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| Number | Title | Issue Date |
| 6926503 | Pump vibration reduction system A method and apparatus for reducing the vibration and noise from a pump that is located in an analyzer. Vibration and noise dampening materials are used to secure the pump so that the vibration and noise are kept to a minimum, thereby, making it more comfortable for... | 08/09/2005 |
| 5762429 | Printing head structure of calculator having bold characters A printing head structure of calculator, including a belt type printing head the outer periphery of which is disposed with at least one group of fine characters and at least one group of coarse characters. The fine characters have the same symbols and num... | 06/09/1998 |
| 5524992 | Small printer A small printer is disclosed which contains a character member, such as a character ring or a character belt. The character member comprises a plurality of character bodies which are connected by coupling portions and which comprise dot-like projections w... | 06/11/1996 |
| 5509740 | Print band initializing method An object of the present invention is to provide a print control method capable of increasing a printing speed by preventing the drop of the printing speed in line feed without increasing an economical burden. Disclosed is a print control method of carrying ou... | 04/23/1996 |
| 5415479 | Postal bar code printing with engraved character impact printer An impact printing device for printing postal bar code patterns on an information carrier. The patterns are a combination of parallel tall and short bars separated by spaces. The type elements are attached to a movable type carrier, each element comprised... | 05/16/1995 |
| 5383399 | Zero hammer adjustment drum printer control technique A method and apparatus for controlling the adjustment of printer hammers which impact against an associated moveable member on which characters are present. Each hammer includes a coil which is energized at the appropriate time, taking into consideration ... | 01/24/1995 |
| 5315928 | Band line printer with grooved platen An impact printer has a print band moving longitudinally around pulleys with one side of the band moving in contact along a rigid platen and the other side having engraved characters presented along a print line of a print medium (e.g. paper and ink ribbo... | 05/31/1994 |
| 5245921 | Interposer device for impact printers An interposer device for use in an impact printer for printing at condensed pitches includes an interposer plate and a striker strip attached thereto. The interposer plate is a thin spring steel plate slotted to have a plurality of chevron flexure element... | 09/21/1993 |
| 5224417 | Interposer device and striker strip assembly therefor An interposer device for an impact band line printer comprises a spring steel interposer plate member with plural chevron flexure elements etched therein so that the apexes thereof are arranged in a row across the plate. A polymer striker strip has a seri... | 07/06/1993 |
| 5212497 | Array jet velocity normalization A multi-orifice ink jet print head array (32) includes multiple drive circuits that drive respective PZTs (16) to cause ink drops to be ejected from respective orifices (28). Each drive circuit includes a voltage divider (36) having a resistor RS. | 05/18/1993 |
| 5168803 | Band line printer with grooved platen A platen for a line printer has a polymer wear resistant strip on a base support. To reduce frictional drag on the band which is in sliding engagement with the wear strip, the leading edge of the strip is slanted against the direction of motion of the ban... | 12/08/1992 |
| 5150648 | Method and apparatus for detecting print-termination in line printer A print-termination detecting apparatus and method for a line printer with which it is possible to accurately predict the termination of printing so as to shorten the paper feeding cycle and to thereby make it possible to attain higher speed printing. Bas... | 09/29/1992 |
| 5033886 | Printer A printer for printing on a print medium. A type carrier is in the form of an endless belt having a plurality of type elements on a side face. A hammer mechanism urges the type elements in the print medium into contact. The hammer mechanism extends substa... | 07/23/1991 |
| 5030020 | Wire-dot impact printer having means for detecting displacement of individual print wires A wire-dot impact printer includes a wire-dot print head having a plurality of print wires disposed therein. Each of the plurality of print wires has a distal end, and each is displaced in response to a drive signal so as to strike a printing medium with ... | 07/09/1991 |
| 4967662 | High speed printer with interposer High speed impact line printers comprise a continuously moving type carrier, such as an endless belt or band having engraved type characters movable at constant speed parallel to a row of print hammers. A print medium such as a continuous paper web and an... | 11/06/1990 |
| 4961376 | Printer A printer for printing on a print medium. A type carrier is in the form of an endless belt having a plurality of type elements on a side face. A hammer mechanism urges the type elements in the print medium into contact. The hammer mechanism extends substa... | 10/09/1990 |
| 4945828 | Pulley for driving a high performance printer A pulley for connecting a driven device, that is sensitive to speed variations, to be driven by an a.c. motor that is susceptible to speed variations, caused by power line disturbances. The pulley has a peripheral drive surface for a belt drive and two si... | 08/07/1990 |
| 4833626 | Optimizing printer throughput A method of improving printer throughput by selecting a print velocity based on the characteristics of a line to be printed. Incorporated into an application program are all available printing velocities to be used for printing. As each line to be printed... | 05/23/1989 |
| 4821639 | Control for enabling flight timing of hammers during printing A printer control apparatus provides a control circuit arrangement which enables flight timing to be performed during printing. Basically, the invention achieves this by providing flight time control means activated by a print hammer operation signal. Pre... | 04/18/1989 |
| 4801223 | Mask structure for type belt of printer A printer having a platen, a type belt having a plurality of types arranged oppositely to the platen and projected at an interval on a belt body thereof, a carriage for placing a hammer member for pressing the desired type of the type belt movably arrange... | 01/31/1989 |
| 4780015 | Impact detecting platen for a high speed impact line printer A platen assembly for an impact printer comprises the combination of an impact transducer between the backup plate and the type band of a printer and an impact isolator interposed between the transducer and the type band. The transducer comprises a strip ... | 10/25/1988 |
| 4778294 | Printer A printer comprising a printing drive gear for generating a print operation output and having a print control cam for controlling a print operation; a paper feed control cam adapted to be rotated with the printing drive gear as a unit for controlling a pa... | 10/18/1988 |
| 4764039 | Method for controlling line printers comprising a revolving type band and a print hammer bank Method for controlling line printers comprising a revolving type band (400) and a print hammer bank for precalculating the firing times of the print hammers. The type band generally comprises equidistantly spaced scannable time marks (402) and a reference... | 08/16/1988 |
| 4759647 | Dual pitch impact printer A printer for printing both standard pitch and condensed pitch characters which includes print hammer faces which have a single wide section for standard pitch characters and a double wide section for printing condensed pitch characters. Using this hammer... | 07/26/1988 |
| 4753544 | Multi-color plural belt printer with sliding hammer A printer comprises a plurality of type belts each having a variety of types thereon, turning means for driving the type belts, coloring means for applying inks of different colors to the type belts, hammer means for pressing the types against a sheet of ... | 06/28/1988 |
| 4743821 | Pulse-width-modulating feedback control of electromagnetic actuators The trajectory of an electromagnetic actuator is adjusted by pulse-width-modulating feedback control of the waveform which energizes the coil. As applied to actuators for impact printing, the objectives of the control scheme are to regulate the armature's... | 05/10/1988 |
| 4736679 | Band printer and print band Printing apparatus which provides full font character and dot matrix printing with an endless band having full font printing elements and dot printing elements spaced successively on the band. In order to provide the proper spacing of the characters, eith... | 04/12/1988 |
| 4665820 | Print band timing mark detector In the print band timing system described herein, the bipolar pulse generated in a sensor by the passage of a print band timing mark is applied to a discriminating circuit which compares the pulse signal with a voltage level substantially equal to the nom... | 05/19/1987 |
| 4649501 | Band printer control system architecture A printer control system uses two microprocessors and a print control for operating a plurality of print hammers in synchronism with a revolving type carrier. One microprocessor is a mechanical control processor, the print hammers are operated by a self t... | 03/10/1987 |
| 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 |
| 4596479 | Dot matrix printer The present invention relates to a dot matrix printer which makes use of multiple dot patterns distributed on the cylinder, belt, hand or drum of a line printer to provide an improved printing throughput for an all addressable line printer. In a dot-helix... | 06/24/1986 |
| 4579055 | Printer having drive and control system for metal band holding print elements A printer of the type including a platen, a bank of hammers extending in a straight line along and spaced from the platen and a continuous metal band of magnetizable material on which are mounted a plurality of print elements is provided with drive means ... | 04/01/1986 |
| 4560294 | Printer with multiple type groups A printer comprises paper feed means for feeding a sheet of print paper in a prescribed direction, a plurality of type groups arranged in tiers along the prescribed direction and each having a set of types, a hammer assembly shiftable across the tiers of ... | 12/24/1985 |
| 4546699 | Printer having drive and control system for metal band holding print elements A printer of the type including a platen, a bank of hammers extending in a straight line and spaced from the platen, a metal band on which are mounted print elements and drive means for moving the band between the platen and the hammer bank is provided wi... | 10/15/1985 |
| 4539906 | Hand-held printer A hand-held printer such as an electronic numbering machine includes a plurality of type carrying belts or a plurality of type wheels. A drive system is associated with the type carrying belts or the type wheels to rotate the type carrying belts (type whe... | 09/10/1985 |
| 4510862 | Disposable strip assembly and retention device for a line printer A strip assembly for a printing device having an endless type band frictionally driven by drive and idler pulleys between print hammers and a platen comprises a wear strip and wiper strip attached together at a common end. The wiper strip has a wiper port... | 04/16/1985 |
| 4493084 | Belt synchronous check system for a line printer A line printer which comprises a standard type-belt (1) having a plurality of character sets (2), clock (CL) marks for individual characters, and home position (HP) marks for each character set. Further, the line printer comprises a belt image memory (13'... | 01/08/1985 |
| 4489650 | Type belt printer with antifriction means To reduce the extremely high wear in steel belt printers, a revolving tape is arranged between the revolving steel belt and the platen.... | 12/25/1984 |
| 4490058 | Line printer and type carrier for use therein A 384-character type carrier for use in a line printer coupled to a computer using a 240-character type data array of Q sets of P printable characters each. The type carrier includes K sets of characters each including P printable characters and R dummy c... | 12/25/1984 |
