Abstract:
An apparatus (100) for generating three dimensional objects comprises a first scanning carriage (102). The first scanning carriage comprises a first energy source (104) to pre-heat an area of a build surface as the first scanning carriage (102) moves over the build surface.
Abstract:
A removable build module (1) to connect to a host apparatus, including a build platform (3) to support an object-to-be-built, a drive unit (5) to move the build platform, a memory (13) to receive and store build parameters, and an interface circuit (11) to communicate the build parameters to the host apparatus.
Abstract:
A three-dimensional object may be generated. Energy may be applied to a layer of build material to cause a first portion of the layer to coalesce and solidify in a first pattern. A cooling agent may be selectively delivered on a second portion of the layer of the build material to reduce a temperature of the second portion in a second pattern, the first and second patterns being independent of each other.
Abstract:
An additive manufacturing device comprising a moveable housing to carry a first liquid vessel and a channel to carry liquid from a second liquid vessel to the moveable housing, wherein the moveable housing is to combine the liquid from the second liquid vessel and liquid from the first liquid vessel to form a print agent.
Abstract:
In one example In accordance with the present disclosure, a fluid ejection device is described. The fluid ejection device Includes a number of nozzles to eject fluid. Each nozzle Includes multiple firing chambers to hold fluid. The multiple firing chambers are separated: by a chamber partition. Each nozzle also includes a shared nozzle orifice in a substrate through which to dispense fluid. Each nozzle also Includes multiple ejectors, at least one ejector disposed in each firing chamber, in a common channel of the nozzle, fluid from the multiple firing chambers Is mixed, A height of the common channel is defined by the substrate and the chamber partition and is less than a width of the shared nozzle orifice.
Abstract:
A printer is disclosed. The printer comprises a resistive load and a control system. The control system is to control the resistive load. The control system is to determine a resistance value of the resistive load. The control system is to determine a voltage transition mode for transitioning the voltage applied across the resistive load to a target voltage value depending on the resistance value. The control system is to transition the voltage applied across the resistive load to the target voltage value according to the determined voltage transition mode.
Abstract:
According to one example there is provided a method for three-dimensional printing. The method comprises forming a pile of build material on a heatable plate adjacent a spreader, heating the pile of build material by contact with the heatable plate, and spreading the heated pile of build material on a support platform.
Abstract:
A method of forming a three-dimensional object includes detecting, with a thermographic camera, a temperature of a control point within at least one zone of the build material bed, and adjusting a power level supplied to at least one of the lamps of the array of lamps if the detected temperature of the control point of the at least one zone of the build material bed is not equal to a set temperature.
Abstract:
In one example, an additive manufacturing system. An unsealed air supply enclosure for clean air is maintained at a first pressure above an ambient air pressure to inhibit unfiltered ambient air from leaking into the enclosure. An unsealed processing chamber is maintained at a second pressure below the ambient air pressure to inhibit processing chamber air from leaking out of the processing chamber. An air pathway is disposed between the air supply enclosure and the processing chamber to provide clean air from the air supply enclosure to the processing chamber.
Abstract:
In one example, a print head drop detector (202) is described. The print head drop detector (202) comprises a sampling volume and a fan (208) to cause an airflow though the sampling volume (206). Detection apparatus to detect the presence of non-gaseous material within the sampling volume is also provided.