US3335423A - Medium for treating information - Google Patents
Medium for treating information Download PDFInfo
- Publication number
- US3335423A US3335423A US442263A US44226365A US3335423A US 3335423 A US3335423 A US 3335423A US 442263 A US442263 A US 442263A US 44226365 A US44226365 A US 44226365A US 3335423 A US3335423 A US 3335423A
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- United States
- Prior art keywords
- medium
- electrode
- treating
- synthetic film
- layer
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- 239000003792 electrolyte Substances 0.000 claims description 4
- 239000010410 layer Substances 0.000 description 27
- 239000000126 substance Substances 0.000 description 8
- -1 polyethylene Polymers 0.000 description 5
- 239000004020 conductor Substances 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 229920002223 polystyrene Polymers 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 229920000298 Cellophane Polymers 0.000 description 1
- 241000047703 Nonion Species 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004924 electrostatic deposition Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- PCCVSPMFGIFTHU-UHFFFAOYSA-N tetracyanoquinodimethane Chemical compound N#CC(C#N)=C1C=CC(=C(C#N)C#N)C=C1 PCCVSPMFGIFTHU-UHFFFAOYSA-N 0.000 description 1
- 230000004304 visual acuity Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C11/00—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
- G11C11/21—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements
- G11C11/24—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using capacitors
Definitions
- This invention relates to recording media for treating information wherein the same means as such punched tapes are electrically given at high speeds by using an electrostatically recording means and more particularly to treating media made of a transparent synthetic film.
- An object of the present invention is to provide a treating medium made of a transparent synthetic film to eliminate the above mentioned defect.
- Another object of the present invention is to provide a method of eliminating the disturbance of information in the case of using a transparent synthetic film.
- the elctrostatic recording according to the present invention is to give an electric charge from a penningshaped electrode directly to the surface of a synthetic film which is different from any conventional photoconductive substance.
- an electric charge giving substance is deposited to be about 100a thick on a base so that electrostatic deposition may be easy.
- the present invention is to provide a cheap treating medium in which the above mentioned defect of high molecular structures or specifically of synthetic films are properly and effectively eliminated.
- FIGURE 1 is an explanatory view of a charging mechanism of a conventional simple synthetic film.
- FIGURE 2 is an explanatory view of a charging mechanism according to the present invention.
- FIGURE 1 shows a charging mechanism of a conventional medium
- FIGURE 2 shows a charging mechanism of a medium according to the present invention
- 1 is an electrode to apply an electric charge and connected to the positive or negative high voltage power source 5 through an electric conductor.
- the other electrode of the high voltage power source 5 is connected to an electrode 4 set opposite the electrode 1 also through an electric conductor so as to be easily controlled with an electric switching circuit.
- 2 is a treating medium formed of a synthetic film in the form of a single layer coated on the surface with such electrolyte as, for example, sodium carbonate or mixed within with a surface activator specifically containing a nonion series substance.
- Said treating medium is of a high molecular structure of a high property of electrification and is made of an electrostatic insulator having a property of keeping an electrostatic charge. Therefore, as in FIGURE 1, there is usually a slight air layer 3 between the treating medium 2 and the electrode 4.
- FIGURE 2 is an explanatory view of a charging mechanism in which is used a treating medium according to the present invention.
- 6 is a charging electrode and 7 is such transparent synthetic film of a high molecular structure of a specific resistivity of less than 10 ohm-centimeters as, for example, a synthetic film composed mostly of polyethylene or such simple substance as polypropylene or polystyrol treated on the recording surface with the above mentioned film.
- 8 is an electrostatic conductor of such transparent substance of a volume specific resistance of less than from 10 to approximately 10 ohm-centimeters as, for example, polyarylmethane, its mixture or 7-7-8-8 tetracyanoquinodimethane (T.C.N.Q.).
- a recording medium having three layers is shown as an embodyment in the above. However, it is needless to say that any other various combinations are possible. By merely applying an antistatic paint, its effect can be expected to some extent. In case a solvent or heat is to be used in fixing, a combination adapted to it can be easily formed. Further, as the medium of the present invention is formed without making any intermediate air layer between any of the three layers 7, 8 and 9, its resistance is so low that, as the second medium layer 8, the third medium layer 9 and the electrode plate 10 are of the same potential, no electrostatic action will occur at all in any minute space. That is to say, even if the third layer 9 and the metallic electrode 10 are separated from each other, an electrostatic latent image made by an air corona on the transparent synthetic film 7 will not be disturbed.
- the present invention not only the defects in recording on a simple substance can be easily eliminated but also there is substantially no need of cares of the disturbance of an electric charge caused by the variation of the distance in recording.
- a medium adapted to be used for information treating apparatus can be obtained without impairing the transparency.
- a very clear information treatment high in S/N can be obtained cheaply at a high speed.
- an information treating medium of a good contrast can be obtained.
- a medium for treating information adapted to be disposed between a charging electrode and a further electrode comprising in combination: a high molecular synthetic film layer incorporating an electrolyte charge receptive recording surface disposed adjacent the charging elec trode; an electrostatic conductive layer supporting said synthetic film layer and characterized by a specific resistivity of less than 10 and a conductive layer of lower volume specific resistivity than said electrostatic conductive layer supporting said last mentioned layer adjacent to said further electrode.
- a medium for handling information adapted to be disposed between a charging electrode and a further electrode comprising in combination: a high molecular synthetic film layer comprised principally of a material, selected from the group comprising polyethylene, polypropylene, and polystyrol, having a surface coating of an electrolyte; an electrostatic conductive layer underlying the synthetic film layer; and a conductive layer underlying said electrostatic conductive layer and disposed adjacent to said further electrode; said layers being characterized by decreasing specific resistivity from the film layer to the conductive layer.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Hardware Design (AREA)
- Photoreceptors In Electrophotography (AREA)
Description
8, 1967 NOBORU MASUDA 3,335,423
MEDIUM FOR TREATING INFORMATION Filed March 24, 1965 United States Patent Ofilice 3,335,423 MEDIUM FOR TREATING INFORMATION Noboru Masuda, Ota-ku, Tokyo-to, Japan, assignor to Denki-Onkyo Kabushiki Kaisha, Ota-ku, Tokyo-t0,
Japan Filed Mar. 24, 1965, Ser. No. 442,263 3 Claims. (Cl. 346-135) Punched tapes or punched cards have been mostly used as intermediate memory elements.
This invention relates to recording media for treating information wherein the same means as such punched tapes are electrically given at high speeds by using an electrostatically recording means and more particularly to treating media made of a transparent synthetic film.
There is already a system of electrostatically depositing toners by using paper for a supporting medium. However, as a reflected light is used therein, no information treatment high in S/N has been possible.
An object of the present invention is to provide a treating medium made of a transparent synthetic film to eliminate the above mentioned defect.
Another object of the present invention is to provide a method of eliminating the disturbance of information in the case of using a transparent synthetic film.
The elctrostatic recording according to the present invention is to give an electric charge from a penningshaped electrode directly to the surface of a synthetic film which is different from any conventional photoconductive substance.
Further, in the present invention, as different from the system of using paper coated with polyethylene, an electric charge giving substance is deposited to be about 100a thick on a base so that electrostatic deposition may be easy.
The present invention is to provide a cheap treating medium in which the above mentioned defect of high molecular structures or specifically of synthetic films are properly and effectively eliminated.
FIGURE 1 is an explanatory view of a charging mechanism of a conventional simple synthetic film.
FIGURE 2 is an explanatory view of a charging mechanism according to the present invention.
An embodiment of the present invention shall be explained in detail with reference to FIGURES 1 and 2 in the following.
FIGURE 1 shows a charging mechanism of a conventional medium and FIGURE 2 shows a charging mechanism of a medium according to the present invention. 1 is an electrode to apply an electric charge and connected to the positive or negative high voltage power source 5 through an electric conductor. The other electrode of the high voltage power source 5 is connected to an electrode 4 set opposite the electrode 1 also through an electric conductor so as to be easily controlled with an electric switching circuit. 2 is a treating medium formed of a synthetic film in the form of a single layer coated on the surface with such electrolyte as, for example, sodium carbonate or mixed within with a surface activator specifically containing a nonion series substance.
The charging mechanism in the treating medium in the form of a single layer in FIGURE 1 shall now be explained.
Said treating medium is of a high molecular structure of a high property of electrification and is made of an electrostatic insulator having a property of keeping an electrostatic charge. Therefore, as in FIGURE 1, there is usually a slight air layer 3 between the treating medium 2 and the electrode 4.
3,335,423 Patented Aug. 8, 1967 It is well known that the electrostatic capacity is repre sented by the formulas From the Formulas 1 and 2,
wherein As the area S is in contact with the surface of the medium in some places but is enclosed with the insulator, even if the vicinity of S is in contact with the electrode plate 4, they will be individually insulated. That is to say, when the medium is removed from the electrode plate and is developed without neutralizing an electrostatic latent image, d in the Formula 3 will become an infinity and, as K is constant, the voltage will also become an infinity. That is to say, where there is such minute air layer, a kind of destruction of insulation will be caused by removing the medium.
There is another method wherein an apparent electric charge is neutralized by depositing a toner. However, in the present invention, the medium and electrode are made integral and any air gap between the medium and the back electrode plate is eliminated so that the record may be good.
FIGURE 2 is an explanatory view of a charging mechanism in which is used a treating medium according to the present invention. In the drawing, 6 is a charging electrode and 7 is such transparent synthetic film of a high molecular structure of a specific resistivity of less than 10 ohm-centimeters as, for example, a synthetic film composed mostly of polyethylene or such simple substance as polypropylene or polystyrol treated on the recording surface with the above mentioned film. 8 is an electrostatic conductor of such transparent substance of a volume specific resistance of less than from 10 to approximately 10 ohm-centimeters as, for example, polyarylmethane, its mixture or 7-7-8-8 tetracyanoquinodimethane (T.C.N.Q.). 9 is a conductor of a very low volume specific resistance of from approximately 10 to 10 centimeters made of such transparent substance as, for example, cellophane, or polyvinyl alcohol. A recording medium having three layers is shown as an embodyment in the above. However, it is needless to say that any other various combinations are possible. By merely applying an antistatic paint, its effect can be expected to some extent. In case a solvent or heat is to be used in fixing, a combination adapted to it can be easily formed. Further, as the medium of the present invention is formed without making any intermediate air layer between any of the three layers 7, 8 and 9, its resistance is so low that, as the second medium layer 8, the third medium layer 9 and the electrode plate 10 are of the same potential, no electrostatic action will occur at all in any minute space. That is to say, even if the third layer 9 and the metallic electrode 10 are separated from each other, an electrostatic latent image made by an air corona on the transparent synthetic film 7 will not be disturbed.
In the present invention, not only the defects in recording on a simple substance can be easily eliminated but also there is substantially no need of cares of the disturbance of an electric charge caused by the variation of the distance in recording. By using such substance as is shown in the embodiment, a medium adapted to be used for information treating apparatus can be obtained without impairing the transparency. Further, in the present invention, by forming the medium in two, three or more layers, without reducing the resolving power, a very clear information treatment high in S/N can be obtained cheaply at a high speed. By inserting a nontransparent layer between, an information treating medium of a good contrast can be obtained.
What is claimed is: t
1. A medium for treating information adapted to be disposed between a charging electrode and a further electrode comprising in combination: a high molecular synthetic film layer incorporating an electrolyte charge receptive recording surface disposed adjacent the charging elec trode; an electrostatic conductive layer supporting said synthetic film layer and characterized by a specific resistivity of less than 10 and a conductive layer of lower volume specific resistivity than said electrostatic conductive layer supporting said last mentioned layer adjacent to said further electrode.
2. A medium for handling information adapted to be disposed between a charging electrode and a further electrode comprising in combination: a high molecular synthetic film layer comprised principally of a material, selected from the group comprising polyethylene, polypropylene, and polystyrol, having a surface coating of an electrolyte; an electrostatic conductive layer underlying the synthetic film layer; and a conductive layer underlying said electrostatic conductive layer and disposed adjacent to said further electrode; said layers being characterized by decreasing specific resistivity from the film layer to the conductive layer.
3. The medium of claim 1 wherein said layers are fixed together without any intermediate air layers to minimize the resistance of said layers from said charging electrode to said further electrode.
References Cited UNITED STATES PATENTS 3,063,872 11/1962 Boldebuck 117211 3,138,547 6/1964 Clark 204-2 3,213,429 10/ 1965 Schwertz 340-173 RICHARD B. WILKINSON, Primary Examiner.
I. W. HARTARY, Assistant Examiner.
Claims (1)
1. A MEDIUM FOR TREATING INFORMATION ADAPTED TO BE DISPOSED BETWEEN A CHARGING ELECTRODE AND A FURTHER ELECTRODE COMPRISING IN COMBINATION: A HIGH MOLECULAR SYNTHETIC FILM LAYER INCORPORATING AN ELECTROLYTE CHARGE RECEPTIVE RECORDING SURFACE DISPOSED ADJACENT THE CHARGING ELECTRODE; AN ELECTROSTATIC CONDUCTIVE LAYER SUPPORTING SAID SYNTHETIC FILM LAYER AND CHARACTERIZED BY A SPECIFIC RESIS-
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US442263A US3335423A (en) | 1965-03-24 | 1965-03-24 | Medium for treating information |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US442263A US3335423A (en) | 1965-03-24 | 1965-03-24 | Medium for treating information |
Publications (1)
Publication Number | Publication Date |
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US3335423A true US3335423A (en) | 1967-08-08 |
Family
ID=23756154
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US442263A Expired - Lifetime US3335423A (en) | 1965-03-24 | 1965-03-24 | Medium for treating information |
Country Status (1)
Country | Link |
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US (1) | US3335423A (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3063872A (en) * | 1960-02-15 | 1962-11-13 | Gen Electric | Recording medium and polysiloxane and resin mixture therefor |
US3138547A (en) * | 1959-10-23 | 1964-06-23 | Minnesota Mining & Mfg | Electrosensitive recording sheets |
US3213429A (en) * | 1963-05-24 | 1965-10-19 | Xerox Corp | High speed information recorder |
-
1965
- 1965-03-24 US US442263A patent/US3335423A/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3138547A (en) * | 1959-10-23 | 1964-06-23 | Minnesota Mining & Mfg | Electrosensitive recording sheets |
US3063872A (en) * | 1960-02-15 | 1962-11-13 | Gen Electric | Recording medium and polysiloxane and resin mixture therefor |
US3213429A (en) * | 1963-05-24 | 1965-10-19 | Xerox Corp | High speed information recorder |
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