Apparatus for forming multiple toner images in register with each other on a substrate
The apparatus comprises an endless belt (26), an imaging station (29), a plurality of developing stations (35, 36, 37, 38), and a plurality of transfer stations (40, 41, 42, 43). A controllable belt drive (56) drives the endless belt (26) along a belt path (58) through the imaging station (29), the...
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| creator | JANSSENS, ROBERT FRANS LOUISA VAN AKEN, LUC KAREL MARIA |
| description | The apparatus comprises an endless belt (26), an imaging station (29), a plurality of developing stations (35, 36, 37, 38), and a plurality of transfer stations (40, 41, 42, 43). A controllable belt drive (56) drives the endless belt (26) along a belt path (58) through the imaging station (29), the developing stations (35, 36, 37, 38) and the transfer stations (40, 41, 42, 43). A controllable substrate drive (76) drives the substrate (78) in sheet form along a substrate path (17) into synchronous contact with the endless belt (26) at the transfer stations (40, 41, 42, 43). A preformed timing mark (44) is carried on the belt (26) and a sensor (49) is provided for sensing the passage of the timing mark (44) past a sensing position (48). A control device (50) is provided for controlling the belt drive (56) to run at a constant speed and to control the speed of the belt (26) in response to the sensing of the timing mark (44). The maintenance of a constant belt speed can be more reliably assured. |
| format | Patent |
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A controllable belt drive (56) drives the endless belt (26) along a belt path (58) through the imaging station (29), the developing stations (35, 36, 37, 38) and the transfer stations (40, 41, 42, 43). A controllable substrate drive (76) drives the substrate (78) in sheet form along a substrate path (17) into synchronous contact with the endless belt (26) at the transfer stations (40, 41, 42, 43). A preformed timing mark (44) is carried on the belt (26) and a sensor (49) is provided for sensing the passage of the timing mark (44) past a sensing position (48). A control device (50) is provided for controlling the belt drive (56) to run at a constant speed and to control the speed of the belt (26) in response to the sensing of the timing mark (44). 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A controllable belt drive (56) drives the endless belt (26) along a belt path (58) through the imaging station (29), the developing stations (35, 36, 37, 38) and the transfer stations (40, 41, 42, 43). A controllable substrate drive (76) drives the substrate (78) in sheet form along a substrate path (17) into synchronous contact with the endless belt (26) at the transfer stations (40, 41, 42, 43). A preformed timing mark (44) is carried on the belt (26) and a sensor (49) is provided for sensing the passage of the timing mark (44) past a sensing position (48). A control device (50) is provided for controlling the belt drive (56) to run at a constant speed and to control the speed of the belt (26) in response to the sensing of the timing mark (44). The maintenance of a constant belt speed can be more reliably assured.</abstract><edition>7</edition><oa>free_for_read</oa></addata></record> |
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| language | eng ; fre ; ger |
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| subjects | CINEMATOGRAPHY ELECTROGRAPHY ELECTROPHOTOGRAPHY HOLOGRAPHY MAGNETOGRAPHY PHOTOGRAPHY PHYSICS |
| title | Apparatus for forming multiple toner images in register with each other on a substrate |
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