Abstract: The present invention provides an ink jet recording head that includes a substrate with a plurality of elements for generating energy for discharging ink, and a plurality of orifice plates having a plurality of orifices for discharging the ink. These orifice plates are attached to the substrate so that the orifices are disposed above the plurality of energy generating elements, and a slit is provided between the respective orifice plates. The present invention also provides an ink jet recording apparatus incorporating such an ink jet recording head.

Abstract: A recording head comprises a recording element substrate on which a plurality of recording elements and first connecting electrodes connecting to the recording elements are disposed a driving element substrate on which a plurality of driving elements for driving the plurality of recording elements and second connecting electrodes connecting to the driving elements are disposed and a pressure welding member for producing a pressure welding force to pressure weld the recording element substrate and the driving element substrate together. The recording element substrate and the driving element substrate are pressure welded by the pressure welding member to connect the first connecting electrodes and the second connecting electrodes, with the recording element substrate sandwiched between the driving element substrate and the pressure welding member.

Abstract: The present invention provides an ink-jet head, an ink-jet cartridge and an ink-jet apparatus, which can provide certain and stable electrical connection in a separable manner between an energy generation element unit and a driving element unit. The ink-jet head includes the energy generation element unit U.sub.E having signal wires for supplying electric signals for heat generating resistors, and connecting electrodes projectingly provided at the ends of the signal wires positioned on the mating surface F.sub.E, and the driving element unit U.sub.D having signal wires for feeding electric signals from the driving elements for driving head generating resistors, and connecting electrodes projectingly provided at the ends of the signal wires positioned on the mating surface F.sub.D. The connecting electrodes are connected to each other by mutually mating the mating surfaces F.sub.E and F.sub.D of the energy generation element unit U.sub.E and the driving element unit U.sub.D.

Abstract: A film-forming apparatus is provided with a particle prevention means, whose structure prevents a drop in film-yield due to particle formation. The particle prevention means does not need to be cleaned as frequently as known particle prevention means, thus increasing film production efficiency. This particle prevention means has a tongued-and-grooved surface. When the particle prevention means having a tongued-and-grooved surface is set in the film-forming apparatus, the film-forming material is deposited in a discontinuous manner on the particle prevention means, which can extend the time of film exfoliation, and in turn, extend the cycle for cleaning the particle prevention means, and prevent a drop in film-yield due to the film exfoliation.

Abstract: An ink jet recording head wherein at least peripheral portions of discharge ports comprise a film which contains a polymer having a fluorine heterocyclic structure in the principal chain.

Abstract: An ink jet recording apparatus includes a recording head having plural discharge openings for discharging ink, a liquid chamber for storing the ink to be supplied to the discharge openings, a liquid flow path for communicating the discharge openings with the liquid chamber, and plural energy generating elements for generating energy to be used for discharging the ink from the discharge openings. The head also includes a substrate having the energy generating elements provided thereon and a transfer molded structural member made of thermosetting resin. The structural member has a concave portion for forming a liquid flow path, and the structural member is fused to the substrate.

Abstract: A method of manufacturing a recording head for use in an ink jet head involves providing a discharge port formation member having a surface in which orifices are to be formed, treating a discharge port face of the discharge port formation member with a water-repellent material, and forming orifices by applying radiation from a pulsed laser beam to the discharge port formation member which has been treated by the material having a water-repellent property, so that forming the orifices creates byproducts. The method also involves sticking at least once a tape having an adhesive layer against the discharge port face of the discharge port formation member against at least peripheral portions of the orifices having the byproducts created in the orifice forming step sticking thereto and deposited therein, and peeling the tape therefrom.

Abstract: An ink jet recording head which includes a substrate for ink jet recording head and a nozzle structural body provided with a plurality of nozzle-forming walls which is disposed over said substrate for ink jet recording head, said substrate for ink jet recording head comprising a base member, a heat generating resistor capable of generating, upon energization, thermal energy to be utilized for discharging ink, a pair of electrodes electrically connected to said heat generating resistor, a first protective layer, and a second protective layer wherein said heat generating resistor and said pair of electrodes are arranged on said base member, and said first protective layer and said second protective layer are disposed in this order over said heat generating resistor and said pair of electrodes, wherein a plurality of given portions of said second protective layer each situated at a position where said nozzle structural body is joined through one of said nozzle-forming walls to said substrate for ink jet recordin

Abstract: A method for manufacture of an ink jet head comprises the process of forming a head main body by providing a positive resist layer to constitute ink passages for a substrate having ink ejection pressure generating means and then a ceiling member therewith; forming a carbon-contained film for the surface where the ink discharging ports of the head main body are formed; conducting a fluoric plasma treatment given to the carbon-contained film by utilizing a hydrofluoride compound; and removing the positive resist layer. With this method, an F-C coupled water repellent film is formed on the discharging port formation surface of an ink jet recording head evenly with a desirable bonding capability to enhance the reliability of water repellency.

Abstract: A method of manufacturing a recording head for use in an ink jet printer involves the steps of, after treating a surface of a discharge port formation member having plural discharge ports formed thereon, which formation member is formed with a material having a water-repellent property, forming the discharge ports by applying radiation from a pulsed laser beam, and then performing heat treatment for eliminating byproducts from the orifice forming sticking to and deposited in peripheries of the discharge ports, or if an orifice plate, byproducts sticking to peripheries of the discharge ports.

Abstract: A method for manufacturing an ink jet head having a discharge opening for discharging ink and an ink passage communicated with the discharge opening, includes the step of forming the discharge opening by performing a cutting operation along a portion where the discharge opening is to be formed, while maintaining the ink passage in a pressurized condition by filling the ink passage with fluid. Another method includes the step of cleaning an ink passage by introducing liquid and gas into the ink passage alternately; and an ink jet apparatus comprising such an ink jet head, and a member for holding the ink jet head.