公开(公告)号：US3621225A

公开(公告)日：1971-11-16

申请号：US3621225D

申请日：1969-06-20

Applicant: FILM EQUIPMENT MFG CO

Inventor： HANLINE JOHN V ,  CHAPIN DANIEL M

IPC: G03B27/72 ,  G03B27/73 ,  G06G7/75 ,  G06G7/48

CPC classification number: G06G7/75 ,  G03B27/72 ,  G03B27/735

Abstract: Electrical apparatus for obtaining light intensity values for printing lights for use with a production color film by comparing density values of a standard color film and light intensity values for printing lights for use with the standard color film with density values of the production color film, said apparatus having visual indicators for displaying the obtained light intensity values for the printer lights for the production color film. A computation circuit is electrically connected to the visual indicators and to a standard color film circuit and to a standard lamp level circuit and to a production color film circuit for electrically processing signals from a plurality of potentiometers in the respective circuits. The signals represent density values associated with the standard color film and the production color film and light intensity values associated printer lights for the standard color film whereby when the computation circuit is activated, numerical intensity values for the printer lights for the production color film are displayed by the visual indicators. A conversion circuit is electrically connected to the computation circuit for producing signals in selected increments of printer light intensities.

公开(公告)号：US3631234A

公开(公告)日：1971-12-28

申请号：US3631234D

申请日：1969-02-24

Applicant: FILM EQUIPMENT MFG CO

Inventor： HANLINE JOHN V ,  CHAPIN DANIEL M

IPC: G03B27/73 ,  G06G7/75 ,  G06G7/48 ,  G01J3/46

CPC classification number: G03B27/735 ,  G06G7/75

Abstract: Electrical apparatus for obtaining density values for a filter pack for use with a production color film by comparing density values of a standard color film and its filter pack with the production color film, said apparatus having visual indicators for displaying the obtained net density values for the filter pack for the production color film. A computation circuit is electrically connected to the visual indicators and to a standard color film circuit and to a pack control circuit and to a production color film circuit for electrically processing signals from a plurality of potentiometers in the respective circuits. The signals correspond to density values associated with the respective item recorded therein whereby when the computation circuit is activated, numerical density values for the filter pack for the production color film are displayed by the visual indicators.