William F. Semple, a dentist, was awarded the first US Patent on chewing gum in 1869. His recipe contained powdered chalk.
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| Number | Title | Issue Date |
| 7258500 | Media processing apparatus and scanner unit The media processing apparatus has a first transportation path for guiding the check, a second transportation path and a third transportation path that diverge from the first transportation path, a front scanner that is rendered along the first transportation path f... | 08/21/2007 |
| 6494631 | Printer with ribbon fold out mechanism A ribbon mechanism mounted in the lid of a printer includes a ribbon carriage pivotally coupled to the lid for folding out of the lid by virtue of its mass when the lid is open and for folding in the lid as the lid is closed. A gear train is mounted on th... | 12/17/2002 |
| 6352380 | Cassette A cassette, particularly for a printing mechanism provided with a thermal printing head, with a ribbon reel and a ribbon take-up reel, includes a housing composed of two wall portions which are spaced apart from each other, wherein the wall portions have ... | 03/05/2002 |
| 6196737 | Thermal printing mechanism For printing special symbols, particularly stamps onto letters and packages, increasingly so-called thermal transfer printing methods are used. When inserting the thin transfer ribbon (4) over the printing head (10), the ribbon (4) is frequently partially... | 03/06/2001 |
| 5863139 | Printing apparatus and a control method therefor A printing apparatus comprises a platen, a dot impact print head (23) opposite to the platen, a mask plate (40) between the platen and the print head with a paper passage between the platen and the mask plate (40), and an ink ribbon (31) between the print... | 01/26/1999 |
| 5762430 | Ribbon cassette A ribbon cassette has an ink ribbon; a case; a cover coupled to the case by hinge pins, the cover being freely opened or closed through hinge pins; a drive roller in contact with the ink ribbon for running the ink ribbon; a follower roller for pressing th... | 06/09/1998 |
| 5664895 | Printing apparatus and a control method therefor A printing apparatus comprises a platen, a dot impact print head (23) opposite to the platen, a mask plate (40) between the platen and the print head with a paper passage between the platen and the mask plate (40), and an ink ribbon (31) between the print... | 09/09/1997 |
| 5613785 | Dot impact printer having a ink ribbon loading means Disclosed is a dot impact printer wherein a ribbon cassette formed, at its both end portions, with a pair of arm portions, respectively, between which an ink ribbon is exposed, and the ink ribbon therebetween is inserted and placed between a printing head... | 03/25/1997 |
| 5580179 | Printer with ribbon mask opening mechanism A printer having ribbon mask opening mechanism is provided with a carriage, a print head, and a printing ribbon. The printer includes a ribbon mask pivotable about a shaft parallel to a feeding direction of the printing ribbon between a closed condition a... | 12/03/1996 |
| 5088846 | Printer of ribbon cassette fixed type A printer of a ribbon cassette fixed type, to which a ribbon cassette is detachably mounted, has a main body and a cassette mounting portion provided on the main body. The mounting portion has a cassette loading plate for loading the cassette thereon. The... | 02/18/1992 |
| 5015107 | Type-wheel cassette positioner for printer A type-wheel cassette accommodating a type wheel is mounted on a carriage movable along a printing line on a platen. On the carriage is mounted a holder, on which a printing hammer and a type selection mechanism are mounted. The holder has a pair of first... | 05/14/1991 |
| 4997298 | Method and apparatus for loading ink ribbon According to the present invention, a shaft cover is attached to the front end portion of a ribbon guide shaft projecting in a cantilevered state from a side face of a printer body; cores of an ink ribbon are fitted respectively on a ribbon feed shaft and... | 03/05/1991 |
| 4856923 | Ribbon shield A thin metal ribbon shield for mounting in a standard data processing printer ribbon guide. The ribbon shield has a short insert tab and a long insert tab, and is particularly designed for ease of installation and removal. The thin metal ribbon shield is ... | 08/15/1989 |