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: 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: 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 the 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. The ink jet recording apparatus comprises the ink jet recording head and a member for mounting the ink jet recording head.

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.

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: 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: By the present invention, there is provided an ink-jet recording head comprising at least one recording device substrate for discharging a recording liquid by pressure of bubble formation caused by thermal energy, a flexible film wiring substrate for fitting the recording device substrate thereto, an electrode pad for receiving control signals from outside for controlling thermal energy generation in the recording device substrate, and a wiring substrate connected electrically to the recording device substrate with interposition of the flexible film wiring substrate, wherein an input terminal of the flexible film wiring substrate and an output terminal of the wiring substrate are electrically connected to each other and fixed by a thermosetting adhesive by hot-pressing, and the connected electrode portion is coated with the thermosetting adhesive.

Abstract: An ink jet head includes bump-shaped electrodes and of a recording element board and a drive element board, respectively. Of both electrodes, Young's modulus of a material forming the electrode is made smaller than Young's modulus forming the other bump-shaped electrode. With this construction, when the electrode and the electrode are press bonded to each other, since the electrode is relatively smaller in rigidity to the deformation, it deforms for itself thereby minimizing deformation in the electrode. As a result, when a new board is mounted, even if the electrode has an error, good bonding can be carried out.

Abstract: It is intended to secure the space for the signal wirings in the manufacture of an ink jet recording element unit of a high density. In the manufacture of the ink jet recording element unit by providing, on a substrate, a plurality of recording elements each composed of an individual electrode, an electrothermal converting element, a common electrode and a return electrode, a notch portion is formed on the outer edge of the electrothermal converting member adjacent to the return electrode.

Abstract: There is disclosed an ink jet head comprising plural discharge energy generating elements for generating energy to be used for discharging ink droplets, ink discharge openings for discharging the ink droplets, a substrate bearing thereon an array of the plural discharge energy generating elements and an ink supply aperture consisting of a penetrating hole extending along the direction of array of the discharge energy generating elements, and an orifice plate provided with the ink discharge openings, in which the substrate and the orifice plate are mutually adjoined to define therebetween ink paths connecting the ink discharge openings and the ink supply aperture, wherein the orifice plate comprises plural projections in a position corresponding to the ink supply aperture.

Abstract: In order to simply form individual wiring and common wiring in single layer, single layer of individual wiring and common wiring connected to heating resistors are formed. Electrode connected to common wiring is located at a position closer to the heating resistor than electrodes connected to the individual wiring.

Abstract: A wiring board connecting method of electrically connecting a plurality of first wiring boards juxtaposed side by side each having terminals at one end, to a second common wiring board having a plurality of terminal groups to be connected to the terminals of the first wiring boards. The method includes the steps of providing a first position alignment mark at each side area of each of the first wiring boards and a second position alignment mark at each area between adjacent terminal groups of the second wiring board, after the first and second wiring boards are superposed to make the areas provided with the first and second position alignment marks face one another, aligning the first wiring boards with the second wiring board so as to make the largest gap between the first and second position alignment marks as small as possible, and electrically connecting the first wiring boards to the second wiring board.

Abstract: A recording element driving unit has an electrical connecting member having a support member of electrically insulating material and electroconductive members arranged on the support member. Each electroconductive member has one end exposed on one surface of the support member and another end exposed on another surface of the support member. A recording element substrate having recording elements is connected to one exposed end of at least one electroconductive member. A driving element substrate has driving elements thereon, and each driving element has connecting portions. The driving elements are larger in number than a number of driving elements electrically connected to the recording elements and are fewer in number than the electroconductive members.

Abstract: A liquid ejecting recording head using thermal energy to eject liquid for recording an image, includes an element chip having a plurality of electrothermal transducer elements for producing thermal energy to create bubbles to ejecto the liquid; a temperature detecting element disposed on the element chip to detect a temperature of the chip; liquid passages, disposed on the chip, corresponding to the electrothermal transducer elements having an opening at an end; correcting means for correcting an output of the temperature detecting element.

Abstract: A process for producing an ink jet recording device involves providing a support member having an electro-thermal converting member and a wiring electrically connected to the electro-thermal converting member thereon, forming a first insulating layer on the support member, and forming on the support member a second insulating layer for increasing a protruded height of a bump-shaped electrode, the second insulating layer having a desired thickness. Other steps in the method involve removing part of the first and second insulating layers to expose a portion of the wiring, forming a bump-shaped electrode to a height corresponding to the thickness of the second insulating layer on the exposed portion of the wiring by electroplating, and removing the second insulating layer, resulting in the bump-shaped electrode having a desired height.

Abstract: An improved substrate for an ink jet head includes a pair of first wiring electrode layers disposed on a base member through a first electrode contact layer, and a pair of second wiring electrode layers disposed on a pair of first wiring electrode layers through a second electrode contact layer composed of an electroconductive material such that the pair of second wiring electrode layers correspond to the pair of first wiring electrode layers. Either the first electrode contact layer or the second electrode contact layer contains a heat generating resistor layer capable of being energized upon the application of a voltage through the pair of first wiring electrode layers or the pair of second wiring electrode layers.

Abstract: A recording element unit includes a support member, a recording element provided on the support member and having a wiring layer for supplying electrical signals, and a bump-shaped electrode connected to the wiring layer so as to be raised therefrom. The bump-shaped electrode includes a plurality of raised portions. Such a bump-shaped electrode is also included in a recording element driving unit, an ink jet unit, and an ink jet driving unit. This arrangement solves the problem of the low reliability of the electrical connection between a recording element substrate, on which the electrode is positioned, and a driving element substrate, for driving the recording element. The unit also includes first and second protective layers with the second protective layer having a thickness greater than that of the first. This feature provides structural strength to the support member in order to prevent warping.

Abstract: In the wiring portion in the wiring substrate constituting a recording head of a liquid jet type recording apparatus, two electroconductive layers are connected through a protective layer that includes at least two unit layers. One unit layer is formed with a through hole having a shape and size different from those of the through hole(s) in the remaining unit protective layer(s), thereby assuring the formation of an electric connection portion and improving durability of the electric connection portion.

Abstract: A substrate for an ink jet recording head comprises a support member, an electro-thermal converter, disposed on the support member, having a heat generating resistive layer and a pair of electrodes connected to said heat generating resistive layer, and a glaze layer on the support member underneath the electro-thermal converter. The glaze layer is omitted from between a heat generating portion provided by the resistive layer between a gap in the electrodes so that the heat generated by such heat generating portion can be properly dissipated.