Abstract: In an ink set having a plurality of inks, the ink set has at least a pigment ink and a dye ink. The pigment ink contains at least water, a surfactant, a self-dispersion pigment, and a poor medium for self-dispersion pigment and/or a salt; a dynamic surface tension of the pigment ink at a lifetime of 50 milliseconds is higher than 47 mN/m. The dye ink contains at least water, a surfactant and a dye. An ink set is provided which can obtain images having a high image density and a superior bleeding resistance without regard to the types of recording mediums.

Abstract: A present invention improves the impact accuracy of ejected droplets, the quality of printed images, and print speed. A print head according to the present invention has an ink channel for which the width thereof in a direction orthogonal to an ink supply direction in which ink is supplied from an ink supply port to a pressure chamber is smaller than that of a pressure chamber. In the print head, the center of a heater along the ink supply direction is offset from the center of the pressure chamber along the ink supply direction, toward the side of the pressure chamber far from the ink supply port in the ink supply direction.

Abstract: The present invention provides an ink jet ink, which gives a superior lightfastness to an ink image, has a superior sticking resistance and intermittent ejection stability, and gives a preferable color tone to the image. The ink includes an azo-based dye represented by formula (I) and a water-soluble organic solvent represented by bis(2-hydroxyethyl)sulfone represented by formula (II).

Abstract: An ink jet ink providing an image having excellent lightfastness and having sticking resistance and intermittent ejection stability. The ink jet ink is characterized by containing at least a compound represented by the following general formula (I) and a compound represented by the following general formula (II).

Abstract: A method for producing a conjugated linoleic acid glyceride in the form of an ester bond of a conjugated linoleic acid with glycerol, involving reacting a starting material containing a linoleic acid glyceride with a microorganism or an enzyme generated by the microorganism which has a potency to isomerize the linoleic acid glyceride into a conjugated linoleic acid glyceride.

Abstract: A joint member is made of an elastic member whose cross sectional shape is an almost M-character shape and which has: an inserting portion formed with an opening portion and a slit; an outer edge portion as an outer peripheral portion of the joint member; and a supporting fixing portion for coupling the inserting portion and the outer edge portion on the upper portion side. A cross sectional shape of an opening of the opening portion is a shape of a circular cone frustum in which the opening and a bottom surface are coupled via an inclined surface. The slit is formed in the rectangular bottom surface. The joint member is sandwiched between a casing and a pressing plate. The inserting portion and the supporting fixing portion exist in planes which are different in the inserting direction of a liquid supply needle.

Abstract: An inkjet head includes a recording element substrate, on which sets of energy generating elements generating energy to discharge ink and a supply port supplying ink to discharge ports are arranged, and an orifice plate including the discharge ports. The sets include a set having a first supply port disposed at a first edge of the substrate and a set having a second supply port disposed at a second edge of the substrate opposite the first edge. The distance between the second edge and the second supply port is shorter than the distance between the first edge and the first supply port. A contact area between the substrate and second channel walls that form second ink channels communicating with the second supply port is larger than the contact area between the substrate and first channel walls that form first ink channels communicating with the first supply port.

Abstract: An inkjet recording head includes a recording-element substrate having arranged therein multiple sets of nozzles that discharge ink, energy-generating elements that generate energy used for discharging the ink, and supply ports that supply the ink to the nozzles; and a sealant disposed around the recording-element substrate. The supply ports include a first supply port disposed near a first edge of the recording-element substrate and a second supply port disposed near a second edge of the recording-element substrate, the second edge being opposite to the first edge as viewed in the arrangement direction of the multiple sets. As viewed in the arrangement direction, a distance between the second edge and the second supply port is shorter than a distance between the first edge and the first supply port, and a volume of the sealant near the second edge is smaller than a volume of the sealant near the first edge.

Abstract: The present invention makes it possible to improve the alignment accuracy of the joint section of an ink cartridge with an ink supply route of an inkjet head. Based on this, the present invention provides an ink cartridge capable of preventing ink leakage with high reliability and constructed inexpensively in a reduced size and particularly suitable for a pit-in system. To attain this, distance (L1) is set to be shorter than distance (L2), where the distance (L1) is the one between a joint section (145) positioned in the proximity of a front surface (1A) of an ink cartridge (1) and an engage reference portion (135) serving as a reference position when the ink cartridge (1) is installed in the inkjet printing apparatus; and the distance (L2) is the one between the front surface (1A) of the ink cartridge (1) and the engage reference portion (135).

Abstract: An aqueous ink to be used together with a pigment ink containing a pigment and a polymer, wherein the aqueous ink contains a reactive component for destabilizing the dispersion state of the pigment, the dynamic surface tension of the aqueous ink at a lifetime of 30 milliseconds is 41 mN/m or more, and the dynamic surface tension of the aqueous ink at a lifetime of 500 milliseconds is from 28 mN/m or more to 38 mN/m or less as determined by a maximum bubble pressure method.

Abstract: An ink set is provided which can suppress bleeding irrespective of the type of recording medium. The ink set includes a plurality of aqueous inks each containing a dye, and has at least a first aqueous ink containing a dye, wherein the difference between the dynamic surface tension of the first aqueous ink at a lifetime of 50 milliseconds and the dynamic surface tension of the first aqueous ink at a lifetime of 500 milliseconds is 7 mN/m or more; and, between the first aqueous ink and at least one type of aqueous ink except the first aqueous ink included in the ink set, dynamic surface tension ?a (mN/m) of an ink A having relatively higher lightness at a lifetime of 500 milliseconds and dynamic surface tension ?b (mN/m) of an ink B having relatively lower lightness at a lifetime of 500 milliseconds satisfy ?5?(?a??b)?3.

Abstract: An aqueous ink used together with a black ink containing a self-dispersion pigment, wherein the aqueous ink contains a reactive component for destabilizing the dispersion state of the self-dispersion pigment, the dynamic surface tension of the aqueous ink at a lifetime of 30 milliseconds is 41 mN/m or more, and the dynamic surface tension of the aqueous ink at a lifetime of 500 milliseconds is from 28 mN/m or more to 38 mN/m or less as determined by a maximum bubble pressure method.

Abstract: In an ink set having a plurality of inks, the ink set has at least a pigment ink and a dye ink. The pigment ink contains at least water, a surfactant, a self-dispersion pigment, and a poor medium for self-dispersion pigment and/or a salt; a dynamic surface tension of the pigment ink at a lifetime of 50 milliseconds is higher than 47 mN/m. The dye ink contains at least water, a surfactant and a dye. An ink set is provided which can obtain images having a high image density and a superior bleeding resistance without regard to the types of recording mediums.

Abstract: An ink jet recording head includes a element substrate; a plurality of ejection outlets, provided on the element substrate, for ejecting ink in a direction perpendicular to the element substrate; and a nozzle formation member having a plurality of ink flow paths which are in fluid communication with the ejection outlets, respectively; wherein the ink flow paths are arranged at a density higher than 1200 dpi in an arranging direction of the ejection outlets; wherein widths of flow passage walls forming the ink flow paths are smaller than heights of the ink flow paths and are smaller than widths of the ink flow paths.

Abstract: An ink cartridge which is detachably mountable to a liquid ejection type recording device including a liquid ejecting head for ejecting liquid onto a recording material while scanning the recording material in a direction crossing with a feeding direction of the recording material, and a recovery unit for sucking the liquid through a nozzle of the liquid ejecting head. The ink cartridge includes a receiving portion for receiving the liquid discharged from the liquid ejecting head by the recovery unit; a liquid containing portion for accommodating the liquid to be supplied to the liquid ejecting head; and a connecting portion for connecting the receiving portion and the suction recovery unit, wherein the connecting portion is disposed at a position upstream of a front end surface portion of the ink cartridge with respect to an inserting direction in which the ink cartridge is inserted into the liquid ejection type recording device.

Abstract: A conjugated fatty acid such as the cis-9, trans-11 isomer of conjugated linoleic acid having high bioactivities is selectively and efficiently produced by conjugating an unsaturated fatty acid having at least two double bonds with the use of viral cells, dead cells or a cell extract of at least one bacterium selected from the group consisting of Lactobacillus oris, Lactobacillus pontis, Lactobacillus panis, Bifidobacterium breve, Bifidobacterium bifidum, Bifidobacterium infantis and Bifidobacterium pseudocatenulatum, or an enzyme derived from the bacterium.

Abstract: The present invention solves problems attributable to color mixing occurring at a region where an ink container containing three or more different inks and an inkjet printing head are connected as a result of repetition of connection and disconnection of the components. An ink cartridge has a joint section which is connected to a printing head unit when the inks are supplied to the printing head unit. The printing head unit performs printing by ejecting the cyan, magenta, and yellow inks. At the joint section, a supplying part for the cyan ink, a supplying part for the magenta ink, and a supplying part for the yellow ink are arranged in the order listed. The interval between the yellow ink supplying part and the magenta ink supplying part is greater than the interval between the cyan ink supplying part and the magenta ink supplying part.

Abstract: Provided herein is an aqueous ink, which is excellent in both image density and fixing ability irrespective of the kind of a recording medium even when the volume of an ink droplet is small and has such excellent properties that white stripes are not caused even when high-speed recording is conducted. The aqueous ink comprises at least water, a water-soluble organic solvent, a water-insoluble coloring material, a surfactant and a poor medium for the water-insoluble coloring material and/or a salt. The dynamic surface tension of the aqueous ink at a lifetime of 50 milliseconds determined by a maximum bubble pressure method is higher than 47 mN/m, and the dynamic surface tension at a lifetime of 5,000 milliseconds determined by the maximum bubble pressure method is 38 mN/m or lower.

Abstract: In a method of fabricating a semiconductor device having a MISFET of trench gate structure, a trench is formed from a major surface of a semiconductor layer of first conductivity type which serves as a drain region, in a depth direction of the semiconductor layer, a gate insulating film including a thermal oxide film and a deposited film is formed over the internal surface of the trench, and after a gate electrode has been formed in the trench, impurities are introduced into the semiconductor substrate of first conductivity type to form a semiconductor region of second conductivity type which serves as a channel forming region, and impurities are introduced into the semiconductor region of second conductivity type to form the semiconductor region of first conductivity type which serves as a source region.

Abstract: In a method of fabricating a semiconductor device having a MISFET of trench gate structure, a trench is formed from a major surface of a semiconductor layer of first conductivity type which serves as a drain region, in a depth direction of the semiconductor layer, a gate insulating film including a thermal oxide film and a deposited film is formed over the internal surface of the trench, and after a gate electrode has been formed in the trench, impurities are introduced into the semiconductor substrate of first conductivity type to form a semiconductor region of second conductivity type which serves as a channel forming region, and impurities are introduced into the semiconductor region of second conductivity type to form the semiconductor region of first conductivity type which serves as a source region.