Motion picture printing machine having interchangeable film rece

Details Motion picture printing machine having interchangeable film rece Motion picture printing machine having interchangeable film rece

1980-09-11

1982-11-02

Christian, Leonard D.

Advancing material of indeterminate length

Processes

By engaging material modifications

226 53, B65H 1738

Patent

active

043569455

ABSTRACT:
A motion picture printing machine is equipped with separate printing modules for the picture track and the sound track. Each module can be removed from the machine. It is therefore possible to use one set of printing modules for printing one size of film, and then to change to a different set of printing modules for printing a different size of film.
More specifically, the machine has a vertical frame member with drive and control mechanisms that are supported on its rear side, while the removable printing modules are attached to its front side. Each printing module includes at least one driven sprocket that is carried on a sprocket drive shaft. The sprocket drive shaft is aligned concentric with, but not directly attached to, a driven shaft that is rotatably supported on the rear side of the frame member. The two plates of a friction clutch are carried on the adjacent ends of these two shafts. A means for activating the clutch is a permanent part of the machine carried on the rear side of the frame member. When a particular printing module is removed from the machine, the clutch plate associated with each driven sprocket is removed as part of the module.

REFERENCES:
patent: 2364148 (1944-12-01), Kellogg
patent: 3512693 (1970-05-01), Utsumi

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