COLOR THREE DIMENSIONAL PRINTING
First Claim
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1. An extruder for use in an additive manufacturing system, the extruder comprising:
- a first port to receive a first filament of a first build material having a first color;
a second port to receive a second filament of a second build material having a second color;
an extrusion port; and
a cavity coupled in fluid communication with the first port, the second port, and the extrusion port, the cavity including one or more baffles to mix the first build material with the second build material while passing in a liquid state to the extrusion port, thereby producing a build material.
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Abstract
A variety of techniques for color mixing support a user-controllable palette of colors for use when fabricating three-dimensional objects.
90 Citations
31 Claims
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1. An extruder for use in an additive manufacturing system, the extruder comprising:
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a first port to receive a first filament of a first build material having a first color; a second port to receive a second filament of a second build material having a second color; an extrusion port; and a cavity coupled in fluid communication with the first port, the second port, and the extrusion port, the cavity including one or more baffles to mix the first build material with the second build material while passing in a liquid state to the extrusion port, thereby producing a build material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An additive fabrication system comprising:
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an extruder configured to extrude a build material at a controlled volumetric rate in a liquid state; an x-y-z positioning system configured to controllably position the extruder within a build volume; a paint head having a controllable pose, the paint head configured to apply a controlled color of paint to a surface through a nozzle; and a processor coupled in a communicating relationship with the extruder and the x-y-z positioning system and configured to fabricate a three-dimensional model in the build volume from the build material of the extruder, the processor further configured to position and orient the nozzle of the paint head toward a predetermined location on an exterior surface of the object during fabrication of the exterior surface and to apply paint having a computer controlled color at the predetermined location.
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13. A system for additive fabrication with color control, the system comprising:
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a filament of a build material; a supply of one or more color additives; an extruder having an port to receive the filament, an extrusion port, and a cavity coupling the port in fluid communication with the extrusion port; and an injector fluidly coupled to the cavity, the injector configured to inject a controllable amount of the one or more color additives from the supply into the cavity. - View Dependent Claims (14, 15, 16, 17, 18)
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19. An additive fabrication system comprising:
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a build material provided as a filament; an extruder having an port to receive the filament, an extrusion port, and a cavity that couples the port in fluid communication with the extrusion port; a motor configured to provide a force to drive the filament into the port; a heater positioned to melt the filament within the cavity; a color source adapted to deliver a color additive to the filament; a sensor positioned to detect a color of a build material exiting the extrusion port; and a controller programmed to receive data from the sensor and to control operation of the motor, the heater, and the color source to achieve a predetermined color for the build material exiting the extrusion port. - View Dependent Claims (20, 21, 22, 23, 24, 25)
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26. A method comprising:
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identifying a three-dimensional computer model of an object including at least one color on a surface thereof; identifying an inventory of available build materials; using a computer, automatically determining that the inventory of available build materials cannot be used to fabricate the object on a three-dimensional printer; and automatically suggesting a modification of the three-dimensional model into a modified three-dimensional model to a user in which the modification allows the object to be fabricated with the inventory of available build materials and the three-dimensional printer. - View Dependent Claims (27, 28, 29, 30, 31)
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Specification