Abstract: A base station apparatus, configured to establish a wireless link for a backhaul line with a relay apparatus, and provide a first period in which a radio resource is used by the base station apparatus for the backhaul line, and a second period in which the radio resource is not used by the backhaul line.

Abstract: The invention provides an ink jet recording head, in which, for improving heat-dissipating property and electrode terminal connectivity and reducing production cost, second electrode terminals provided on a supporting surface of plural laminated sheets for supporting a liquid discharge substrate and to be connected with first electrode terminals of the liquid discharge substrate are provided outside an ink supply aperture formed in an outermost sheet constituting the supporting surface, and are supported by the outermost sheet and at least a sheet laminated thereunder.

Abstract: A printing head is provided in which a distance between an ejection port face of the printing head and a print medium is reduced to improve an ink ejection accuracy during a printing operation. The printing head of the present invention is a back shooting-type printing head. The heater and an electrode connected thereto are formed at the back face of the substrate. The electrode and an in-support-base wiring for supplying electricity to the heater via the electrode are connected to each other at the back face side of the substrate. The substrate and the support base have therebetween a liquid chamber wall member including therein a space. The substrate, the support base, and the liquid chamber wall member constitute a liquid chamber that communicates with the ejection port and that stores ink supplied to the ejection port.

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 highly reliable, small-sized, and inexpensive ink jet recording head includes an electrical wiring member that is joined with a back surface of a liquid discharge substrate and includes a liquid supply port communicating with a 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 includes a liquid supply port for supplying the liquid to the liquid supply port of the liquid discharge substrate. The liquid supply ports of the electrical wiring member, the liquid discharge substrate, and 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 of the liquid supply port of the electrical wiring member is covered with the sealing agent.

Abstract: A highly reliable, compact, and inexpensive ink jet recording head, 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 supply port for supplying the liquid to be 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 liquid discharge substrate.

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, in an ink jet recording head in which a liquid discharge substrate is mounted on a supporting member through a foil-shaped heat dissipation member, 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: The invention provides an ink jet recording head, in which, for improving heat-dissipating property and electrode terminal connectivity and reducing production cost, second electrode terminals provided on a supporting surface of plural laminated sheets for supporting a liquid discharge substrate and to be connected with first electrode terminals of the liquid discharge substrate are provided outside an ink supply aperture formed in an outermost sheet constituting the supporting surface, and are supported by the outermost sheet and at least a sheet laminated thereunder.

Abstract: A printing head is provided in which a distance between an ejection port face of the printing head and a print medium is reduced to improve an ink ejection accuracy during a printing operation. The printing head of the present invention is a back shooting-type printing head. The heater and an electrode connected thereto are formed at the back face of the substrate. The electrode and an in-support-base wiring for supplying electricity to the heater via the electrode are connected to each other at the back face side of the substrate. The substrate and the support base have therebetween a liquid chamber wall member including therein a space. The substrate, the support base, and the liquid chamber wall member constitute a liquid chamber that communicates with the ejection port and that stores ink supplied to the ejection port.

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: 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: 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: An electrode wiring line is formed on a supporting board which supports a printing element board constituting a printing head, and it is connected with the electrode wiring lines of a flexible board, thereby to interconnect electrode wiring lines which are formed on both the sides of the printing element board in order to feed a signal or the like of identical sort. Thus, a region for the electrode wiring line on one side of the flexible board can be omitted, with the result that the number of the wiring lines of the flexible board can be increased, or the density of these wiring lines can be heightened.

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: An ink jet recording head comprises a flat substrate having an end face and front and back flat main surfaces having a larger area as compared to the end face, an energy generating member for generating energy to be utilized to discharge the ink from a discharge port formed on the front flat main surface side of the substrate, a wiring electrode connected to the energy generating member formed on the front flat main surface of the substrate, and a connection electrode, connected to the wiring electrode, for receiving an electrical signal supplied from outside of the substrate, wherein the connection electrode is provided on another surface, different from the front and back flat main surfaces of the substrate. An ink jet recording apparatus comprises the ink jet recording head and a member for mounting the ink jet recording head.

Abstract: This invention provides a low-cost, economical printing apparatus and printing system. For example, characteristic information of a printhead which is described, printed, adhered, or formed on a printhead or its accessory (e.g., a packaging paper box) in a format identifiable to human or an electronic device is man-machine-interactively inputted to a host or electronically inputted to the host by a barcode reader or the like. The printing apparatus discriminates whether or not a command sent from the host via an interface is a command that includes characteristic information of the printhead, and control is made to write the characteristic information of the print head into a non-volatile memory (EEPROM) in accordance with the discriminating result. The printhead is controlled in accordance with the characteristic information written into the non-volatile memory to execute a print process.

Abstract: With an ink-jet recording head comprising multiple nozzle rows, for discharging ink of different colors, arrayed in approximately a straight line in approximately the same direction as the transporting direction of a recording medium, the positioning spacing of the nozzle rows of each of the colors is set so as to be greater than the length of the nozzle rows for discharging ink of each of the colors. This prevents bleeding on the recording medium and mixing of colors on the recording head in cases of printing at high speeds with in-line type recording heads, in an arrangement with simple modifications.

Abstract: An electrode wiring line is formed on a supporting board which supports a printing element board constituting a printing head, and it is connected with the electrode wiring lines of a flexible board, thereby to interconnect electrode wiring lines which are formed on both the sides of the printing element board in order to feed a signal or the like of identical sort. Thus, a region for the electrode wiring line on one side of the flexible board can be omitted, with the result that the number of the wiring lines of the flexible board can be increased, or the density of these wiring lines can be heightened.

Abstract: A method for producing an ink jet recording head having a plurality of recording element substrates each including a recording element for generating energy to be used for ink discharge and an electrode portion connected to the recording element, a wiring substrate provided with an electrode terminal to be electrically connected with the electrode portion of the plural recording element substrates and adapted to transmit an electrical pulse for ink discharge to the recording element, and an element substrate support member for supporting the plural recording element substrates, comprises a step of causing the plural recording element substrates to be supported on the element substrate support member, and a step of thereafter executing metal—metal bonding between the electrode portion of the plural recording element substrates and the electrode terminal of the wiring substrate.