Printing head assembly

Details Printing head assembly Printing head assembly

1977-12-23

1979-05-22

Wintercorn, Richard A.

Photocopying

Contact printing

Machine

226 86, 352224, 355 48, G03B 2710

Patent

active

041556461

ABSTRACT:
A printing head assembly is disclosed for use in a contact film printer for exposing raw stock film with a preprint film or negative. The printing head assembly includes an aperture jaw through which light is projected onto the film strips to transfer the images from the preprint film onto the raw stock. The printing head is adapted to be mounted with the aperture jaw adjacent a drive sprocket for driving the film webs past the aperture in a contact relationship and at a predetermined rate. The edge of the preprint film strip opposite the drive sprocket is supported by a shoulder or idler ring rotatably mounted within the printing head by a stationary support shaft. The support shaft is mounted with its axis extending at a small angle with respect to the horizontal. The rotating shoulder thus rotates in a plane offset from the vertical to permit sufficient clearance for the printing light beam to be projected through the printing aperture.

REFERENCES:
patent: 3471232 (1969-10-01), Morris

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