Abstract: The invention provides a method for producing an ink jet recording head having a high durability and a high ink resistance and enabling a high-quality image recording by employing a material capable of reducing the internal stress and having satisfactory patterning characteristics. It also provides a method of producing such ink jet recording head with a high precision. A cationically photopolymerizable resin composition containing a condensate of a hydrolysable organosilane compound, employed as a material for forming a flow path forming member, enables a reduction of internal stress and a highly precise pattern in the flow path forming member thereby providing an ink jet recording head having a high durability and a high ink resistance and capable of high-quality printing over a prolonged time, and a producing method therefor.

Abstract: The invention provides a composite composition comprising a cationically polymerizable organic resin, a cationic photoinitiator, a hydrolysate and/or condensate of at least one hydrolysable silane compound and inorganic nanoparticles. The composite composition is suitable for the preparation of patterned moulded articles or substrates having a patterned coating, in particular by photolithography. Micropatterns obtained show improved properties, such as a high shape stability and an excellent elastic modulus.

Abstract: A polymerizable composite composition comprising a) a hydrolysate and/or condensate of at least one hydrolysable alkylsilane having at least one alkyl group, at least one hydrolysable arylsilane having at least one aryl group or at least one hydrolysable alkylarylsilane having at least one alkylaryl group, and at least one hydrolysable silane containing an epoxy group, b) at least one organic compound having at least 2 epoxy groups, and c) a cationic initiator, is suitable to provide, upon curing, substrates with a patterned coating or patterned moulded articles. The patterned coatings and moulded articles obtained show high relaxation ability, high chemical resistance and mechanical stability. Micropatterns can be obtained with high stability of shape.

Abstract: There is disclosed an ink jet recording head in which an image having a high quality level can be recorded for a long period of time by use of a material having a reduced linear expansion coefficient and a satisfactory patterning characteristic. The liquid discharge head comprises: an energy generating element which generates energy for discharging a liquid; a discharge port which discharges the liquid; and a flow path forming member to form a flow path which supplies the liquid to the discharge port, the flow path forming member being formed of a cured material of a resin composition including a cationic polymerizable resin, a cationic photopolymerization initiator, a condensation product of hydrolyzable organic silane compounds, and inorganic fine particles having an average particle diameter of 50 nm or less.

Abstract: The present invention has as its object to provide a pattern forming method which, even if a pattern is formed by photolithography, can keep the edge of the opening portion of the pattern in a sharp state and yet, can make the wall surface of the recess of the pattern into a tapered shape, and a method of manufacturing an ink jet recording head to which the aforedescribed method is applied.

Abstract: An ink jet head is formed with a nozzle surface having a liquid repellent characteristic. The nozzle surface comprises a condensation product made from a hydrolyzable silane compound having a fluorine containing group and a hydrolyzable silane compound having a cationic polymerizable group.

Abstract: A coating composition comprising a) a condensation product of at least one hydrolyzable silane having a fluorine-containing group and at least one hydrolyzable silane having a cationically polymerizable group, and b) a cationic initiator, provides, upon curing, substrates with an alkali-resistant, liquid-repellent coating.

Abstract: A cationically polymerizable composite coating composition comprising: a) a condensation product of at least one hydrolyzable silane having a fluorine-containing group, b) at least one cationically polymerizable organic resin, and c) a cationic initiator, provides, upon curing, substrates with an alkali-resistant, liquid-repellent coating. The composite coating composition may be used in pattern forming methods.

Abstract: An ink jet head is formed of a nozzle material compound of a condensation product comprising a hydrolysable silane compound having a fluorine-containing group and a photo-polymerizable resin composition.

Abstract: The invention provides a wiper blade member maintaining a high water repellency even for a pigment ink, and an ink jet recording apparatus equipped with such wiper blade member. The wiper blade member of the invention for eliminating a deposition an ink discharge face of the ink jet recording head is made water repellent by a condensate of a fluorine-containing hydrolysable compound. The condensate increases a fluorine content significant and shows a strong adhesion a substrate (blade) by the presence of the hydrolysable group. It strongly adhered to the substrate by a condensation reaction only by a hydrolysis, but the adhesion can be further improved by a photo- or thermocuring. The curing reaction can be executed at a relatively low temperature, without causing a damage to the blade constituting the substrate.

Abstract: The present invention has as its object to provide a pattern forming method which, even if a pattern is formed by photolithography, can keep the edge of the opening portion of the pattern in a sharp state and yet, can make the wall surface of the recess of the pattern into a tapered shape, and a method of manufacturing an ink jet recording head to which the aforedescribed method is applied.

Abstract: A liquid jet recording head comprises a constituting member formed from a cured product of a resin composition comprising (1) a curable epoxy compound, (2) a compound having a functional group reactive to the curable epoxy compound and a fluorocarbon moiety, and (3) a curing agent.

Abstract: A method for making a through-hole in a silicon substrate includes the steps of forming a high-impurity-concentration region in the periphery of a through-hole-forming region at a first surface of the silicon substrate, forming an etching stop layer over the through-hole-forming region and the high-impurity-concentration region, forming a mask layer having an opening at a second surface of the silicon substrate, etching the silicon substrate at the opening through the mask layer until the etching stop layer is exposed to the second surface, further etching the silicon substrate until the etched portion extends to the high-impurity-concentration region, and removing the etching stop layer at least at the portion exposed to the second surface. Also disclosed is an ink-jet printer head including an ink supply port fabricated using the method for making the through-hole.

Abstract: Provided is a resist material that comprises a polymer compound represented by the following general formula (I): where R1 and R2 are each independently a hydrogen atom or an alkyl group; R3 and R4 are each independently an alkyl group; m and n are positive integers.

Abstract: A method for manufacturing an ink jet head, which is provided with a discharge port member having discharge ports arranged for discharging ink, comprises the step of forming the discharge port member by a first photosensitive resin layer, and a second photosensitive resin layer having water-repellency, which is laminated on the first photosensitive resin layer, and the step of giving pattern-exposure and development to these layers for the formation of a structure having the portion where both the first photosensitive resin layer and the second photosensitive resin layers are removed, and the portion where the second photosensitive resin layer is partially removed.

Abstract: A method for making a through-hole in a silicon substrate includes the steps of forming a high-impurity-concentration region in the periphery of a through-hole-forming region at a first surface of the silicon substrate, forming an etching stop layer over the through-hole-forming region and the high-impurity-concentration region, forming a mask layer having an opening at a second surface of the silicon substrate, etching the silicon substrate at the opening through the mask layer until the etching stop layer is exposed to the second surface, further etching the silicon substrate until the etched portion extends to the high-impurity-concentration region, and removing the etching stop layer at least at the portion exposed to the second surface. Also disclosed is an ink-jet printer head including an ink supply port fabricated using the method for making the through-hole.

Abstract: A method for manufacturing an ink jet head, which is provided with a discharge port member having discharge ports arranged for discharging ink, comprises the step of forming the discharge port member by a first photosensitive resin layer, and a second photosensitive resin layer having water-repellency, which is laminated on the first photosensitive resin layer, and the step of giving pattern-exposure and development to these layers for the formation of a structure having the portion where both the first photosensitive resin layer and the second photosensitive resin layers are removed, and the portion where the second photosensitive resin layer is partially removed. With this method, the water-repellent area and non-water-repellent area can be provided for the nozzle surface, hence making it possible to form on the nozzle surface of an ink jet head the water-repellent area and hydrophilic area in exact positioning precision without increasing the number of processing steps.

Abstract: Provided is a resist material that comprises a polymer compound represented by the following general formula (I): 1

Abstract: A liquid jet recording method includes applying thermal energy to liquid in a liquid passage to produce film boiling of the liquid to produce a. bubble; permitting the bubble to communicate with ambience; wherein the liquid passage is not blocked in the communicating step.

Abstract: A process for producing an ink jet head having an ink pathway communicating with a discharging outlet and an energy generating element for generating energy utilized for discharging ink.