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Magician Harry Houdini patented a "Diver's Suit" enabling the wearer to "quickly divest himself of the suit while being submerged and to safely escape and reach the surface of the water."
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| Number | Title | Issue Date |
| 7385618 | Image forming method and image forming apparatus An image with sufficient gray-scale representation and high resolution is formed on a medium to be recorded, such as an intermediate transfer body, using a thermal printer employing thermal transfer ink. When thermal transfer ink of a thermal transfer ink ribbon ... | 06/10/2008 |
| 7295346 | Methods and apparatus for antialiasing using selective implementation of logical and averaging filter operations Methods and apparatus for antialiasing images that contain one or more image objects such as colored text, line art, and graphical objects, such that the edge pixels of an antialiased image object will exhibit relatively uniform values, and the appearance of the ima... | 11/13/2007 |
| 7286257 | Graphic printing machine for card-type storage medium, method for printing said storage media and storage media A graphic printing machine and method for a card-type storage medium employs a jet printing head and a controller to perform ink jet printing on the medium. The invention is useful for printing plastic or cardboard or paper cards. ... | 10/23/2007 |
| 7237857 | Image forming apparatus capable of printing disc and disc-printing unit for the image forming apparatus An image forming apparatus that is capable of printing a disc and includes a disc-printing unit. The image forming apparatus includes a carrier having a print head, wherein the carrier is reciprocatingly set in a body of the image forming apparatus, a driving motor ... | 07/03/2007 |
| 7038704 | Tape printing apparatus, method of controlling printing thereby, program, and storage medium A tape printing apparatus prints a print image by each dot line onto a tape. A plurality of heating elements of print head are driven while the tape is moved in a longitudinal direction thereof relative to the print head. The heating elements are aligned correspondi... | 05/02/2006 |
| 6976752 | Ink jet printer with resistance compensation circuit An ink jet printer includes a printhead control circuit that produces printhead command signals based on data signals provided by the printer. A power circuit actuates ink ejectors in response to the printhead command signals and includes a plurality of compensation... | 12/20/2005 |
| 6798433 | Method for increasing thermal print quality A printing method for printing a pixel at a gray level x on paper by a printer. The printer includes a thermal print head, which includes a heater for heating a ribbon to print pixels from gray levels 1 to m−1 on the paper, and the ribbon. The method includes: if ... | 09/28/2004 |
| 6762781 | Image recording method and apparatus This invention relates to an image recording method of recording a single pixel forming an image using a plurality of pulses by expressing gradation using a single pulse or a plurality of pulses having a larger pulse width expressing a superordination bit and a sing... | 07/13/2004 |
| 6478485 | Process and apparatus for decorating articles In a process and apparatus for decorating an article, printing ink or electrostatic charges is or are applied in dependence on a digital program in dot form to the article carried by a holder, with individual dots going together to at least form a partial... | 11/12/2002 |
| 6417878 | Image forming apparatus and image forming method for improved gradation reproduction In a thermal printer, the print mode that has been set by the user is judged at the start of printing. When the high-speed print mode is set, the standard deviation ς of the original image data is calculated. According to the standard deviation ς, it is... | 07/09/2002 |
| 6161971 | Image-forming system An image-forming system has an image-forming substrate that includes a base sheet, and a layer of microcapsules, coated over the base sheet, containing a plurality of at least one type of microcapsules filled with an ink. When a dot area of the layer of m... | 12/19/2000 |
| 6135655 | Multipixel dots in monochrome drop-on-demand printing Large, overlapping "mega-dots", placed on small, high resolution pixel locations, are used in high quality monochrome imaging to preserve information to the micro, or pixel, level, thus avoiding the need to use micro-sized droplets. By using multiple pass... | 10/24/2000 |
| 6109799 | Method of activating individually energizable elements in a thermal recording head A method of activating a binary controllable element of a thermal head in correspondence with an N-bit data value representing a density value D by converting a digital signal representative of said N-bit value into a binary signal that, when applied to s... | 08/29/2000 |
| 5975671 | Method and apparatus for printing an image on a device having multiple dot densities and multiple dot areas A method for processing a digitized continuous tone image so that such processed image is adapted to be applied to an image rendering device which prints dots from a set of two or more possible dot-areas and from a set of colorants having different colora... | 11/02/1999 |
| 5957593 | Halftone pattern geometry for printing high quality images A digital halftone pattern geometry adapted not to the characteristics of variable dot size printing presses but to the operating characteristics of the printer itself achieves a high degree of image quality. The techniques for creating the halftone patte... | 09/28/1999 |
| 5934811 | Line printer A line printer including a device for receiving gradation scale values of pixels for one line to be printed, and a plurality of tables for correcting a density variation caused by common resistance unevenness. The line printer further includes a device fo... | 08/10/1999 |
| 5915858 | Organizing pixels of different density levels for printing human readable information on CDs A printing apparatus and printing method for separating, image processing, and printing image objects on CD labels according to whether the image objects require multiple or two density levels.... | 06/29/1999 |
| 5902053 | Video printer having thermal head A recording apparatus according to the present invention has a structure such that recording position of each dot is inverted in one pixel area in such a manner that a direction in which dots of lines in the main scanning direction to be formed on a print... | 05/11/1999 |
| 5897254 | Melt-type thermal transfer printing apparatus and a printing sheet with multiple porous layers In a melt-type thermal transfer printing apparatus, an ink ribbon is brought into contact with a recording medium. A thermal head presses the ink ribbon. By controlling an electric power supplied to the thermal head, a melt or fusion area of ink is contro... | 04/27/1999 |
| 5853255 | Thermal printer and ink ribbon used therewith A gradation correction data used in correcting the gradation of the printed image is recorded on the leader film of the ink ribbon in a form of optically readable marks. Then the ink ribbon is set in a thermal printer, the marks are read out by an optical... | 12/29/1998 |
| 5833376 | Method of activating individually energisable elements in a thermal recording head A method of activating a binary controllable element of a thermal head in correspondence with an N-bit data value representing a density value D by converting a digital signal representative of said N-bit value into a binary signal that, when applied to s... | 11/10/1998 |
| 5823690 | Printer apparatus A printer apparatus in which a multi-nozzle print head can be produced at low cost and which can deal with changes caused with lapse of time. With the printer apparatus, effective resolution can be improved and a more accurate gradation level in picture p... | 10/20/1998 |
| 5795081 | Line printer A line printer including a device for receiving gradation scale values of pixels for one line to be printed, and a plurality of tables for correcting a density variation caused by common resistance unevenness. The line printer further includes a device fo... | 08/18/1998 |
| 5697712 | Image processing method and apparatus A method and apparatus proecsses a dot image formed of a plurality dots, each dot having a density level. In the method and appratus, a dot pattern is extracted from the dot image, which dot pattern being formed of an observation dot and dots surrounding ... | 12/16/1997 |
| 5685652 | Method of preparing threshold matrix and method of and apparatus for generating halftone image The present invention is made to effectively prevents the occurrence of undesirable dot patterns in the process of FM screening. Threshold values in an M1×M2 threshold matrix are determined using a plurality of fundamental tiles of 2×2 dots in size. The... | 11/11/1997 |
| 5660486 | Image printing apparatus and image printing method An image printing device includes a latent image charge keeping medium including a pyroelectric layer, a thermal head for selectively heating the charge keeping medium according to a signal, and an electrically conductive film disposed to be brought into ... | 08/26/1997 |
| 5533816 | Thermal recording method and recording apparatus using the same In a thermal recording method of recording an image on a recording medium and a thermal recording apparatus using this thermal recording method, image data is divided into blocks in units of a plurality of bits to convert the blocks into recording head dr... | 07/09/1996 |
| 5494361 | Color image recording method A half tone color image recording method is provided in which picture cells of a same main scanning line are staggered such that every second picture cell is shifted in a sub scan direction orthogonal to the main scan direction in one or two of three colo... | 02/27/1996 |
| 5400059 | High speed thermal printer A high speed thermal printer including a maximum data detector for detecting maximum gradation data from the image signal of a line received from a signal input source on a line-by-line basis, a drum motor for transporting printing paper, a reel motor for... | 03/21/1995 |
| 5163760 | Method and apparatus for driving a thermal head to reduce parasitic resistance effects A thermal print head having a plurality of resistive heat elements and associated individual current sources which are enabled allowing selectable currents to pass through each of the selected thermal print elements. In a binary mode, the current sources ... | 11/17/1992 |
| 5131767 | Halftone printing system A halftone printing system comprising reference level generation means for generating a reference gradiation level, decision means for comparing a gradation level input signal with the output signal from the reference level generation means and deciding i... | 07/21/1992 |
| 4952085 | Printer for generating images with high contrast gray and color tone gradations The invention relates to a printer, preferably a thermal printer, equipped with a line-width printing head including a plurality of closely spaced printing elements. To permit high contrast gray tone gradation in a dot matrix image, the invention provides... | 08/28/1990 |
| 4729038 | Recording apparatus capable of forming a shadow print impression to characters A shadow printing operation is provided in a laser recording apparatus only for data which is detected to be character data. Line memories are utilized to store data therein, and examined to determine any change of stored data from non-character data to c... | 03/01/1988 |
| 4712930 | Gradation thermal printhead and gradation heat transfer printing apparatus A gradation thermal printhead having a plurality of heat generating elements each having a heat generating body connected between a pair of electrodes, the electric resistance value of the heat generating body being locally increased in one or more portio... | 12/15/1987 |
| 4335968 | Tint restoring device employing a thermal printing head A reading head scans a document to be reproduced line by line and delivers an analog signal the amplitude variations of which represent the variations in tint on the document. An analog-digital converter preceded by a sampler for sampling the analog signa... | 06/22/1982 |
