摘要:
The present invention provides a liquid discharging method wherein there are provided a heat generating member (10) for generating thermal energy for generating a bubble in liquid, a discharge port (4) for discharging the liquid, a flow path (3) communicated with the discharge port and having a bubble generating area for generating the bubble in the liquid, a movable member (11) having a free end (11b) and capable of being displaced as the bubble grows, and a regulating portion (12) for regulating a displacement amount of the movable member, and the flow path is formed by joining a substantially flat substrate including the heat generating body and the movable member to a top plate opposed to the substrate and including the regulating portion and the liquid is discharged from the discharge port by energy generated by generation of the bubble, and further wherein, when both a volume change ratio of the bubble and a displacement volume change ratio of said movable member tend to increase, the displacement of the movable member is regulated by the regulating portion.
摘要:
The invention is vary the amount of the liquid discharged from a same discharge port, thereby realizing recording of multi gradation levels. After the discharge of a first liquid droplet (66a), a second liquid droplet (66b) is discharged while the movable member (31) is still in a displaced state. In comparison with the first liquid droplet (66a), the second liquid droplet (66b) has a larger discharge energy and a larger speed, because the moving energy of the movable member (31) and the energy consumed for the liquid flow opposite to the discharge port (18) are smaller. Thus the first and second droplets are united to form a united droplet (66d) before landing on the recording medium (150). In this manner the amount of the discharged liquid can be varied.
摘要:
The present invention provides a liquid discharging method wherein there are provided a heat generating member (10) for generating thermal energy for generating a bubble in liquid, a discharge port (4) for discharging the liquid, a flow path (3) communicated with the discharge port and having a bubble generating area for generating the bubble in the liquid, a movable member (11) having a free end (11b) and capable of being displaced as the bubble grows, and a regulating portion (12) for regulating a displacement amount of the movable member, and the flow path is formed by joining a substantially flat substrate including the heat generating body and the movable member to a top plate opposed to the substrate and including the regulating portion and the liquid is discharged from the discharge port by energy generated by generation of the bubble, and further wherein, when both a volume change ratio of the bubble and a displacement volume change ratio of said movable member tend to increase, the displacement of the movable member is regulated by the regulating portion.
摘要:
A liquid discharging head which discharges a liquid through a discharging port utilizing an energy generated by producing air bubble including side walls which are to be brought into contact with a movable member to restrict upstream growth of a bubble, thereby stabilizing liquid discharge.
摘要:
A liquid carrying method is to carry liquid by pressure exerted by the creation of air bubble, which comprises the step of using an apparatus provided with a first liquid flow path (3) for enabling the carrying liquid to flow, a second liquid flow path (4) provided with the air bubble generating area for creating air bubble, a heat generating device (2) arranged for the air bubble generating area to generate heat for the creation of the air bubble and a movable separation film (5) for separating the first liquid flow path and the second liquid flow path and the step of carrying liquid in the first liquid flow path by displacing the movable separation film, having direction regulating means for regulating the displacement direction of the movable separation film, to the first liquid flow path side by the pressure exerted by the creation of the air bubble. With the method thus structured, it becomes possible to carry liquid efficiently and discharge it from each of the discharge openings stably with high discharge force in good discharge efficiency.
摘要:
A method for the discharge of a liquid and a liquid discharge head are provided which produce stable discharge of the liquid and, at the same time, facilitate the supply of the liquid by repressing the oscillation of a movable separation membrane during the extinction of bubbles. The method comprises using a movable separation membrane for separating a first flow path communicating with a discharge port for discharging the liquid and a second flow path furnished with a bubble generating region for generating bubbles in the liquid by the use of a heating element, disposing a movable member opposed to the bubble generating region across the movable separation membrane and furnished with a free terminal in the direction of liquid discharge, causing separation between the movable separation membrane and the movable member during the contraction of the bubbles, and inducing the intrusion of the liquid therebetween.