JPH08297375A - Synthetic resin film for color copying - Google Patents

Abstract

PURPOSE: To constantly obtain a bright color copy image by applying an antistatic agent to specifying the range of electric resistances of the front and back surfaces of a synthetic resin film. CONSTITUTION: The antistatic agent 20, 30 is applied on the synthetic resin film for copying so that the electric resistance of the front surface 11 is smaller than that of the back surface 12 and the electric resistances of both front surface and back surface are in the range of 10<8> -10<12> Ω under a copying atmosphere of the temp. of 17-26 deg.C and the humidity of 30-60%. Further, a film compose of the synthetic resin film for copying, the front surface of which is coated with the antistatic agent and a silica fine particle and the back surface of which is coated with an adhesive material, and a synthetic resin film for a mount, the front surface of which is coated with a peeling agent for the adhesive material and the back surface of which is coated with the antistatic agent and the silica fine particle, is used. In such a case, the antistatic agent is also applied so that the electric resistance of the front surface of the synthetic resin film for copying is smaller than that of the back surface of the film for the mount and the electric resistances of both surfaces are in the range of 10<8> -10<12> Ω.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a synthetic resin film for color copying.

[0002]

2. Description of the Related Art Conventionally, the quality of a color copied print or image (hereinafter, simply referred to as an image) of a synthetic resin film for color copying depends on the temperature and humidity of the copying environment. That is, the synthetic resin film for color copying (hereinafter, including the synthetic resin film for copying which is overlaid with the synthetic resin film for the mount via the adhesive and the release material) is an insulating material on both the front surface and the back surface. Therefore, it was necessary to apply static electricity prevention material on the front and back sides to prevent the generation of static electricity due to friction in consideration of the running property of the color copying machine. Frequent occurrence of image distortion and the like. As a result of earnest research, the present inventor has found that when an antistatic material is applied to the front and back surfaces of an insulating synthetic resin film for color copying, the electric resistance value falls within a certain range under a specific temperature and a specific humidity. However, the present invention has been completed by finding that the above-mentioned drawbacks can be prevented by coating so that the electric resistance value of the front surface becomes lower than that of the back surface.

[0003]

That is, the present invention is
The present invention provides a synthetic resin film for color copying, which allows a clear color image to be obtained on the surface of a synthetic resin film whose front and back surfaces are made of an insulating material when color copying is performed.

[0004]

In order to achieve the above-mentioned object, the synthetic resin film for color copying of the present invention has a copying synthetic resin film 10 as shown in FIG. In 30% to 65%, the electric resistance value of the front surface 11 is smaller than that of the back surface 12, and
Also, the back surface 12 is coated with the static electricity preventing materials 20 and 30 so that the back surface 12 is in the range of 10 ⁸ to 10 ¹² ohms.

Further, the synthetic resin film for color copying of the present invention is, as shown in the figure, a synthetic resin film for copying in which a static electricity preventing material 20B and silica fine particles 21B are coated on the front surface 11B and an adhesive material 40B is coated on the rear surface 12B. 10B
And a mount synthetic resin film 50B having the surface 51B coated with the release material 60B of the adhesive 40B and the back surface 52B coated with the static electricity prevention material 30B and the silica fine particles 31B. ℃, humidity 30%
Up to 65%, the synthetic resin film 10B for copying
The electrical resistance value of the surface of the above-mentioned mount synthetic resin film 50
It is smaller than that on the back surface of B, and both the electric resistance value of the front surface of the copying synthetic resin film 10B and the electric resistance value of the back surface of the mount synthetic resin film 50B are both 10.
^The static electricity generation preventing materials 20B and 30B are arranged on the surface 11B of the copy synthetic resin film 10B and the mount synthetic resin film 50 so as to be in the range of ⁸ to 10 ¹² ohms.
The back surface 52B of B is applied.

In the present invention, all known materials for preventing static electricity can be used. The copying environment is indicated by temperature and humidity in the environment when the color copying synthetic resin film of the present invention is inserted into the color copying machine. Further, in the present invention, the silica fine particles applied to the surface of the copying synthetic resin film are mainly used for toner fixing, and are further applied to the back surface of the copying synthetic resin film or the mount synthetic resin film. The main purpose of silica fine particles is to prevent double feeding. When silica fine particles are attached to the front surface or the back surface of the synthetic resin film, the insulating electric resistance value increases or decreases according to the increase or decrease of the addition amount, and it is necessary to increase the amount of the static electricity generation preventing material as compared with the case where the silica fine particles are not attached.

[0007]

Example 1 A copolymer of a quaternary ammonium salt and an acrylic monomer in 1 kg of isopropyl alcohol (a product name ELECOND manufactured by Soken Chemical Co., Ltd., product number PQ-5) was formed on the surface 11 of a polyester film 10 having a thickness of 30 μm.
The static electricity prevention material 20 containing 40 g of 0B) was applied. The back surface 12 of the polyester film 10 was coated with an antistatic material 30 containing 35 g of the copolymer in 1 kg of isopropyl alcohol to obtain a product of the present invention.

Regarding the product of the present invention, the copying environment, A (temperature 1
7 ° C, humidity 40%), B (temperature 22 ° C, humidity 35%),
The electrical resistance values at C (temperature 24 ° C, humidity 38%) and D (temperature 26 ° C, humidity 56%) and the color copying results are shown in the following table.

[0009]

[Table 1]

[0010]

[Comparative Example 1] 40 g of a quaternary ammonium salt / acrylic monomer copolymer (Product name ELECOND PQ-50B manufactured by Soken Chemical Co., Ltd.) was put in 1 kg of isopropyl alcohol on the surface of a 30-micron-thick polyester film to generate static electricity. The preventive material was applied. 1k of isopropyl alcohol on the back of the polyester film
This comparative product was obtained by applying an antistatic material containing 50 g of the above-mentioned copolymer to g.

Regarding this comparative product, the copying environment, A, B, C
The electrical resistance values and the color copying results for D and D are shown in the following table.

[0012]

[Table 2]

[0013]

Example 2 1 kg of isopropyl alcohol was applied to the surface 11B of a polyester film 10B having a thickness of 30 microns.
10g of silica 21B having a diameter of 3 to 7 microns is mixed in, and a polyester resin is mixed to adjust the viscosity to 800 cps and coated, and 1 kg of isopropyl alcohol is a copolymer of a quaternary ammonium salt and an acrylic monomer (Soken Chemical Co., Ltd. (Product name ELECOND part number PQ-10B)
40 g of the static electricity generation preventing material 20B was applied. On the back surface 12B of the polyester film 10B, an adhesive material 40B (product number DF8320 manufactured by Toyo Ink Co., Ltd.) was mixed with ethyl acetate to give a solid content of about 40% and a viscosity of about 4000.
The coating was adjusted to cps. Next, the silicon material 60B is applied to the front surface 51B of the polyester film 50B having a thickness of 75 microns to a thickness of about 1 micron, and the back surface 52B is coated with 1 kg of isopropyl alcohol to have a diameter of 3 to 3.
Add 300 g of 7 micron silica 31B, mix with a polyester resin to adjust the viscosity to 800 cps, and coat with 6 kg of the above copolymer in 1 kg of isopropyl alcohol.
0 g of the static electricity preventing material 30B was applied to obtain a product of the present invention.

Regarding the product of the present invention, the copying environment, A, B, C
The electrical resistance values and the color copying results for D and D are shown in the following table.

[0015]

[Table 3]

[0016]

[Comparative Example 2] 1 kg of isopropyl alcohol has a diameter of 3 to 7 on the surface of a polyester film having a thickness of 30 microns.
After adding 10 g of micron silica and mixing polyester resin to adjust the viscosity to 800 cps and applying,
A static electricity preventive material containing 40 g of a copolymer of a quaternary ammonium salt and an acrylic monomer (trade name ELECOND product number PQ-50B manufactured by Soken Chemical Co., Ltd.) in 1 kg of isopropyl alcohol was applied. Adhesive (Toyo Ink Co., Ltd. product number DF8
320) was mixed with ethyl acetate, and the solid content was adjusted to about 40% and the viscosity was adjusted to about 4000 cps, and the mixture was applied. The surface of a 75-micron-thick polyester film is coated with a silicon material to a thickness of about 1 micron, and the back surface is coated with 1 kg of isopropyl alcohol and silica having a diameter of 3-7 microns.
Add 0g and mix the polyester resin to increase the viscosity to 80.
Adjust to 0 cps and apply, isopropyl alcohol 1
This comparative product was obtained by applying an antistatic material containing 50 g of the above copolymer in kg.

About this comparative product, the copying environment, A, B, C
The electrical resistance values and the color copying results for D and D are shown in the following table.

[0018]

[Table 4]

[0019]

As described above, according to the present invention, the antistatic material is provided so that the electric resistance values of the front and back surfaces of the color copying synthetic resin film inserted in the color copying machine are within a certain range. If applied, the sharpness of the color copy image can always be expected.

[Brief description of drawings]

FIG. 1 is an enlarged sectional view showing an embodiment of the present invention.

FIG. 2 is an enlarged sectional view showing another embodiment of the present invention.

[Description of sign]

 10,10B Synthetic resin film for copying 11,11B Synthetic resin film for copying 12,12B Synthetic resin film for copying Back side 20,20B, 30,30B Antistatic material 21B, 31B Silica fine particle 40B Adhesive 50B Synthetic resin for mount Film 60B Silicon material

Claims (2)

[Claims] 1. A synthetic resin film for copying has a smaller electric resistance value than the back surface and a surface resistance value of 10 ⁸ to 10 ⁸ in a copying environment of a temperature of 17 ° C. to 26 ° C. and a humidity of 30% to 65%. ^A synthetic resin film for color copying, which is coated with an antistatic material so that it is within the range of ¹² ohms. 2. A synthetic resin film for copying in which an antistatic material and silica fine particles are applied to the front surface and an adhesive material is applied to the back surface, and a release material for the adhesive material is applied to the front surface, and an antistatic material is applied to the back surface. And a synthetic resin film for mount coated with silica fine particles, and the copy environment has a temperature of 17 ° C to 26 ° C.
The electrical resistance of the surface of the synthetic resin film for copying is smaller than that of the back surface of the synthetic resin film for mount, and the electrical resistance of the surface of the synthetic resin film for copying at a temperature of 30% to 65%. The value and the electric resistance value of the back surface of the synthetic resin film for the mount are both 10 ⁸ to 10 ¹²
A synthetic resin film for color copying, characterized in that the antistatic material is applied to the front surface of the synthetic resin film for copying and the back surface of the synthetic resin film for mount so as to be within the range of ohms.