Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 6921155 | Electrically grounded conductive ESD shunt mechanism for fluid-ejection mechanism A fluid-ejection mechanism of one embodiment of the invention is disclosed that includes one or more electrical contacts and one or more electrically grounded electrostatic discharge (ESD) shunt mechanisms. The electrical contacts make contact with corresponding con... | 07/26/2005 |
| 5902057 | Print ribbon cartridge with re-inker assembly The ribbon cartridge includes a re-inker assembly having a pair of idler rollers defining a nip therebetween through which the print ribbon is advanced. The idler rollers have teeth intermeshing one with the other and with the print ribbon therebetween su... | 05/11/1999 |
| 5820278 | Printing ribbon feeding device This invention relates to a device (11) for the feeding of a printing ribbon (12), comprising a train of three gears having a first gear (13) arranged centrally in the train and meshed with the second (14) and with the third gear (20). The gears (13, 14, ... | 10/13/1998 |
| 5713676 | Ink ribbon cassette having flexible spacers Ink ribbon cassette having flexible spacers for insuring that the ratchet of the cassette is engaged by the teeth of the ratchet and pawl of the printer are provided. In particular, the present invention provides flexible spacers for the ink ribbon casset... | 02/03/1998 |
| 5690438 | Continuous or endless loop printing ribbon cassettes and reinking devices therefor Continuous or endless loop printing ribbon cassettes and reinking devices therefor which will control the start of reinking transfer flow and the reinking transfer flow rate from the reinking device to the continuous or endless loop printing ribbon fabric... | 11/25/1997 |
| 5676478 | Cutting system for a printing apparatus including a single notched blade A cutting system for a printing device comprises a cutting blade (58) which has a cutting surface wherein there is defined a notch (58a). The cutting system also has an anvil (60) on which a printing medium such as heat shrink material is supported during... | 10/14/1997 |
| 5667317 | Fluorescent security system for printed transaction records A fluorescent security system for retail transactions which maximizes the printed character or image life of a combination visible/fluorescent inked printing ribbon while ensuring that the fluorescent security life of the combination visible/fluorescent i... | 09/16/1997 |
| 5618118 | Impact printer and ribbon cassette A printer and ribbon cassette with gears for transmitting power from the drive motor of the printer to the ribbon cassette. Guides are provided for guiding the ribbon cassette in a direction perpendicular to the rotational axis of the gears, so that the r... | 04/08/1997 |
| 5567064 | Ribbon cartridge The present invention relates to a ribbon cartridge comprising a housing with an upper and a lower half, a ribbon received in said housing, a driving means comprising two driving gears for driving said ribbon, said driving gears rotatably supported in the... | 10/22/1996 |
| 5472286 | Ink ribbon cassette One of a ribbon feed roller (32) and a pressure roller (34) for making an endless ink ribbon (30) run is displaceable relative to the other roller thereof for facilitation of replacement of the ink ribbon, and can be locked at a withdrawn position thereof... | 12/05/1995 |
| 5466073 | Printer ribbon cartridge with re-inking reservoir and pump A ribbon cartridge for an impact printer includes a liquid ink container, a metering/transfer device such as a peristaltic pump, an ink reservoir pad, and an ink transfer roller. The metering/transfer device and a drive roller for the ribbon preferably re... | 11/14/1995 |
| 5415485 | Ribbon cartridge reloader A ribbon cartridge reloader apparatus which removes spent ribbon from a cartridge and inserts replacement ribbon into the cartridge. The ribbon cartridge reloader includes a discharge motor to pull spent ribbon from a cartridge, at least one infeed motor,... | 05/16/1995 |
| 5413424 | Ribbon cassette including an inking device A ribbon casette comprises with a cartridge, an inking device with a contact roller which maintains the ribbon between itself and a drive roller. The inking device is kept under a tangential and perpendicular pressure with respect to the drive direction o... | 05/09/1995 |
| 5403103 | Disposable ribbon cassette within a reloadable cartridge A disposable ribbon cassette is releasably received by a reloadable cartridge which is removable from a printing device. The cassette contains the ribbon and guide paths therefore. The ribbon drive is from the printing device directly or via cartridge gea... | 04/04/1995 |
| 5399033 | Re-inkable ribbon cartridge A re-inkable ribbon cartridge for use in a printing device for printing on a sheet of paper and obtaining a consistent darkness of print. The ribbon cartridge has a base member with an exit arm and an entrance arm extending from the base member with a pri... | 03/21/1995 |
| 5286122 | Ribbon cartridge with take-up arm A ribbon cartridge for a printer is provided with a take-up arm that is thin enough to fit into an extremely tight space of the printer, and has a support stub which supports the lower edge of the ribbon, an upper guide finger which guides the upper edge ... | 02/15/1994 |
| 5254193 | Ribbon assembly fixture with integral instructions and method Assembly fixtures for assembling and stuffing a ribbon into a ribbon cartridge for use with a typewriter, or a printer, comprises a base plate, stops on the base plate forming a space for receiving a ribbon cartridge, and an instruction card mounted on th... | 10/19/1993 |
| 5226740 | Ink ribbon cassette An ink ribbon cassette in which at least one of both side walls of a chamber in which an ink ribbon is accommodated is inclined as viewed in plan view relative to a ribbon portion exposed from openings formed in corresponding two arms, one extending from ... | 07/13/1993 |
| 5215391 | Ribbon cassette A ribbon cassette has an endless ribbon contained in the cavity of the cassette and the ribbon is directed by guide arms in a path past a printing station. A ribbon drive roller and a driven roller are positioned within the cavity and the drive roller has... | 06/01/1993 |
| 5215012 | Ribbon cartridge for printers A replaceable ribbon cartridge for printers is disclosed and which has a user controllable re-inking capability. The cartridge includes both an ink transfer roller and a drive roller, both of which contact the advancing ribbon during printing operations. ... | 06/01/1993 |
| 5209586 | Ribbon cartridge and printer drive system for the ribbon The ribbon cartridge includes a storage chamber for the print ribbon, openings through its top and bottom walls adjacent the storage chamber, and a stripper for maintaining the ribbon in the storage chamber likewise adjacent the openings. A ribbon drive m... | 05/11/1993 |
| 5195834 | Ink ribbon cassette An ink ribbon cassette for use in an office machine comprises: an inking roll impregnated with ink; a ribbon-drive roll for driving an ink ribbon; and a ribbon-driven roll driven by the ink ribbon. The ink is transferred from the inking roll to the ink ri... | 03/23/1993 |
| 5184903 | Stenographic machine including a disposable ribbon cartridge A compact and disposable stenographic ribbon cartridge system includes a cartridge driven by an external drive. The cartridge contains a densely-packed ribbon that is automatically inked. Under urging of the drive, the ribbon travels through an external g... | 02/09/1993 |
| 5178475 | Ribbon cassette A ribbon cassette has a first tension spring located at an exit port of a cavity of the cassette and a second tension spring located at one corner of the cassette which provides a correct tautness of the ribbon as it travels past the line of printing. The... | 01/12/1993 |
| 5174667 | Transfer printer A label printer comprises a supporting frame having a pair of side plates facing each other. A print head and a platen roller are arranged between the side plates. Above the print head is arranged a ribbon supply device for running a transfer ribbon betwe... | 12/29/1992 |
| 5145268 | Cassette containing an inked ribbon In the proposed cassette containing an endless inked ribbon, at least one pulling roller is partly supported in a rotatable manner, in at least one slot provided in a wall of the cassette, and is at least partly supported in a rotatable manner in a carria... | 09/08/1992 |
| 5114254 | Ribbon cassette having means to feed both fabric and film ribbons A ribbon cassette used for both a fabric ribbon and a film ribbon has a first slit through which a fabric ribbon is passed and a second slit through which a film ribbon is passed, the slits being provided in a wall member which partitions a downstream end... | 05/19/1992 |
| 5052833 | Self-inking continuous ribbon cartridge system A self-linking continuous ribbon cartridge is provided with an internal self-inking reservoir having a wick positioned in spaced relationship to the ribbon. The ribbon is wrapped around a drum associated with a slip clutch to provide a slight biasing forc... | 10/01/1991 |
| 5051010 | Printer and cartridge assembly therefor A printer has one or more tractor sets for continuously feeding paper along first and second paper paths. One tractor set may be pivoted between positions for feeding paper from the front or bottom of the printer along the first paper path. Where one trac... | 09/24/1991 |
| 5007750 | Replaceable inking cartridge with depletion counter There is disclosed a replaceable inking cartridge for a printer. The inking cartridge includes an arrangement for indicating when the inking medium of the cartridge has been spent. The indicating arrangement is non-resettable so that the user is prevented... | 04/16/1991 |
| 5005996 | Ribbon cartridge with endless ribbon reinking mechanism A ribbon cartridge for an endless ribbon used in high speed printers, with increased reliability due to fewer parts, is constructed from a molded casing which is rectangular in shape into which are formed a post on which a cylindrical porous ink reservoir... | 04/09/1991 |
| 4988225 | Continuous self-inking ribbon cartridge system A novel leakproof ribbon cartridge system includes an ink reservoir and wick which, together, are configured to form a closed system such that ink is constantly recirculated between the reservoir and the wick. In addition, the ribbon cartridge includes a ... | 01/29/1991 |
| 4986679 | Mechanism for detecting presence of ribbon stopper in a ribbon cassette used in a printer In a printer of the type in which printing is carried out on a recording medium with a print element through an ink ribbon interposed between the print element and a sheet or paper, a ribbon cassette accommodating therein the ink ribbon has a ribbon stopp... | 01/22/1991 |
| 4968161 | Ribbon cassette for reinking only one longitudinal half of a Mobius ribbon An endless inked ribbhon provided in a case is twisted in the form of a Mobius band. An inverting device is provided in the case for inverting the inked ribbon, and a reinking device is provided adjacent the inverting device for supplying ink to a lower h... | 11/06/1990 |
| 4961656 | Endless loop ribbon cassette with ordered storage An endless loop ribbon cassette wherein the storage of a ribbon in a ribbon cassette is effected by a belt assembly which causes the ribbon to move along a generally linear path substantially corresponding to one dimension of a storage cavity. This effect... | 10/09/1990 |
| 4955737 | Holder for a ribbon for typewriters or similar machines A holder for a ribbon for typewriters or similar machines where the holder is insertable into a receptacle. The holder must assume a firm and above all functionally correct connection with the receptacle. For this purpose two sliders with hook-shaped ends... | 09/11/1990 |
| 4948274 | Ribbon feed mechanism An improved ribbon feed mechanism having idler and drive roller assemblies, each of which uses a single roller rotatably mounted on a retainer support featuring stripping portions which strip an inked ribbon off the rollers preventing the ribbon from wrap... | 08/14/1990 |
| 4913571 | Re-inking roller and transfer roller assembly Printer ribbon cartridge (1) has a re-inking roller (3) mounted on brackets (33, 35) of a mounting member (31). A leaf panel (45) biases the re-inking roller into transfer roller (5). To prevent failures resulting from permanent deformation of the re-inki... | 04/03/1990 |
| 4900170 | Reloadable endless ribbon cassette A ribbon cassette having a casing with a releasable cover, includes a pulley mounted for rotation in the casing, key-means project beyond the casing of the cassette for engagement with an external drive, a pressure roller is rotatably mounted in the case,... | 02/13/1990 |
| 4887921 | Dot printer having means for discharging static electricity from the ink ribbon An inpact dot printer has a ribbon cassette the casing of which is made of plastic. A leaf spring is mounted in the casing so as to be resilient contact with the inked ribbon in the cassette. An element protrudes from the spring to the outside of the casi... | 12/19/1989 |
