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| Number | Title | Issue Date |
| 5230283 | Print hammer position control device A print hammer is moved toward a printwheel and impinges thereon to thus make a character impression on a sheet of paper supported on a platen. The print hammer is moved in accordance with rotations of a cam which in turn is rotated by a motor. An encoder... | 07/27/1993 |
| 5183344 | Quiet impact printer mechanism An improved quiet impact printer mechanism for use with a typewriter or printer which includes a print hammer having a high effective mass at the print point for impacting a character pad against an ink ribbon, paper and a platen at a relatively low veloc... | 02/02/1993 |
| 4483249 | Hammer lock releasing mechanism for a printing device A printing device comprises a rotary type wheel provided on its outer surface with a plurality of types disposed at equal angular intervals and in at least one column, a printing hammer head disposed confronting said type wheel and undergoing displacement... | 11/20/1984 |
| 4454809 | Print hammer mechanism A print hammer mechanism 10 includes a plurality of parallel print hammers positioned for sliding movement within slots 20a-i, 22a-i in the walls 16, 18 of a frame 12. The selective energization of one of a plurality of magnets 61a-i draws the correspondi... | 06/19/1984 |
| 4393769 | Electrostatic clutch-operated printing mechanism An impact printing mechanism is disclosed having an electrostatic clutch assembly, including a rotatively mounted semiconductive coated drum and a conductive band wrapped around the circumference thereof. The printing mechanism includes a printing hammer ... | 07/19/1983 |
| 4326459 | Hammer lock releasing mechanism for a printing device A printing device comprises a rotary type wheel provided on its outer surface with a plurality of types disposed at equal angular intervals and in at least one column, a printing hammer head disposed confronting said type wheel and undergoing displacement... | 04/27/1982 |
| 4189246 | Variable print-hammer control for on-the-fly-printing A rotatable print disc is mounted on a carrier which traverses along the print line. The disk is moved from each character position to the next by the shortest distance and it is stopped at the time of printing. The carrier is moved from one print positio... | 02/19/1980 |
| 4008662 | Printer ribbon drive apparatus A hammer is movable to strike paper against a rotatable type member through a ribbon for printing. The hammer is moved for printing by a rotary shaft formed with a projection which engages with the hammer upon rotation of the shaft. A rockable ribbon guid... | 02/22/1977 |
