Abstract: Provided are amorphous and at least partially crystalline polyetherimide compositions having a comparatively narrow particle size distribution and are particularly suited for additive manufacturing processes. The compositions comprise a population of polyetherimide particulates are characterized as having a zero-shear viscosity sufficiently low so as to achieve a coalescence of at least 0.5, and preferably of about 1.0, as characterized by the Frenkel model at a temperature less than 450° C.

Abstract: An additive manufacturing method includes: applying a first liquid slurry including a first liquid carrier and polymeric particles onto a substrate as droplets; applying a second liquid slurry including a second liquid carrier and metallic particles onto the substrate as droplets; heating the droplets to substantially evaporate the first liquid carrier from the polymeric particles and the second liquid carrier from the metallic particles; and applying radiant energy to the polymeric particles and the metallic particles to sinter the polymeric particles and the metallic particles. The first liquid slurry and the second liquid slurry are applied onto the substrate as separate slurries, and the polymeric particles and the metallic particles are nanoparticles.

Abstract: A method of controlling a maintenance operation of an inkjet printhead in an inkjet printer, the method includes providing at least one parameter of the maintenance operation as a function of humidity condition; receiving data corresponding to a current outdoor humidity condition; determining a humidity condition corresponding to the current outdoor humidity condition; and controlling the maintenance operation, wherein the at least one parameter is determined in accordance with the determined humidity condition.

Abstract: A method of controlling a maintenance operation of an inkjet printhead in an inkjet printer, the method includes providing at least one parameter of the maintenance operation as a function of humidity condition; providing a table of average humidity conditions for a geographic locale in which the printer is located; providing a current date; determining a humidity condition corresponding to the current date; and controlling the maintenance operation, wherein the at least one parameter is determined in accordance with the determined humidity condition.

Abstract: A method of adaptively controlling motion of a carriage in a carriage printer within a user's environment, the method includes controlling a motor to move a carriage of a carriage printer within a user's environment according to a first motor control profile; acquiring data relative to a motion of the carriage printer as the carriage is moved according to the first motor control profile; analyzing the acquired data relative to the motion of the carriage printer corresponding to the carriage being moved according to the first motor control profile; and controlling the motor to move the carriage of the carriage printer according to a second motor control profile.

Abstract: A carriage printer includes a printhead; a print region; a carriage configured to move the printhead back and forth across the print region; a motor for moving the carriage; a housing; a motion detector for detecting motion of the carriage printer; and a controller configured to control the motor, the controller including a motor control profile that is adaptable based upon the detected motion of the printer housing.

Abstract: A carriage printer includes a printhead; a print region; a carriage configured to move the printhead back and forth across the print region; a motor for moving the carriage; a housing; a motion detector for detecting motion of the carriage printer; and a controller configured to control the motor, the controller including a motor control profile that is adaptable based upon the detected motion of the printer housing.

Abstract: A method of adaptively controlling motion of a carriage in a carriage printer within a user's environment, the method includes controlling a motor to move a carriage of a carriage printer within a user's environment according to a first motor control profile; acquiring data relative to a motion of the carriage printer as the carriage is moved according to the first motor control profile; analyzing the acquired data relative to the motion of the carriage printer corresponding to the carriage being moved according to the first motor control profile; and controlling the motor to move the carriage of the carriage printer according to a second motor control profile.

Abstract: A method of controlling a maintenance operation of an inkjet printhead in an inkjet printer, the method includes providing at least one parameter of the maintenance operation as a function of humidity condition; providing a humidity sensor external to the inkjet printer; receiving data from a humidity sensor external to the inkjet printer, which data corresponds to a current indoor humidity condition where the inkjet printer is located; determining a humidity condition corresponding to the current indoor humidity condition; and controlling the maintenance operation, wherein the at least one parameter is determined in accordance with the determined humidity condition.

Abstract: A method of controlling a maintenance operation of an inkjet printhead in an inkjet printer, the method includes providing at least one parameter of the maintenance operation as a function of humidity condition; receiving data corresponding to a current outdoor humidity condition; determining a humidity condition corresponding to the current outdoor humidity condition; and controlling the maintenance operation, wherein the at least one parameter is determined in accordance with the determined humidity condition.

Abstract: An inkjet printhead including a drop ejector, the drop ejector includes a substrate having a surface disposed along an xy plane; a nozzle plate including a nozzle; a resistive heater disposed on the surface of the substrate proximate the nozzle, the resistive heater including a width along an x direction; and a chamber at least partially enclosing the resistive heater, the chamber including: a y axis; a pair of nonparallel opposing walls defining a variable width of the chamber along the x direction; and a chamber inlet having an inlet width along the x direction, the inlet width being less than the width of the resistive heater, wherein the variable width of the chamber gradually increases between the inlet of the chamber and an edge of the heater that is nearest to the inlet of the chamber.

Abstract: An inkjet printhead includes a printhead die including an array of nozzles disposed along a nozzle array direction and an ink feed opening that is fluidically connected to the array of nozzles; and a mounting member including: a first surface to which the printhead die is affixed; a second surface opposite the first surface; and an ink passageway from the second surface to the first surface, the ink passageway including: an elongated opening disposed on the first surface, the elongated opening being adjacent the ink feed opening of the printhead die; and a first opening and a second opening disposed on the second surface, the first and second openings being fluidically connected to the elongated opening disposed on the first surface.