Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 7984902 | Sheet feeding device and image forming apparatus A sheet feeding device includes a loading portion configured to be loaded with a sheet, a lifting mechanism that lifts the loading portion in an operating state and stops the loading portion in an stopped state, a cam configured to be rotated alternately to a first ... | 07/26/2011 |
| 7240899 | Sheet feeding device and sheet processing apparatus A sheet feeding device includes an elastic support member, a following movable member disposed so as to contact an uppermost sheet of a stack of sheets stacked on a sheet tray and can follow and move in accordance with the change in the stacking amount of the sheets... | 07/10/2007 |
| 6942212 | Mechanical media top level elevator A media handling mechanism in a printing device includes an input tray for holding a stack of media sheets at a top level. The input tray includes a platform on which the stack of media sheets rests. The media handling mechanism also has a driving means coupled to t... | 09/13/2005 |
| 6168151 | Card type dispenser assembly with bottom loading A card-like article is provided with an elevator assembly that can elevate a stacked array of cards to a discharge station. The elevator assembly can be incrementally advanced by reciprocating operating rods that extends between pairs of rails. The elevat... | 01/02/2001 |
| 5584476 | Apparatus and method for feeding print media from a stack The sheet feeder includes a tray having a pusher mechanism mounted at a rear portion and a feeder mechanism mounted at a forward portion. The pusher mechanism is driven through a spring wrap clutch which includes a ratchet which engages a pawl mounted on ... | 12/17/1996 |
| 5501444 | Sheet supply apparatus The present invention provides a sheet supply apparatus comprising a lifter device for maintaining a height of an upper surface of a sheet stack supported by a sheet supporting device substantially constant by lifting or lowering the sheet supporting devi... | 03/26/1996 |
| 5441246 | Cut sheet feeder for image forming apparatus A cut sheet feeder for an image forming apparatus is basically formed of one sheet feed mechanism for picking up stacked cut sheets at a single sheet feed position, a sheet feed unit vertically movable relative to the sheet feed mechanism, a cassette deta... | 08/15/1995 |
| 4697804 | Sheet feeder for rotary printing machines A sheet feeder for rotary printing machines having a horizontally movable support for a sheet pile, stops for laterally adjusting the sheet pile and vertically disposed guide rails in a forward region of the sheet pile for engaging the leading edge of the... | 10/06/1987 |
| 4268027 | Sheet feeding apparatus A movable platform supports a stack of sheets, with at least a portion of the stack being in a predetermined feed zone where feeding apparatus engages and feeds the sheets, one-at-a-time, from the feed zone into processing machinery. Biasing means continu... | 05/19/1981 |
