摘要:
In a liquid discharge head having a head body provided with an orifice plate having a plurality of discharge ports for discharging liquid droplets therefrom, a plurality of flow paths communicating with respective ones of the plurality of discharge ports, a liquid chamber for supplying liquid to the plurality of flow paths, and a plurality of energy generating elements disposed correspondingly to the plurality of flow paths and generating energy for discharging the liquid droplets, the orifice plate being joined to the joined surface of the head body in which the communication ports of the flow paths communicating with the discharge ports of the orifice plate are disposed, the orifice plate comprises a first member providing the core of the orifice plate and formed with apertures layer than the discharge ports at locations whereat the discharge ports are formed, and a second member covering the both surfaces of the first member and the inner surfaces of the apertures.
摘要:
A method for manufacturing a liquid discharge head comprises the steps of providing a head main body having liquid flow paths, and an aperture surface having flow path openings communicated with the flow paths; providing a discharge port plate having extrusions each on the circumference of an inside opening communicated with each of the discharge ports, being on the inner face on the side opposite to the discharge port surface provided with discharge ports for discharging liquid, and a base having a substantially flat surface. For this method, the discharge port plate is arranged in a state of these surfaces formed integrally to be in contact; bonding the aperture surface and the inner face to fit the extrusions into the flow path openings by pressing the head main body and the base in the direction of the head main body and the base approaching each other with the discharge port plate between them; and separating the base from other members. With the method of manufacture thus structure, the liquid discharge head presents an excellent discharge efficiency by the provision of the extrusions that enter the flow paths from the orifice plate. It also becomes possible to manufacture a highly reliable liquid discharge head by a simpler manufacturing apparatus in a shorter period of time at lower costs.
摘要:
A liquid discharge head having plural liquid paths and plural discharge openings is formed by joining an adhesion face of an orifice plate with an adhesion face of a head main body. The liquid paths are provided in the head main body, and the adhesion face of the head main body has apertures of the liquid paths. The adhesion face of the orifice plate has recessed portions and protruding portions. The protruding portions have a shape corresponding to the cross-sectional shape of the liquid paths, and the discharge openings are provided in the protruding portions. The protruding portions or parts thereof fit into the liquid paths, and are inserted into the liquid paths for joining the adhesion face of the orifice plate with the adhesion face of the head main body.
摘要:
A liquid discharge head having plural liquid paths and plural discharge openings is formed by joining an adhesion face of an orifice plate with an adhesion face of a head main body—The liquid paths are formed upon joining an element substrate and a ceiling substrate which comprise the head main body. Apertures of the liquid paths are provided in the adhesion face of the head main body, and a protruding portion is provided in the adhesion face of the orifice plate. The protruding portion has a shape corresponding to the cross-sectional shape of one of the liquid paths, and one of the discharge openings is provided in the protruding portion. The protruding portion or a part thereof fits into one of the liquid paths, and is inserted into the liquid path for joining the adhesion face of the orifice plate with the adhesion face of the head main body.
摘要:
A liquid discharge head is provided with discharge ports for discharging liquid, liquid flow paths communicated with the discharge ports for supplying liquid to the discharge ports, a substrate having heat generating members for creating bubbles in the liquid, and movable members facing the heat generating members and being arranged in the liquid flow paths. The movable members have a free end on the discharge port side with a specific gap with respect to the heat generating members. The movable member is fixed to the substrate above the heat generating member on the substrate.
摘要:
A method for manufacturing liquid discharge heads is provided with discharge ports for discharging liquid, liquid flow paths communicated with the discharge ports for supplying liquid to the discharge ports, a substrate having heat generating members for creating bubbles in liquid, and movable members facing the heat generating members, each being arranged in each liquid flow path, having the free end on the discharge port side with a specific gap with the heat generating member. This method comprises the steps of forming the boundary layer used for providing a gap between the movable member and the substrate above the heat generating member on the substrate, of laminating the movable member on the boundary layer so as to position the free end above the heat generating member, at the same time fixing the movable member on the substrate, and of forming the gap between the movable member and the heat generating member by use of the boundary layer. With the structure thus arranged, there is no need for the step to position the movable member with the substrate, and also, the movable portion of the movable member is separated from the substrate after the movable member is formed on the substrate and incorporated in the liquid discharge head so as to implement arranging the interior of each liquid flow path finer and more precisely.
摘要:
The invention provides a method for producing a liquid discharge head including a head main body provided with plural energy generation elements for generating energy for discharging liquid as a flying liquid droplet and plural flow paths in which the energy generation elements are respectively provided, and an orifice plate provided with plural discharge ports respectively communicating with the flow paths, wherein the orifice plate and the head main body are mutually adjoined, the method comprising a step of preparing a substrate consisting of a silicon-containing material for preparing the orifice plate a step of forming, by dry etching, plural recesses in positions on the surface of the substrate respectively corresponding to the discharge ports, with a depth larger by 5 to 50 &mgr;m than the depth of the discharge ports, a step of thinning the substrate from the reverse side thereof until the depth of the recesses becomes equal to the depth of the discharge apertures to form plural discharge ports on the substrate, thereby preparing the orifice plate constructed by forming the plural discharge ports in the substrate, and a step of adjoining the orifice plate to the head main body.
摘要:
A method for manufacturing an orifice plate used for a liquid discharge provided with discharge port for discharging liquid comprises the steps of preparing a non-conductive plate having recessed portion formed on the circumference of the flat portion corresponding to the discharge port, forming a first conductive material peelable from the non-conductive plate only in the recessed portion of the non-conductive plate, forming a plate member by plating the first conductive material with a second conductive material by electroforming method after the formation of the first conductive material, and obtaining the orifice plate having the discharge port by peeling off the plate member from the non-conductive plate. With the method thus arranged, it is possible to materialize the same precision as in the glass mask used for photolithography, and make the variation of orifice areas smaller for the formation of highly densified orifices.
摘要:
Patterning is performed to thermal oxide films 12a and 12b formed on both surface sides of a silicon substrate in which crystal orientation of a surface is (100) or (110), a liquid chamber pattern and a liquid supplying port pattern are formed, and a liquid chamber and a liquid supplying port are formed separately by anisotropically etching the silicon substrate from both surface sides at the same time. Then, a silicon nitride film is deposited with a low pressure chemical vapor deposition to both surface sides of the silicon substrate and all faces of the liquid chamber and the liquid supplying port which are formed by etching. As a result, when the silicon substrate is used for a top plate, stiffness of the top plate is improved, design freedom of the liquid chamber and the liquid supplying port is increased, misalignment is prevented in bonding to the substrate, degradation of ejecting performance is prevented, and a liquid discharge head having high preciseness and high reliability can be provided.
摘要:
A liquid ejection head cartridge includes a liquid ejecting head and a liquid container. The liquid ejection head includes an ejection outlet, a bubble generation region, and a movable member disposed faced to the bubble generation region and displaceable between a first position and a second position further from the bubble generation region than the first position. The movable member moves from the first to the second position by pressure produced by the generation of a bubble to permit expansion of the bubble more in a downstream side closer to the ejection outlet. The liquid container includes a substantially prism-like outer wall provided with a substantial air vent portion and having a corner, and an inner wall having a prism-like shape with outer surfaces substantially equivalent to inside surfaces of the outer wall and having a corner portion corresponding to the corner of the outer wall, the inner wall being separable from the outer wall and defining a liquid accommodating portion for containing liquid, the inner wall further having a liquid supply portion for supplying the liquid out of the liquid accommodating portion to the liquid ejection head. The inner wall has a thickness which is smaller in the corner portion than a thickness of a central portion of the outer surfaces of the inner wall.