Abstract: A liquid discharge head which is inexpensive, accurate, and highly reliable, and a method of manufacturing such a liquid discharge head are provided. On a substrate, a thermal crosslinking positive photosensitive material layer (a first positive photosensitive material layer) and a second positive photosensitive material layer are formed. First a pattern is formed on the second positive photosensitive material layer, then another pattern is formed on the first positive photosensitive material layer. Next, a negative resin for forming a liquid channel wall is laminated on the patterned first and second positive photosensitive material layers. A discharge port is formed in the negative resin layer and then the positive photosensitive material layers are removed.

Abstract: A liquid discharging method for a liquid head discharge head. The head has discharge ports, liquid flow paths, bubble generating areas, bubble generating means, liquid supply ports connecting the flow paths with a common liquid supply chamber, and a movable member in the flow paths supported with a minute gap to the supply ports. The area of the movable member surrounded at least by its free end and both sides continued therefrom is larger than the opening area of the supply ports. The method includes the step of setting a period for the movable member to substantially close the opening area during the period from the application of a driving voltage to the bubble generating means to the substantial termination of isotropical growth of the entire bubble by the bubble generating means. Growth of the bubble component in the direction opposite the discharge port can be suppressed, improving liquid refill.

Abstract: A liquid discharge head substrate used for a liquid discharge head is adapted to discharge liquid by applying discharge energy to the liquid. The substrate is a semiconductor substrate including an energy conversion element for converting electric energy into the discharge energy and a function element made of a ferroelectric material.

Abstract: The invention is to provide a liquid discharge head capable of achieving a higher liquid droplet discharge speed and a more stable discharge amount, thereby improving the discharge efficiency, and a producing method therefor.

Abstract: A method for manufacturing a microstructure comprises the steps of forming positive type resist layer (PMMA) on a base plate having heater formed thereon; forming positive type resist layer (PMIPK) on the aforesaid positive type resist layer; exposing the positive type resist layer on the upper layer to ionizing radiation of the wavelength region that gives decomposition reaction to the positive type resist layer (PMIPK) for the formation of a designated pattern by development; exposing the positive type resist layer on the lower layer to ionizing radiation of the wavelength region that givens decomposition reaction to the positive type resist layer (PMMA) for the formation of a designated pattern by development; and coating photosensitive resin film having adhesive property on the resist pattern formed by the positive type resist layer (PMMA) and positive type resist layer (PMIPK); and then, dissolving the resist pattern to be removed after the resin film having adhesive property is hardened.

Abstract: A liquid discharge head includes a first bubbling chamber, a second bubbling chamber arranged thereon, and a discharge port portion communicated with the second bubbling chamber with a difference in level. The sidewalls of the second bubbling chamber contract in the direction toward the discharge port at an inclination of 10 to 45°. On the circumferential portion of the upper face of the first bubbling chamber in contact with an opening communicated with the second bubbling chamber, an extrusion is formed continuously to surround the opening, in the direction toward the main surface of the element base plate.

Abstract: A liquid discharging method for a liquid head discharge head, which is provided with a plurality of discharge ports for discharging liquid, a plurality of liquid flow paths communicated always with each of the discharge ports at one end, each having bubble generating area for creating bubble in liquid, bubble generating means for generating energy to create and grow the bubble, a plurality of liquid supply ports each arranged for each of the liquid flow paths to be communicated with common liquid supply chamber, and movable member supported with minute gap to the liquid supply port on the liquid flow path side, and provided with free end, the area of the movable member surrounded at least by the free end portion and both sides continued therefrom being made larger than the opening area of the liquid supply port facing the liquid flow path, comprises the step of setting a period for the movable member to close and essentially cut off the opening area during the period from the application of driving voltage to

Abstract: A liquid discharging method for a liquid head discharge head, which is provided with a plurality of discharge ports for discharging liquid, a plurality of liquid flow paths communicated always with each of the discharge ports at one end, each having bubble generating area for creating bubble in liquid, bubble generating means for generating energy to create and grow the bubble, a plurality of liquid supply ports each arranged for each of the liquid flow paths to be communicated with common liquid supply chamber, and movable member supported with minute gap to the liquid supply port on the liquid flow path side, and provided with free end, the area of the movable member surrounded at least by the free end portion and both sides continued therefrom being made larger than the opening area of the liquid supply port facing the liquid flow path, comprises the step of setting a period for the movable member to close and essentially cut off the opening area during the period from the application of driving voltage to

Abstract: A liquid discharge head is provided with discharge ports for discharging liquid, liquid flow paths communicated with the discharge ports for supplying liquid to the discharge ports, a substrate having heat generating members for creating bubbles in the liquid, and movable members facing the heat generating members and being arranged in the liquid flow paths. The movable members have a free end on the discharge port side with a specific gap with respect to the heat generating members. The movable member is fixed to the substrate above the heat generating member on the substrate.

Abstract: A recording apparatus includes a recording unit for effecting recording on a recording medium, and a conveying unit for conveying the recording medium. The recording apparatus further includes a power input terminal adapted to be switched ON/OFF by the ignition key switch of an automobile, and a controller for executing the operation sequence of the recording apparatus in accordance with the ON/OFF state of the power input terminal. In addition, a method of controlling the above-described recording apparatus includes executing the operation sequence of the recording apparatus in accordance with the ON/OFF state of the power input terminal switched ON/OFF by the ignition key switch of an automobile.

Abstract: There is disclosed a solid semiconductor element which very efficiently detects information about a liquid and bidirectionally exchanges the information with the outside. The solid semiconductor element is disposed in a liquid container, and includes at least energy converting unit, information acquiring unit, and information communicating unit. The energy converting unit converts an electromotive force from the outside to a power, and operates the information acquiring unit and information communicating unit. The information acquiring unit acquires the information about the liquid in which the solid semiconductor element is disposed from the liquid, and the information communicating unit transmits the information acquired by the information acquiring unit to the outside.

Abstract: The invention provides a liquid discharge head, a substrate for the head, a liquid discharge method, and a liquid discharge apparatus, in which a high gradation can be easily obtained and simplification of a circuit formation and miniaturization of a recording head can be achieved. According to the present invention, a liquid discharge head comprises a heat generating element for generating thermal energy which is used for discharging liquid from a discharge port, and a protective layer for protecting the heat generating element, provided on the heat generating element. In the discharge head, the protective layer has a first region with a substantially uniform and desired thickness and a second region with a substantially uniform thickness thinner than said desired thickness, the volume of liquid droplets discharged from the discharge port is changed by changing electric energy applied to the heat generating element.

Abstract: A recording apparatus includes a recording unit for effecting recording on a recording medium, and a conveying unit for conveying the recording medium. The recording apparatus further includes a power input terminal adapted to be switched ON/OFF by the ignition key switch of an automobile, and a controller for executing the operation sequence of the recording apparatus in accordance with the ON/OFF state of the power input terminal. In addition, a method of controlling the above-described recording apparatus includes executing the operation sequence of the recording apparatus in accordance with the ON/OFF state of the power input terminal switched ON/OFF by the ignition key switch of an automobile.

Abstract: A liquid discharge head comprises first and second substrates which are to be mutually adjoined to form plural liquid paths respectively communicating with plural discharge apertures. The first substrate is provided with energy conversion elements, for converting electrical energy into energy for discharging liquid in the liquid paths, respectively corresponding to the liquid paths. The second substrate is provided with detection elements, for detecting a state of the liquid in said liquid paths, respectively corresponding to the liquid paths, and amplification means for respectively amplifying outputs of said detection elements.

Abstract: To supply electromotive force to a solid semiconductor element in an ink tank in a non-contact and stable manner. An electromagnetic apparatus (a standstill electromotive force supply unit) is placed at a home position HP. When a carriage is at a standstill at this home position HP, if the electromagnetic apparatus is AC-driven, magnetic properties of both ends (magnetic poles) continue to change mutually and penetrate a solid semiconductor element in the ink tank on the carriage so that a constantly changing magnetic flux is generated. Electromotive force is generated by electromagnetic induction on a coil of the solid semiconductor element. In addition, if the carriage reciprocates during printing operation, the coil L of the solid semiconductor element crosses inside the magnetic flux due to a plurality of permanent magnets (a movement time electromotive force supply unit) arranged on a carrier path (range of movement), and so the electromotive force is generated on the coil by electromagnetic induction.

Abstract: The present invention discloses a method of producing a liquid flow path shape capable of refilling ink at a high speed by optimizing a three-dimensional shape of the liquid flow path and suppressing the vibration of a meniscus and a head thereof. According to the invention, a pattern to form the liquid flow path to be formed on a substrate with a heater is formed by a positive photosensitive material in a two-layered structure of upper and lower layers, and the lower layer is used for forming the liquid flow path after being thermally crosslinked.

Abstract: In an liquid discharging head used in an ink-jet recording apparatus, in order to prevent damage of a face surface of orifices and degradation of a blade and maintain orifices in an excellent state preventing adherence of contamination to the face surface for a long time, the face surface is coated with a material having an ultrahigh water-repellent property.

Abstract: A liquid discharge head which is inexpensive, accurate, and highly reliable, and a method of manufacturing such a liquid discharge head are provided. On a substrate, a thermal crosslinking positive photosensitive material layer (a first positive photosensitive material layer) and a second positive photosensitive material layer are formed. First a pattern is formed on the second positive photosensitive material layer, then another pattern is formed on the first positive photosensitive material layer. Next, a negative resin for forming a liquid channel wall is laminated on the patterned first and second positive photosensitive material layers. A discharge port is formed in the negative resin layer and then the positive photosensitive material layers are removed.

Abstract: The invention is to provide a method for producing a fine structured member and a fine hollow structure, useful for producing a liquid discharge head which is inexpensive, precise and highly reliable, also to provide a method for producing a liquid discharge head utilizing such producing method for the fine structured member and the fine hollow structure and a liquid discharge head obtained by such producing method.

Abstract: A solid type semiconductor device comprises energy converting means for converting energy from outside, and operating means operated by energy converted by the energy converting means. The energy converting means converts the electromotive force supplied from the outside to the device in non-contact into electric power. The operating means comprises information acquiring means actuated by electric power obtained by energy converting means; discriminating means; information accumulating means; and information communicating means.