JPS60244326A - Ozone decomposition filter of electrophotographic copier - Google Patents

Abstract

PURPOSE:To enhance the ozone decomposition capacity of the ozone decomposition filter for electrophotographic copier, by holding a honeycomb, to which an ozone decomposition agent is applied, between surface plates having air passing apertures. CONSTITUTION:A honeycomb 1, to which an ozone decomposition agent is applied, is held between surface plates 2, 3 provided with a large number of air passing apertures 4 to form the ozone decomposition filter for an electrophotographic copier. Said surface plates 2, 3 are made of an Al plate. Each air passing apertures 4 is set to a relatively large diameter to one unit cross-sectional area of the honeycomb so as to generate no air passing resistance as possible. Because this filter is good in an air passing property, ozone generated in a copier main body is excluded rapidly with high efficiency by a blower. Therefore, the deterioration of a photosensitive body by ozone can be markedly lowered.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an ozone decomposition filter for electrophotographic copying machines.

In conventional electrophotographic copying machines, ozone is generated during the operation of charging or transfer corotrons and exposure lamps.
Since this may cause deterioration of the photosensitive material inside the copying machine and physiological disorders for the user of the copying machine, the inside of the copying machine should be vented while the copying machine is in use, and an ozone decomposition device should be installed inside the copying machine to decompose the generated ozone. The ozone concentration is on the order of o, ol ppm, which is not harmful to the human body, and is emitted from the copying machine together with the air. Ozone decomposition filters using foamed urethane foam or activated carbon are used in such ozone decomposition equipment, but in order to increase the decomposition efficiency, the density of the urethane foam must be increased, and as the density increases, This has the disadvantage that the ventilation resistance is very high,9 and therefore a large-capacity blower is required, resulting in high power consumption.

OBJECTS OF THE INVENTION An object of the present invention is to provide an ozone decomposition filter for electrophotographic copying machines that has low ventilation resistance and high ozone resolution.

Structure of the Invention The above object of the present invention is achieved by an ozone decomposition filter comprising a honeycomb core coated with an ozone decomposition agent and sandwiched between surface plates having ventilation holes.

Hereinafter, the present invention will be explained in more detail with reference to the drawings. 1st
The figure is a perspective view of the ozone decomposition filter of the present invention, in which a Nicum core (1) having the structure shown in Figure 2 is sandwiched between surface plates (2) and (3) provided with a large number of ventilation holes (4). ing. The surface plates (2, 6) are made of, for example, an aluminum plate, and the ventilation holes have a relatively large diameter with respect to the cross-sectional area of one unit of the honeycomb core, so as to cause no ventilation resistance as much as possible. There is. Honeycomb cores are formed by adhesively molding aluminum foil or paper as shown in Figure 2, and each unit core is coated or sprayed with an ozonolytic agent containing carzene powder and silver powder. It was strained,
When the ozone-containing atmosphere flows through the core, the ozone is decomposed and the atmosphere becomes harmless. The thickness of the honeycomb core is −g(T),
By appropriately selecting the width (W) and length (L), it is possible to make an ozone decomposition filter of any desired size. However, since the honeycomb core alone cannot maintain a constant shape, and a top plate (2
, 3) to form a sandwich structure as shown in FIG. 1, a robust filter can be obtained.

The ozone decomposition filter obtained in this way is attached to the air outlet inside the copying machine body, and the zolower (5
) sucks the ozone-containing air inside the copying machine and sends it to the filter (6). When the air passes through the ventilation holes in the filter's surface plate and passes through the honeycomb core, it comes into contact with the ozone decomposer on the core surface and releases ozone. is decomposed, and for example, the ozone concentration drops to 0.00000, which is harmless to the human body. It is discharged outside the machine with O2ppm or less.

Effects of the Invention Since the ozone decomposition filter of the present invention uses a honeycomb core, good ventilation is always maintained even when the number of cores per unit area is increased, achieving highly efficient ozone decomposition with low power consumption. be able to.

Furthermore, since the thickness T) of the honeycomb core can be freely selected, there is an advantage that the ozone decomposition efficiency can be easily selected by changing the thickness of the honeycomb core. Furthermore, since the ozone decomposition filter according to the present invention has good ventilation, the ozone generated inside the copying machine body is quickly and efficiently removed from the copying machine body by the blower, and therefore ozone deterioration of the photoreceptor is significantly reduced. effective.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing an ozone decomposition filter according to the present invention;
FIG. 2 is a diagram showing a honeycomb core, and FIG. 3 is a diagram showing how the ozone decomposition filter according to the present invention is used. Symbols in the figure = 1... ＼ Nikam Core, 2.6.
...Surface plate, 4...Ventilation holes, 5...
...Blower, 6...Filter. No. Ill #! 2R jl! 3m

Claims (1)

[Claims] An ozone decomposition filter for an electrophotographic copying machine, characterized in that a honeycomb core coated with an ozone decomposition agent is sandwiched between surface plates having ventilation holes.