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| Number | Title | Issue Date |
| 7082277 | Contact charger and image forming apparatus A contact charger for charging a charging target (e.g., a photosensitive member) includes a charging brush to be in contact with the charging target, and auxiliary charging particles to be interposed between the brush and the charging target. The auxiliary charging ... | 07/25/2006 |
| 6146799 | Method for printing continuous tone images with high density resolution A method and device for printing a reproduction of an image by using toner particles, in which digital image data of at least two density separations of the image is obtained for forming at least two sub-images. The image data of a first sub-image of the ... | 11/14/2000 |
| 5963767 | Image printing apparatus An image printing apparatus includes a number of image forming units for forming toner images of different colors in alignment on image receiving material in accordance with electronic image information signals fed to each image forming unit. Each image f... | 10/05/1999 |
| 5764429 | Magnetic writing of repetitive information on magnetic wheel and magnization head for media A method and apparatus for recording on magnetic media which comprises a magnetic wheel made from a magnetic material, that is essentially an isotropic material such as NdFeB (neodymium iron boron) material having an energy product on the order of 7.1 MGO... | 06/09/1998 |
| 4711815 | Recording medium This invention relates to a recording medium in which a transition metal oxide showing photochromism is used as the recording layer and the said recording layer or an upper layer adjacent to the recording layer is made to carry a proton donor. This record... | 12/08/1987 |
| 4646108 | Method for magnetographic printing, and magnetographic printing machine The invention relates to a printing method and to a magnetic printing machine, which makes it possible to obtain images in at least two colors on a printing medium. A magnetic recording device (13) is arranged such that when it is excited by pulses it for... | 02/24/1987 |
| 4602879 | Multicolor printer using magnetic and positive and negative electrostatic charging A multicolor printer for providing a printout of record data in desired colors by using the three primary colors of cyan, yellow and magenta either singly or by subtractive color mixing for developing a magnetic latent image and/or at least one type of el... | 07/29/1986 |
| 4449131 | Process and machine for magnetographic printing (III) The invention relates to a printing process, as well as to a machine which enables images in color to be produced on a print carrier. The machine which implements said process comprises magnetic heads (13-l, . . . 13-n) energized by impulses emitted by a sourc... | 05/15/1984 |
| 4449130 | Process and machine for magnetographic printing (I) The invention relates to a printing process and machine which enables the production of two-color images on a print carrier. The machine which carries out this process consists of two applicators (40,42) placed one after the other to deposit two layers of... | 05/15/1984 |
| 4449132 | Process and machine for magnetographic printing (II) The invention relates to a magnetographic printing process, as well as to a achine which enables images in color to be produced on a print carrier. The machine which carries out this process comprises magnetic heads (13-1, . . . , 13-n) excited by pulses e... | 05/15/1984 |
| 4449133 | Process and machine for magnetographic printing (IV) The invention relates to a magnetographic printing process as well as to a machine which enables the production of images in two colors on a print carrier. The machine which carries out said process comprises magnetic heads (13-1 . . . , 13-n) energized b... | 05/15/1984 |
| 4336546 | Magnetic printing apparatus Magnetic printing apparatus for forming on a substrate a colored print of an original colored design, said apparatus comprising a ferromagnetic printing means which is imposed on an electrically conductive support; means for forming on the ferromagnetic p... | 06/22/1982 |
| 4323904 | Magnetic printing process and apparatus Magnetic printing apparatus for forming on a substrate a colored print of an original colored design, said apparatus comprising a ferromagnetic printing means which is imposed on an electrically conductive support; means for forming on the ferromagnetic p... | 04/06/1982 |
| 4229072 | Color display system using magneto-optic screen having a dispersive Faraday coefficient A display system using the dispersive Faraday coefficient of a magnetic screen to obtain a color display from white light is disclosed. A beam of energy is directed upon a magnetic screen while concurrently an intensity modulated magnetic field is directe... | 10/21/1980 |
| 4195303 | Magnetic printing process and apparatus Magnetic printing process, and apparatus for carrying out same, comprising: (a) forming a magnetic image on a ferromagnetic material which is imposed on an electrically conductive support; (b) developing the magnetic image by decorating same with a ferromagnetic ... | 03/25/1980 |
| 4191961 | Magnetic printing process and apparatus Magnetic printing process, and apparatus for carrying out same, comprising: (a) forming a magnetic image on a ferromagnetic material which is imposed on an electrically conductive support and subjecting the ferromagnetic material to the action of a static neut... | 03/04/1980 |
| 4117498 | Magnetic printing process and apparatus Magnetic printing process, and apparatus for carrying out same, comprising: (a) forming a magnetic image on a ferromagnetic material which is imposed on an electrically conductive support; (b) developing the magnetic image by decorating same with a ferromagnetic ... | 09/26/1978 |
| 4099186 | Magnetic printing process and apparatus Magnetic printing process, and apparatus for carrying out same, comrpising: A. forming a magnetic image on a ferromagnetic material which is imposed on an electrically conductive support and subjecting the ferromagnetic material to the action of a charge dissi... | 07/04/1978 |
| 4068239 | Latent magnetic image transfer method and apparatus A copying machine which includes a thin flexible sheet with a layer of chromium dioxide, a lamp for shining light at the sheet and a document to be copied to form a magnetic image on the chromium dioxide layer, a drum having a layer of nickel cobalt, a tr... | 01/10/1978 |
| 3965478 | Multicolor magnetographic printing system A multicolor magnetographic printing system wherein a magnetizable surface is recorded upon with a different recording wavelength for each color to be printed. Toner is supplied which includes a mixture of different types of particles, each having a diffe... | 06/22/1976 |
| 3947879 | Multi-color recording medium responsive to force fields and apparatus for recording on the medium A multi-color recording medium responsive to a magnetic or an electrostatic recording field for recording an input signal thereon and having a continuous web of a transparent encapsulating material containing a suspension of highly reflective flakes with ... | 03/30/1976 |
