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US 2023/0146931 A1Published application
Authentication surface feature in additive manufacturing
AssigneeHewlett-Packard Development Company, L.P.
InventorsWei Huang, Gary J. Dispoto
Life of this patent
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Abstract
A device comprises a control portion to additively manufacturing a 3D object to include a first interior portion having a first thermal history different from a second thermal history of at least second interior portions surrounding the selectable first interior portion to induce an authentication surface feature at a first exterior surface portion overlying the first interior portion.
Claims15
A non-transitory machine-readable storage medium, encoded with instructions executable by a processor, comprising:
- instructions to generate data representing a three-dimensional object model to additively manufacture a first three-dimensional object including a first interior portion having a first thermal history different from a second thermal history of at least second interior portions surrounding the selectable first interior portion to induce a first surface feature at a first exterior surface portion overlying the first interior portion.
A print control portion comprising:
- a processor programmed to additively form a 3D object including a selectable first interior portion at which at least one thermal parameter of the build material is selectably different from thermal parameters of at least second interior portions surrounding the selectable first interior portion to induce a surface authentication mark at a first exterior surface portion overlying the first interior portion, the surface authentication mark being visually distinguishable from a substantially uniform second surface feature of a second exterior surface portion surrounding the first exterior surface portion.
A method comprising:
- additively manufacturing a three-dimensional object including causing a selectable first interior portion to experience a first thermal history different from a second thermal history of at least second interior portions surrounding the selectable first interior portion to induce a first surface feature variation at a first exterior surface portion overlying the first interior portion, the first exterior surface portion being different in appearance from a second exterior surface portion overlying the second interior portions;
- and
- optically recording, and storing in memory, an image of at least one of:
- the first surface feature variation of the first exterior surface portion;
- and
- the second exterior surface portion.
3 more elements
Dependencies are inferred from the claim text.