Abstract: A liquid discharge head comprises: a discharge element substrate including a discharge port for discharging liquid and a discharge energy generating element; an electrical wiring substrate for inputting an electrical signal to the discharge energy generating element; a supporting mechanism for supporting the discharge element substrate and the electrical wiring substrate; an electrical connection portion for electrically connecting the discharge element substrate with the electrical wiring substrate; a sealant coated on the electrical connection portion; and a film-like member coating the electrical connection portion along the shape of the electrical connection portion through the sealant. Thus, the liquid discharge head resultingly includes the electrical connection portion on which the height of the sealant is suppressed and lowered sufficiently so as to prevent a problem that the electrical connection portion is damaged and/or exposed due to its height.

Abstract: An ink jet print head is provided which allows an ejection opening-formed surface to be cleaned well and can improve a precision with which ejected ink lands on a print medium. For this purpose, conductive layers of a conductive material are formed on the support substrate and planarized. The liquid ejection substrates are mounted on the support substrate with high precision, without a sealing agent, that protects electrical connecting portions on the liquid ejection substrates, protruding from the ejection opening-formed surface.

Abstract: A liquid discharge head includes a discharge element including a discharge port, a liquid supply port, an electric connection terminal, and a heat transfer terminal. The discharge head also includes a supporting member including an electric connection terminal portion formed on a first surface thereof and electrically connected to the electric connection terminal, a heat transfer terminal junction portion formed on the first surface and connected to the heat transfer terminal, a plurality of through-holes extending between the first surface and a second surface of the supporting member, a partition wall portion separating the through-holes from each other, and a heat transfer path connected to the heat transfer terminal junction portion. An interval between the through-holes increases according to a direction from the first surface to the second surface. A volume of the heat transfer path increases according to the increase of the interval.

Abstract: Liquid ejection chips 101, each having a ejection port 103, a supply port 104 communicating with the ejection port 103 by way of a flow channel 108 and a heater arranged in the flow channel 108, are bonded to a single chip plate 102 to form a two-dimensional array. As a result, a liquid ejection unit having a plurality of ejection ports 103 and a plurality of supply ports 104 is formed. As the heaters are driven while probe solutions are supplied to the respective supply ports 104, the probe solutions are ejected from the ejection ports 103 to the outside under the pressure of bubbles. The probe solutions of mutually different types are ejected respectively from the ejection ports 103 and made to adhere to a solid-phase substrate. Thus, a desired probe array can be manufactured.

Abstract: In order to dissipate to a high degree of efficiency the heat of a liquid discharge substrate of an ink jet recording head and effectively suppress increases in the substrate temperature, this invention provides an ink jet recording head in which a liquid discharge substrate is mounted on a supporting member through a foil-shaped heat dissipation member, in which the area of the heat dissipation member is greater than the projected area of the liquid discharge substrate with respect to the supporting member.

Abstract: An ink jet recording head includes a recording element substrate having an array of discharge ports and a side surface extending along an array direction of the discharge ports, and an opposite surface facing the side surface. A minimum distance is provided between the opposite surface and the side surface at least at a center portion of the side surface. Also, a distance greater than the minimum distance is provided between the opposite surface and the side surface at an end portion of the side surface in the array direction.

Abstract: A liquid discharge head comprising a liquid discharge substrate in which a first liquid supply port being a penetration port for supplying a liquid is formed and is provided with a first electrode receiving electric energy for discharging the liquid on a surface thereof on one side, a supporting member which is opposed to the first electrode and a second liquid supply port being a penetration port for supplying the liquid is formed to communicate with the first liquid supply port, the supporting member provided with a second electrode for transmitting the electric energy to the first electrode on a surface opposed to the first electrode, and a conductive first intermediate member abutting with both of the first electrode and the second electrode to electrically connect the first electrode and the second electrode, wherein an abutting surface of the first intermediate member abutting with the first electrode is flattened.

Abstract: To provide a highly reliable, compact, and inexpensive ink jet recording head, the present invention includes: a liquid discharge substrate having on a front surface side a discharge port for discharging a liquid, and having, on a back surface side, a liquid discharge port for supplying the liquid discharged from the discharge port, and an electrode for transmitting and receiving a signal to drive energy generation means for discharging the liquid from the discharge port; a film-like electrical wiring member joined to the back surface of the liquid discharge substrate, the film-like electrical wiring member including a liquid supply hole communicating with the liquid supply port of the liquid discharge substrate, and an electrical connection portion connected to the electrode; and a retaining member for retaining the liquid discharge substrate with the electrical wiring member interposed therebetween, the retaining member including a liquid supply port for supplying the liquid to the liquid supply port of the

Abstract: The present invention provides a highly reliable, small-sized, and inexpensive ink jet recording head by configuring the ink jet recording head including an electrical wiring member that is joined with a back surface of a liquid discharge substrate, and that includes a liquid supply port communicating with the liquid supply port of the liquid discharge substrate and an electrical connection portion connected to the electrode; and a holding member that holds the liquid discharge substrate through the electrical wiring member, and that includes a liquid supply port for supplying the liquid to the liquid supply port of the liquid discharge substrate, wherein the liquid supply port of the electrical wiring member, the liquid supply port of the liquid discharge substrate, and the liquid supply port of the holding member communicate with one another, a sealing agent for sealing the electrical connection portion is filled up between the liquid discharge substrate and the electrical wiring member, and a side surface

Abstract: A liquid discharge head comprises: a discharge element substrate including a discharge port for discharging liquid and a discharge energy generating element; an electrical wiring substrate for inputting an electrical signal to the discharge energy generating element; a supporting mechanism for supporting the discharge element substrate and the electrical wiring substrate; an electrical connection portion for electrically connecting the discharge element substrate with the electrical wiring substrate; a sealant coated on the electrical connection portion; and a film-like member coating the electrical connection portion along the shape of the electrical connection portion through the sealant. Thus, the liquid discharge head resultingly includes the electrical connection portion on which the height of the sealant is suppressed and lowered sufficiently so as to prevent a problem that the electrical connection portion is damaged and/or exposed due to its height.

Abstract: A liquid discharge head cartridge includes a recording element unit having a plate member with liquid supply paths for supplying liquid to a recording element base plate for recording by discharging the liquid; a liquid supply unit portion having a communication passage for conducting liquid from a liquid supply source; and an elastic sealing member that forms a seal between one end portion of the liquid supply paths of the plate member and an end portion of the communication passage facing the one end portion of the liquid supply paths. The elastic sealing member is provided with liquid flow paths communicating with the liquid supply paths and the communication passage. The liquid supply unit portion and the recording element unit are adhesively bonded with each other at locations other than those having the elastic sealing member arranged thereon.

Abstract: An ink jet recording head has a plurality of discharge energy generating devices for discharging recording liquid; a recording element base plate arranged on the face opposite the surface where the devices are arranged, having a plurality of recording liquid supply ports for supplying recording liquid to the devices; and a supporting member that holds and fixes the recording element base plate. For the supporting member, a plurality of recording liquid supply paths are arranged to supply recording liquid to the supply ports of the recording element base plate, respectively, and the width of the supply paths is formed to be smaller than the opening width of the inlet portions of the supply ports. Further, stepped portions created between the respective supply paths and supply ports are buried by a bonding agent forced out from the bonding face of the recording element base plate and the supporting member.

Abstract: A method for manufacturing an ink jet recording head, which is provided with a recording elemental substrate having discharge port group for discharging ink, an electric wiring substrate electrically connected with the recording elemental substrate, and a supporting member for holding and fixing the recording elemental substrate and the electrical wiring substrate, comprises the steps of injecting thermohardening filler into a filler retaining portion communicated with the sealing area requiring sealing; filling the area with the thermohardening filler injected into the filler retaining portion by heating the filler to flow; and hardening the filled thermohardening filler. With the structure thus arranged, it is possible to eliminate any electrical and structural defects in order to materialize a highly reliable and compact ink jet recording head.

Abstract: A liquid discharge apparatus for producing a probe carrier, having a configuration capable of supplying a discharge unit with plural probe solutions without increasing the dimensions of the apparatus, as well as a method and apparatus for producing the probe carrier utilizing such liquid discharge apparatus. The arrangement pitch of the supply openings to liquid holding portions from plural liquid discharging portions (which are provided in the liquid discharge apparatus and respectively correspond to the plural probes) is set to be larger than the arrangement pitch of nozzle openings, thereby increasing the freedom in designing the position and capacity of the liquid holding portions for holding the probe solutions.

Abstract: Disadvantages relating to ink refill specific to an increase in a number of ink ejection openings in an ink jet print head is eliminated to provide a particularly excellent fast-response capability and ejection performance. More specifically, when an ink is supplied to a liquid chamber via an ink supply path and an ink supply opening formed in a support member and a print element substrate in a print head, and is then ejected from ejection openings, a pressure of an ink effected upon the ejection is transmitted to the ink supply path. This pressure, however, can be absorbed by air chambers via communication paths to reduce adverse effects of the pressure on ink refill in the liquid path after the ejection. In this case, since the air chambers and other components are structured to be closed with respect to the atmosphere, problems such as an increase in viscosity which are associated with communication of the air chambers and other components with the atmosphere can be prevented.

Abstract: An ink jet recording head has a plurality of discharge energy generating devices for discharging recording liquid, while being provided with a recording element base plate arranged on the face opposite to the surface where the devices are arranged, having a plurality of recording liquid supply ports for supplying recording liquid to the devices, as well as with a supporting member that holds and fixes the recording element base plate. For the supporting member, a plurality of recording liquid supply paths are arranged to supply recording liquid to each of the supply ports of the recording element base plate, respectively, and then, the flow path width of each supply flow path is formed to be smaller than the opening width of inlet portion of each supply port. Further, the steps to be created between the supply flow path and the supply port is buried by the bonding agent forced out from the bonding face of the recording element base plate and the supporting member.

Abstract: A liquid discharge head comprises a plurality of main discharge ports arranged at predetermined intervals, at least one sub-discharge port arranged in the arrangement direction of the main discharge ports on both end sides of the arrangement direction of main discharge ports at intervals larger than the intervals of the main discharge port arrangement, a plurality of liquid chambers having these plural discharge ports open thereto, a common liquid chamber having these liquid chambers communicated therewith, and liquid being supplied thereto, and a plurality of discharge energy generating units provided for each of the liquid chambers corresponding to the main discharge ports and the sub-discharge ports to generate discharge energy utilized for discharging liquid from the main discharge ports and the sub-discharge ports.

Abstract: A liquid ejection recording head which receives liquid from one or more liquid containers mounted on a carriage, the liquid container having a press-contact member of fibrous material at a liquid outlet, the liquid ejection recording head includes a tubular member for receiving ink from the liquid container, the tubular member being provided with an upstream edge with respect to a direction of flow of the liquid therethrough; a filter provided in the tubular member and having an outer surface press-contactable to the press-contact member, the outer surface being a substantially flat surface and being outward beyond the upstream edge of the tubular member.

Abstract: Disadvantages relating to ink refill specific to an increase in a number of ink ejection openings in an ink jet print head is eliminated to provide a particularly excellent fast-response capability and ejection performance. More specifically, when an ink is supplied to a liquid chamber via an ink supply path and an ink supply opening formed in a support member and a print element substrate in a print head, and is then ejected from ejection openings, a pressure of an ink effected upon the ejection is transmitted to the ink supply path. This pressure, however, can be absorbed by air chambers via communication paths to reduce adverse effects of the pressure on ink refill in the liquid path after the ejection. In this case, since the air chambers and other components are structured to be closed with respect to the atmosphere, problems such as an increase in viscosity which are associated with communication of the air chambers and other components with the atmosphere can be prevented.

Abstract: A print element unit comprising a print element substrate, and a plate-like member having a surface to be adhered on which the print element substrate is positioned and fixedly adhered via heat-hardening adhesive and a first reference surface used as a positioning reference to the print element substrate to be fixedly adhered, wherein a holder member for holding tanks for storing liquid supplied to the print element substrate, having the second reference surface to be detachably engaged with the first reference surface of the plate-like member and with a reference surface of a mounting portion of a carriage member movable together with the print element substrate and the plate-like member, and the second reference surfaces are engaged with the first surface, and then the print element unit and the holder member are fixedly adhered with each other via a hardening adhesive at a low (normal) temperature.