34; 36A and 36B are diagrams for explaining the configuration and operation of a conventional device. FIG. 32A is a schematic diagram of a main part, and FIG.
Is a side view of the same device. FIG. 37 is a view for explaining a similar device obtained by modifying the conventional example of FIG. 32 and its operation. FIG. 38 is a view for explaining a similar device obtained by modifying the conventional example of FIG. 32 and its operation. DESCRIPTION OF SYMBOLS 1 Copier main body 2 Optical system 3 Copy lamp 3a White light emitting area 3b Ultraviolet emitting area 4 to 7 Mirror 8 Zoom lens 21 Photoconductor 22 Charger, corona discharger 22b, 206a, 206b Case side plate 23 Development Unit 24 transfer machine 25 static eliminator 26 document cover 27 automatic document feeder 28 document feed paths 29a, 29b drum 30 paper feed unit 31 registration roller 32 transport unit 33 fixing unit 34 discharge tray 35 paper transport path 36 intermediate tray 37 reversing unit 38 Paper feed roller 40 Master CPU 41 Slave CPU 44 Operation unit circuit 45 Display unit circuit 46 Lamp lighting circuit 47 Copy lamp lighting circuit 48 Process control circuit 49 Motor drive circuit 59 Operation unit circuit 100 Exhaust fan 101 Duct means 101a Suction opening 101b Exhaust opening 101c Partially cut-out portion 101d Transparent member 101e Light transmitting portion 101f formed on wall surface 101g Opening 101g Rib 101h Inside of duct 102 Ozone filter 103 Light source 104 Light reflecting member 105 Light absorbing member 106 Heat absorber 107 Document width region 108 Document outside area 111 Communication duct 111a Through hole 111b End 130 Exterior 130a Exterior duct 140 Resistance applying means 150 Blade 200 Discharge space 201, 202 Flange 201a of photoreceptor Flange shaft 201b Circumference 201c Rim 202a Gear 203 Air gap 204 Insulating holders 204a, 207a, 207b Opening 205 Discharge wire 300 Cover 301 Reflecting member 303 Sealing member 310 Light intensity distribution 310a, 310b Emission wavelength region 311 Light transmittance 311a, 311b, 311c Light transmitted wave Cover band 312 ozone resolution curve 320 reflecting member 330 lamp unit 331 mirror unit 332 unit support base 333 driving the wire 334 pulley

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) G03G 21/00 370-540 G03G 15/04-15/04 120

Claims (1)

(57) Claims: 1. A photoconductor, a corona discharger contributing to image formation of the photoconductor, a fluorescent lamp contributing to image formation of the photoconductor, and a corona discharger. A duct means for passing air containing the ozone to collect the generated ozone, wherein a fluorescent substance is applied to an inner tube wall of the fluorescent lamp in one of the fluorescent lamps; Ultraviolet light generated between the electrodes of the lamp shines, and a white light emitting region that emits white light that contributes to image formation on the light emitting surface, and a fluorescent substance is not applied to an inner tube wall of the fluorescent lamp. irradiated ultraviolet arising from between the electrodes directly, and ultraviolet radiation range for decomposing ozone in said duct means to form, the ultraviolet radiation range, depending on the imaging corresponding length of the fluorescent lamp
The trajectory of the ultraviolet radiation region is provided in a length region outside the defined region,
Be parallel and transparent on the surface of the duct means facing the ultraviolet radiation area
A member is provided, and while the fluorescent lamp is moving, the ultraviolet light is constantly
Inside, it becomes the positional relationship irradiated through the transparent member
Image forming apparatus characterized by the the like.