...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 |
| 7392982 | Accumulator for sheet handling apparatus A sheet feeder for feeding sheets one-at-a-time along a path having: a feeder/separator for engaging the sheets and feeding them one-at-a-time along the path whilst remaining sheets not being fed along the path are halted by the separator; and a clearance mechanism ... | 07/01/2008 |
| 7380790 | Trailing edge rotating deflector with center passage for sheet handling apparatus A sheet handling apparatus for feeding a sequential plurality of sheets having a sheet feed path for guiding sheets in a sheet feeding direction through the apparatus, the apparatus comprising rollers for driving sheets along the sheet feed path, and a trailing edge... | 06/03/2008 |
| 7306220 | Movable sheet guide An accumulator apparatus for paper collations having an accumulation chamber for receiving sheet material, the chamber defined by a fixed guide on one side, a movable guide on the other side and a movable stop member at one end. Rollers are included for driving the ... | 12/11/2007 |
| 7300049 | Feed of sheet material in a feeder/separator A sheet feeder for feeding sheets one-at-a-time along a path is disclosed having: means for storing a plurality of sheets; a feeder/separator comprising feeding means for engaging the sheets and feeding them from the means for storing and a separator for engaging sh... | 11/27/2007 |
| 7269881 | Variable alignment handle A handle for attachment to a rotational shaft, the handle comprising a lever handle, for attachment to the rotational shaft for aiding application of torque to the shaft, and an alignment boss, separate from the lever handle, for attaching the lever handle to the sh... | 09/18/2007 |