Abstract:
In one example, an encoder strip mounting system includes an encoder strip having a first end, a second end opposite the first end, and an intermediate part between the first end and the second end, and a retainer to prevent the intermediate part of the encoder strip from shifting lengthwise with respect to an anchor point for the retainer located within a span of the intermediate part of the encoder strip.
Abstract:
In one example, a temperature control system for a spreader roller in an additive manufacturing machine includes: a first duct to carry air to an air passage through the roller; a second duct to carry air away from the air passage through the roller; a fan to move air through the ducts; a temperature sensor to sense a temperature of the roller; and a controller to control a flow of air through the ducts based on a temperature sensed by the sensor.
Abstract:
In one example, a powdered build material layering system for additive manufacturing includes a work area and a group of build material dispensers. One or both of the group of dispensers and the work area are movable with respect to the other of the group of dispensers and/or the work area to layer a powdered build material on to the work area in a thickness corresponding to a gap between the dispensers and the work area. The gap is small enough to choke a flow of powdered build material from a corresponding one of the dispensers in the group to the work area when there is no relative motion between the dispenser and the work area.