Abstract: A recording apparatus using a recording head to effect recording on a recording material includes a recording head unit provided with a recording head for effecting recording on a recording material including a recording head supporting member for supporting the recording head at a predetermined position; a relaying electric contact member including a first electric contact member for external electric connection; a second electric contact for electrically connecting the first electric contact member with the recording head; and an electric current supplying device for supplying electric current to the first electric contact member.

Abstract: An ink jet head for ejecting ink, has an ink ejecting portion having an ink ejecting port formed thereon so as to eject ink through the ink ejecting port, a positioning portion for definitely determining the position of the ink jet head relative to an apparatus using the ink jet head when the ink jet head is fitted to the apparatus, an ink supplying portion adapted to be connected an ink supplying unit while ink is supplied to the ink jet head, and an electric connecting portion adapted to be electrically connected to an electric connecting portion on the apparatus side so as to send and receive signals. The positioning portion, the ink supplying portion and the electric connecting portion are disposed on a different surface from a surface on which the ink ejecting portion is disposed and at least one of the electric portion and the ink supplying portion is disposed on an opposite side surface to a surface on which the positioning portion is disposed.

Abstract: An ink jet cartridge includes a first chamber for accommodating a negative pressure producing material and provided with air communication part for communication with ambient air, wherein a part of the negative pressure producing material does not contain ink adjacent the air communication part; a second chamber which is substantially closed except for a fine communication part for communication with the first chamber at a position away from the air communication part, wherein the second chamber directly accommodates the ink to be supplied to the first chamber.

Abstract: A container for containing printing liquid for supplying to an ink jet head for an ink jet recording apparatus. The container includes a first chamber containing negative pressure producing material and having an air vent communicating with ambient air and a supply port for supplying printing liquid to the ink jet head. The container also includes a second chamber communicating with the first chamber via a communication port and providing a printing liquid reservoir for the first chamber. The capillary force provided by the negative pressure producing material adjacent a wall extending from the communication port and decreasing in a direction perpendicular to and towards the wall at least adjacent a part of the communication port which is uppermost in use of the container.

Abstract: A container for containing printing liquid for supplying to an ink jet head for an ink jet recording apparatus. The container includes first and second chambers, with the first chamber containing negative pressure producing material and having an air vent communicating with ambient air and a supply port for supplying printing liquid to the ink jet head. The second chamber communicates with the first chamber via a communication port and provides a printing liquid reservoir for the first chamber. In an area adjacent a wall extending from the communication port, a capillary force provided by the negative pressure producing material decreases in a direction perpendicular to and towards that wall at least adjacent a part of the communication port which is uppermost when the container is in use.

Abstract: An ink container includes an ink discharging portion for discharging ink; an air vent; first liquid absorbing material for absorbing the ink therein; and a second ink absorbing material, disposed between the air vent and the first absorbing material, for absorbing the ink. The first and second absorbing materials at least partly contact each other.

Abstract: A replaceable ink cartridge, usable with a bubble jet printer, includes a container having front, back, top bottom and side walls, the container being divided internally into a first chamber and a second chamber having a common partition extending downward perpendicularly toward the bottom wall to provide an opening between the chambers formed by the partition proximate to the bottom wall. The first chamber contains a reservoir of liquid ink and is generally sealed from ambient air except through the opening, and the second chamber has an air vent for admitting ambient air into the second chamber and an ink supply outlet in the front wall.

Abstract: A package material for accommodating a container cartridge provided with an ink supply portion integral with a recording head in use includes a package material for accommodating the container cartridge, provided with opening means for permitting opening of the package material; a sealing material for sealing an ink supply portion of the container cartridge; wherein the sealing member is at least partly mounted to the package material.

Abstract: An ink container includes an ink discharging portion for discharging ink; an air vent; first liquid absorbing material for absorbing the ink therein and; a second ink absorbing material, disposed between the air vent and the first absorbing material, for absorbing the ink. The first and second absorbing materials at least partly contacting each other.

Abstract: A method of making a replaceable ink cartridge uses a molded, one-piece container body with an open bottom, elongated front, back and top walls, two side walls providing major surfaces of the cartridge, and a partition attached to the side walls and extending from the top wall toward the open bottom to divide the container body into first and second compartments. A sponge-like absorbent material is inserted into the second compartment through the open bottom, which is then sealed with a bottom wall, so that the cartridge has first and second chambers communicating with each other through an opening formed by a gap between the partition and the bottom wall.

Abstract: A photopolymerizable adhesive comprises (A) an acrylic resin having groups represented by the formulae: --COOH, --OH and --NHCH.sub.2 OR (wherein R represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms), a number average molecular weight of from 3,000 to 200,000 and a glass transition temperature of at least 70.degree. C., (B) a photopolymerizable oligomer containing at least one member selected from the group consisting of (a) an acrylate or a methacrylate of a novolak epoxy resin, (b) an acrylate or a methacrylate of a bisphenol epoxy resin and (c) an urethane acrylate of aromatic alcohol or cycloaliphatic alcohol, and (C) a photoinitiator capable of discharging radicals with the action of activation energy.

Abstract: An ink jet recording head unit for performing a recording operation by discharging ink is desclosed. The ink jet recording head unit includes an ink jet head portion having an ink passage communicated with a discharge port for discharging ink and a substrate having an energy generating element for causing energy for discharging ink to act on ink present in the ink passage, the ink being supplied through an ink receiving port of a connecting portion; and an ink supply member having a connecting portion to be connected to the ink jet head portion so as to supply ink to the ink jet head portion via the connecting portion.

Abstract: An ink jet recording head comprises a plurality of ink discharge ports for discharging ink, a plurality of ink paths each communicating with one of the discharge ports and a thermal energy generating device provided in each ink path for generating thermal energy to be applied to the ink. The discharge ports are so arranged that the opening areas of the liquid discharge ports located at both end regions in an arrangement direction of the discharge ports are larger than that of the liquid discharge ports located at a central region. Inconsistencies in the size of ink droplets discharged from the discharge ports, can, therefore, be prevented. Such size differentials could have occurred due to the difference of viscosity that is caused because the temperature of the ink is higher at the central region and lower at both end regions. A recorded image having no unevenness in recording density can be formed.

Abstract: A liquid jet recording head comprises a recording apparatus having an orifice for discharging liquid and an energy generator for generating energy to discharge the liquid. Each recording head has an engaging member which is of complementary contour to an engaging member of another recording head. The engaging members are disposed in a different location on each recording head so that recording heads for different colors are located properly in the apparatus.

Abstract: An ink jet recording apparatus includes an ink tank and an ink bladder for containing ink disposed in the tank. An ink path directs ink in the ink bladder outwardly therefrom, and a closure member for closing the ink path comprises at least two sealing materials having different functions. A housing member houses the ink bladder and the closure member, and an ink supply system having a hollow needle supplies ink to a recording head for discharging the ink.

Abstract: A flat bed knitting machine having a pair of yarn support racks on opposite sides of the knitting section of its needle bed, each support rack having a plurality of holders each adapted to detachably hold one of a plurality of yarns. Each yarn has a pair of associated holders with one holder being positioned in each support rack. The holders are individually actuatable between transfer and withdrawn positions. A controller is provided to actuate the holders and move the carriage back and forth in response to stored information in order to preset the yarns into predetermined initial positions that are desired to commence knitting.

Abstract: In an ink container having a container for storing ink therein, and an outlet pipe for directing the ink in the container outwardly thereof, the outer end portion of the outlet pipe is mounted on a sealing elastic member formed by a dual structure comprising an elastic member of low gas permeability and an elastic member of small permanent set to thereby seal the container.