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| Number | Title | Issue Date |
| 7234884 | Ribbon spool lock assembly A printing mechanism requires ribbon spools to be locked in place radially, and includes a pivoting ribbon tension arm that must be pivoted out of its normal operating position when ribbon is to be replaced. A ribbon spool lock assembly includes a rotating locking h... | 06/26/2007 |
| 7168871 | Ribbon takeup device and printer with ribbon takeup device The present invention reduces the peak torque of a motor used in a ribbon takeup mechanism and makes the motor, used for driving, smaller and less costly. A ribbon takeup device includes ratchet wheels (5) provided on ribbon takeup axes (4), a feed cla... | 01/30/2007 |
| 4381155 | Inked ribbon advance and reverse mechanism The present invention is an improved inked ribbon advance and reverse mechanism for use in a multiple print station printing apparatus. The improved inked ribbon advance and reverse mechanism includes a first ribbon spool and a second ribbon spool onto an... | 04/26/1983 |
| 4364680 | Ink ribbon feeder An ink ribbon feeder having a pair of rotatable ratchet wheels for driving ribbon spools. A control member rockable toward either ratchet wheel carries a ratchet wheel drive member movable on the control member for driving a respective one of the ratchet ... | 12/21/1982 |
| 4358209 | Print ribbon driving mechanism A print ribbon driving mechanism including a switching bail swingingly mounted on a reciprocatively mounted support movable between two opposite spindles carrying print ribbon spools. The spindles have ratchet teeth, and the switching bail has a pair of o... | 11/09/1982 |
| 4332491 | Device for the feed and motion reversal of the ribbon for typewriter cartridges and cartridge therefore A ribbon-feed and motion-reversal device for typewriters and the like comprises an oscillating supporting plate on which a cartridge with the spools carrying the inked ribbon is placed, the supporting plate being coupled to a driving lever driven by a cam... | 06/01/1982 |
| 4260271 | Inked ribbon advancement mechanism The present invention is an inked ribbon advancement mechanism which is used in combination with a printer having a movable print head. The printer includes a frame and a print head mechanically coupled to the frame so that it travels laterally along the ... | 04/07/1981 |
| 4244288 | Flying printer A flying printer of reduced size and weight comprises a continuously-rotating ratchet wheel for driving a printing hammer through an interposed trigger lever and a print drum rotating continuously at a speed in a fixed ratio to that of said wheel. A strik... | 01/13/1981 |
| 4242005 | Inked ribbon advance and reverse mechanism including a pawl having different size teeth The present invention is an improved pawl for use in combination with an inked ribbon advance and reverse mechanism which includes a plate member, a pair of ribbon spools which are disposed on the surface of the plate member and are mechanically coupled t... | 12/30/1980 |
| 4214838 | Advance and transfer mechanism for inked ribbon or the like Two arms carry two pawls each. One pawl of each arm engages one ratchet wheel and, alternately, the other pawl of each arm engages another ratchet wheel when the arms are moved at the end of the travel of a ribbon. The ratchet wheels carry ribbon spools. ... | 07/29/1980 |
| 4205923 | Ink ribbon feed mechanism A mechanism for feeding an ink ribbon comprises a pair of ratchet wheels for taking up the ink ribbon, a feed pawl for rendering an intermittent movement to said ratchet wheels, a lever for preventing the backward movement of said ratchet wheels, a revers... | 06/03/1980 |
| 4175876 | Drive mechanism for printer A printer including a printing head adapted for reciprocal displacement across a printing tape for effecting printing on the tape in at least one direction of reciprocation is provided. The printer includes a lever pivoted on a frame and adapted to recipr... | 11/27/1979 |
| 4083444 | Removable cartridge for an inked ribbon and ribbon feed mechanism for printing machines An inked ribbon cartridge is removably mountable in a printing machine of the type comprising a support for the cartridge, two transport elements engageable with two spools, respectively, of the cartridge around which the ribbon is wound, two sensing elem... | 04/11/1978 |
| 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 |
