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| Number | Title | Issue Date |
| 7248376 | Printer module with a pen-like configuration A printer module includes a body that defines a print media feed path and a feed opening to permit print media to be positioned in the print media feed path. A pagewidth printing mechanism is positioned in the body to carry out a printing operation on the print medi... | 07/24/2007 |
| 7092561 | Character recognition, including method and system for processing checks with invalidated MICR lines An automated analysis method and tool for a digitally imaged financial item can digitally recognize a plurality of characters across an area of a digital image containing character indicia at predetermined positions in the area and also possibly containing non-chara... | 08/15/2006 |
| 6705224 | Stamp apparatus In a stamp apparatus, a paper-sheet object is conveyed in the arrow direction between a presser roller and an impress hub having a predetermined character/symbol string. Since a cam is rotated in the arrow direction by a rotary solenoid, it makes the presser roller ... | 03/16/2004 |
| 6474229 | Marking device and marking method A marking device includes a marking mechanism, a marking portion moving mechanism, and a pressure adjusting circuit. The marking mechanism marks a surface to be processed, of an object to be marked, by reciprocating a marking portion. The marking portion ... | 11/05/2002 |
| 6153074 | Recording material for electro-coagulation printing and method for printing thereon A recording material having a compression modulus of elasticity of 650 kgf/cm2 or less in the direction of the thickness thereof and exhibiting a maximum strain of 0.08 or more generated under pressure of 40 kgf/cm2 in the thickness ... | 11/28/2000 |
| 6027265 | Printer having improved print head mechanism and method A printer having a platen for supporting a binder strip to be printed, a ribbon positioned adjacent the platen and print head mechanism having print pins, driver coils associated with each print pin and a heating element for heating the print pins. A driv... | 02/22/2000 |
| 5720561 | Printer coil temperature sensor and method A line printer having a hammerbank with hammers that are held by a permanent magnet and released by electrically driven coils. The temperature of the coils is determined by the relative resistance of the coils to provide an output equivalent to the temper... | 02/24/1998 |
| 5302035 | Method of driving wire-dot print head To suppress a secondary bound of a print wire of a dot matrix printer which may occur after a single dot or continuous dots are printed and also to prevent both density variation of printed characters and printing ghost from occurring, a braking pulse is ... | 04/12/1994 |
| 5238312 | Impact printer with printing pressure setting For the line determined by a line feed determining portion 2 to be fed greatly, for the line determined by the line feed determining portion 2 to be fed small and further determined by a printing density determining portion 3 to be printed with a low prin... | 08/24/1993 |
| 5201876 | Method of adjusting the impact energy of a letter key or type element of a printing machine and typewriter, printer or the like printing machine using that method The method for determining impact energy of a type element of the printing machine includes providing at least two different-length flight paths for the type elements by changing a distance between a resting position of the hammer and a place of impact of... | 04/13/1993 |
| 5171094 | Printing apparatus having high impact erasing mechanism Upon operation of an erasure key for erasing a printed character, a correction ribbon is moved in an erasure position according to rotation of a motor, and then, the motor is continuously rotated forward at a current I2 larger than a current I1 in a print... | 12/15/1992 |
| 5092692 | Print pressure retrival from ascending order table A printer has a memory containing print information on a plurality of characters, grouped by a print pressure of the character, and a control unit for controlling the print pressure in accordance with the print information stored in the memory. The memory... | 03/03/1992 |
| 5046413 | Method and apparatus for band printing with automatic home compensation A system and method for automatically compensating for inaccuracies in the positioning of the timing mark sensor of a band line printer. A selected hammer is operated to impact a test character and an adjacent space between characters or a space provided ... | 09/10/1991 |
| 5044793 | Hammer device having adjustable striking force A hammer device generates a magnetic moving force in a magnetic member by energizing a coil, whereby a hammer strikes a recording sheet to form a record thereon by means of its moving force, the striking force of the being capable of regulation by changin... | 09/03/1991 |
| 5039238 | Dot-matrix printer with impact force determination In a dot-matrix printer including a wire-dot print head having print wires which print dots by impact on a printing medium, and a sensor for sensing the position of the print wires and generating signals indicating the position of the print wires, a param... | 08/13/1991 |
| 4897557 | Electronic control system, in particular for a printer Such electronic control systems contain safety circuits for device components endangered by excessive currents or excessive voltages, which are constructed only for a pulse operation and not for higher relative switch-on times. In order to shield the effe... | 01/30/1990 |
| 4881835 | Printer having adjustable gap between print head and recording medium A printer including a gap changeover device for moving a print head and a platen relative to each other and thereby adjusting a head gap between the print head and a recording medium on the platen. A switch is provided to produce a signal where the record... | 11/21/1989 |
| 4877342 | Method of moving print elements in printheads and a printhead with moving mechanism for print elements The invention relates to a method in printheads (1) with a plurality of print elements (4) arranged movable in relation to each other and a moving mechanism (7, 9, 11, 12, 14) with magnetic field-responsive forces for moving selectable print elements to p... | 10/31/1989 |
| 4848943 | Method and apparatus for energizing a printhead A method and apparatus for energizing a printhead by maintaining substantially constant peak current in the actuator means of the printhead regardless of the duty cycle of the actuator means. The method and apparatus establishes a minimum time period for ... | 07/18/1989 |
| 4838157 | Digital printhead energy control system A digital printhead energy control system includes a first storage device for receiving hammer pulse duration data, a second storage device for receiving hammer pulse energization data and for producing a trigger signal and hammer pulse energization signa... | 06/13/1989 |
| 4828410 | Serial print wheel impact printer Disclosed is an improved serial impact printer which both prints and serrates a document. The printer includes a print wheel which is rotated to position a selected character in front of an anvil. The print wheel includes a wheel-like circular member havi... | 05/09/1989 |
| 4810113 | Print head driving system A print head driving system for driving a print head having a plurality of print wire controlling magnetic circuits and a plurality of print wires respectively operatively associated with the print wire controlling magnetic circuits regulates the flight s... | 03/07/1989 |
| 4806031 | Uniform print density and registration in an impact printer Commencing with the first print hammer(s) "out", or actuated, on each print line the hammer drive current is boosted 10% for a period, ranging from 25%=650 microseconds for single part forms to 50% for multi-part forms, of the total print hammer flight ti... | 02/21/1989 |
| 4797017 | Wire dot matrix printer capable of printing letters on a plurality of superposed sheets of paper Disclosed is a wire dot matrix printer capable of printing letters on a plurality of superposed sheets of paper, in which there is provided a drive current adjuster for continuously increasing and decreasing the drive current of solenoids which move print... | 01/10/1989 |
| 4774882 | Method for controlling printing impact power in impact type dot printer A method for controlling printing impact in an impact type dot printer which controls printing impact energy to be increase in case of normal density imprint function and to be decreased in case of high density imprint function in the controlling means of... | 10/04/1988 |
| 4740094 | Print pressure control device There is disclosed a print pressure control device for a printer having at least two types of type wheels for printing characters, which gives different limits to a print pressure regulation switch depending on the type of the type wheel.... | 04/26/1988 |
| 4735517 | Printer having flux regulator An impact printer has a flux regulator for each of the coils in its printhead. Each regulator provides a reference voltage indicative of the desired flux in the associated coil. A circuit is provided for measuring the flux in the coil and for providing a ... | 04/05/1988 |
| 4710040 | Printer having constant pressure between print head and platen A non-impact printer having a biasing mechanism which provides for constant and self-adjusting pressure between the associated print head and platen. The biasing mechanism includes a base member, a pivoting member, and a biasing member. The biasing mechan... | 12/01/1987 |
| 4690575 | Device for controlling printing pressure according to the kind of ink ribbon being used A printer which operates to use selectively at least two different types of ink ribbons. The printer is characterized in that the printing pressure is varied in response to the selection of the type of ink ribbon.... | 09/01/1987 |
| 4683817 | Dot matrix print head energy control circuit A dot matrix print head energy control circuit (commonly known as voltage source compensation) utilizes two pulse width modulator circuits (one for receipt printing and one for forms printing). The control circuit also comprises control circuitry and a da... | 08/04/1987 |
| 4664543 | Device for monitoring and compensating for changes in the flight time of the print hammers of impact printers A device for monitoring and compensating for changes in the flight time of the print hammers of impact printers is disclosed. The flight time of the respectively monitored hammer is calculated from the elapsed time between the moment of firing of a hammer... | 05/12/1987 |
| 4653945 | Rotary wheel printing apparatus with controllable hammer striking force There is provided a printing apparatus which drives a printing wheel in response to a rotation angle data corresponding to an input character code and drives a printing hammer with an impact force corresponding to this input character code. A data process... | 03/31/1987 |
| 4644477 | Printing apparatus A printing apparatus having a first memory which stores as one unit 8-bit data comprising first data of 6 bits and second data of 2 bits, the first data comprising position data which correspond respectively to printing types formed on the circumference o... | 02/17/1987 |
| 4627348 | Printing apparatus There is disclosed printing apparatus composed essentially of molded plastics material which has relatively few parts, is easy to manufacture and maintain, and is lightweight and portable. The apparatus is illustrated as being of the table top type which ... | 12/09/1986 |
| 4627344 | Impact printer with magnetic interaction compensation In the high speed impact printer disclosed herein, the effects of magnetic interaction between adjacent magnetic actuators is offset or compensated for by providing a programmable delay in the energization of each magnet, the value of the delay being prog... | 12/09/1986 |
| 4597328 | Print hammer flight time control system A hammer timing control system for the print hammers of a line printer uses a plurality of read/write RAMs in place of individual fire control circuits for controlling the firing periods of the hammers. A delay value RAM stores individual delay values to ... | 07/01/1986 |
| 4569607 | Printing hammer rebound control A printing hammer rebound control system for use in impact-type printing machines is provided. The present system includes separate memory devices for storing the information of primary and its associated secondary energization. The primary energization i... | 02/11/1986 |
| 4568208 | Printer In a printer, a printing clutch and a hammer impact changeover mechanism are controlled through a control member by one electromagnet, in such a manner that in response to a printing signal the clutch is engaged through the control member by the electroma... | 02/04/1986 |
| 4547087 | Microprocessor-controlled printing mechanism having an opto-electronic sensor A plunger armature printing system incorporates an opto-electronic sensor for sensing the movement of a vane fixed to the armature of the print mechanism. The output signal generated by the sensor is employed to define periods for measurement of the speed... | 10/15/1985 |
| 4493253 | Variable impact printing means A variable impact printing mechanism includes a supporting magnetic structure having a plurality of circumferential coils mounted thereon and having a central bore in which a magnetic hammer element is positioned for linear movement to cooperate with a ty... | 01/15/1985 |
