| 摘要 |
PCT No. PCT/EP85/00520 Sec. 371 Date Jun. 6, 1986 Sec. 102(e) Date Jun. 6, 1986 PCT Filed Oct. 4, 1985 PCT Pub. No. WO86/02176 PCT Pub. Date Apr. 10, 1986.This invention relates to a photographic color enlarging apparatus having a measuring device for determining the density of a test copy which, by means of the enlarging apparatus, is exposed from a reference original selected for the test-adjusting of the apparatus. Light-guiding means (15) guide light from the copying-light source of the enlarging apparatus into a measuring level outside the path of the copying rays which receives the test copies to be measured, and a photoelectric measuring sensor (25) receives measuring light reflected by the test copy. As a function of an existing density difference between the test copy and a reference copy, corrections of the exposure values are determined in such a way that a copy exposed under the new exposure conditions has the density values of the reference copy.
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