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 |
| 4967238 | Cleaning performance monitor An arrangement for detecting toner or debris deposits on an imaging surface is arranged downstream from the cleaning station. The imaging surface is illuminated with a light source, a light intensity detecting sensor arrangement is provided to view the il... | 10/30/1990 |
| 4937633 | Cleaning blade defect sensing arrangement An elastomeric cleaning blade supported in cleaning relationship with the imaging surface of an electrophotographic device, for removal of residual toner on the surface, is provided with a cleaning edge having predetermined and detectable characteristics ... | 06/26/1990 |
| 4885466 | Corona wire cleaning device utilizing a position detection system A wire cleaning device has a cleaner movable for cleaning a charging wire in a corona discharger, and a motor for moving the cleaner. Whether or not the cleaner is locked somewhat in its stroke of movement is determined by signals from a position detector... | 12/05/1989 |
| 4705388 | Method and apparatus for determining when a layer of tacky material present on a cleaning member needs to be rejuvenated A method and a device are provided for determining the moment that a layer of tacky material needs to be rejuvenated. Typically, the layer is present on a cleaning member for removing contaminants such as paper dust and softened toner material from a fusi... | 11/10/1987 |
| 4465362 | Cleaning device A cleaning device for removing any residual on an image bearing member has a cleaning member held in pressure contact with the surface of the image bearing member, and means for detecting the pressure contact condition of the cleaning member.... | 08/14/1984 |
| 4099861 | Contamination sensor A contamination sensor for monitoring exhaust path of the cleaning apparatus of an electrophotographic copier/duplicator to determine a malfunction condition in the cleaning apparatus. The sensor includes a light emitting diode (LED) placed in the exhaust... | 07/11/1978 |
| 3989372 | Photoconductor cleaning stations A photoconductor member is cleaned by a rotating fiber brush. The cleaned particles are knocked from the brush by a knock-off bar causing substantial wear on the brush. To compensate for the wear, both the knock-off bar and the fiber brush are adjusted fo... | 11/02/1976 |
| 3975096 | Electrophotographic copying machines An electrophotographic copying machine with an improved means of cleaning the transfer drum to remove residual pigment uses a cleaning web and just a single driven pressure roller over which the web passes and which is arranged to press the web against th... | 08/17/1976 |
