Abstract: According to an example, a printhead storage device comprises a printhead pocket to receive a printhead, a receptacle with an interior chamber wherein printing fluid is provided, and a fluid interconnect device comprising a fluid path with the interior chamber. Upon insertion of a printhead to the pocket, the fluid interconnect device is connected to the printhead, thereby providing a fluid connection between the printhead and the interior chamber and wherein the printhead is not operable when inserted in the printhead pocket.

Abstract: Example methods for the maintenance of printheads are provided, the printheads comprising a reservoir containing a printing fluid with particles in suspension, and a nozzle plate. Example methods may comprise capping the nozzle plate of the printhead, and rotating the capped printhead. Example maintenance devices for printheads are also provided, comprising a support with a socket to attach a printhead to the support, a drive unit to rotate the support about a rotation axis, and a control unit connected to the drive unit to perform a predetermined rotation cycle.

Abstract: Example methods for the maintenance of printheads are provided, the printheads comprising a reservoir containing a printing fluid with particles in suspension, and a nozzle plate. Example methods may comprise capping the nozzle plate of the printhead, and rotating the capped printhead. Example maintenance devices for printheads are also provided, comprising a support with a socket to attach a printhead to the support, a drive unit to rotate the support about a rotation axis, and a control unit connected to the drive unit to perform a predetermined rotation cycle.

Abstract: Example methods for the maintenance of printheads are provided, the printheads comprising a reservoir containing a printing fluid with particles in suspension, and a nozzle plate. Example methods may comprise capping the nozzle plate of the printhead, and rotating the capped printhead. Example maintenance devices for printheads are also provided, comprising a support with a socket to attach a printhead to the support, a drive unit to rotate the support about a rotation axis, and a control unit connected to the drive unit to perform a predetermined rotation cycle.

Abstract: Example methods for the maintenance of printheads are provided, the printheads comprising a reservoir containing a printing fluid with particles in suspension, and a nozzle plate. Example methods may comprise capping the nozzle plate of the printhead, and rotating the capped printhead. Example maintenance devices for printheads are also provided,comprising a support with a socket to attach a printhead to the support, a drive unit to rotate the support about a rotation axis, and a control unit connected to the drive unit to perform a predetermined rotation cycle.

Abstract: Methods and apparatus to control a heater associated with a printing nozzle are disclosed. A method comprising controlling a heater associated with a printing nozzle to reduce a heat output of the heater based on a determination that the printing nozzle is outside a print area and printing an image on a substrate using other printing nozzles while the heat output of the heater is reduced.

Abstract: A system for monitoring ink flow is disclosed. In one embodiment, the system includes a printhead configured to perform a priming event, a heating element, a sensor configured to measure the temperature of a printhead die at a plurality of times, and a processor configured to determine the success of a priming event by comparing an actual cooling rate to a threshold cooling rate.

Abstract: Various embodiments and methods relating to wiping of a print head are disclosed.

Abstract: A system for monitoring ink flow is disclosed. In one embodiment, the system includes a printhead configured to perform a priming event, a heating element, a sensor configured to measure the temperature of a printhead die at a plurality of times, and a processor configured to determine the success of a priming event by comparing an actual cooling rate to a threshold cooling rate.

Abstract: Various embodiments and methods relating to wiping of a print head are disclosed.

Abstract: The present invention is embodied in a system and method for optimizing the temperature operating range for a thermal inkjet printhead using pigmented ink over large print swaths. The printhead assembly includes connection and processing circuitry, a printhead body, ink channels, a substrate, such as a semiconductor wafer (commonly referred to as a die), a nozzle member and a barrier layer located between the wafer and nozzle member. The nozzle member has heating elements in arrays, as well as plural nozzles coupled to respective ink channels and is secured at a predefined location to the printhead body with a suitable adhesive layer. The printhead also includes a controller, which can be an integrated circuit processor, a printer driver, firmware or the like for controlling an increase in the mean temperature of the die through a feedback loop.

Abstract: To decrease the total time required for feeding an inkjet printing medium to print an image, swath heights are reduced to values that depend on overall image height. A processor in the printer works out the swath height that just corresponds to an integral number of print-medium advances, over the total height of the image; and then prints the image using this swath height. This strategy optimizes throughput by minimizing the time occupied in advancing the print medium and in adjusting the print-medium position.

Abstract: An inkjet device comprising a printhead and a media advance mechanism, the printhead being arranged to print swaths aligned in a first direction, each swath having a width in a second direction substantially perpendicular to said first direction, said media advance mechanism being arranged to feed a print medium relative to said print head to position said swaths in the second direction on the print medium, the device being arranged to print an image having a length in said second direction and comprising a plurality of swaths spaced apart in said second direction, said device being further arranged to reduce the width of one or more of said plurality of swaths in dependence upon said image length in order to reduce the total time to feed said print medium.

Abstract: The present invention is embodied in a system and method for optimizing the temperature operating range for a thermal inkjet printhead using pigmented ink over large print swaths. The printhead assembly includes connection and processing circuitry, a printhead body, ink channels, a substrate, such as a semiconductor wafer (commonly referred to as a die), a nozzle member and a barrier layer located between the wafer and nozzle member. The nozzle member has heating elements in arrays, as well as plural nozzles coupled to respective ink channels and is secured at a predefined location to the printhead body with a suitable adhesive layer. The printhead also includes a controller, which can be an integrated circuit processor, a printer driver, firmware or the like for controlling an increase in the mean temperature of the die through a feedback loop.