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| Number | Title | Issue Date |
| 7347636 | Printing control system and method for an inkjet printer A printing control system and method for an inkjet printer, wherein a carrier equipped with one or more inkjet cartridges is driven while the line feeding is being executed, and the line printing is initiated after the line feeding of the paper is completed. The pri... | 03/25/2008 |
| 5918991 | Printing apparatus and control method for pitch and motion commands A printing apparatus and control method facilitating the development of application software that can be used with different printers when the horizontal and vertical pitches of their respective mechanical transports vary. Based on a received base pitch c... | 07/06/1999 |
| 5681121 | Printer in which the amount of carriage travel can be changed for different printing types There is provided a printer comprises a first type group having a first font; a second type group having a second font; a first read only memory in which a space traveling amount corresponding to each type of the first type group has been stored; a second... | 10/28/1997 |
| 5135320 | Serial printer A serial printer comprises a movable carrier, a print head mounted on the carrier, sliders mounted to either a fixed member of the printer or the carrier and selectively slidable to a plurality of positions to select a desired print mode, a sensor mounted... | 08/04/1992 |
| 5051012 | Carriage positioning for multiple impact printing In a printing device capable of executing printing operation in a bold face print mode, provided are means for controlling a carriage so as to be stopped in a predetermined period of time before the first printing operation is executed so that an inconven... | 09/24/1991 |
| 5040910 | Printing device for the production of automatically readable script on documents In printing devices which are to print automatically readable script in particular great value is placed on an entirely accurate and clearly readable printing script because otherwise the reading devices recognize erroneous characters or the documents are... | 08/20/1991 |
| 4955733 | Printing apparatus with expanded pitch mode and underlining In order to print well balanced underlines under a character string printed at an expanded print pitch, the disclosed printing apparatus comprises an expanded pitch setting means for setting an expanded pitch mode for providing an expanded space correspon... | 09/11/1990 |
| 4942390 | Method and apparatus for generating a character image This invention relates to a method for generating character images using a font compression algorithm that reduces the storage requirements associated with low-cost, high resolution printers. An expanded character image has original print slices and dupli... | 07/17/1990 |
| 4883377 | Character pattern generator for dot matrix printer A character pattern generator for a dot-matrix type printer. A storage device stores first dot pattern data for fixed pitch printing and second dot pattern data for proportional printing where the proportional printing dot pattern data corresponding to a ... | 11/28/1989 |
| 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 |
| 4856924 | Printer According to the present invention, setting contents of a specified mode are selected in accordance with positions to which a printing head shifts, and the setting contents are set by operating switches in those positions. A switch for shifting the printi... | 08/15/1989 |
| 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 |
| 4818129 | Method for correcting bidirectional printing alignment of a serial dot printer In a method for operating a serial dot matrix printer having a print head that is reciprocated along a first direction and stopped for performing bi-directional printing on a medium that is moved in a second direction orthogonal to the first direction, co... | 04/04/1989 |
| 4789255 | Correction buffer A correction buffer for a typing system in which the correction buffer has a group of records, each record corresponding to an incremental distance on the medium which is printed upon. The records in the correction buffer contain information concerning ch... | 12/06/1988 |
| 4772142 | Document processing system A document processing system has a pitch key for generating character pitch information, an MPU for counting the character pitch information to set auto mode data in an auto mode selection memory RAM, a wheel sort memory RAM for storing printing pitch inf... | 09/20/1988 |
| 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 |
| 4758104 | Printing device The present invention relates to a printing device having a carriage and a serial-impact printing unit carried by the carriage, wherein characters are printed on a recording medium by the printing unit after the carriage has been moved to and positioned a... | 07/19/1988 |
| 4757462 | Signal processing apparatus A pattern pitch adjustment is applied to dot matrix pattern data as it is output from a CPU to a printer. The data is transferred from a DMA to the printer bit by bit, and the number of synchronizing signals output from the printer for each bit is counted... | 07/12/1988 |
| 4737924 | Dot matrix type serial printer A serial printer of a dot matrix type wherein the pitch of dots oriented in the direction in which characters are to be printed in a matrix of dots is varied in a minute amount, to thereby adjust the pitch of the characters as desired.... | 04/12/1988 |
| 4676677 | Dot pattern generating system A dot pattern generating system extracts dots with a predetermined interval with respect to a scanning direction from successive dots of a dot information pattern which is generated from a character generator, and varies a dot interval of the dot pattern ... | 06/30/1987 |
| 4674895 | Dot matrix printer control and storage device A printer capable of operating in a bidirectional printout mode by converting a print code to pattern data and using a print head in which print elements are arranged in a plurality of arrays. A buffer control is provided for controlling in a ring structu... | 06/23/1987 |
| 4669897 | Dot matrix printer capable of varying character size A dot matrix printer comprises a head comprising a plurality of printing elements, a motor for moving the head, an oscillation source for supplying pulses for driving the motor, and varying means for varying the spacing between dots printed by the head at... | 06/02/1987 |
| 4665371 | Character spacing circuit for controlling print hammer firing A circuit for controlling the firing of a print hammer so as to maintain constant intercharacter spacing during printing. The speed of a motor which moves a document in printing relationship with a printer is used to ascertain the instantaneous velocity o... | 05/12/1987 |
| 4664541 | Microprogrammed control apparatus for dot matrix serial printers A microprogrammed control apparatus for dot matrix serial printers and related printing method which allows increased horizontal resolution of the printing matrix and therefore the printing quality consistent with the restriction that no printing element ... | 05/12/1987 |
| 4655622 | Printer control apparatus In a serial printer in which character patterns for one line are image-developed in a line buffer and are printed, when the number of dots along a subscanning direction of a dot pattern obtained by expanding a standard character exceeds that of a printing... | 04/07/1987 |
| 4602880 | Dot printing device A dot printing device includes a head having a plurality of head pins, a dot driver for selectively energizing the head pins according to dot data, a character generator, and a data processing unit for causing N-bit dot data constituting designated charac... | 07/29/1986 |
| 4589785 | Printing apparatus A printing apparatus includes a printing unit, an operation panel including a plurality of switches, a first memory, and a control unit which stores the print control data corresponding to the states of the switches of the operation panel into the first m... | 05/20/1986 |
| 4573812 | Intercharacter space processing apparatus for printers An intercharacter space processing apparatus for use in a printer, comprises a receiver for receiving a print signal, a memory for storing character codes received by the receiver, a dot space control unit responsive to an intercharacter dot space signal ... | 03/04/1986 |
| 4488827 | Continuous vertical line print control system A system and method for controlling printing to allow to obtain a long vertical line which is continuous even if a reduction in height of font is produced due to the occurrence of font change between the two consecutive print lines is provided.... | 12/18/1984 |
| 4421431 | Method for dot matrix printing at selected uniform dot column spacing For use with a matrix printer, a method for printing dot columns at uniform spacing regardless of irregular print carrier motion, the column spacing selected, and the use of a low resolution pulse source. The pulse source generates control pulses at inter... | 12/20/1983 |
| 4415286 | Variable print density encoder system In a printer system in which hammers mounted along a shuttle assembly which reciprocates relative to a print paper are selectively energized to impact the paper and print dots thereon, the dot density is made variable by an encoder system responsive to th... | 11/15/1983 |
| 4408918 | Halfspace control system for electronic typewriter with correction register An electronic typewriter comprising keys 12a and an electronic control system 26 for causing a print wheel 16 to print corresponding characters at successive horizontal positions. A register 86B stores and continuously updates its storage of the last plur... | 10/11/1983 |
| 4383776 | Typewriter with carriage escape bar adjustment A business machine including a frame, a paper support mechanism and a printing mechanism for successive character printing on paper supported from the paper support mechanism is provided. One of the mechanisms is supported from the frame for guided increm... | 05/17/1983 |
| 4371274 | Apparatus for dot-matrix printing with proportional character spacing An apparatus for dot-matrix printing with proportional character spacing utilizes a conventional character generator for generating characters with fixed spacing in which a matrix storage area of equal size is assigned to each character, regardless of the... | 02/01/1983 |
| 4322173 | Half-spacing feed mechanism for marking machine A marking machine for marking metal nameplates, tags or the like. The marking machine employs a work table supported on a carriage which is moveable into contact with a marking wheel to perform a printing operation. Improved advancing means are provided f... | 03/30/1982 |
| 4321599 | High legibility multi-character dot matrix display A character generator (14) applies character columns in a standard 5×7 or similar matrix form to a multi-digit dot matrix display (12). Inhibition circuitry (33), (23) eliminates all character columns containing no character dots. Additional circuitry (1... | 03/23/1982 |
| 4286516 | Electronic control for timing hammers in impact printers An electronic system is disclosed for use in adjusting the spacing between columns of print produced by impact printers and the like. The system adjusts the spacing electronically by use of digital logic which varies the timing between high current pulses... | 09/01/1981 |
| 4278359 | Control circuit for use with a dot matrix printer A control circuit for use in conjunction with dot matrix printers which includes a command word gate which is connected to a data source to receive data signals, the command word gate generating a control circuit enabling signal in response to reception o... | 07/14/1981 |
| 4229111 | Feed mechanism for marking machine A marking machine for marking metal nameplates, tags or the like. The marking machine employs a work table supported on a carriage which is movable into contact with a marking wheel to perform a printing operation. Improved advancing means are provided fo... | 10/21/1980 |
| 4145644 | Dual stepping angle stepper motor drive A stepping motor control circuit permitting selective operation of the motor in various modes such as half or full step mode. The circuit includes a pulse generator producing pulses at a selected motor step rate. A switch means selects the step size while... | 03/20/1979 |
