Magnetic image character recognition processes
AssigneeXerox Corporation
InventorsRobert J. Gruber, Ronald J. Koch, Timothy J. Fuller
Life of this patent
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Abstract
An electrophotographic process for enabling substantially tamperproof images, including the generation of a latent image; developing the image with a toner composition comprised of resin particles, magnetite particles, and a colored organic soluble dye, a colored organic insoluble dye, or the salts thereof; and an optional additive component comprised of an aliphatic hydrocarbon or a polymeric alcohol of the formula CH.sub.3 (CH.sub.2).sub.n CH.sub.2 OH wherein n is a number of from about 30 to about 500.
Claims37
An electrophotographic process for enabling documents that are resistant to tampering, or wherein tampering can be substantially avoided, which comprises the generation of a latent image;
- developing the image with a toner composition comprised of resin particles, magnetite particles, and a colored organic soluble dye, or a colored organic insoluble dye, which dye is selected from the group consisting of Rhodamine red dye and Methylene Blue dye;
- and contacting the developed image with a solvent thereby resulting on the document a permanent visible color change.
An electrophotographic process which comprises the generation of a latent image in an electronic printing MICR apparatus;
- thereafter developing the image with a toner composition comprised of resin particles, magnetite particles, a highly colored organic soluble dye, a colored organic insoluble dye, and an optional aliphatic hydrocarbon, or an additive component comprised of polymeric alcohol of the formula
- CH.sub.3 (CH.sub.2).sub.n CH.sub.2 OH
- wherein n is a number of from about 30 to about 500;
- and contacting the developed image with magnetic ink characters with a solvent thereby causing a permanent visible color change on said image, and wherein said dye is selected from the group consisting of Rhodamine red dye and Methylene Blue dye.
An electrophotographic process which consists essentially of the generation of a latent image in an electronic printing MICR apparatus;
- thereafter developing the image with a toner composition comprised of resin particles, magnetite particles, and a selected from the group consisting of Rhodamine Red dye and Methylene Blue dye;
- contacting the developed image with a solvent selected from the group consisting of methanol, ethanol, propanol, phenol, benzene, acetic acid, toluene, chloroform, Freons, and mixtures thereof thereby resulting in a permanent visible color change on said image.
A process for processing personal checks which consists essentially of generating images in an electronic printing device;
- developing the images with a developer composition comprised of a toner comprised of resin particles having dispersed therein magnetite particles, a highly colored dye selected from the group consisting of Rhodamine red dye and Methylene Blue dye and as an optional component a polymeric alcohol of the formula
- CH.sub.3 (CH.sub.2).sub.n CH.sub.2 OH
- wherein n is a number of from about 30 to about 500, and carrier particles;
- transferring the images to a substrate;
- fusing the images thereto;
- contacting the developed fused images with a solvent thereby resulting in a permanent visible color change on said image.
A process for processing personal checks which comprises generating images in an electronic printing device;
- developing the images with a developer composition comprised of a toner comprised of resin particles having dispersed therein magnetite particles, and highly colored dyes selected from the group consisting of Rhodamine red dye and Methylene Blue dye and carrier particles;
- transferring the images to a substrate;
- fusing the images thereto;
- and contacting the developed images with magnetic ink characters thereon with a solvent thereby resulting in a permanent visible color change on said images.
A xerographic process which comprises generating latent images with high or low speed electronic printing devices;
- thereafter developing the image with a developer composition comprised of a toner composition comprised of resin particles, magnetite particles, and an organic soluble dye as selected from the group consisting of Rhodamine Red dye and Methylene Blue dye;
- and carrier particles;
- contacting the developed images with a solvent thereby resulting in a permanent visible color change on said images.
A process which comprises the formation of a latent image on a photoconductive member in an electronic imaging apparatus;
- developing the image with a toner composition comprised of resin particles having dispersed therein magnetite particles, and a colored dye selected from the group consisting of Congo Red, Induline 6B Cl 860, Celliton Fast Yellow 7G, Cyanine Cl 806, Pinacyanol Cl 808, Meldola's Blue Cl 909, Toluylene Blue Cl 820, Methylene Green B Cl 924, Paraosaniline Cl 676, Rhodamine 3GO, Brilliant Milling Green B Cl 667, Scarlet Cl 1034, Algol Brilliant Green BK, and Quinoline Yellow O Cl 801;
- subsequently transferring the image to a supporting substrate;
- fixing the image;
- and subsequently contacting the image with a solvent thereby resulting in permanent staining of the said image.
An electrophotographic process for enabling substantially tamperproof images, which comprises the generation of a latent image;
- developing the image with a toner composition comprised of resin particles, magnetite particles, and a colored organic soluble dye or, a colored organic insoluble dye, which dye is selected from the group consisting of Rhodamine Red dye and Methylene Blue dye, and contacting the developed images with a solvent selected from the group consisting of methanol, ethanol, propanol, phenol, benzene, acetic acid, toluene, chloroform, Freons, and mixtures thereof thereby resulting in a permanent visible color change on said images.
An electrophotographic process for enabling substantially tamperproof images, which consists essentially of the generation of a latent image;
- developing the image with a toner composition comprised of resin particles, magnetite particles, and a colored organic soluble dye selected from the group consisting of Rhodamine Red dye and Methylene Blue dye;
- and an optional additive component comprised of an aliphatic hydrocarbon or a polymeric alcohol of the formula
- CH.sub.3 (CH.sub.2).sub.n CH.sub.2 OH
- wherein n is a number of from about 30 to about 500, and contacting the developed images with a solvent thereby resulting in a permanent visible color change on said image.
Dependencies are inferred from the claim text.