| 摘要 |
Appts. for prodn. of contour positives from originals, in which areas outside the contour are completely exposed and the contour itself is exposed less by oscillating relative movement, between imaging beam and light-insensitive material, comprises a housing (7) of which the upper wall has a shoulder (8) in which is mounted a glass plate (43) with pins (46) corresponding to perforations in the positive (44). The positive is fixed on the pins and covered with a second glass plate (43) with pins (46) corresponding to perforations deflector plate (33) with pins (46a) corresponding to perforations in the negative (41) and in the unexposed film (40). The negative and film are fixed on these pins and covered with a further glass plate (42). A drive (5) causes eccentric oscillating circular movement of the deflector plate in its own plane. |
