Abstract: An element substrate is bonded to a support substrate with high positional accuracy. A manufacturing method of the liquid ejecting head includes curing a first adhesive, which is in contact with an element substrate and a support substrate, at a first temperature to perform first temporary fixing, heating a second adhesive, which is in contact with the element substrate and the support substrate, to a second temperature higher than the first temperature so as to cure the second adhesive and perform second temporary fixing and heating a third adhesive, which is in contact with the element substrate and the support substrate, to a third temperature higher than the second temperature so as to cure the third adhesive and bond the element substrate to the support substrate. An elastic modulus of the second adhesive is larger than an elastic modulus of the first adhesive at the second temperature.

Abstract: An element substrate is bonded to a support substrate with high positional accuracy. A manufacturing method of the liquid ejecting head includes curing a first adhesive, which is in contact with an element substrate and a support substrate, at a first temperature to perform first temporary fixing, heating a second adhesive, which is in contact with the element substrate and the support substrate, to a second temperature higher than the first temperature so as to cure the second adhesive and perform second temporary fixing and heating a third adhesive, which is in contact with the element substrate and the support substrate, to a third temperature higher than the second temperature so as to cure the third adhesive and bond the element substrate to the support substrate. An elastic modulus of the second adhesive is larger than an elastic modulus of the first adhesive at the second temperature.

Abstract: A liquid ejection head includes a recording element substrate including an ejection port that ejects liquid, and an energy generating element that generates energy used to eject liquid, an electric wiring substrate including wiring for transmitting electric power for driving the energy generating element, and an opening that exposes the recording element substrate, a plurality of connecting portions that electrically connect the recording element substrate and the electric wiring substrate, a recess formed between the recording element substrate and the electric wiring substrate, and at least one groove formed in the bottom of the recess corresponding to at least one part where the connecting portions are formed. The at least one groove includes a first portion formed along an arranging direction of the plurality of connecting portions, and a second portion formed in a direction intersecting with the arranging direction.

Abstract: One end portion of a connecting member 31 is connected to a first housing 1 such that the connecting member 31 is rotatable about a first rotation axis L1. The other end portion of the connecting member 31 is connected to a second housing 2 such that the connecting member 31 is rotatable about a second rotation axis L2 parallel to the first rotation axis L1. The first and the second housings 1, 2 are arranged such that when the second housing 2 is rotated up to a predetermined intermediate position, opposite end portions of the first housing 1 in a direction perpendicular to the first and the second rotation axes L1, L2 are protruded from the second housing 2 in the said direction.

Abstract: A liquid ejection head includes a recording element substrate including an ejection port that ejects liquid, and an energy generating element that generates energy used to eject liquid, an electric wiring substrate including wiring for transmitting electric power for driving the energy generating element, and an opening that exposes the recording element substrate, a plurality of connecting portions that electrically connect the recording element substrate and the electric wiring substrate, a recess formed between the recording element substrate and the electric wiring substrate, and at least one groove formed in the bottom of the recess corresponding to at least one part where the connecting portions are formed. The at least one groove includes a first portion formed along an arranging direction of the plurality of connecting portions, and a second portion formed in a direction intersecting with the arranging direction.

Abstract: One end portion of a connecting member 31 is connected to a first housing 1 such that the connecting member 31 is rotatable about a first rotation axis L1 fixed in position with respect to the first housing 1. The other end portion of the connecting member 31 is connected to a second housing 2 such that the connecting member 31 is rotatable about a second rotation axis L2 fixed in position with respect to the second housing 2 and extending parallel to the first rotation axis L1. The first housing 1 and the second housing 2 are located in different locations in a direction of the first and the second rotation axes L1, L2 such that a top surface 1a of the first housing 1 and an undersurface 2b of the second housing 2 are located generally on a same plane.

Abstract: One end portion of a connecting member 31 is connected to a first housing 1 such that the connecting member 31 is rotatable about a first rotation axis L1 fixed in position with respect to the first housing 1. The other end portion of the connecting member 31 is connected to a second housing 2 such that the connecting member 31 is rotatable about a second rotation axis L2 fixed in position with respect to the second housing 2 and extending parallel to the first rotation axis L1. The first housing 1 and the second housing 2 are located in different locations in a direction of the first and the second rotation axes L1, L2 such that a top surface 1a of the first housing 1 and an undersurface 2b of the second housing 2 are located generally on a same plane.

Abstract: A hinge assembly comprising a movable member 5 and a fixed member 6 rotatably connected to each other and a coiled spring (not shown) biasing the movable member 5 toward the fixed member 6. A receiving recess 11 is formed in an opposing surface 5b of the movable member 5 facing the fixed member 6. A spherical body 8 is received in the receiving recess 11 such that the spherical body 8 is movable in a circumferential direction of the movable member 5. A first cam portion 13a is formed in an opposing surface of the fixed member 6 facing the movable member 5. Rotation of the movable member 5 in a direction of an arrow causes the cam portion 13a to be abutted against the spherical body 8. The cam portion 13a converts a biasing force of the coiled spring into a rotational biasing force. The rotational biasing force causes the spherical body 8 to be rapidly abutted against a first hitting portion 11a of the receiving recess 11 and thereby to generate a clicking sound.

Abstract: One end portion of a connecting member 31 is connected to a first housing 1 such that the connecting member 31 is rotatable about a first rotation axis L1. The other end portion of the connecting member 31 is connected to a second housing 2 such that the connecting member 31 is rotatable about a second rotation axis L2 parallel to the first rotation axis L1. The first and the second housings 1, 2 are arranged such that when the second housing 2 is rotated up to a predetermined intermediate position, opposite end portions of the first housing 1 in a direction perpendicular to the first and the second rotation axes L1, L2 are protruded from the second housing 2 in the said direction.

Abstract: A liquid discharge recording head includes a recording element with a discharge port for discharging liquid and an electrically connecting portion arranged adjacent to the discharge port and receiving an electric signal for controlling the discharge of the discharge port. The liquid discharge recording head further includes a flexible wiring substrate for covering at least a portion of the recording element. The flexible wiring substrate includes each of a device hole for exposing the discharge port and a bonding hole arranged facing the electrically connecting portion independently. The liquid discharge recording head further includes a sealing agent for covering at least a portion of the electrically connecting portion and filled to at least a portion of the bonding hole. Thus, a liquid discharge recording head that enhances recording performance and that has superior productivity while maintaining reliability of the recording performance is provided.

Abstract: A hinge assembly comprising a movable member 5 and a fixed member 6 rotatably connected to each other and a coiled spring (not shown) biasing the movable member 5 toward the fixed member 6. A receiving recess 11 is formed in an opposing surface 5b of the movable member 5 facing the fixed member 6. A spherical body 8 is received in the receiving recess 11 such that the spherical body 8 is movable in a circumferential direction of the movable member 5. A first cam portion 13a is formed in an opposing surface of the fixed member 6 facing the movable member 5. Rotation of the movable member 5 in a direction of an arrow causes the cam portion 13a to be abutted against the spherical body 8. The cam portion 13a converts a biasing force of the coiled spring into a rotational biasing force. The rotational biasing force causes the spherical body 8 to be rapidly abutted against a first hitting portion 11a of the receiving recess 11 and thereby to generate a clicking sound.

Abstract: A liquid discharge recording head includes a recording element with a discharge port for discharging liquid and an electrically connecting portion arranged adjacent to the discharge port and receiving an electric signal for controlling the discharge of the discharge port. The liquid discharge recording head further includes a flexible wiring substrate for covering at least a portion of the recording element. The flexible wiring substrate includes each of a device hole for exposing the discharge port and a bonding hole arranged facing the electrically connecting portion independently. The liquid discharge recording head further includes a sealing agent for covering at least a portion of the electrically connecting portion and filled to at least a portion of the bonding hole. Thus, a liquid discharge recording head that enhances recording performance and that has superior productivity while maintaining reliability of the recording performance is provided.

Abstract: A method for manufacturing a component provided with a number of liquid paths having movable members for use of liquid discharging comprises the steps of displacing the movable members provided for thin film material by use of such thin film material having the movable members on it, and a component provided with a plurality of recessed portions, and of placing the movable members, which are in the state of being displaced with respect to the recessed portions of the component correspondingly, hence making it possible to fabricate a liquid jet head without damaging or deforming such thin film material constituting the movable members. With the provision of the movable members, the discharging power and efficiency of the liquid jet head are significantly enhanced to obtain recorded images of high quality at higher speeds.

Abstract: A method for correcting a recording head is provided to solve the problems of density unevenness in recorded images. The density comparison is made with the reference density for a predetermined unit in the density distribution of an image recorded by the application of n kinds of signals. Then, one of the n kinds of signals which is close to the reference density is selected. The properties of the signal thus selected are transmitted to the recording head together with the correction data, hence correcting density unevenness.

Abstract: A method for manufacturing a liquid jet recording head comprises of the steps of calculating the difference between the distance B from the first heater on the element substrate to the cut face of the element substrate and the distance A from the first flow path groove on the ceiling plate to the abutment reference of the ceiling plate, measuring the amounts of deviation in the positional precisions in the state where the element substrates and the ceiling plates are actually positioned, working out a correction value from the distributional condition of such deviations, feeding back the correction value for determining the corrected amount of retraction. Then, after the abutment reference of the ceiling plate is allowed to abut upon the cut face of the element substrate by means of a push jig, retraction is performed by moving the ceiling plate by means of a retraction jig in the reverse direction with respect to the element substrate, hence positioning the ceiling plate and the element substrate.

Abstract: A method for manufacturing a liquid jet recording head comprises of the steps of calculating the difference between the distance B from the first heater on the element substrate to the cut face of the element substrate and the distance A from the first flow path groove on the ceiling plate to the abutment reference of the ceiling plate, measuring the amounts of deviation in the positional precisions in the state where the element substrates and the ceiling plates are actually positioned, working out a correction value from the distributional condition of such deviations, feeding back the correction value for determining the corrected amount of retraction. Then, after the abutment reference of the ceiling plate is allowed to abut upon the cut face of the element substrate by means of a push jig, retraction is performed by moving the ceiling plate by means of a retraction jig in the reverse direction with respect to the element substrate, hence positioning the ceiling plate and the element substrate.

Abstract: An apparatus and method for accurately and rapidly correcting a printing characteristic of a printhead, a printhead whose printing characteristic is corrected by the above apparatus, and a printing apparatus using the printhead. In the apparatus for correcting the printing characteristic of the printhead, n kinds of printing control signal patterns are used to a full line printhead, printing patterns are experimentally printed in response to the printing control signal patterns on a printing medium and a reference density distribution is generated from one of n kinds of the printing patterns printed. Then, one of the n kinds of printing control signal patterns is selected for each of a plurality of printing elements such that a density value on each pixel is equal or close to the reference density distribution.

Abstract: A liquid ejection head includes an ejection outlet for ejecting liquid; a plurality of liquid flow paths; a bubble generating region for generating a bubble; a movable member disposed faced to the bubble generating region and movable between a first position and a second position which is farther from the bubble generating region than the first position; wherein the movable member moves from the first position to the second position by pressure produced by the generation of the bubble to permit expansion of the bubble more in a downstream side closer to the ejection outlet than in an upstream side. In addition, a first common liquid chamber having a height, measured in a direction perpendicular to a plane including the movable member at rest, which is larger than that of the liquid flow paths, wherein the movable member has a fulcrum in the first common liquid chamber and a free end in the liquid flow paths.

Abstract: According to the present invention, a liquid jet recording head assembly method comprises the steps of assembling a pressing member with a reference member to which an element substrate is fixed, charging a forcing spring provided for the pressing member to obtain a gap through which a grooved top plate can be inserted, assembling, by means of the gap, the grooved top plate with the element, and releasing the charging of the forcing spring and using the force exerted by the forcing spring to press the grooved top plate against the element substrate, so as to secure the grooved top plate to the element substrate.

Abstract: A manufacturing method for a liquid ejecting unit having a comb-like separation wall, a displaceable member and a grooved member mating with the comb-like separation wall includes engaging the separation wall with the grooved member while being positioned by an abutment reference.