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| Number | Title | Issue Date |
| 5456539 | Printer with dual opposing printheads A printer has dual opposing printheads which can print in tandem on two sides of paper fed along a printing plane. The dual opposing printheads can print the same information on each side of two paper sheets fed in back-to-back (two-ply) fashion, thereby ... | 10/10/1995 |
| 5351068 | Ink-jet printer carriage and paper motion overlap method and apparatus Carriage and paper motion overlap method and apparatus are described. The preferred method utilizes carriage ramp-down and unidirectional, constant-speed periods of time to advance paper via the printer's paper advancement mechanism while avoiding current... | 09/27/1994 |
| 5238315 | Printer paper feed and carriage control device A control device for a printer for printing on a paper having a print head supported on a movable carriage and a paper feeding device. The printer includes a detector for detecting the presence or absence of paper in the printer wherein a predetermined re... | 08/24/1993 |
| 5116149 | Printer for reducing printing operation time A printer comprises a sheet feeding device for starting to feed a printing sheet to the position of the next line immediately after data of one line is completely printed and deceleration of a carriage from a predetermined printing speed is started, a con... | 05/26/1992 |
| 4976555 | Serial printer control circuit enabling line feed during carriage deceleration A serial printer control circuit having a motor control section which includes a single CPU, and a circuit which is controlled by the single CPU so as to perform printing in a period other than a acceleration/deceleration period of a spacing motor and per... | 12/11/1990 |
| 4932799 | Typewriter or similar machine A typewriter or similar machine having a platen turnable by means of a ratchet and a line spacing wheel and a carriage movable along the platen by means of a pulling means, on which a typing element or push button is disposed. In accordance with the inven... | 06/12/1990 |
| 4461984 | Linear motor shuttling system A linear motor shuttling system for shuttling the print head (11) of a dot matrix line printer is disclosed. The print head (11) is supported by a pair of flexures (13, 15) such that the head is free to move back and forth along a print line. One end of t... | 07/24/1984 |
| 4376585 | Combined paper advance and ink ribbon feed system A matrix printer, having a movable print head, a paper feed and advance mechanism and an ink ribbon system, is driven by two motors; one for the print head and one for paper feeding and ribbon movement. This second motor is a reversible one and drives the... | 03/15/1983 |
| 4310256 | Printers In an extra-small sized printer of the so called serial type, which prints one character every time a type wheel is shifted by a distance corresponding to one character in the direction of the line of typing, the simplification of a driving source as well... | 01/12/1982 |
| 4279524 | Apparatus for advancing a record medium An apparatus which may be used, for example, for feeding a record medium in a printer. The apparatus includes a rotatable member having means thereon for connection to the platen of the printer, and also having teeth on the periphery thereof and a driving... | 07/21/1981 |
| 4259026 | Dot printer having concentric driving cams In a miniature printer for printing with dots on printing paper, concentrically mounted driving cams provide both horizontal and vertical motions which synchronize the reciprocating action of the printing head mechanism with the paper feed and ink ribbon ... | 03/31/1981 |
| 4218151 | Serial impact calculator printer A serial impact printer of the type utilizing a dot matrix print head is specifically adaptable for use as a calculator or adding machine and is characterized by utilizing a common drive source to advance the print head across the paper, advance the paper... | 08/19/1980 |
| 4176977 | Proportional carrier control and moving mechanism for electric typewriter A drive arrangement for a single element typewriter in which the element is mounted on a moving carrier, for facilitating proportional spacing incremental movements of the carrier. The carrier is bidirectionally driven by a servo motor which rotates bidir... | 12/04/1979 |
| 4046246 | Serial impact calculator printer A serial impact printer of the type utilizing a dot matrix print head is specifically adaptable for use as a calculator or adding machine and is characterized by utilizing a common drive source to advance the print head across the paper, advance the paper... | 09/06/1977 |
| 4034842 | Arrangement for driving a printing head along a printing line An arrangement for driving a printing head along a printing line of a recording medium comprises a reversible direct-current electric motor which is coupled to the head for moving the latter forwards and backwards along the printing line. The head prints ... | 07/12/1977 |
