Viscosity control and colorant circulation for printing lens molds

Disclosed are systems including a colorant cup that is adjacent to a clich¿ª, wherein the cup includes a vent, an interior roof portion, and an air gap beneath the roof portion; a reservoir containing colorant; a feed conduit in fluid communication with the reservoir; and a return conduit in fluid c...

Full description

Saved in:
Bibliographic Details
Main Author WIDMAN MICHAEL F.,POWELL PAUL MARK,FLEMING AIDAN,RYAN JOSEPH
Format Patent
LanguageEnglish
Published 18.10.2006
Subjects
AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
BOTTLES, JARS OR SIMILAR CONTAINERS
DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISEPROVIDED FOR
INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
LINING MACHINES
LIQUID HANDLING
MEASURING
OPENING, CLOSING
PERFORMING OPERATIONS
PHYSICS
PRINTING
PRINTING MACHINES OR PRESSES
PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE
SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR
SHAPING OR JOINING OF PLASTICS
STAMPS
TESTING
TRANSPORTING
TYPEWRITERS
WORKING OF PLASTICS
WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Online AccessGet full text

Cover

More Information
Summary:Disclosed are systems including a colorant cup that is adjacent to a clich¿ª, wherein the cup includes a vent, an interior roof portion, and an air gap beneath the roof portion; a reservoir containing colorant; a feed conduit in fluid communication with the reservoir; and a return conduit in fluid communication with the cup. Also disclosed are various methods in which colorants are transferred in the disclosed systems from the reservoir to the colorant cup. The disclosed systems, colorant cups and methods are useful in the preparation of tinted contact lenses.
Bibliography:Application Number: CN2006102536