摘要:
A fluidic micro-electromechanical device includes a pressure compensating subsystem that enables the device to operate consistently in changing environmental pressure conditions. Such a fluidic micro-electromechanical device includes an actuator having an actuator cavity underneath an actuator membrane, the actuator membrane moving in response to a driving signal applied to an actuator electrode, and a pressure compensating chamber coupled to the actuator cavity.
摘要:
Methods and systems of ejecting ink drops from an inkjet printer are disclosed. The methods and systems can include a printhead with one or more stepped nozzles each with an associated entrance diameter and exit diameter. Ink can be received into the printhead and formed into ink drops in the stepped nozzles. The ink drops can each have an associated drop mass and drop speed. The stepped nozzles can be provided such that the exit diameter can independently dictate the drop mass and the entrance diameter can independently dictate the drop speed. As such, the complexity of jet design optimization is reduced.
摘要:
Methods and systems of ejecting ink drops from an inkjet printer are disclosed. The methods and systems can include a printhead with one or more stepped nozzles each with an associated entrance diameter and exit diameter. Ink can be received into the printhead and formed into ink drops in the stepped nozzles. The ink drops can each have an associated drop mass and drop speed. The stepped nozzles can be provided such that the exit diameter can independently dictate the drop mass and the entrance diameter can independently dictate the drop speed. As such, the complexity of jet design optimization is reduced.
摘要:
Methods and systems of ejecting ink drops from an inkjet printer are disclosed. The methods and systems can include a printhead with one or more tapered nozzles each with an associated taper angle and exit diameter. Ink can be received into the printhead and formed into ink drops in the tapered nozzles. The ink drops can each have an associated drop mass and drop speed. The tapered nozzles can be provided such that the exit diameter can independently dictate the drop mass and the taper angle can independently dictate the drop speed. As such, the complexity of jet design optimization is reduced.
摘要:
Methods and systems of ejecting ink drops from an inkjet printer are disclosed. The methods and systems can include a printhead with one or more tapered nozzles each with an associated taper angle and exit diameter. Ink can be received into the printhead and formed into ink drops in the tapered nozzles. The ink drops can each have an associated drop mass and drop speed. The tapered nozzles can be provided such that the exit diameter can independently dictate the drop mass and the taper angle can independently dictate the drop speed. As such, the complexity of jet design optimization is reduced.
摘要:
According to aspects of the embodiments, there is provided a method of optimizing an electro-photographic reproduction machine having a fusing subsystem and an air knife. The methods acquire at least one electro-photographic reproduction machine objective and media characteristic; and the acquired objective and characteristic are used to determine values for the pressurized air emitted from the air knife, the position of the air knife, and the rotation of the air knife relative to a fuse roll in the fusing subsystem. The methods further disclose acquiring the leading edge of the media being stripped and then using the beam strength of the media to assist in stripping the body of the sheet. The air knife can be controlled by a controller or a processor based on determined optimization parameter values that relate to objectives and media characteristics.
摘要:
In a tonerless imaging process, an inked image layer jetted on an image receptor is simultaneously transferred and fused to a recording medium. A radiation-curable material is incorporated in the image layer such that irradiation of the image layer cures the radiation-curable material therein. An ink jet printing apparatus for performing the above process is also disclosed.
摘要:
An apparatus (100) and method (700) that can control fuser temperature is disclosed. The apparatus can include an image fuser member (110) rotatably supported in the apparatus, where the image fuser member can be configured to fuse an image on media (170). The apparatus can include a heater (120) coupled to the image fuser member, where the heater can be configured to heat the image fuser member. The apparatus can include a pressure assembly (130) rotatably supported in the apparatus and coupled to the image fuser member, where the pressure assembly can be configured to exert pressure against the image fuser member. The apparatus can include a temperature sensor (140) coupled to the pressure assembly, where the temperature sensor can be configured to sense a temperature of the pressure assembly. The apparatus can include a controller (150) coupled to the heater and coupled to the temperature sensor, where the controller can be configured to adjust the temperature set point of the image fuser member based on the sensed temperature of the pressure assembly.
摘要:
An apparatus in an ink jet printer reduces the risk of clogged nozzles in ink jet printing machines by providing a negative pressure area in the vicinity of a localized high shear stress region that is located about a print head perimeter. The apparatus includes a print head protector substantially surrounds a print head, the protector having a first substantially continuous slot along a portion of a length of the protector that is upstream of the print head and a second substantially continuous slot along a portion of a length of the protector that is upstream of the first substantially continuous slot, an inlet in fluid communication with the first substantially continuous slot, the inlet enables a positive pressure air supply to be coupled to the first substantially continuous slot so air entering the inlet flows through the first slot to displace debris from media approaching the print head, and an outlet in fluid communication with the second substantially continuous slot, the outlet enables a negative pressure source to be coupled to the second substantially continuous slot so displaced debris flows into the second substantially continuous slot and out through the outlet for removal from the ink printing machine in which the print head is located.
摘要:
A method for reducing gloss variation in prints, in an electrostatic printing system having a fuser for fusing sheets having marking particles thereon, the method including transporting a first sheet to the fuser; transporting a second sheet to the fuser; and abutting a trailing edge of the first sheet to a leading edge of the second sheet prior to the trailing edge of the first sheet entering the fuser.