G - Physics – 03 – B
Patent
G - Physics
03
B
95/25
G03B 27/00 (2006.01)
Patent
CA 1159698
ABSTRACT OF THE DISCLOSURE A photographic reproportioning apparatus for changing one dimension of a two-dimension image projected on a photosensi- tive member having a main travel board supporting a sub-travel board for movement in a linear path. The boards are shielded from a light source with an opaque mask having an exposure window to expose the photosensitive member as it moves rela- tive to the window. Motion transmitting structure operates to move the sub-travel board at the same speed or less than the speed of the main travel board. The motion transmission struc- ture has an adjustable speed control bar connected to a first drive mounted on the main travel board. The first drive oper- ates to a second drive mounted on the main travel board and connected to the sub-travel board. The speed of movement of the first drive depends on the angular position of the speed control bar relative to the longitudinal path of movement of the main travel board and the speed of the main travel board. The first drive also rotates a wheel. The wheel is used with the main travel board to change the linear image to an arcuate image. The mask has a second tapered exposure window that diverges away from the axis of rotation of the wheel to pro- vide an even light exposure along the length of the exposure line. The mask with the tapered exposure window is used when the wheel and main travel board are used to make an arcuate image.
366303
Magnuson Manufacturing And Marketing Inc.
Mantha & Seaby
LandOfFree
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