摘要:
A liquid discharging method for a liquid head discharge head, which is provided with a plurality of discharge ports for discharging liquid, a plurality of liquid flow paths communicated always with each of the discharge ports at one end, each having bubble generating area for creating bubble in liquid, bubble generating means for generating energy to create and grow the bubble, a plurality of liquid supply ports each arranged for each of the liquid flow paths to be communicated with common liquid supply chamber, and movable member supported with minute gap to the liquid supply port on the liquid flow path side, and provided with free end, the area of the movable member surrounded at least by the free end portion and both sides continued therefrom being made larger than the opening area of the liquid supply port facing the liquid flow path, comprises the step of setting a period for the movable member to close and essentially cut off the opening area during the period from the application of driving voltage to the bubble generating means to the substantial termination of isotropical growth of the entire bubble by the bubble generating means, hence making it possible to enhance the suppressing efficiency of the bubble growing component in the direction opposite to the discharge port, and the refilling characteristics of liquid simultaneously.
摘要:
A liquid discharging method for a liquid discharge head having a plurality of discharge ports and a plurality of liquid flow paths communicated always with each of the discharge ports at one end, each having a bubble generating area, a bubble generating unit, a plurality of liquid supply ports, and a movable member supported with a minute gap to the liquid supply port on the liquid flow path side, and provided with a free end. The area of the movable member is surrounded at least by the free end portion and both sides continued therefrom are made larger than the opening area of the liquid supply port facing the liquid flow path. A period for the movable member is set to close and essentially cut off the opening area during the period from the application of the driving voltage to the bubble generating unit.
摘要:
A liquid discharging method for a liquid head discharge head, which is provided with a plurality of discharge ports for discharging liquid, a plurality of liquid flow paths communicated always with each of the discharge ports at one end, each having bubble generating area for creating bubble in liquid, bubble generating means for generating energy to create and grow the bubble, a plurality of liquid supply ports each arranged for each of the liquid flow paths to be communicated with common liquid supply chamber, and movable member supported with minute gap to the liquid supply port on the liquid flow path side, and provided with free end, the area of the movable member surrounded at least by the free end portion and both sides continued therefrom being made larger than the opening area of the liquid supply port facing the liquid flow path, comprises the step of setting a period for the movable member to close and essentially cut off the opening area during the period from the application of driving voltage to the bubble generating means to the substantial termination of isotropical growth of the entire bubble by the bubble generating means, hence making it possible to enhance the suppressing efficiency of the bubble growing component in the direction opposite to the discharge port, and the refilling characteristics of liquid simultaneously.
摘要:
There is disclosed a liquid discharge head comprising: a plurality of discharge ports for discharging a liquid; a plurality of liquid flow paths whose one end portion always communicates with each of the discharge ports and which comprise a bubble generating area for generating a bubble in the liquid; bubble generating means for generating an energy to generate and grow the bubble; a plurality of liquid supply ports, disposed in the liquid flow paths, for communicating with a common liquid supply chamber; and a movable member having a free end supported at a slight gap with respect to the liquid flow path of the liquid supply port, so that recording of a high quality level image is achieved at a high speed. When a volume of a liquid droplet discharged from the discharge port is Vd, and during discharge of the liquid from the discharge port, a drawing volume from the discharge port to a liquid surface retracted to maximum into the liquid flow path is Vm, a relation of Vd>Vm is established. Therefore, meniscus returns fast, and a refill frequency can be enhanced.
摘要:
There is disclosed a liquid discharge head comprises a discharge port for discharging a liquid, a liquid flow path with one end constantly communicating with the discharge port and with a bubble generating area for generating a bubble in the liquid, a liquid supply port disposed in the liquid flow path and connected to a common liquid supply chamber for storing the liquid to be supplied to the liquid flow path, a plurality of bubble generating means, disposed in the liquid flow path, for generating the bubble in the liquid, and a plate-like movable member disposed in the liquid flow path with the side of the discharge port supported as a free end at a gap of 10 &mgr;m or less with respect to the liquid supply port on the side of the liquid flow path, and provided with a projection area larger than an opening area of the liquid supply port. The discharge port is in a linear communication state with the bubble generating means, and by driving the bubble generating means for generating the bubble with a smallest volume among the plurality of bubble generating means, the movable member seals and substantially shuts off the liquid supply port, which can increase a discharge amount ratio of liquid droplets, equalize liquid droplet discharge speeds, and raise a refill frequency after discharge.
摘要:
A liquid discharging method for a liquid head discharge head. The head has discharge ports, liquid flow paths, bubble generating areas, bubble generating means, liquid supply ports connecting the flow paths with a common liquid supply chamber, and a movable member in the flow paths supported with a minute gap to the supply ports. The area of the movable member surrounded at least by its free end and both sides continued therefrom is larger than the opening area of the supply ports. The method includes the step of setting a period for the movable member to substantially close the opening area during the period from the application of a driving voltage to the bubble generating means to the substantial termination of isotropical growth of the entire bubble by the bubble generating means. Growth of the bubble component in the direction opposite the discharge port can be suppressed, improving liquid refill.
摘要:
A first gap formation member and a fixed portion are provided on an element substrate, a movable member is formed on the first gap formation member and the fixing member, and a second gap formation member is formed thereon. The first gap formation member is removed, a wall material is coated and exposed at a pattern mask. The wall material is patterned to form the liquid flow path walls and the liquid supply ports altogether, and removing the second gap formation member, hence making it easier to form the side stopper that supports the movable member stably in a state where the displacement of the movable member is regulated to close the liquid supply port, as well as the minute gap between the movable member and the side stopper in higher precision.
摘要:
A liquid discharge head having a plurality of discharge ports to discharge a liquid, a plurality of liquid flow paths, in which an end part permanently communicates with the respective discharge ports, having a bubble generating area to generate a bubble in the liquid, bubble generating unit to generate energy to generate and grow the bubble, a plurality of liquid supply ports arranged in the plurality of liquid flow paths and communicating with a common liquid supply chamber, and a movable member, having a free end, supported with a very small gap by at least part of the liquid flow path side of the liquid supply port, the area surrounded by at least the free end part of the movable member and both side parts continuing thereto being larger than an opening area prepared in the liquid flow path of the liquid supply port, in which in a status of the movable member at rest, the part of the discharge port side of the movable member contacts with a member for forming the liquid supply port and a very small gap is placed between the part of a fulcrum side of the movable member and the liquid supply port.
摘要:
A liquid discharging head includes a discharge port and a liquid passage provided with bubble-generating means and a movable member. The liquid passage has one side which is closed, and one side which communicates with the discharge port and with a liquid supply port. The movable member has a free end on the closed side of the liquid passage and a fulcrum on the other side. The bubble-generating means is disposed on a wall of the liquid passage facing the free end of the movable member and facing a wall in which the liquid supply port is provided. The movable member is separated from the discharge port by a gap in the liquid passage corresponding to the bubble-generating means. The projected area of the movable member on the liquid supply port is larger than the opening area of the liquid supply port.
摘要:
A liquid discharging method for discharging liquid, which uses the pressure exerted at the time of creating each of bubbles in liquid in a bubble generating area, is arranged to provide two bubble generating areas for generating bubbles in such a manner as to enable these areas to face each other at least partly, hence discharging liquid by means for the pressure thus exerted in the bubble generating areas. In this way, it becomes possible to increase the amount of liquid discharged, as well as to enhance the durability of the movable members, while stabilizing the discharge of liquid from each of the discharge openings.