Patent ID: 11904548
Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Field: Other special machines (Mechanical engineering)
Classification: CPC B  Y | IPC B

Claim 12:
13. A method for operating a three dimensional (3D) printer, comprising:
adjusting a feeder on each of a plurality of vessels to select a composition of a build material in a conveying system;
blending the build material from each of the plurality of vessels in the conveying system as the build material is conveyed to a dispensing vessel;
depositing a layer of the blended build material in the dispensing vessel containing an upper section, a lower section, and a building material sensor, the upper section positioned above the lower section and the building material sensor within the dispensing vessel, the upper section coupled to a separator that is coupled to the conveying system, the lower section coupled to another feeder for depositing the blended build material from the dispensing vessel to a build chamber;
depositing a layer of the blended build material in the build chamber;
selectively solidifying portions of the layer of the blended build material to form a layer of a 3D part; and
adjusting the feeder on each of the plurality of vessels to select a different composition for a succeeding layer.