US3392018A - Xerochemical development of electrostatic images - Google Patents
Xerochemical development of electrostatic images Download PDFInfo
- Publication number
- US3392018A US3392018A US272207A US27220763A US3392018A US 3392018 A US3392018 A US 3392018A US 272207 A US272207 A US 272207A US 27220763 A US27220763 A US 27220763A US 3392018 A US3392018 A US 3392018A
- Authority
- US
- United States
- Prior art keywords
- image
- developer
- electrostatic
- carrier liquid
- electromagnetic waves
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000007788 liquid Substances 0.000 claims description 36
- 238000000034 method Methods 0.000 claims description 27
- 239000000126 substance Substances 0.000 claims description 27
- 238000009877 rendering Methods 0.000 claims description 12
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 19
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 description 18
- 239000000243 solution Substances 0.000 description 16
- 239000003795 chemical substances by application Substances 0.000 description 10
- 229910000464 lead oxide Inorganic materials 0.000 description 9
- YEXPOXQUZXUXJW-UHFFFAOYSA-N oxolead Chemical compound [Pb]=O YEXPOXQUZXUXJW-UHFFFAOYSA-N 0.000 description 9
- 229910001961 silver nitrate Inorganic materials 0.000 description 9
- 239000011787 zinc oxide Substances 0.000 description 9
- VBWYZPGRKYRKNV-UHFFFAOYSA-N 3-propanoyl-1,3-benzoxazol-2-one Chemical compound C1=CC=C2OC(=O)N(C(=O)CC)C2=C1 VBWYZPGRKYRKNV-UHFFFAOYSA-N 0.000 description 7
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 6
- 239000006185 dispersion Substances 0.000 description 6
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 229910021505 gold(III) hydroxide Inorganic materials 0.000 description 5
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 4
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 3
- WMWLMWRWZQELOS-UHFFFAOYSA-N bismuth(III) oxide Inorganic materials O=[Bi]O[Bi]=O WMWLMWRWZQELOS-UHFFFAOYSA-N 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000011669 selenium Substances 0.000 description 3
- 229910052711 selenium Inorganic materials 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- HPGGPRDJHPYFRM-UHFFFAOYSA-J tin(iv) chloride Chemical compound Cl[Sn](Cl)(Cl)Cl HPGGPRDJHPYFRM-UHFFFAOYSA-J 0.000 description 3
- 229910052725 zinc Inorganic materials 0.000 description 3
- 239000011701 zinc Substances 0.000 description 3
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 2
- AJDIZQLSFPQPEY-UHFFFAOYSA-N 1,1,2-Trichlorotrifluoroethane Chemical compound FC(F)(Cl)C(F)(Cl)Cl AJDIZQLSFPQPEY-UHFFFAOYSA-N 0.000 description 1
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 1
- GGRJHBRRELWYMC-UHFFFAOYSA-N 1,4-dioxane;sulfuric acid Chemical compound OS(O)(=O)=O.C1COCCO1 GGRJHBRRELWYMC-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- CYTYCFOTNPOANT-UHFFFAOYSA-N Perchloroethylene Chemical group ClC(Cl)=C(Cl)Cl CYTYCFOTNPOANT-UHFFFAOYSA-N 0.000 description 1
- 229920000180 alkyd Polymers 0.000 description 1
- CJOBVZJTOIVNNF-UHFFFAOYSA-N cadmium sulfide Chemical compound [Cd]=S CJOBVZJTOIVNNF-UHFFFAOYSA-N 0.000 description 1
- 229910052980 cadmium sulfide Inorganic materials 0.000 description 1
- 230000002925 chemical effect Effects 0.000 description 1
- 238000001246 colloidal dispersion Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001652 electrophoretic deposition Methods 0.000 description 1
- 238000007786 electrostatic charging Methods 0.000 description 1
- 235000019441 ethanol Nutrition 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- DXZHSXGZOSIEBM-UHFFFAOYSA-M iodolead Chemical compound [Pb]I DXZHSXGZOSIEBM-UHFFFAOYSA-M 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G11/00—Selection of substances for use as fixing agents
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G13/00—Electrographic processes using a charge pattern
- G03G13/06—Developing
- G03G13/10—Developing using a liquid developer, e.g. liquid suspension
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G9/00—Developers
- G03G9/08—Developers with toner particles
- G03G9/12—Developers with toner particles in liquid developer mixtures
Definitions
- the methods of producing an electrostatic image on a surface are well known but generally comprise the use of a photoconductor medium embedded in an insulating base, the photoconductor medium being charged to give an overall potential on the surface and being then bled away image-wise by projecting a light image on to the surface, this electrostatic image being then capable of development by means of a toner powder or a liquid developer in accordance with the field existing at different parts of the image.
- the method of developing electrostatic images thus comprises producing an electrostatic latent image on a base containing a photoconductor with or without a further catalyzing agent, developing the said electrostatic latent image with a developer comprising a photochemical substance capable of being catalyzed by the base, and subsequently rendering the image visible and fixed by subjecting the deposited developer to electromagnetic waves.
- substances such as chloro-auric-acid or silver nitrate or copper sulphate or ferric chloride or lead oxide or bromo-platinic acid may be used as developers for zinc oxide and other photoconductive surfaces, the action being that the substances mentioned are deposited electrostatically on to a xerographic image and immediately after the image has been produced, and preferably while the deposited image is still wet, in the case of using a liquid developer, the image is subjected to electro-magnetic waves, preferably light, with the result that a chemical action takes place on the developer medium due to the catalyzing elfect of the photoconductor or other medium which results in a visible image being produced.
- a convenient method of operating is to use a photo-conductor medium such as zinc oxide as the catalyst or chemical reagent
- a substance which itself could form the catalyst or chemical reagent for the developer the same principle still applying in that a xerographic or electrostatic image is first produced which is then developed by xerographic methods and the image so produced is then subjected to conditions where a chemical reaction takes place in the developer to give a final visible and fixed image.
- a substance could be metallic zinc, platinum black or tin chloride.
- Example 1 In the first example of the invention there is first pre pared a sheet of paper, wood, plastic or metal which is coated with a photo-conductive electro-photographic material such as a dispersion of zinc oxide in resin according to the following composition:
- the coating may be applied by roller, by brush, spray, electrostatic methods, knife or doctor blade to the required backing, to give a thickness which may vary from 0.1 micron to microns provided that the thickness is uniform to 10 percent accuracy on the particular sheet.
- the sheet is then cured at F. for 8 hours to produce uniform electrical properties.
- This sheet is then charged by electrostatic charging devices to produce a uniform surface charge and subsequently exposed to an optical or X-ray image to produce a latent electrostatic image.
- the latent electrostatic image is developed thereafter by subjecting it to a developer made in the following way:
- Solution B.-Solution A is dispersed in cyclohexane according to the following proportions:
- the solution B or liquid developer is used to develop the latent electrostatic image by immersion or by roller application, the result being obtained by electrophoretic deposition.
- the resultant solid image is comprised of chloro-auric acid which is then exposed to light for example to the light emitted from a watt lamp at a distance of 12 inches for a period of one minute to darken the deposit by reducing it to gold, but in any case any exposure to light thereafter serves to darken the image or intensify it without impairment.
- Example 2 In another embodiment of the invention, the electrophotographic coating of Example 1 is used but the developer comprises for Solution A the following:
- Example 3 In another embodiment of the invention the electrophotographic coating of Example 1 is replaced by vacuum evaporated selenium of the vitreous variety and the developer of Example 1 or 2 may be used.
- Example 4 In another example of our invention, zinc oxide is replaced by the photoconductive form of bismuth trioxide in the formulation of the coating material and the developers of Example 1 or 2 may be used or alternatively the following developer may be used:
- Solution A Grams Bromo-platinic acid 3 Ethyl alcohol 100
- Solution B is made by dispersing Solution A to form a five percent dispersion in Freon 113 or perchloroethylene by volume.
- the image comprises metallic platinum.
- Example 5 In another example of our invention, the photoconductor zinc oxide is replaced by lead oxide, lead iodine,
- Solution A Grams Silver nitrate 5 Dioxane 100
- Solution B is made by dispersing Solution A to form a five percent dispersion in a solution of carbon tetrachloride in X4 solvent in the proportions 10 percent by volume.
- the final image comprises metallic silver.
- Example 6 In another example of our invention, the photoconductor is zinc oxide, and the developer is prepared as follows:
- Example 7 the developer paste of Example 6 is modified by adding 10 grams of zinc oxide powder to the ingredients of the paste prior to milling. The developer paste is then dispersed in Shellite in the proportion 1 part of paste to 100 parts of Shellite and this dispersion is used to develop an electrostatic image.
- the image deposit comprises silver nitrate and zinc oxide and resin which after removal from the dark room and exposure to strong light is converted to a dark colored image.
- the method of developing electrostatic images which comprises producing an electrostatic latent image on a base containing a photoconductor, developing the said electrostatic latent image with a developer comprising an electrical insulating carrier liquid and photochemical substance dispersed therein immiscible with the carrier liquid and of a polarity in the carrier liquid to be attracted to the latent electrostatic image and capable of being catalyzed by a substance in the base when activated by electmomagnetic waves, and subsequently rendering the image visible and fixed by subjecting the deposited developer to electromagnetic waves.
- the method of developing electrostatic images which comprises producing an electrostatic latent image on a base containing a photoconductor, developing the said electrostatic latent image with a developer comprising an electrical insulating carrier liquid and a photochemical substance dispersed therein immiscible with the carrier liquid and of a polarity in the carrier liquid to be attracted to the latent electrostatic image and capable of being catalyzed by the photoconductor in the base when activated by electromagnetic waves, and subsequently rendering the image visible and fixed by subjecting the deposited developer to electromagnetic waves.
- the method of developing electrostatic images which comprises producing an electrostatic latent image on a base containing a photoconductor and a catalyzing agent, developer comprising an electrical insulating carrier liquid and a photochemical substance dispersed therein immiscible with the carrier liquid and of a polarity in the carrier liquid to be attracted to the latent electrostatic image and capable of being catalyzed by the catalyzing agent in the base when activated by electromagnetic waves, capable of being catalyzed by the said catalysing agent, and subsequently rendering the image visible and fixed by subjecting the deposited developer to electromagnetic waves.
- the method of developing electrostatic images which comprises producing an electrostatic latent image on a base containing a photoconductor, developing the said electrostatic latent image with a developer comprising an electrical insulating carrier liquid and a photochemical substance dispersed therein immiscible with the carrier liquid and of a polarity in the carrier liquid to be attracted to the latent electrostatic image and capable of being catalyzed by a substance in the base when activated by electromagnetic waves, said photochemical substance being selected from the group consisting of chloro-auric-acid, silver nitrate, copper sulphate, ferric chloride, lead oxide and bromo-platinic acid, and subsequently rendering the image visible and fixed by subjecting the deposited developer to electromagnetic waves.
- the method of developing electrostatic images which comprises producing an electrostatic latent image on a base containing a photoconductor, developing the said electrostatic latent image with a developer comprising an electrical insulating carrier liquid and photochemical substance dispersed therein immiscible with the carrier liquid and of a polarity in the carrier liquid to be attracted to the latent electrostatic image and capable of being catalyzed by the photoconductor in the base when activated by electromagnetic waves, said photochemical substance being selected from the group consisting of chloroauric-acid, silver nitrate, copper sulphate, ferric chloride, lead oxide and bromo-platinic acid, and subsequently rendering the image visible and fixed by subjecting the deposited developer to electromagnetic waves.
- the method of developing electrostatic images which comprises producing an electrostatic latent image on a base containing a photoconductor and a catalyzing agent, developing the said electrostatic latent image with a developer comprising an electrical insulating carrier liquid and a photochemical substance dispersed therein immiscible with the carrier liquid and of a polarity in the carrier liquid to be attracted to the latent electrostatic image and capable of being catalyzed by the catalyzing agent in the base when activated by electromagnetic waves, said photochemical substance being selected from the group consisting of chloro-auric-acid, silver nitrate, copper sulphate, ferric chloride, lead oxide and bromo-platinic acid, and subsequently rendering the image visible and fixed by subjecting the deposited developer to electromagnetic Waves.
- the method of developing electrostatic images which comprises producing an electrostatic latent image on a base containing a photoconductor selected from the group consisting of zinc oxide, selenium, lead oxide, and bismuth trioxide, developing the said electrostatic latent image with a developer comprising an electrical insulating carrier liquid and a photochemical substance dispersed therein immiscible with the carrier liquid and of a polarity in the carrier liquid to be attracted to the latent electrostatic image and capable of being catalyzed by the photoconductor in the base when activated by electromagnetic waves, and subsequently rendering the image visible and fixed by subjecting the deposited developer to electromagnetic waves.
- a photoconductor selected from the group consisting of zinc oxide, selenium, lead oxide, and bismuth trioxide
- the method of developing electrostatic images which comprises producing an electrostatic latent image on a base containing a photoconductor selected from the group consisting of zinc oxide, selenium, lead oxide, and bismuth trioxide, developing the said electrostatic latent image with a developer comprising an electrical insulating carrier liquid and a photochemical substance dispersed therein immiscible with the carrier liquid and of a polarity in the carrier liquid to be attracted to the latent electrostatic image and capable of being catalyzed by the photoconductor in the base when activated by electromagnetic waves, said photochemical substance being selected from the group consisting of chloro-auric-acid, silver nitrate, copper sulphate, ferric chloride, lead oxide and bromoplatinic acid, and subsequently rendering the image visible and fixed by subjecting the deposited developer to electromagnetic Waves.
- a photoconductor selected from the group consisting of zinc oxide, selenium, lead oxide, and bismuth trioxide
- the method of developing electrostatic images which comprises producing an electrostatic latent image on a base containing a photoconductor and a catalyzing agent selected from the group consisting of metallic zinc, platinum black and tin chloride, developing the said electrostatic latent image with a developer comprising an electrical insulating carrier liquid and a photochemical substance dispersed therein immiscible with the carrier liquid and a polarity in the carrier liquid to be attracted to the latent electrostatic image and capable of being catalyzed by the catalyzing agent in the base when activated by electromagnetic waves, and subsequently rendering the image visible and fixed by subjecting the deposited developer to electromagnetic waves.
- a catalyzing agent selected from the group consisting of metallic zinc, platinum black and tin chloride
- the method of developing electrostatic images which comprises producing an electrostatic latent image on a base conaining a photoconductor and a catalyzing agent selected from the group consisting of metallic zinc, platinum black and tin chloride, developing the said electrostatic latent image with a developer comprising an electrical insulating carrier liquid and a photochemical substance dispersed therein immiscible with the carrier liquid and of a polarity in the carrier liquid to be attracted to the latent electrostatic image and capable of being catalyzed by the catalyzing agent in the base when activated by electromagnetic waves, said photochemical substance being selected from the group consisting of chloroauric-acid, silver nitrate, copper sulphate, lead oxide, and 'bromo-platinic acid, and subsequently rendering the image visible and fixed by subjecting the deposited developer to electromagnetic waves.
- a catalyzing agent selected from the group consisting of metallic zinc, platinum black and tin chloride
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Liquid Developers In Electrophotography (AREA)
- Developing Agents For Electrophotography (AREA)
- Photoreceptors In Electrophotography (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU16475/62A AU271159B2 (en) | 1963-04-08 | Chemical development of electrostatic images |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3392018A true US3392018A (en) | 1968-07-09 |
Family
ID=3706403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US272207A Expired - Lifetime US3392018A (en) | 1962-04-11 | 1963-04-11 | Xerochemical development of electrostatic images |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US3392018A (en(2012)) |
| DE (2) | DE1797581A1 (en(2012)) |
| NL (1) | NL291381A (en(2012)) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3477847A (en) * | 1965-07-16 | 1969-11-11 | Eastman Kodak Co | Process for autoelectrolytic reproduction of documents |
| US3793205A (en) * | 1963-07-11 | 1974-02-19 | Commw | Chargeless developer |
| US3804658A (en) * | 1964-07-09 | 1974-04-16 | K Metcalfe | Method of improving development of xerographic images |
| US3974769A (en) * | 1975-05-27 | 1976-08-17 | International Business Machines Corporation | Method and apparatus for recording information on a recording surface through the use of mists |
| US3986968A (en) * | 1974-02-01 | 1976-10-19 | Rank Xerox Ltd. | Milled and polar solvent extracted liquid developer |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4307168A (en) * | 1977-05-05 | 1981-12-22 | Eastman Kodak Company | Amplification of developed electrographic image patterns |
| DE102006052622A1 (de) | 2006-11-08 | 2008-05-15 | Braun Gmbh | Scherfolie für einen elektrischen Rasierapparat |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3052541A (en) * | 1959-01-14 | 1962-09-04 | Gen Aniline & Film Corp | Photographic reproduction process and apparatus therefor |
| US3068115A (en) * | 1961-02-06 | 1962-12-11 | Xerox Corp | Electrostatic emulsion development |
| US3072541A (en) * | 1958-10-17 | 1963-01-08 | Minnesota Mining & Mfg | Developer |
| US3083117A (en) * | 1957-06-14 | 1963-03-26 | Schmiedel Ulrich | Process of developing electrostatic images |
| US3142562A (en) * | 1959-12-03 | 1964-07-28 | Motorola Inc | System and method for making records |
| US3152903A (en) * | 1959-04-30 | 1964-10-13 | Minnesota Mining & Mfg | Reproduction system |
| US3231374A (en) * | 1960-09-02 | 1966-01-25 | Rca Corp | Methods for preparing etch resists using an electrostatic image developer composition |
-
0
- NL NL291381D patent/NL291381A/xx unknown
-
1963
- 1963-04-09 DE DE19631797581 patent/DE1797581A1/de active Pending
- 1963-04-09 DE DE19631472911 patent/DE1472911A1/de active Pending
- 1963-04-11 US US272207A patent/US3392018A/en not_active Expired - Lifetime
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3083117A (en) * | 1957-06-14 | 1963-03-26 | Schmiedel Ulrich | Process of developing electrostatic images |
| US3072541A (en) * | 1958-10-17 | 1963-01-08 | Minnesota Mining & Mfg | Developer |
| US3052541A (en) * | 1959-01-14 | 1962-09-04 | Gen Aniline & Film Corp | Photographic reproduction process and apparatus therefor |
| US3152903A (en) * | 1959-04-30 | 1964-10-13 | Minnesota Mining & Mfg | Reproduction system |
| US3142562A (en) * | 1959-12-03 | 1964-07-28 | Motorola Inc | System and method for making records |
| US3231374A (en) * | 1960-09-02 | 1966-01-25 | Rca Corp | Methods for preparing etch resists using an electrostatic image developer composition |
| US3068115A (en) * | 1961-02-06 | 1962-12-11 | Xerox Corp | Electrostatic emulsion development |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3793205A (en) * | 1963-07-11 | 1974-02-19 | Commw | Chargeless developer |
| US3804658A (en) * | 1964-07-09 | 1974-04-16 | K Metcalfe | Method of improving development of xerographic images |
| US3477847A (en) * | 1965-07-16 | 1969-11-11 | Eastman Kodak Co | Process for autoelectrolytic reproduction of documents |
| US3986968A (en) * | 1974-02-01 | 1976-10-19 | Rank Xerox Ltd. | Milled and polar solvent extracted liquid developer |
| US3974769A (en) * | 1975-05-27 | 1976-08-17 | International Business Machines Corporation | Method and apparatus for recording information on a recording surface through the use of mists |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1797581A1 (de) | 1974-02-28 |
| NL291381A (en(2012)) | |
| DE1472911A1 (de) | 1969-04-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3574614A (en) | Process of preparing multiple copies from a xeroprinting master | |
| US3607261A (en) | Inorganic crystalline binders for electrophotographic plates | |
| US3573041A (en) | Process for preparing a planographic printing plate | |
| US3392018A (en) | Xerochemical development of electrostatic images | |
| US3438773A (en) | Flexible transparent electrophotographic film and method of development of said film | |
| US3380823A (en) | Photocopying method | |
| US4500616A (en) | Extraction developing method for electrostatic latent images | |
| US3406063A (en) | Xerographic material containing an inorganic photoconductor and nonpolymeric crystalline organic substances and methods of using of such material | |
| US3850830A (en) | Liquid developer containing extender body particles | |
| US3431412A (en) | Infrared copying process and copying material which releases water of crystallization | |
| US3808026A (en) | Liquid development of electrostatic latent image | |
| US3642470A (en) | Method of improving the color tone of a recording layer containing photoconductive lead (ii) oxide | |
| US3876463A (en) | Receiving element | |
| US4634646A (en) | Method for the formation of electrophotographic images | |
| US3445224A (en) | Preparation of imaged offset master | |
| US3779748A (en) | Method of protecting images | |
| US3477847A (en) | Process for autoelectrolytic reproduction of documents | |
| JP3241879B2 (ja) | 現像剤担持体及び現像装置 | |
| US3522040A (en) | Photosensitive insulating material | |
| US3382068A (en) | Photocopying method | |
| US3169062A (en) | Electrophotographic reproduction process | |
| US3756813A (en) | Chargeless method of producing image on photoconductive surface | |
| US3563733A (en) | Methods of preparing relief images by enzymatic digestion | |
| US3434834A (en) | Electrophotographic materials and process of producing same | |
| US3510299A (en) | Method and material for the production of continuous - tone electrophotographic images |