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1. (WO2018199919) THREE DIMENSIONAL (3D) PRINTERS

Pub. No.:    WO/2018/199919    International Application No.:    PCT/US2017/029284
Publication Date: Fri Nov 02 00:59:59 CET 2018 International Filing Date: Wed Apr 26 01:59:59 CEST 2017
IPC: B29C 64/20
B29C 64/209
B33Y 30/00
Applicants: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventors: SCOFIELD, Samuel
Title: THREE DIMENSIONAL (3D) PRINTERS
Abstract:
It is disclosed a 3D printing system comprising a carriage and a carriage for 3D printing systems comprising: at least one tool to act on build material over a spreading platform wherein the carriage is movable over the spreading platform along a travel direction; and a deflector that extends from the tool and/or the carriage in at least the travel direction as to prevent build material from moving upwards.