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| Number | Title | Issue Date |
| 7176649 | DC motor control apparatus and recording apparatus When torque of a DC motor is dropped down to zero at a stop position, force is generated by deformation of a member for transmitting the torque of the DC motor. The force moves the driven body which is in the stopped state, which results in a shift of the driven bod... | 02/13/2007 |
| 7078875 | DC motor control apparatus and recording apparatus When torque of a DC motor is dropped down to zero at a stop position, force is generated by deformation of a member for transmitting the torque of the DC motor. The force moves the driven body which is in the stopped state, which results in a shift of the driven bod... | 07/18/2006 |
| 4311399 | Method and apparatus for setting and varying margins and line spacing on data printers The specification discloses a method and apparatus for setting and varying margins, line spacing and printing direction of a data printing machine by a machine user before and during printing by use of a keyboard with push-button control which is coupled ... | 01/19/1982 |
| 4285606 | Arrangement for driving a printing head along a printing line An arrangement for driving the 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 print... | 08/25/1981 |
| 4244291 | Printer with a fixed and an axially movable character ring A serial printer includes two character rings having raised characters disposed therearound. Both rings rotate on a common axis for selection of characters for printing. One character ring is laterally fixed relative to the common axis; the other characte... | 01/13/1981 |
| 4181443 | Drive mechanism for a reciprocating printer carriage A printer including a print head adapted for reciprocal displacement across a print tape for effecting printing on the tape in at least one direction of the displacement is provided. The print head is engaged with a timing belt operatively coupled to a dr... | 01/01/1980 |
| 4133422 | Typing machine A simplified and compact typing machine to be incorporated in an electronic calculator has a type wheel for presenting different numerals upon rotation. The type wheel is moved along a line of digits, i.e., laterally and in the generally horizontal direct... | 01/09/1979 |
| 4084681 | Drive system for writing carriages in printing systems The invention is directed to drive systems for the writing head carriages of printing systems, particularly ink jet writing systems wherein the writing carriage is linearly moved for line printing by means of a non-reversing motor. Various connection syst... | 04/18/1978 |
| 4076111 | Registration means for printers and the like An opaque flag mounted upon a printer carriage assembly interrupts the light emmitted by a LED from reaching a phototransistor when at the left-hand margin of the paper document. The carriage starts to move and when it reaches constant print velocity, the... | 02/28/1978 |
| 4067430 | Typewriter carriage movement mechanism There is disclosed a typewriter carriage control mechanism which is used with a single element print head which is constructed and arranged for transverse movement across the typewriter in which a ratchet wheel is connected to the regular spring for movin... | 01/10/1978 |
| 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 |
| 4044882 | Apparatus for moving a printer carriage A printer carriage as for a teleprinter or a typewriter is carried on a toothed belt along a printing row, the belt being driven in forward and reverse directions by a reversible stepping motor operating without feedback. Deceleration and precise stoppage... | 08/30/1977 |
| 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 |
| 4029192 | Digital circuit for controlling the return speed of a business machine carriage A digital electrical circuit for selectively activating a clutch mechanism for controlling the return speed of a business machine carriage. A carriage speed pulse transducer provides a series of sync pulses with intervals between each sync pulse being a f... | 06/14/1977 |
| 3973662 | Acceleration control system for high speed printer An all-electronic print rate control system for a high-speed column sequential dot matrix printer, using a permutation code input signal, an input storage register with a capacity of at least three code words, for storing the input data and a print timing... | 08/10/1976 |
| 3950685 | DC motor position controller A system enables selective control of instantaneous motor armature position and, thus, the corresponding position of one or more elements driven by the motor. As utilized in a high speed printer, the system governs positioning of a printhead, enabling hig... | 04/13/1976 |
| 3935938 | Line feed mechanism for printer A line feed mechanism for use with high speed, lead screw driven printers, such as of the dot matrix type, utilizes a solenoid with a dual pivotal armature to effect the coupling of a uniquely mounted and eccentrically displaceable platen gear to a lead s... | 02/03/1976 |
