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| Number | Title | Issue Date |
| 5803630 | Printer having an improved shuttle position sensor A dot matrix printer having a plurality of hammers forming in part a hammerbank, with a motor for driving the hammerbank, and a controller for releasing the hammers for printing on a print media. A counterbalance is mechanically linked to the hammerbank f... | 09/08/1998 |
| 4764040 | Shock stabilized, twin counter weight shuttle drive for reciprocably mounted carriages A twin counterweight, shuttle drive (11) for a reciprocably mounted dot matrix line printer carriage (13) that is shock stabilized to: (a) eliminate instability when the printer is bumped; and, (b) maintain the center point of the carriage peak-to-peak tr... | 08/16/1988 |
| 4525084 | Device for adjusting position of printing head of printer A device for adjusting the position of the printing head of a printer has a leaf spring received in a groove formed in the carrier of the printer. The spring is bent into a doglegged form such that the spring force is applied to both ends of the carrier b... | 06/25/1985 |
| 4498793 | Printer shuttle drive having castered cam followers In a printer in which a shuttle and a counterbalancing mass are driven in opposing reciprocating fashion by a rotating, generally oval-shaped cam, the cam followers which couple the shuttle and the counterbalancing mass to the cam are castered to prevent ... | 02/12/1985 |
| 4469460 | Matrix printer with optimum printing velocity A serial printer is provided which moves the printhead at optimum velocity with respect to the document being printed so as to achieve maximum throughput. Prior to the printing of each line of alphanumeric characters, the printer contains means for determ... | 09/04/1984 |
| 4437777 | Printer having plural type wheel assembly In a printer for desk calculators etc., return control means is disposed in order to control return means for resetting a carriage as well as a hammer to a starting position. When a type wheel has been shifted to a specified position in a carry direction ... | 03/20/1984 |
| 4401027 | Printing mechanism A printing mechanism is disclosed which has a cylindrical type wheel rotatably supported on a driving shaft and carrying a plural number of types arranged on it circumferential surface at regular angular intervals and protruding from the surface. For effe... | 08/30/1983 |
| 4373439 | Character ring-selecting type printer Character rings mounted on a common shaft and having a plurality of circumferential character columns thereon, are opposed by a platen including recessed portions. A recessed portion faces non-printing character columns when the platen presses against one... | 02/15/1983 |
| 4364681 | Printer having a linear motor A linear motor for driving a dot printer head includes a carriage carrying print head. The carriage is displaced by a drive system on a linear guide rail. The drive system is a linear motor having an armature wound on a support situated on the carriage. T... | 12/21/1982 |
| 4250807 | High speed printer with stain preventing member between alternately spaced hammers A printing apparatus has a motor, a character drum rotated by the rotational force of the motor, a printing paper feed mechanism operable by the rotational force of the motor, and a mechanism for shifting hammers and a stain preventing member integral wit... | 02/17/1981 |
| 4180766 | Reciprocating linear drive mechanism A printer hammer bank for a dot matrix or other type printer is reciprocated at high speed along a printing position by a low mass, low inertia servo-controlled drive. Precise control is maintained even though a positive drive structure is not used. A rec... | 12/25/1979 |
| 4051942 | Printing apparatus A printing apparatus for an electronic calculator or the like comprises a first type wheel formed with mathematical operator symbols which is fixed to a spline shaft and a second type wheel formed with digits which is slidably mounted on the spline shaft ... | 10/04/1977 |
| 3972280 | Apparatus for time sharing of horizontal and vertical advance A prime mover is connected to a drive train in a printer to provide incremental or intermittent motion to the paper and to the hammer bank in a time sharing manner wherein the output of a closed loop control mode having a switching amplifier and a feedbac... | 08/03/1976 |
| 3964592 | Printing mechanism for printing characters A printing mechanism for printing characters comprises a rotatable hammer confronting through a recording paper the surface of a character pattern bearing body having a plurality of character patterns embossed in a predetermined array on its surface; a st... | 06/22/1976 |
