(under subclass 258) Coating apparatus having (1) a solid transfer member which separates a film of coating material from a bulk supply and applies said film to the applicator, or (2) a member for limiting the thickness of the film of coating material retained on the applicator.
(1) Note. The means for limiting the thickness of the film retained on the applicator may be, by way of example, a solid scraper edge or it may be a so-called "air-doctor" or gaseous blast which blows off the surplus coating material.
(2) Note. In every instance the doctor member regulates the thickness of the film on the applicator before the applicator contacts the base to be coated. For members which scrape excess coating material from the applicator after the completion of the coating operation, see subclass 203 of this class.
SEE OR SEARCH THIS CLASS, SUBCLASS:
63, and see the notes thereto for devices for removing surplus coating material from the coated article by means of a blast of gas.
100+, for coating apparatus having solid means contacting the base after the base is coated for the purpose of removing surplus coating material from the base.
203, for coating apparatus in which excess or surplus coating material is removed from the applicator after the applicator surface contacts the base to be coated, and see (2) Note, above. SEE OR SEARCH CLASS
101, Printing,
167+, and see the notes thereto, for devices there provided limited in function to removing the ink from the printing surface except where retained by the design-grooves.
165, Heat Exchange,
91, for a rotatable heat exchanger drum with a surface scraper of broader application.
