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Class Information
Number: 355/38
Name: Photocopying > Projection printing and copying cameras > Multicolor picture > Regulating light intensity or exposure time > Including
Description: Subject matter including a photocell or photomultiplier tube and related electrical circuitry to detect the intensity of light in some part of the optical path.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 4079388 |
Illumination detecting and recording method and device therefor |
Mar. 14, 1978 |
| 4076414 |
Motion picture printing apparatus |
Feb. 28, 1978 |
| 4068943 |
Additive color printer control |
Jan. 17, 1978 |
| 4066355 |
Solid-state color-copying scanner |
Jan. 3, 1978 |
| 4050808 |
Additive color printing method and apparatus |
Sep. 27, 1977 |
| 4039258 |
Method and apparatus for making reproductions of photograhic copy negatives or the like |
Aug. 2, 1977 |
| 4030833 |
Color filter determining apparatus |
Jun. 21, 1977 |
| 4025189 |
Preparation of half-tone images |
May. 24, 1977 |
| 4017179 |
Automatic density control |
Apr. 12, 1977 |
| 4017178 |
Apparatus for detecting a malfunction in a color connecting light valve of a film printer |
Apr. 12, 1977 |
| 3985450 |
Color filter determining apparatus with indication of the color components to be balanced |
Oct. 12, 1976 |
| 3984185 |
Process and apparatus for filter value and exposure time determination in photographic color printing and enlarging |
Oct. 5, 1976 |
| RE28771 |
Translator for measuring amount of color correction for color |
Apr. 13, 1976 |
| 3947110 |
Automatic photograph printing control system |
Mar. 30, 1976 |
| 3944362 |
Method and apparatus for determining the time intensity integral of the exposure of a negative onto photographic paper |
Mar. 16, 1976 |
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