Abstract: An inkjet recording apparatus has an inkjet head with an ejection surface. The ejection surface has a first end, and a second end opposite the first end. The ejection surface also has a first and second control portion, and a contact portion located between the first control portion and the second control portion. Additionally, a number of ejection ports are formed through the ejection surface. The inkjet recording apparatus also includes a wiper and a wiper moving mechanism. The wiper moving mechanism moves the wiper between the first end and the second end. When the wiper is located over the contact portion, the wiper contacts the ejection surface, and when the wiper is located over the first or second control portions, the wiper is located away from the ink ejection surface.

Abstract: A passage unit formed with ink ejection ports, an actuator mounted on the passage unit, and a cover member are provided. Further provided is a side plate member that is in contact with a mounting face of the passage unit on which the actuator is mounted. The side plate member has a side plate and an opposing plate that is connected to the side plate. The side plate extends in the longitudinal direction of the passage unit and along a contour line of the passage unit. The side plate is in crosswise contact with the mounting face. The opposing plate is opposed to the mounting face. The cover member is placed at such a position that the actuator and the side plate member are sandwiched between the cover member and the passage unit. The cover member presses the opposing plate toward the passage unit.

Abstract: An ink-jet head of the present invention includes a discharge valve that includes a valve chamber and an opening/closing mechanism. The valve chamber has an ink supply port through which ink is supplied from outside, an outside discharge port through which ink is discharged to outside, and a reservoir discharge port through which ink is discharged to an ink reservoir. The opening/closing mechanism is able to selectively take either one of a state where a passage is formed between the ink supply port and the outside discharge port while access between the ink supply port and the reservoir discharge port is blocked and a state where a passage is formed between the ink supply port and the reservoir discharge port while access between the ink supply port and the outside discharge port is blocked.

Abstract: An inkjet head includes a flow channel member comprising a first orifice which opens in a first direction, in which ink flows into the first orifice. The flow channel member also includes a second orifice which opens in a second direction opposite to the first direction, in which ink flows out from the second orifice, and an ink flow channel formed therein, in which the ink flow channel extends from the first orifice to the second orifice. Moreover the inkjet head includes a flexible film which is attached to the flow channel member, and the flexible film seals the ink flow channel.

Abstract: The confronting area of flexible printed circuit is interposed between the leading face and the passage unit. A protruding length of the protrusion region from the spaced face is equal or larger than that of the fixed region. A recess is formed on the support face of the passage unit at a position confronting the leading face. Both ends of the leading face are interposed between both ends of the opening of the recess with respect to a draw-out direction. The confronting area of the flexible printed circuit passes through the recess.

Abstract: An ink-jet head protection assembly of the present invention comprises an ink-jet head, a head cap that protects the ink-jet head and a support member supporting the head cap so that the head cap contacts an ejection face of the ink-jet head. In the head cap, a surface confronting the ejection face of the ink-jet head is formed with a protrusion contacting the ejection face. A contact surface of the protrusion to the ejection face surrounds, in plan view, an area in which ejection ports are formed. Gas is filled in a closed space defined by a surface of the head cap, the protrusion and the ejection face.

Abstract: There are provided an ejection actuator that ejects ink from a nozzle, and a driver chip that supplies a signal for driving the ejection actuator. In a first location, the driver chip is sandwiched between a flat plate member and an elastic member. The elastic member biases the driver chip to the flat plate member. The elastic member is supported by the support member. A restricting portion is provided on at least either one of the support member and the flat plate member. When the support member and the flat plate member get close to each other in a second location different from the first location, the restricting portion restricts movement of at least either one of the support member and the flat plate member so as to prevent the driver chip and the support member in the first location from getting closer to each other beyond a minimum distance.

Abstract: An ink-jet head includes a flexible print cable (FPC) supplying a driving signal to an actuator unit. The actuator unit has a piezoelectric member, an inner electrode, individual electrodes formed on a surface of the piezoelectric member, a first surface terminal and second surface terminals. A partial area of the FPC confronts the surface of the piezoelectric member and an adjacent area continuous to the partial area extends in a direction away from the surface of the piezoelectric member. A distance between an end of the surface of the piezoelectric member closest to the adjacent area and the first surface terminal is equal to or greater than a distance between the end surface of the piezoelectric member and the second surface terminal disposed closest thereto. The FPC is adhered proximate the end of the piezoelectric member via a thermosetting adhesive.

Abstract: The passage unit is provided with a through hole that connects the ink ejection face and the support face. The ink supply block is provided with a through hole that connects the bond face and the ink inlet face. The filter film blocks communication between the through hole provided in the passage unit and the through hole provided in the ink supply block.

Abstract: The first passage component and the second passage component are fixed with each other as the male screw part is screw-engaged with the female screw hole while the cylinder part is inserted into the through-hole. The second passage component has a convex contacting the head and a spaced surface spaced apart from the head in the axial direction, both in a first annular confronting area confronting the head of the stepped screw, at a surrounding of the through-hole of the third surface. The axial length of the cylinder part is same as the length of a line segment extending to the second surface from the leading end of the convex in the axial direction, while the axial length of the cylinder part is smaller than the length of the line segment until the male screw part is screw-engaged with the female screw hole.

Abstract: An inkjet head includes a passage member having an ink passage formed therein. The ink passage has a first end and a second end opposite the second end, and the ink passage includes a supply port configured to receive an ink from an outside of the passage member and to dispense the ink into the ink passage, and a discharge port configured to dispense the ink from the ink passage to the outside of the passage member. Moreover, the supply port and the discharge port are each positioned adjacent to a predetermined end of the passage member.

Abstract: This invention discloses an inkjet recording apparatus having an inkjet head with an ejection surface. The ejection surface has a first end, and a second end opposite the first end. The ejection surface also has a first and second control portion, and a contact portion located between the first control portion and the second control portion. Additionally, a number of ejection ports are formed through the ejection surface. The inkjet recording apparatus also includes a wiper and a wiper moving mechanism. The wiper moving mechanism moves the wiper between the first end and the second end. When the wiper is located over the contact portion, the wiper contacts the ejection surface, and when the wiper is located over the first or second control portions, the wiper is located away from the ink ejection surface.

Abstract: An ink-jet head includes a first passage forming member, a second passage forming member, and a circuit board. The first passage forming member has an ink inlet port, an ink outlet port, and a first ink passage extending from the ink inlet port to the ink outlet port. The first passage forming member is sandwiched between the circuit board and the second passage forming member. An electronic element is mounted on the circuit board. A projection defining a recess is formed on a surface of the first passage forming member. The electronic element is mounted on position facing the recess of the circuit board, and is received therein.

Abstract: A passage unit formed with ink ejection ports, an actuator mounted on the passage unit, and a cover member are provided. Further provided is a side plate member that is in contact with a mounting face of the passage unit on which the actuator is mounted. The side plate member has a side plate and an opposing plate that is connected to the side plate. The side plate extends in the longitudinal direction of the passage unit and along a contour line of the passage unit. The side plate is in crosswise contact with the mounting face. The opposing plate is opposed to the mounting face. The cover member is placed at such a position that the actuator and the side plate member are sandwiched between the cover member and the passage unit. The cover member presses the opposing plate toward the passage unit.

Abstract: The confronting area of flexible printed circuit is interposed between the leading face and the passage unit. A protruding length of the protrusion region from the spaced face is equal or larger than that of the fixed region. A recess is formed on the support face of the passage unit at a position confronting the leading face. Both ends of the leading face are interposed between both ends of the opening of the recess with respect to a draw-out direction. The confronting area of the flexible printed circuit passes through the recess.

Abstract: There are provided an ejection actuator that ejects ink from a nozzle, and a driver chip that supplies a signal for driving the ejection actuator. In a first location, the driver chip is sandwiched between a flat plate member and an elastic member. The elastic member biases the driver chip to the flat plate member. The elastic member is supported by the support member. A restricting portion is provided on at least either one of the support member and the flat plate member. When the support member and the flat plate member get close to each other in a second location different from the first location, the restricting portion restricts movement of at least either one of the support member and the flat plate member so as to prevent the driver chip and the support member in the first location from getting closer to each other beyond a minimum distance.

Abstract: An ink-jet head protection assembly of the present invention comprises an ink-jet head, a head cap that protects the ink-jet head and a support member supporting the head cap so that the head cap contacts an ejection face of the ink-jet head. In the head cap, a surface confronting the ejection face of the ink-jet head is formed with a protrusion contacting the ejection face. A contact surface of the protrusion to the ejection face surrounds, in plan view, an area in which ejection ports are formed. Gas is filled in a closed space defined by a surface of the head cap, the protrusion and the ejection face.

Abstract: An inkjet head includes a flow channel member comprising a first orifice which opens in a first direction, in which ink flows into the first orifice. The flow channel member also includes a second orifice which opens in a second direction opposite to the first direction, in which ink flows out from the second orifice, and an ink flow channel formed therein, in which the ink flow channel extends from the first orifice to the second orifice. Moreover the inkjet head includes a flexible film which is attached to the flow channel member, and the flexible film seals the ink flow channel.

Abstract: An inkjet head includes a passage member having an ink passage formed therein. The ink passage has a first end and a second end opposite the second end, and the ink passage includes a supply port configured to receive an ink from an outside of the passage member and to dispense the ink into the ink passage, and a discharge port configured to dispense the ink from the ink passage to the outside of the passage member. Moreover, the supply port and the discharge port are each positioned adjacent to a predetermined end of the passage member.

Abstract: The first passage component and the second passage component are fixed with each other as the male screw part is screw-engaged with the female screw hole while the cylinder part is inserted into the through-hole. The second passage component has a convex contacting the head and a spaced surface spaced apart from the head in the axial direction, both in a first annular confronting area confronting the head of the stepped screw, at a surrounding of the through-hole of the third surface. The axial length of the cylinder part is same as the length of a line segment extending to the second surface from the leading end of the convex in the axial direction, while the axial length of the cylinder part is smaller than the length of the line segment until the male screw part is screw-engaged with the female screw hole.