JPH0750780Y2 - Ozone exhaust / heat exhaust device for electronic copiers - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an ozone exhaust / heat exhaust device for exhausting ozone and heat generated in an electronic copying machine to the outside.

[Conventional technology]

In conventional electronic copying machines, there was no exhaust duct near the photoconductor.

[Problems to be solved by the device]

Ozone remains around the photoconductor, causing photodegradation of the photoconductor, and because ozone exhaust force from the vicinity of the photoconductor is weak, ozone does not pass through the ozone decomposition filter and leaks to the outside of the body, causing odors to the human body. It had a bad effect. Further, since the outside cool air did not flow well around the photoconductor, the surface temperature of the photoconductor increased. Further, the heat of the fixing device also gets around the photoconductor and causes a rise in temperature of the photoconductor, and dew condensation due to moisture contained in the paper in the fixing device also causes water droplets to stain the copy or the fixing device. I deteriorated the parts.

[Means and Actions for Solving the Problems]

The present invention has been made in view of the above, and it is possible to prevent ozone from remaining around the photosensitive member, prevent deterioration of the photosensitive material of the photosensitive member, and prevent ozone from leaking out of the main body without being decomposed. Is prevented, and the cool air flows well around the photoconductor to prevent the surface temperature of the photoconductor from rising.
Further, the heat of the fixing device does not circulate around the photoconductor, and it is intended to provide an ozone exhaust / exhaust heat device in an electronic copying machine capable of preventing dew condensation. An electronic copying machine having a photoconductor and a charger, a transfer / static elimination device, and a fixing device arranged as process means around the photoconductor, and having an upper frame openable and closable with respect to a lower frame, The upper and lower frames are provided with duct constituent members each having an intake port on the upstream side, which is open to face the space between the fixing device and the photoconductor, the charger, the transfer / static elimination device, and the fixing device. , The duct constituent members provided on the upper frame and the downstream end portions of the duct constituent members provided on the lower frame are brought into contact with each other when the upper and lower frames are closed. More, and configured to be connected to each other,
An exhaust fan whose downstream side communicates with an exhaust port is provided on the downstream side of one of the above duct constituent members, and an ozone decomposing filter is provided on the upstream side of this exhaust fan and at a position where the entire amount of sucked air passes. It has a structure that
At the time of copying operation with the lower frame closed, the exhaust fan is driven, and the air around the space between the fixing device and the photoconductor, the charger, the transfer / electrification device, and the fixing device is a duct structure with upper and lower sides. It is sucked from the intake port of the member and exhausted from each duct through the ozone decomposition filter.

〔Example〕

 An embodiment of the present invention will be described with reference to the drawings.

FIG. 5 shows an electronic copying machine embodying the present invention. In the figure, 1 is a lower frame, 2 is an upper frame, and the upper frame 2 is opened and closed by a hinge 3 relative to the lower frame 1. It is possible. Reference numeral 4 denotes a lower duct provided in the lower frame 1, 5 denotes an upper duct provided in the upper frame 2, which face each other with flanges 4a and 5a, respectively, and when both frames 1 and 2 are closed, As shown in FIG. 3, both flanges 4a, 5a are in contact with each other so that both ducts 4, 5 are connected. An exhaust fan 6 is attached to the lower duct 4. The outlet side of the exhaust fan 6 faces the exhaust port 7 provided on the side surface of the lower frame 1. An ozone filter 8 is provided on the intake side of the exhaust fan 6 so that the entire amount of air sucked by the exhaust fan 6 passes through the ozone decomposition filter 8.

As shown in FIGS. 1 and 2, the lower duct 1 has a transfer system ozone intake port 10 facing the transfer / static elimination device 9 and an electric device heat generating intake port 11 facing an electric device such as a motor. ing.

As shown in FIGS. 1 and 4, the upper duct 2 includes a charger 12
To the charging device ozone inlet 13, a first exhaust heat inlet 15 opening above the fixing device 14, a fixing device 14 and a photoconductor 16
And a second exhaust heat intake port 17 that opens between and.

In the figure, 18 is a developing device, 19 is a paper feeding device, 20 is a cleaning device, 21 is a transport, and 22 is an electric device such as a motor.

In the above configuration, by driving the exhaust fan 6, the air in the main body is sucked from the intake ports of the lower duct 4 and the upper duct 5 as shown in FIG.

That is, in the lower duct 4, ozone generated in the transfer / electrification device 9 from the transfer system ozone intake port 10 and air around the photoconductor 16 are further sucked in air around the developing device 17 and the paper feeding device 18. . Also, from the electric device heat generation inlet 11 to the electric device
The air around 21 is sucked.

On the other hand, in the upper duct 5, ozone generated in the charger 12 from the charger ozone inlet 13 and air around the photoconductor are sucked, and the first and second exhaust heat inlets 15 and 17 of the fixing device 14 are discharged. The ambient air and the air around the cleaning device 19 and the transport 20 are sucked.

Before the suction air passes through the exhaust fan 6, the entire amount of the suction air passes through the ozone decomposing filter 8 and the ozone contained in the suction air is decomposed.

[Effect of device]

According to the present invention, ozone does not remain around the photosensitive member, deterioration of the photosensitive material of the photosensitive member 16 can be prevented, and ozone can be prevented from leaking out of the main body without being decomposed. . Further, since the air around the photoconductor 16 is sucked, cold air from the outside flows well around the photoconductor 16 and the surface temperature of the photoconductor 16 can be prevented from rising. Further, the heat of the fixing device 14 does not permeate around the photoconductor 16 so that the fixing device 14 does not adversely affect the photoconductor 16, and the air around the fixing device 14 is satisfactorily taken in, Condensation is prevented from being generated in this portion, and copy contamination due to water droplets can be prevented.

In particular, according to the present invention, the air around each operation mechanism portion such as a charger, a transfer / static eliminator, and a fixing device arranged around a photoconductor of an electronic copying machine has an intake air opening facing them. Since the air is sucked by the duct constituent member having the mouth and the unnecessary air is not sucked from the other portions than the air inlet, the air around each of the operation mechanism portions can be sucked very efficiently. it can.

Further, the upper and lower duct constituent members are provided on the upper and lower frames which can be opened and closed, and these downstream side end portions are connected to each other by abutting each other when the upper and lower frames are closed. With this configuration, the upper and lower duct constituent members that are separated from each other in the upper and lower directions can be formed as an integral air passage during the transfer operation in which the upper and lower frames are closed without providing a special joining structure. Therefore, it is possible to simplify the structure of the joint portion of the duct constituent members divided into the upper and lower parts.

[Brief description of drawings]

The drawings show an embodiment of the present invention. FIG. 1 is a sectional view showing the entire ozone exhaust / exhaust heat duct, FIG. 2 is a plan view of the lower duct, and FIG. 3 is a sectional view showing the exhaust fan section. , 4th
FIG. 5 is a plan view of the upper duct, and FIG. 5 is a partially cutaway side view showing the open state of the copying machine. 6 is an exhaust fan, 8 is an ozone decomposition filter, and 9 is a transfer /
A static eliminator, 12 is a charger, 14 is a fixing device, 15 and 17 are exhaust heat intake ports, and 16 is a photoconductor.

Claims (1)

[Scope of utility model registration request] 1. An electron having a photoconductor and a charger, a transfer / static elimination device, and a fixing device arranged as process means around the photoconductor, and an upper frame of which can be opened and closed relative to a lower frame. In a copying machine, a duct having, in the upper and lower frames, an intake port on the upstream side, which is opened to face the space between the fixing device and the photoconductor, the charger, the transfer / static elimination device, and the fixing device. By providing each of the constituent members, the duct constituent member provided on the upper frame and the downstream end portions of the duct constituent members provided on the lower frame are brought into contact with each other when the upper and lower frames are closed. , An exhaust fan whose downstream side communicates with an exhaust port is provided at the downstream side of one of the above duct constituent members, and the suction fan is provided at the upstream side of this exhaust fan. Ozone exhaust-heat apparatus in an electronic copier which total amount, characterized in that disposed ozonolysis filter at a position through which the.