摘要:
In some embodiments of the present invention, an ink supply system is provided. The system may include a first stationary fluid storage unit, a second stationary fluid storage unit coupled to the first stationary fluid storage unit and an air lung. The system may also include a collapsible fluid level bag positionable lower than nozzles of one or more print heads and a movable fluid pressure damper coupled to the fluid level bag and to the print heads. The system is configured such that when printing, ink is exposed to the ambient atmosphere only at the nozzles.
摘要:
Disclosed is an inkjet print head array with improved ink supply system. The system includes an ink manifold having at least two ink supply channels, a plurality of print head modules disposed along ink supply channels and forming the array, with each of the print head modules having at least two ink inlet ports. The ports are in fluid communication with the ink supply channels. Each of the ink supply channels supplies ink to each of the ports at a different flow rate, although the resulting ink supply flow rate is equal for each print head module.
摘要:
An ink jet print head includes a silicon ink jet chip, a print head holder, configured to carry and support the silicon chip, and a glass plate, bonded between the silicon chip and the print head holder. The ink jet chip has a coefficient of thermal expansion αs. The print head holder has a holder wall thickness, and a coefficient of thermal expansion αh that is substantially different from αs. The glass plate has a coefficient of thermal expansion αg that is substantially similar to αs, and a thickness at least as great as the holder wall thickness, whereby stress created by differential thermal expansion between the silicon chip and the holder is attenuated by the glass plate.
摘要:
A fluid ejection device includes a substrate having a fluid channel, a flexible membrane supported by the substrate and extended a length of the fluid channel, an actuator provided on a first portion of the flexible membrane, and a reinforcement member provided on a second portion of the flexible membrane such that the actuator is adapted to deflect the first portion of the flexible membrane relative to the fluid channel, and the reinforcement member supports the second portion of the flexible membrane.
摘要:
A method for reducing stress between a silicon chip and a bonded mounting structure having a coefficient of thermal expansion substantially different from a coefficient of thermal expansion of the silicon chip includes the step of bonding a thermal stress-attenuating layer between the silicon chip and the mounting structure. The thermal stress-attenuating layer has a coefficient of thermal expansion that is substantially similar to the coefficient of thermal expansion of the silicon chip.
摘要:
A fluid ejection device includes a substrate having a fluid channel including a fluid inlet and a fluid outlet, a flexible membrane supported by the substrate and extended a length of the fluid channel, an actuator provided on the flexible membrane, and a constriction provided within the fluid channel between the fluid inlet and the fluid outlet, such that the actuator is adapted to deflect the flexible membrane relative to the fluid channel, and the constriction supports the flexible membrane between the fluid inlet and the fluid outlet.
摘要:
A method for reducing stress between a silicon chip and a bonded mounting structure having a coefficient of thermal expansion substantially different from a coefficient of thermal expansion of the silicon chip includes the step of bonding a thermal stress-attenuating layer between the silicon chip and the mounting structure. The thermal stress-attenuating layer has a coefficient of thermal expansion that is substantially similar to the coefficient of thermal expansion of the silicon chip.
摘要:
A compliant cooling conduit is employed to extract heat from an inkjet print head array. The cooler conduit is implemented as a flexible conduit placed between the heat emitting surfaces. Cooling fluid pressure presses the conduit to the heat emitting parts of the print head modules. When fluid pressure is removed the conduit collapses and provides convenient access for print head service.
摘要:
Disclosed is an inkjet print head array with improved ink supply system. The system includes an ink manifold having at least two ink supply channels, a plurality of print head modules disposed along ink supply channels and forming the array, with each of the print head modules having at least two ink inlet ports. The ports are in fluid communication with the ink supply channels. Each of the ink supply channels supplies ink to each of the ports at a different flow rate, although the resulting ink supply flow rate is equal for each print head module.
摘要:
A fluid ejection device includes a substrate having a fluid channel, a flexible membrane supported by the substrate and extended a length of the fluid channel, an actuator provided on a first portion of the flexible membrane, and a reinforcement member provided on a second portion of the flexible membrane such that the actuator is adapted to deflect the first portion of the flexible membrane relative to the fluid channel, and the reinforcement member supports the second portion of the flexible membrane.