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| Number | Title | Issue Date |
| 5109233 | Method of discharging liquid during a discharge stabilizing process and an ink jet recording head and apparatus using same A method of driving an ink jet recording head and discharging ink during a preliminary discharge process comprises discharging liquid from less than all of a plurality of discharge units during a discharge stabilizing process. In a specific embodiment, du... | 04/28/1992 |
| 5057855 | Thermal ink jet printhead and control arrangement therefor A thermal ink jet printhead and control arrangement therfor includes a housing defining a plurality of ink receiving and emitting chambers with each chamber extending from an aperture in the ink emitting edge of the housing into the interior thereof. A pl... | 10/15/1991 |
| 5043740 | Use of sequential firing to compensate for drop misplacement due to curved platen A method and apparatus actuates a line of printing elements to form characters on a recording medium contained on a curved surface of a platen. The printing elements are sequentially actuated, starting with nozzles located furthest from the platen and pro... | 08/27/1991 |
| 5038153 | Franking machine Franking machine with an inkjet printer wherein the inkjet nozzles are offset in the travel direction (7) of the piece of mail (3) as well as transversely thereto. Due to the offsetting, the ink drop dots can be applied to a piece of mail (3) in partially... | 08/06/1991 |
| 5028812 | Multiplexer circuit A multiplexer circuit for effecting, in successive phases of operation, actuation of selected ones of respective groups of a plurality of capacitance actuated devices electrically represented by a plurality of series-connected capacitors, each device corr... | 07/02/1991 |
| 4985715 | Marker assembly for spray marking dot matrix characters and method of fabrication thereof A linear array of solenoid actuated marker valve assemblies is contained in a housing configured as a manifold which carries marker fluid as well as nebulizing air supplies and a solvent distributing valve for use in clearing the air passages. All valve a... | 01/15/1991 |
| 4965593 | Print quality of dot printers The quality of the images of dot printers such as ink jet printers (20) is improved by spacing the ink jet nozzles (52) of the print head (50) by an amount greater than the pixel spacing of the printing medium (22), and operating the sources in a manner s... | 10/23/1990 |
| 4965608 | Driving method for ink jet head A driving method for an ink jet recording head, causes liquid emission not intended for recording by energizing driving elements provided respectively corresponding to plural nozzles and provided for generating energy for liquid emission. The driving elem... | 10/23/1990 |
| 4887098 | Thermal ink jet printer having printhead transducers with multilevelinterconnections A thermal ink jet printer utilizes a printhead whose electrical connections to the heating elements used to expel the ink droplets has been modified to reduce the effects of parasitic resistance of the common return when a number of resistors are simultan... | 12/12/1989 |
| 4876559 | Recording apparatus having a print permission circuit for protecting plural recording heads driven in accordance with selectively applied print signals from overload A recording apparatus comprises a keyboard to input data; a data processor to process the input data; an print unit to output the processed data; and a power supply circuit for supplying a power source to the apparatus and generating a signal to reset the... | 10/24/1989 |
| 4739415 | Image handling system capable of varying the size of a recorded image An image handling system with a variable magnification function can form a high-quality image at all times. The system sets a relative movement distance or speed between a recording head and a recording material and then determines a recording pixel area ... | 04/19/1988 |
| 4675692 | Dot printing method and apparatus A printing head has two or more columns each consisting of a vertical array of dot printing elements. A pulse motor moves the printing head relative to paper, and another pulse motor line feeds the paper upon printing each line. The columns of the head pr... | 06/23/1987 |
| 4639747 | Recording head drive control apparatus There is provided a liquid jet recording apparatus comprising: recording heads whose recording densities vary in response to drive signals; drive circuits to drive the recording heads; a control circuit to output the drive signals through the drive circui... | 01/27/1987 |
| 4622560 | Line-wise interference/band suppression printing system The line-wise printing of an image composed of an assembly of image elements (pixels) by means of a printing head which includes a row of N (Nࣙ2) printing elements which are arranged along an image line at a mutual distance from each other. The printing... | 11/11/1986 |
| 4511907 | Color ink-jet printer A print mechanism includes plural print heads arranged in a horizontal direction with each print head including a plurality of nozzles arranged in a vertical direction. The entire print mechanism is disposed on a carriage movable in the horizontal directi... | 04/16/1985 |
| 4485386 | Ink jet dot printer The ink jet dot printer comprises a head mounted on a carriage movable along a platen supporting the paper and is formed by a plurality of tubes and piezoelectric transducer for ejecting the ink, which are supported by two parallel plates spaced from one ... | 11/27/1984 |
| 4395720 | Configurational reduction of pulse ejector crosstalk A method of minimizing crosstalk between transducer driven pulse liquid droplet ejectors in ejector arrays. An array mounted on a scanning carriage and having nozzles inclined to the direction of relative motion between the carriage and the print-receivin... | 07/26/1983 |
| 4381515 | Reduction of pulsed droplet array crosstalk A method for eliminating mechanical crosstalk in a drop-on-demand ink jet array by inducing electrical crosstalk using passive elements, which effectively neutralize the mechanical crosstalk.... | 04/26/1983 |
| 4364060 | Nozzle position deviation compensation arrangement for ink jet printing device In an ink jet printing device wherein when a number of n nozzles are sequentially arranged in the direction of transport of recording paper and spaced apart from each other by a distance corresponding to m characters or ink dots so that when ink dots disc... | 12/14/1982 |
| 4353079 | Electronic device having a variable density thermal ink jet recorder An electronic device provided with recording unit in which thermal energy is made to act on a fine solution compartment, the liquid in orifice section is pushed out by the air bubbles generated, keyboard, arithmetic and logical unit, memory unit, control ... | 10/05/1982 |
| 4344079 | System for matrix printing A system is shown for driving a drop-on-demand ink jet printer in a manner enabling the printer to produce symbols, such as those in the ASCII, on a moving surface at a much faster rate than it normally can. To this end, the system is arranged to produce ... | 08/10/1982 |
| 4300144 | Multiple-nozzle ink-jet recording apparatus In the pressure, on-demand type ink-jet printers or the like, the driving voltages applied to respective electrostrictive means of print head or nozzle units are shifted in time so that constructive interferences of sound waves produced by the pressure wa... | 11/10/1981 |
| 4272771 | Ink jet printer with multiple nozzle print head and interlacing or dither means When a multiple-ink-jet printer or plotter prints one array of ink dots by one printing cycle or scan, the spacing between the lowermost row or the leftmost column of one array of ink dots printed previously and the uppermost row or the rightmost column o... | 06/09/1981 |
| 4251823 | Ink jet recording apparatus A multi-nozzle ink jet recording apparatus having a plurality of nozzle apertures arranged in parallel for generating ink droplets. Information signals as applied to respective electrical energy-mechanical energy converting elements associated with indepe... | 02/17/1981 |
| 4215350 | Ink jet printing apparatus with two different jet spacings Apparatus for applying characters to packages or other objects advanced through a marking station. The characters, which each consist of a pattern of points or spots, are applied by the discharge of ink onto the object from a plurality of nozzles arranged... | 07/29/1980 |
| 4115787 | Interpolation in an ink jet system printer In an ink jet system printer of the charge amplitude controlling type which records character patterns in, for example, a 5 × 7 dot matrix pattern, ink droplets not assigned to primary matrix dots are used for interpolation dots which will be deposited b... | 09/19/1978 |
| 4069485 | Bidirectional ink jet printer with moving record receiver An ink jet printer which includes data storage and which prints with multiple jets in an interlace fashion on paper supported on a rotating drum is provided with a bidirectional ink jet transport for moving axially along the drum. A gating arrangement is ... | 01/17/1978 |
| 4059183 | Dot matrix printer with slanted print head and modular skewing of dot pattern information A high resolution letter quality 24 by 40 dot matrix ink jet printer includes a movable print head having print elements disposed to print along a slanted line, a character generating module providing character dot patterns to be printed and a modular ske... | 11/22/1977 |
| 4009332 | Memory management system for an ink jet copier An ink jet copier is provided with a document scanner which scans a document to be copied one line at a time producing non-coded binary data. The binary data is inserted in storage in a predetermined arrangement. Stored data is removed from selected prede... | 02/22/1977 |
