Patent ID: 6955721
Filing Date: 2005-10-18
Classification: B41J

Abstract:
1. A metering device for providing a layer of coating liquid to a coating apparatus wherein the coating apparatus has a rotatable first roll and a rotatable second roll defining with the first roll a first nip through which a printing substrate passes, comprising: a. a rotatable third roll having a surface energy; b. a supply of coating liquid having a surface energy, the supply of coating liquid being in contact with the third roll; and c. a doctor blade for metering a layer of coating liquid onto the third roll, the doctor blade having a distal edge with a surface energy that contacts the third roll, wherein the surface energy of a portion of the distal edge adjacent a first end of the doctor blade and a portion of the distal edge adjacent a second end of the doctor blade have a surface energy that is less than the surface energy of the coating liquid.