Abstract A device enabling to mount repeatedly halftone negatives for each color for polychrome printing in predetermined positions on sheet film comprising a negative fixing implement capable of detachably fixing a halftone negative by means of positioning holes provided thereon, the negative fixing implement adapted to be movable in desired directions being provided on a work table for placing sheet film thereon, the amount of movement of the fixing implement actuated by longitudinal, transverse and rotary shifting mechanisms being detected by detecting mechanisms respectively, said amount of movement being memorized by memory circuits respectively, the shifting mechanisms being actuated by respective comparison circuits capable of comparing the position of the fixing implement memorized by the memory circuits with the position of the fixing implement after removal thereof thereby enabling to return the fixing implement to the memorized position thereof.
Inventors
👤 Yoshio Inoue
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-10-27 23:30
CPC Classifications
G; G03; G03F; G03F9/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
163 words
A device for mounting polychrome printing halftone negatives in predetermined positions on sheet film characterized in that a negative fixing implement capable of detachably fixing halftone negatives by means of positioning holes bored through said negatives is provided on a work table for placing sheet film thereon, the negative fixing implement being adapted to be movable on the work table by longitudinal, transverse and rotary shifting mechanisms provided with driving means respectively, shift amount detecting mechanisms being provided along the direction of the respective shifting mechanisms for electrically detecting the longitudinal, transverse and rotary movements of the negative fixing implement actuated by said shifting mechanisms, the negative mounting position of the fixing implement being memorized by memorizing the amount of movement thereof detected by the detecting mechanisms respectively, memory reversion circuits for actuating the driving means of the shifting mechanisms and the detecting mechanisms being provided thereby enabling to return automatically the fixing implement to the memorized position after its removal on memorization.
Claim 2
Independent Claim
163 words
A device for mounting polychrome printing halftone negatives in predetermined positions on sheet film characterized in that a negative fixing implement capable of detachably fixing halftone negatives by means of positioning holes bored through said negatives is provided on a work table for placing sheet film thereon, the negative fixing implement being adapted to be movable on the work table by longitudinal, transverse and rotary shifting mechanisms provided with driving means respectively, shift amount detecting mechanisms being provided along the direction of the respective shifting mechanisms for electrically detecting the longitudinal, transverse and rotary movements of the negative fixing implement actuated by said shifting mechanisms, the negative mounting position of the fixing implement being memorized by memorizing the amount of movement thereof detected by the detecting mechanisms respectively, memory reversion circuits for actuating the driving means of the shifting mechanisms and the detecting mechanisms being provided thereby enabling to return automatically the fixing implement to the memorized position after its removal on memorization.