System for tinting contact lenses

Details System for tinting contact lenses System for tinting contact lenses

1988-12-27

1989-10-10

Crowder, Clifford D.

Printing

Special article machines

Bed and platen

1014071, 8507, B41F 1700

Patent

active

048724050

ABSTRACT:
A system for tinting contact lenses includes a transfer-pad printer adapted to pick up a pattern from an inked printing block and transfer the pattern to a soaked contact lens. A plurality of lens mounts, each adapted to fixedly hold a soaked lens in a defined position on a convexly curved top surface of the lens mount, are provided with reference means on their respective top surfaces to facilitate accurate placing of a soaked lens in the defined position on each lens mount prior to the pattern transfer from the transfer pad to the lens. The radius of curvature of the convexly curved top surface of each lens mount is slightly smaller than the radius of curvature of the base curve of a soaked lens placed on the lens mount to facilitate shrinking-on of the back surface of the soaked lens onto the top surface of the lens mount.

REFERENCES:
patent: 4019436 (1977-04-01), Handweiler et al.
patent: 4543882 (1985-10-01), Ryder et al.
patent: 4559897 (1985-12-01), Urrea et al.
patent: 4663186 (1987-05-01), Indyk et al.
patent: 4705307 (1987-11-01), Johnson
patent: 4716829 (1988-01-01), Wenzel
patent: 4719657 (1988-01-01), Bawa

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