JPS63195668A - Electrophotographic recording device - Google Patents

Abstract

PURPOSE:To reduce ozone concentration to necessary concentration without spoiling the ability of a fan by providing a means capable of mounting a container which contains an ozonolysis agent in a volatilization state so that its rest can be viewed nearby an exhaust port. CONSTITUTION:A holder 21 where the ozonolysis agent container 20 can be mounted is fixed below the exhaust part 12 in the external surface of a housing. The ozonolysis agent container 20 is made of transparent plastic and contains the volatile ozonolysis agent 22, which is volatilized from the hole of a lid and mixed with exhaust air discharged from the exhaust port 12. Further, the holder 21 is so shaped as to hold both-end and bottom parts of the ozonolysis agent container 20, and the amount in the ozonolysis agent in the transparent container is easily viewed though the container. Consequently, discharged ozono is reduced below necessary concentration with the simple constitution and the environment in the chamber is maintained excellent.

Description

TECHNICAL FIELD The present invention relates to an electrophotographic recording apparatus having a corona discharger and a fan for discharging air inside the apparatus to the outside of the apparatus.

BACKGROUND ART Electrophotographic recording devices such as electrophotographic copying machines, laser printers, and facsimile machines use a charging charger to charge a photoconductor and a transfer charger to transfer a toner image formed on the photoconductor to transfer paper. , a separation charger for separating the transferred transfer paper from the photoconductor, and a static elimination charger for eliminating the charge on the photoconductor generally use a corona print IE.
utensils are used.

Corona dischargers generate ozone during corona discharge, but
Ozone is harmful to the human body when it exceeds a certain concentration, so it is usually
An ozone removal means is provided at the cooling air outlet of the recording device, so that ozone is generated from a corona discharger, diffused into the air inside the machine, and then released to the outside of the machine when it reaches a safe limit. The above cooling air is supplied to the fixing unit installed in the recording device, Wig,
It is used to remove heat generated from heating elements such as lances, resistors, motors, and electromagnetic clutches, as well as remove ozone generated from corona dischargers, thereby eliminating adverse effects on image formation. As an ozone removal means provided at the cooling air outlet, the ozone removal ability will be improved if a filter is installed at the cooling air outlet and a filter with narrow ventilation holes is used to bring the air discharged from the outlet into contact with the working surface as much as possible. However, this creates resistance to air circulation, reduces the amount of cooling air inside the aircraft, lowers the cooling capacity, generates noise, or requires an increase in the capacity of the cooling fan.

Therefore, the 8th ozone removal filter has low ventilation resistance and a large contact area for the flowing air.
As shown by reference numeral 1 in the figure, a thin cylindrical shape is used in which carbon-impregnated cardboard tape is spirally wound and the outermost surface is fixed with adhesive tape. This ozone removal device is attached to a holder 3 fixed to the mouth, and the cabin air discharged from the fan 21 passes through the gap in the filter 1, during which time the ozone is adsorbed to the carbon impregnated in the paper and the ozone is removed. Figures 9 and 10 are a side sectional view and a perspective view of a laser printer with an ozone filter of this type installed and the upper and lower units opened.

Fan 2 is located at the back of the upper unit housing of the device.
ff, and the filter 2 has a holder 3 fixed inside it.
installed on. The reference numeral 4.5 in FIG. 9 is a charger for charging the photoreceptor 6 and a transfer charger for transferring the toner image formed on the photoreceptor 6 onto transfer paper. Occur.

As shown in Fig. 8, the holder 3 to which the ozone filter 1 is mounted is made of a thin elastic metal plate or plastic, and has a stopper part 7.8 for holding the filter 1 and a stopper part 7.8 that opens outward when the filter is attached or removed. An elastic arm 9 that allows the filter to pass through and holds the attached filter so that it does not fall off.
It is integrally formed with a protection plate 11 having a large number of ventilation holes 10.

Although the ozone filter with the above configuration has considerably improved the exhaust performance and ozone removal ability of the fan, the ozone concentration in the air discharged from the exhaust port of the equipment may not be reduced to the required value in some cases. be.

Furthermore, as an ozone removal means, a device has been proposed in which an ozone decomposing agent is supplied to the ozone zone in conjunction with the operation of a corona discharge device to decompose ozone and reduce the ozone concentration of the exhaust gas. The device and control mechanism for supplying the ozone decomposer in conjunction with the operation of the corona discharge device are complicated, and because the device is located inside the aircraft, it is difficult to know the remaining amount of the ozone decomposer. there were.

Purpose: In view of the above-mentioned shortcomings of conventional ozone removal means for electrophotographic recording devices, the present invention provides an ozone removal device that can reduce ozone concentration to a required level with a simple configuration and without inhibiting fan performance. The object of the present invention is to provide an electrophotographic recording device having the following features.

In order to achieve the above-mentioned object, the present invention provides an electrophotographic recording apparatus that includes a corona discharger, a blower for discharging interior air to the outside of the machine, and an exhaust port communicating with the discharge side thereof. The present invention is characterized in that a means is provided in the vicinity to which a container containing the ozone decomposer can be dissipated and its residue i can be visually recognized.

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

In the apparatus according to the embodiment of the present invention shown in FIGS. 1 and 2, a fan 2 for discharging the air inside the machine to the outside of the machine is provided inside the rear side of the equipment housing, and the fan 2 is disposed inside the rear side of the equipment housing, and the air is then exhausted to the housing. The point where the opening 12 is provided is shown in Section 8.9.1.
Although it is similar to the conventional apparatus explained with reference to FIG. 0, the apparatus of this embodiment is not provided with an ozone filter on either the intake side or the exhaust side of F/2. Instead, a holder 21 to which an ozone decomposer container 20 can be attached is fixed below the exhaust port 12 on the outer surface of the housing. As shown in Fig. 3, the ozone decomposer container 20 is made of transparent plastic, and after storing the volatile ozone decomposer 22 inside, it is covered with a lid 23 with many holes perforated therein. Seal 2
4, and when it is attached to the holder 21 and the seal 24 is completely peeled off, the volatilized ozone decomposer released from the hole in the lid 23 will be discharged from the exhaust port 12 as shown by the broken line arrow in FIG. It is becoming more mixed with the exhaust gas being emitted.

The holder 21 is shaped to hold both sides and the bottom of the ozone decomposer container 20, so that the amount of ozone decomposer inside can be easily seen through the transparent container.

The ozone decomposer 22 used in the apparatus of this invention is a jelly-like terpene compound. Terpene compounds are mainly used as fragrance ingredients, and among them, limonene, linalool, β-myrcene, α-terhineol, α-sapinene, etc. have a boiling point of 200%.
Those around C have particularly excellent ozone resolution.

Since this device is constructed as described above, the seal 24
The ozone decomposer in the ozone decomposer container 20, which has been removed and installed in the holder 21, volatilizes and emanates from the holes of the M2S, and comes into contact with the high temperature air inside the machine discharged from the exhaust port 12 during recording. Since this is an empty draw and the holder 21 holds the container only at the sides and bottom, the remaining amount of ozone decomposer 22 in the container can be easily checked, and the container can be replaced at the appropriate time. can do.

The ozone decomposer container holder is provided on the inner surface of the equipment housing as shown by the chain line 21' in FIG. It's okay. In this case, the housing may be provided with a transparent part so that the remaining amount can be seen from the outside.

Note that the reference numeral 30 in FIGS. 1 and 2 is a chassis that houses an interface port, a power supply, a controller, etc., and the heat generated inside the chassis is sucked by the fan 2 together with the heat generated from the fixing device 31. It is discharged outside the aircraft along with the air.

In another embodiment shown in FIG. 4, an eighth
An ozone filter 1 similar to that explained in the figure is removably attached.1. A transparent ozone decomposer container 2o is mounted below the exhaust port 12 of the housing and is supported by a holder 21 as in the above embodiment. Therefore, ozone in the exhaust gas is first removed to a certain extent by the ozone filter 1, and after being discharged from the exhaust port ↓2, it comes into contact with the ozone decomposer and is decomposed, so that the ozone concentration can be reduced to 7ζ below the required ozone concentration. Therefore, the ozone filter can reduce air resistance.

In addition, the ozone filter l was not only formed into a cylindrical shape by spirally winding corrugated carbon-impregnated paper, but also
As shown in FIG. 6, attachment to and removal from the holder 3 is facilitated by attaching a suitable knob 1a. Alternatively, the ozone filter 1 can be formed by laminating corrugated paper impregnated with cardboard in parallel and attaching a suitable knob 1a, as shown in FIG.

The carbon-impregnated corrugated paperboard is black and is not noticeable when installed in the recording apparatus, so the knob 1a can be colored in a conspicuous color to facilitate operation.

Effects As described above, according to the present invention, ozone discharged from an electrophotographic recording apparatus can be reduced to a required concentration or less with a simple configuration, and a good indoor environment can be maintained. In addition, the remaining ozone decomposing agent can be easily seen and replaced at the appropriate time.

[Brief explanation of the drawing]

FIG. 1 is a rear view of an embodiment of the present invention, FIG. 2 is a sectional view taken along line nn in FIG. Figure 4 is a sectional view of another embodiment; Figures S, 64 and 7 are perspective views showing an improved structure of the ozone filter; Figure 8 is an exploded perspective view showing a row of conventional ozone removal devices; Figure 9; The figure is a side sectional view of an example of a recording apparatus equipped with the ozone removal device, and FIG. 10 is a perspective view of the apparatus with the upper and lower units opened. 1...Ozone filter, 2...Blower, 4.5...
・Corona discharger, 12... Exhaust port, 20... Ozone decomposer container, 21... Container mounting means (holder), 22... Ozone decomposer Figure 4, Figure 71''2.1

Claims (1)

[Claims] In an electrophotographic recording device having a corona discharger, a blower for discharging air inside the machine to the outside of the machine, and an exhaust port communicating with the discharge side of the blower, an ozone decomposing agent can be emitted near the exhaust port, and , an electrophotographic recording device characterized in that it is provided with means for attaching a container containing the remaining amount so that the remaining amount thereof can be visually checked.