...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.
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| Number | Title | Issue Date |
| 7158341 | Tape library The invention provides a tape library wherein the accommodated number of cassette tapes can be adjusted freely. Where one or more expansion units are connected to a basic unit, when a transport mechanism is positioned within the basic unit, a control circuit section... | 01/02/2007 |
| 7145748 | Tape library The invention provides a tape library wherein the accommodated number of cassette tapes can be adjusted freely. Where one or more expansion units are connected to a basic unit, when a transport mechanism is positioned within the basic unit, a control circuit section... | 12/05/2006 |
| 7119983 | Tape library The invention provides a tape library wherein the accommodated number of cassette tapes can be adjusted freely. Where one or more expansion units are connected to a basic unit, when a transport mechanism is positioned within the basic unit, a control circuit section... | 10/10/2006 |
| 7102848 | Modular robotics system for a data cartridge library The present invention is directed to a data cartridge library that, in one embodiment, is comprised of: (a) a frame or cabinet that defines an interior space; (b) a magazine; (c) a drive bay; (d) a picker; (e) an elevator for moving the picker; and (f) a robotics mo... | 09/05/2006 |
| 6930854 | Tape library A tape library wherein a number of cassette tapes are accommodated and adjusted. One or more expansion units are connected to a basic unit. When a transport mechanism is within the basic unit, a control circuit section controls the transport mechanism by referencing... | 08/16/2005 |
| 6473371 | Media handling device having replaceable modules A media exchange device having a removable media handling device is disclosed herein. The media exchanging device may comprise a plurality of library modules, a first module, a media handling device, and an error detector. The first module is located adja... | 10/29/2002 |
| 5638348 | Automatic cartridge-exchanging apparatus and method for mini-disk player An automatic cartridge-exchanging apparatus and method is disclosed including a cartridge receiver which can be taken out from the main body of a mini-disk player, and having partitions for receiving a plurality of cartridges; a cartridge holder portion h... | 06/10/1997 |
| 5274620 | Compact disc handling mechanism A disc handling mechanism is disclosed that transfers a disc between a multi-disc storage rack and a cartridge-type disc player. The disc handling mechanism includes a dedicated cartridge that moves between the storage rack and the disc player, plus mecha... | 12/28/1993 |
| 4949324 | Disc-type recording medium transfer mechanism A disc-type recording medium transfer mechanism includes a tray transfer device movable in a first direction parallel to the direction of stacking of a plurality of trays, and also movable in a second direction perpendicular to the first direction to tran... | 08/14/1990 |