Patent ID: 11858215
Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Field: Other special machines (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A 3D printer, the 3D printer comprising:
a heater including a lamp extended along a longitudinal axis;
a reflector extended parallel with the longitudinal axis, wherein the reflector comprises a reflective surface positioned to direct radiant energy from the lamp toward a receiving surface to heat a build material on the receiving surface; and
a plurality of lateral baffles integrated with the reflector and spaced apart along the longitudinal axis, wherein individual lateral baffles of the plurality of lateral baffles comprise a radiant energy absorbing plate that extends laterally through the reflective surface and is positioned to absorb at least a portion of a reflection of the radiant energy reflected from the receiving surface to prevent the portion of the reflection of the radiant energy from being re-reflected by the reflecting surface back to the receiving surface; and
wherein the radiant energy absorbing plate extends around a portion of the lamp in a circumferential direction with respect to the longitudinal axis.