Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 6980283 | Method and associated apparatus for the standardized grading of gemstones A method and associated apparatus (5) for the standardized grading of gemstones is provided. The system gauges the spectral response of a gemstone subject to a plurality of incident light sources (77, 64, 90, 92, 102) within an imaging apparatus. The o... | 12/27/2005 |
| 5176947 | Electroerosion printing plates Improved electroerosion recording media can be prepared by utilizing, on top of a polyester, paper, or metal substrate, a polyvinylbutyral polymer cross-linked with a mixed phenol-tert-butylphenol formaldehyde cross-linking agent as a base layer, and an e... | 01/05/1993 |
| 5061837 | Method and apparatus for selectively demetallizing a metallized film A method and apparatus for selectively demetallizing a metallized film whereby the metallized web is selectively demetallized by bringing the web into contact with two electrodes, one of which contacts a greater surface area of the web than the other, and... | 10/29/1991 |
| 5052292 | Method and means for controlling overburn in spark-imaged lithography plates A method of controlling unwanted degradation of overlapping image points in a sparked-imaged lithographic plate. A suitable conductive sheet having an appropriately selected volume resistivity is placed beneath the conductive metal sheet of the plate, the... | 10/01/1991 |
| 4896044 | Scanning tunneling microscope nanoetching method A method is described for forming uniform nanometer sized depressions on the surface of a conducting substrate. A tunneling tip is used to apply tunneling current density sufficient to vaporize a localized area of the substrate surface. The resulting depr... | 01/23/1990 |
| 4894279 | Electroerosion print media having protective coatings modified with organotitanium reagents The present invention provides an improved electroerosin recording medium which comprises, in a preferred embodiment, a non-conductive support, a hard, abrasion resistant layer, preferably comprising an organic polymer matrix containing an inorganic parti... | 01/16/1990 |
| 4866463 | Electrified transfer recording apparatus An electrified transfer recording apparatus, which is characterized in that a draw-back region is provided for the end part of a printing head to be used for the electrified transfer recording apparatus which drives selectively a plurality of recording el... | 09/12/1989 |
| 4830909 | Scratch resistant recording materials for electroerosion printing comprising cross-linked polymer base layer Electroerosion recording materials of superior scratch resistance are provided by incorporating a hard, crosslinked polymer film or layer between the support and the removable, thin conductive layer to reduce plastic deformation of the support under stylu... | 05/16/1989 |
| 4748463 | Printing apparatus A printing apparatus transfers an ink layer corresponding to an image formed on a conductive light reflective layer by electrosensitive recording onto a recording paper. The apparatus is provided with a high voltage applying electrode or a corona charger ... | 05/31/1988 |
| 4729310 | Printing method A printing system incorporating a re-usable ink image transfer surface. A material which forms a thin hydrophobic layer is arranged by various techniques over a substantially hydrophilic transfer surface in a configuration which defines the desired latent... | 03/08/1988 |
| 4684960 | Thermoelectric printing apparatus An electrothermal transfer printing apparatus employing an electrothermal transfer film having an ink layer and a resistive layer is used with a print head having a substrate which carries recording electrodes. The recording electrodes are fabricated on t... | 08/04/1987 |
| 4617579 | Hydrophilic protective coatings for electroerosion printing Electroerosion recording materials for "direct negative" and "offset master" are provided with a surface protective coating of solid conductive lubricant dispersed in a hydrophilic, crosslinked polymeric matrix. The protective films are especially useful ... | 10/14/1986 |
| 4596733 | Electroerosion recording material with polyorganosiloxane overlayer For high speed electroerosion recording, this invention provides a polyorganosiloxane overlayer which includes high lubricity solid particles as a filler. The overlayer provides a combination lubricant and protective layer for the thin metal layer which i... | 06/24/1986 |
| 4568621 | Thermal transfer printing processes with electroerosion and materials therefor Processes for thermal transfer printing are disclosed which comprise electroerosion printing to produce an image bearing element and exposing the imaged element to irradiation so as to permit transfer of thermographic ink from an associated ink layer or i... | 02/04/1986 |
| 4542393 | Print head for an electroerosion printer Print head for an electroerosion printer, with print electrodes arranged in rows and/or columns in a holder, and with at least one slightly shorter sensor electrode at the trailing edge of the print head to control the feeding of the print electrodes comp... | 09/17/1985 |
| 4536769 | Method of recording information on an electrosensitive record carrier The invention concerns a method of recording information on an electrosensitive record carrier, preferably a record carrier covered with a metallic or metalliferous layer, by means of a print head movable relatively parallel to the surface of the record c... | 08/20/1985 |
| 4482901 | Method and system for thermally recording information on a metalized recording carrier To permit multi-color recording on metalized recording paper, in which an electrode burns off a metal layer covering a colored pattern, and to provide for ready association of the electrode with a specific discrete removal position and particular colors a... | 11/13/1984 |
| 4463365 | Electrosensitive printing technique Apparatus for the integral imprinting of indicia on electrosensitive substrates, including substrates subdivided into electrically discontinuous regions such as die cut labels. A negative voltage is supplied to a print electrode configured in the shape of... | 07/31/1984 |
| 4462038 | Multicolor recording carrier and method of recording To permit color reproduction of signals representing a color image by burning off a metalized layer (2) on an insulating substrate (1, 3), by contacting the metalized layer with an electrode (35) and passing a current pulse through the electrode, the colo... | 07/24/1984 |
| 4459604 | Multicolor recording carrier and method of recording To record images, including multicolor representation of colored images on electrosensitive coated paper in which a metallized coating is burned off from a substrate which may be either transparent or opaque, color element information is applied to the su... | 07/10/1984 |
| 4441112 | Non-impact dot matrix printer The non-impact dot matrix printer is a high speed alpha-numeric, electric spark discharge printer that utilizes a rotating perforated dielectric belt in cooperative association with a laminar stack of insulated electrical conductors to control electric sp... | 04/03/1984 |
| 4419680 | Electrographic printing system An electrographic printing system comprises oppositely opposed print and complement electrode means to produce a dielectric breakdown through a recording medium transported in a printing gap between the electrode means. A visible mark or image is formed o... | 12/06/1983 |
| 4415912 | Recording method and recording apparatus to record, on a grey scale, representations of images under control of electrical command signals To render the grey scale of recording on an electrosensitive recording medium (16) independent of voltage applied by an electrode (22) while maintaining a predetermined relationship between a command voltage (Uc) and the resulting grey scale of... | 11/15/1983 |
| 4395715 | Method and arrangement for controlling the print current in metal paper printers For record carriers with a greatly varying thickness of the metal layer, the burn out process is effected dynamically with respect to the current strength. During the starting phase up to the beginning of the actual arcing phase a relatively high current ... | 07/26/1983 |
| 4358778 | Adjustable blade for facsimile recording machine The facsimile recording machine having a loop electrode which moves along its own locus, a portion of which includes a linear track. The linear track is opposed by a scanning electrode, between which, a printout is produced on a web.The linear track in wh... | 11/09/1982 |
| 4342043 | Sheet feeding for a facsimile system with anti-static electricity additive A system for reliably feeding individual sheets of recording media is disclosed especially as such system is related to media suitable for electrosensitive recording such as in a facsimile or other device. According to a preferred embodiment, such system ... | 07/27/1982 |
| 4330789 | Electrostatic printing apparatus including an electron beam tube An electron beam tube assembly has a pattern of conductors 20 at least partially provided by being deposited on a major surface of a face plate 16, of the tube 13, the conductors to extend from within the tube 13, at least to an edge 18 of the face plate ... | 05/18/1982 |
| 4319255 | Tinted metallized recording medium Method of coloring the erodible metal surface of a metallized record medium by overprinting discrete limited areas of the surface with one or more inks of preselected colors to provide a distinctive halftone tint to the surface without adversely affecting... | 03/09/1982 |
| 4253010 | Spatially distributed electrostatic perforation of moving webs A method and apparatus for controlling the perforation of webs being moved in a longitudinal direction, by an array of electrodes spatially distributed in a transverse direction, wherein selected control electrodes are added to or removed from the electro... | 02/24/1981 |
| 4241356 | Recording medium for thermographic recording of data items To improve the corrosion resistance of a metallic layer which is being burned off by electrodes, and decrease the contact pressure of the electrodes by eliminating metallic residues upon an electrical discharge between an electrode and a metallic surface,... | 12/23/1980 |
| 4224601 | Electrodynamic printing system An electrodynamic printing system with at least one conductive stylus electrode against the back side of a sheet to be written upon and a store of solid conductive writing material, preferably in a roller electrode form, disposed on the opposite side of t... | 09/23/1980 |
| 4188880 | Blank for conversion into a perforated stencil by spark erosion A blank and method for using the same wherein the blank for conversion to a stencil by spark erosion through a stencil layer to a conductive face is arranged so that the layer and face do not have to be peeled apart and chemical and physical interaction b... | 02/19/1980 |
| 4162503 | Printing head with taut wire electrodes A recording device for recording on electro-sensitive paper, comprising a recording head with a row of recording electrodes which consist of taut wires which freely extend through the air between grooves in a unitary support. The paper is passed between t... | 07/24/1979 |
| 4157554 | Multiple-electrode print head for metal paper printers In a high resolution electroerosion printer, a print head comprises a print head body of plastic or glass in which are embedded closely spaced glass tubes. The glass tubes provide low friction passageways for fine wire electrodes which extend through the ... | 06/05/1979 |
| 4151535 | Electro-erosion head and manufacturing method An electro-erosion head is provided which is formed from thin sheets of electrically conductive material. Each thin sheet of electrically conductive material has at least one narrow extension extending from an edge thereof to form an electrode. A connecto... | 04/24/1979 |
| 4139856 | Electrostatic recorder having a fixed head made up of a laminated stack of recording styli An improved recorder for recording substantially simultaneously across the width of a relatively wide sheet of electrosensitive material has a fixed head made up of a laminar stack of recording styli or, as referred to herein, recording pins. Adjacent pin... | 02/13/1979 |
| 4095240 | Exhaust system for pyrographic printer A pyrographic printer comprises an exhaust system having an elongated inlet and a bifurcated throat. The inlet is adjacent to and substantially coextensive with the path of travel for the stylus, and the throat is configured to define a main passage which... | 06/13/1978 |
| 4046928 | Electroresistive paper This invention relates to an electrosensitive marking blank having a blushed conductive layer and a pigment containing blushed masking layer. The instant electrosensitive element has particular utility in that a relatively thin masking layer in combinatio... | 09/06/1977 |
| 4021605 | Electronic circuit for electronic stencil cutter Stencil cutting apparatus for electrically burning information from an original document into a stencil material having non-linear burning characteristics by the application of electrical pulses to a stylus contacting the stencil material positioned on a ... | 05/03/1977 |
| 3946400 | Recorder for electrosensitive record carriers having a segmented counter electrode In conventional recorders using electric recording, sooner or later cloudiness of the record carrier occurs and prevents satisfactory recording. The cloudiness is due to the counter-electrode which cannot be manufactured so as to have a perfectly smooth s... | 03/23/1976 |
