METHOD FOR PRINTING IRIS PATTERN ON CONTACT LENSES

A method of tinting soft contact lenses (L) uses at least one transfer-pad printer (2) including a suitable ink of the desired tint, and at least one printing block (6) carrying an iris pattern. The contact lenses are attached to lens mounts (14), preferably by being shrunk onto curved heads (18) of...

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description A method of tinting soft contact lenses (L) uses at least one transfer-pad printer (2) including a suitable ink of the desired tint, and at least one printing block (6) carrying an iris pattern. The contact lenses are attached to lens mounts (14), preferably by being shrunk onto curved heads (18) of the mounts, and are then aligned, in turn, with the pad (4) of the transfer-pad printer (2). For each lens, the printing block (6) is inked, the pad is caused to pick up the iris pattern from the inked block, and the pad is then caused to make contact with the mounted lens, thereby transferring the iris pattern as picked up from the block to the mounted contact lens. Apparatus for carrying out the method is also described.
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The contact lenses are attached to lens mounts (14), preferably by being shrunk onto curved heads (18) of the mounts, and are then aligned, in turn, with the pad (4) of the transfer-pad printer (2). For each lens, the printing block (6) is inked, the pad is caused to pick up the iris pattern from the inked block, and the pad is then caused to make contact with the mounted lens, thereby transferring the iris pattern as picked up from the block to the mounted contact lens. 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The contact lenses are attached to lens mounts (14), preferably by being shrunk onto curved heads (18) of the mounts, and are then aligned, in turn, with the pad (4) of the transfer-pad printer (2). For each lens, the printing block (6) is inked, the pad is caused to pick up the iris pattern from the inked block, and the pad is then caused to make contact with the mounted lens, thereby transferring the iris pattern as picked up from the block to the mounted contact lens. Apparatus for carrying out the method is also described.</abstract><edition>4</edition><oa>free_for_read</oa></addata></record>
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subjects COLOUR PRINTING
CONTACT LENSES
LINING MACHINES
OPTICS
PERFORMING OPERATIONS
PHYSICS
PRINTING
PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES
PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE
SPECTACLES
STAMPS
SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURESAS SPECTACLES
TRANSPORTING
TYPEWRITERS
WORKING OF PLASTICS
WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
title METHOD FOR PRINTING IRIS PATTERN ON CONTACT LENSES
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