| 摘要 |
<p>1350395 Multiple exposure apparatus XEROX CORP 11 June 1971 [17 June 1970] 27439/71 Headings G2A and G2H Exposure apparatus used in the production of a photo-electrophoretic image comprises a light source 27; a condenser 28; means (not shown) for moving a transparency 26 between the condenser and a projection lens 29; and three processing positions 1, 2, 3 which receive co-ordinated images from the lens 29, mirrors 32, 33 and 35, 36 being associated with the stations 1, 3 respectively, there being means (not shown) for moving an image receptor 10 through said processing positions in synchronism with the transparency movement, whereby the transparency is imaged successively at the positions 1, 2, 3 on to the same part of the receptor. In another embodiment Fig. 2, (not shown), two imaging positions (57, 58), each having only one mirror (53, 54) associated therewith, are provided. An opaque original (41) is moved past slots (45, 46) and is imaged by a projection lens (48) on to the positions (57, 58). Various magnification ratios and lens positions may be used Fig. 5, (not shown) with this embodiment. In a third embodiment Fig. 6, (not shown), a fixed original and moving lens are used. Scanning illumination may be provided if the original is opaque.</p> |
