Did You Know...
...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
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| Number | Title | Issue Date |
| 7289241 | Printing method with selectable fast printing mode and apparatus for same A printing method for a laser beam printer, including: generating a first video signal for printing a document image; converting the first video signal into a second video signal when a fast printing mode is selected; generating a driving signal for the fast printin... | 10/30/2007 |
| 6037968 | Scanned marking of workpieces A technique for marking pixels on workpieces by routing a scanned beam to different marking stations to mark individual pixels on the workpieces. A diffractive scan lens focuses the beam. A mark is formed on a workpiece by producing the mark and curing th... | 03/14/2000 |
| 6034980 | Laser scanning unit module A laser scanning unit module (30) including one or more laser scanning units (LSUs), a base plate on which the laser scanning units are installed, and a memory device (80) for storing data required for scanning control of each LSU. Information for control... | 03/07/2000 |
| 5610652 | Electrophotographic image recording apparatus In the electrophotographic image recording apparatus, the optical path switching mechanism switches the optical path between an image reading mode and an image recording mode. In the image reading mode, the optical path switching mechanism directs light f... | 03/11/1997 |
| 5361088 | Electrophotographic printer and method for controlling the same An electrophotographic printer capable of changing its printing speed includes a change signal generating circuit for generating a speed change signal, a head scan cycle setting circuit for setting a cycle time of a scan line of an LED array head, and a m... | 11/01/1994 |
| 5280377 | Beam scanning galvanometer with spring supported mirror A beam scanning galvanometer is disclosed which oscillates a mirror in a non-resonant mode. The moving parts of the galvanometer are made with as small a moment of inertia as possible because the mirror is oscillated in a non-resonant mode. The galvanomet... | 01/18/1994 |
| 4278982 | Optical recording device An optical recording device comprising a rigid arm carrying an optical system generating a light beam whose characteristics are varied in response and in relationship to a signal to be recorded. The arm is driven in an oscillatory movement by a motor of c... | 07/14/1981 |
