摘要:
A fluid ejection device (100) includes a chamber (110), a first fluid channel (120) and a second fluid channel (122) each communicated with the chamber, a first peninsula (140) extended along the first fluid channel and a second peninsula (142) extended along the second fluid channel, and a first sidewall extended between the first peninsula and the chamber, and a second sidewall (152) extended between the second peninsula and the chamber. The first sidewall is oriented at a first angle (154) to the chamber and the second sidewall is oriented at a second angle (156) to the chamber such that the second angle is different from the first angle.
摘要:
Micro-fluid ejection heads and methods for extending the life of micro-fluid ejection heads. One such micro-fluid ejection head includes a substrate having a plurality of thermal ejection actuators. Each of the thermal ejection actuators has a resistive layer and a protective layer thereon. A flow feature member is adjacent the substrate and defines a fluid feed channel, a fluid chamber associated with at least one of the actuators and in flow communication with the fluid feed channel, and a nozzle. The nozzle is offset to a side of the chamber opposite the feed channel. A polymeric layer having a degradation temperature of less than about 400° C. overlaps a portion of the at least one actuator associated with the fluid chamber and positioned less than about five microns from at least an edge of the at least one actuator opposite the fluid feed channel.
摘要:
Flow features in an inkjet printhead (10). The flow features can include a plurality of first channels, each of the plurality of first channels having a first length and positioned to fluidly communicate with an ink reservoir, and each of the plurality of first channels (42) terminating in a first nozzle (22a). The flow features can further include a plurality of second channels (46), each of the plurality of second channels having a second length greater than the first length and positioned to fluidly communicate with the ink reservoir, each of the plurality of second channels terminating in a second nozzle (22b), each second nozzle being larger than each first nozzle.
摘要:
An inkjet printhead (100) including a substrate (110), a plurality of heaters (120), multiple pairs of leads (125), an ink chamber layer (130), and a nozzle plate (140) is provided. The substrate (110) has a top surface (112) and a plurality of ink channels (114) through the substrate (110) in the direction substantially vertical to the top surface (112). The heaters (120), the multiple pairs of leads (125), and the ink chamber layer (130) are disposed on the surface (112) of the substrate (110). The multiple pairs of leads (125) are electrically coupled to the corresponding heaters (120) respectively, and the heaters (120) are respectively adjacent to the corresponding ink channels (114). The ink chamber layer (130) has a plurality of ink chambers (132) which respectively expose the corresponding heaters (120) and the corresponding ink channels (114). The nozzle plate (140) is disposed on the ink chamber layer (130) and has a plurality of nozzles (142) through the nozzle plate (140).
摘要:
An electrostatic ink jet head (1) using an electrostatic actuator and its manufacturing method, comprising pressure chambers (6) communicating with ink nozzles (21) and an atmospheric pressure chamber (12) open to the atmosphere, wherein diaphragms (5) are formed on the bottom surfaces of the pressure chambers (6), a voltage is applied between the diaphragms (5) and electrodes (43) to vibrate the diaphragms (5) electrostatically so as to inject ink droplets, vibration chambers (41) communicate with a pressure compensating chamber (49), a displacement plate (16) which is displaceable toward the outside of the bottom surface of the pressure compensating chamber (49) according to a variation in atmospheric pressure is formed on the bottom surface of the pressure compensating chamber (49), the volume of the pressure compensating chamber (49) is increased or decreased according to the displacement of the displacement plate (16) so that the inside pressure of each vibration chamber (41) communicating with the pressure compensating chamber (49) is regulated to the atmospheric pressure, whereby the vibration characteristics of the diaphragms (5) can be kept constant even if the atmospheric pressure is varied so as to maintain an appropriate ink-droplet injecting operation.
摘要:
There is provided a head including a chip 10 that has a semiconductor substrate 11, heating elements 12 disposed on the semiconductor substrate 11, coating layers 14 disposed on the semiconductor substrate 11 and having nozzles 14a arranged in regions above the respective heating elements 12, and individual channels 14b each communicating with the outside and the region above the corresponding heating element 12, wherein the semiconductor substrate 11 does not have a through hole communicating with each individual channel 14b; a ink feed member 21 having a common channel 21b, the ink feed member 21 being bonded to the chip 10 in such a manner that the common channel 21b communicates with the individual channels 14b; and a top 22 disposed on the chip 10 and the ink feed member 21 so as to seal the opening of the common channel 21b.
摘要:
A fluid ejection device (100) includes a chamber (110), a first fluid channel (120) and a second fluid channel (122) each communicated with the chamber, a first peninsula (140) extended along the first fluid channel and a second peninsula (142) extended along the second fluid channel, and a first sidewall extended between the first peninsula and the chamber, and a second sidewall (152) extended between the second peninsula and the chamber. The first sidewall is oriented at a first angle (154) to the chamber and the second sidewall is oriented at a second angle (156) to the chamber such that the second angle is different from the first angle.
摘要:
A liquid ejecting head includes a plurality of arrays of liquid ejecting portions (12) each having a nozzle (18) for ejecting a droplet. The nozzle is arranged along each of an imaginary straight line (R1) and an imaginary straight line (R2) that are arranged in parallel at a distance (δ) from each other, and a distance, with respect to the direction of the imaginary straight lines (R1 and R2), between two adjacent ones of the nozzles respectively arranged on the imaginary straight line (R1) and the imaginary straight line (R2) is set to a fixed value (P). The liquid ejecting portions arrayed along at least one of the imaginary straight lines (R1 and R2) are formed so that a liquid is ejected from each of the liquid ejecting portions while being deflected to the other imaginary straight line side.