Abstract: An ink container for containing ink to be supplied to an ink jet head to which the ink container is detachably mountable, includes an ink supply port for supplying the ink to the ink jet head; a air vent for fluid communication with ambience; a claw-like projection provided on a first side of the ink container; a latching lever provided on a second side opposite from the ink container, the latching lever being resiliently supported on the ink container and having a latching claw.

Abstract: An ink jet recording head includes at least three nozzle array groups, each including at least two nozzle arrays with an ink supply port interposed therebetween and each ejecting a different ink. Opening areas of the ejection outlets of the nozzle arrays in each array group are of different sizes. Two adjacent nozzle array groups each include three nozzle arrays. The nozzle array group not identified as one of the two adjacent nozzle array groups is supplied with ink having a highest lightness among the three kinds of inks.

Abstract: An ink container for containing ink to be supplied to an ink jet head to which the ink container is detachably mountable, includes an ink supply port for supplying the ink to the ink jet head; a air vent for fluid communication with ambience; a claw-like projection provided on a first side of the ink container; a latching lever provided on a second side opposite from the ink container, the latching lever being resiliently supported on the ink container and having a latching claw.

Abstract: A liquid discharge head includes a liquid discharge substrate containing an energy generating element and a liquid discharge port, a flow path member of a resinous material fixed to the liquid discharge substrate and having at least a liquid supply path, a sealing material of a resinous material, a concave part, and a support substrate, wherein a distance L1 from a lateral face of the concave part of the flow path member to an end of the support substrate, a distance L2 from the lateral face of the concave part to a lateral face of the liquid discharge substrate, a linear expansion coefficient E1 of the flow path member and a linear expansion coefficient E2 of the sealing material satisfy a relation: L1×E1>L2×E2.

Abstract: Disclosed is a printing head having connection terminals for performing an electrical connection of signals including drive signals of print elements by contacting connection terminals in an apparatus side when the head is mounted onto an ink jet printing apparatus. It is made to guarantee connections of all terminals by detecting contacts of a part of terminals. Among the terminals in the head, terminals whose distances from the connection terminals in the printing apparatus become maximum when a deviation occurred in the mounting, are used as terminals for contact detection. For example, from among the connection terminals arranged in a planar area, which is rectangular-shaped, terminals positioned in corners are used as the terminals for the contact detection. When the contacts of these terminals are detected, the connections of all the terminals inside the area can be guaranteed.

Abstract: There is provided a printing head in which a printing element substrate is hard to be deformed even if the printing head falls by mistake. The printing head comprises an element substrate in which an energy generating element for generating energy used for ejecting ink is provided, a first sheet-shaped portion to which the element substrate is provided, a second sheet-shaped portion provided away from the first sheet-shaped portion at an opposite side to a direction of ejecting the ink in relation to the first sheet-shaped portion, and a sheet-shaped wall member connecting the first sheet-shaped portion to the second sheet-shaped portion, wherein the wall member has a thickness of a portion connected to the second sheet-shaped portion, which is larger than a thickness of a portion connected to the first sheet-shaped portion.

Abstract: There is provided a printing head, enabling to suppress the occurrence of cracks in a printing element substrate, even if the printing head is erroneously fallen. The printing head comprises: a printing element substrate, an ink flow passage and a sheet-shaped portion comprising a rectangular major surface. A rear surface side of the major surface of the sheet-shaped portion is provided with a space formed separately from the ink flow passage. A surface adjacent to the major surface is provided with an opening of the space formed therein, and wherein the sheet-shaped portion is provided with a concave portion formed on the rear surface side of two regions between the printing element substrate and two corner portions arranged proximate to the opening in the major surface.

Abstract: The printing head has connection terminals for performing an electrical connection of signals including drive signals of print elements by contacting connection terminals on an apparatus side when the head is mounted onto an ink jet printing apparatus. Connections of all terminals can be guaranteed by detecting contacts of a part of terminals. Among the terminals in the head, terminals whose distances from the connection terminals in the printing apparatus become maximum when a deviation occurred in the mounting are used as terminals for contact detection. For example, from among the connection terminals arranged in a planar area, which is rectangular-shaped, terminals positioned in corners are used as the terminals for the contact detection. When the contacts of these terminals are detected, the connections of all the terminals inside the area can be guaranteed.

Abstract: An ink jet recording head includes at least three nozzle array groups; each of the nozzle array group including, a first nozzle array including a plurality of ejection outlets for ejecting ink, and a second nozzle array including a plurality of ejection outlets for ejecting the ink, the second nozzle array being disposed adjacent to the first nozzle array with an ink supply port for supplying the ink interposed therebetween, wherein an opening area of the ejection outlets of second nozzle array is smaller than an opening area of the ejection outlets of first nozzle array, wherein the nozzle array groups eject three different kinds of inks, respectively, when the ink jet recording head moves relative to a recording material, wherein the nozzle arrays of adjacent ones of the nozzle array group are arranged in the order of the first nozzle array of one of the adjacent nozzle array groups, the second nozzle array of the one of the adjacent nozzle array groups, the second nozzle array of the other one of the adjac

Abstract: An ink jet recording head is provided with one heat generating member in each of ink flow paths, and the discharge port thereof is arranged on the extended line extending in the normal direction from the center of the main surface of the heat generating member to the surface of the substrate. Then, on the surface of the substrate, non-bubbling area is provided on the center within the projected area having the discharge port projected thereon. Bubble brought to the boil by the heat generating member pushes out ink from the discharge port by the pressure exerted by the bubble, while being communicated with the outside. With the structure thus arranged, it is made possible to enhance the precision of discharge direction of the liquid droplet discharged from the discharge port.

Abstract: A method for discharging liquid from a recording head including a first discharge port configured to discharge a liquid, a second discharge port configured to discharge a liquid, an amount of which is smaller than an amount of the liquid discharged from the first discharge port, and a substrate including a first heating element corresponding to the first discharge port, a second heating element corresponding to the second discharge port and the liquid supply port, wherein a distance between the liquid supply port and the second heating element is longer than a distance between the liquid supply port and the first heating element, and wherein discharge of the liquid from the first discharge port is performed by a discharge method in which a bubble formed by the first heating element communicates with atmosphere and an amount of the liquid discharged from the second discharge port is less than 2 pico liters.

Abstract: An ink jet head includes an elongated ink supply port extending in a longitudinal direction and a plurality of head groups arranged in a transverse direction crossing with the longitudinal direction. A first array of ink ejection outlets is disposed along one lateral side of an ink supply port, and second and third arrays of ink ejection outlets are disposed along the other lateral side of the ink supply port, wherein widths L2, measured in the longitudinal direction, of partition walls for the first array of the ink ejection outlets are larger than widths L1, measured in the longitudinal direction, of partition walls of the second and third arrays of the ink ejection outlets. The ink jet head further includes a sealing tape for protecting the ejection outlets, the sealing tape being peelable in a direction from the second or third array toward the first array.

Abstract: An ink container for containing ink to be supplied to an ink jet head to which the ink container is detachably mountable, includes an ink supply port for supplying the ink to the ink jet head; a air vent for fluid communication with ambience; a claw-like projection provided on a first side of the ink container; a latching lever provided on a second side opposite from the ink container, the latching lever being resiliently supported on the ink container and having a latching claw.

Abstract: An inkjet printing cartridge capable of ejecting miniaturized ink droplets in a stable manner while avoiding the complexity of the structure and control as well as suppressing the cost rise. For this purpose, the inkjet printing cartridge is formed of a material having the permeability to liquid and gas, and the ink supply path for supplying ink to the ejection opening having a relatively small ejection amount is arranged adjacent to other ink supply paths via walls.

Abstract: An ink container for containing ink to be supplied to an ink jet head to which the ink container is detachably mountable, includes an ink supply port for supplying the ink to the ink jet head; a air vent for fluid communication with ambience; a claw-like projection provided on a first side of the ink container; a latching lever provided on a second side opposite from the ink container, the latching lever being resiliently supported on the ink container and having a latching claw.

Abstract: An ink container for containing ink to be supplied to an ink jet head to which the ink container is detachably mountable, inclues an ink supply port for supplying the ink to the ink jet head; a air vent for fluid communication with ambience; a claw-like projection provided on a first side of the ink container; a latching lever provided on a second side opposite from the ink container, the latching lever being resiliently supported on the ink container and having a latching claw.

Abstract: An ink container for containing ink to be supplied to an ink jet head to which the ink container is detachably mountable, includes an ink supply port for supplying the ink to the ink jet head; a air vent for fluid communication with ambience; a claw-like projection provided on a first side of the ink container; a latching lever provided on a second side opposite from the ink container, the latching lever being resiliently supported on the ink container and having a latching claw.

Abstract: An ink jet recording head includes three sets of nozzle arrays each having a large nozzle array including a first ejection outlet group and an adjacent small nozzle array including a second ejection outlet group. The ejection outlets of the second ejection outlet group have smaller diameters than those of the first ejection outlet group. In nozzle arrays constituted by two adjacent ones of the three nozzle array sets, a large nozzle array, a small nozzle array, a small nozzle array, and a large nozzle array are arranged in the order named, in the main scanning direction. One of the two adjacent nozzle array sets ejects cyan ink, the other one of the two adjacent nozzle array sets ejects magenta ink, and a nozzle array set other than the two adjacent nozzle array sets ejects yellow ink.

Abstract: A liquid discharge head includes a liquid discharge substrate containing an energy generating element and a liquid discharge port, a flow path member of a resinous material fixed to the liquid discharge substrate and having at least a liquid supply path, a sealing material of a resinous material, a concave part, and a support substrate, wherein a distance L1 from a lateral face of the concave part of the flow path member to an end of the support substrate, a distance L2 from the lateral face of the concave part to a lateral face of the liquid discharge substrate, a linear expansion coefficient E1 of the flow path member and a linear expansion coefficient E2 of the sealing material satisfy a relation: L1×E1>L2×E2.

Abstract: An ink jet recording head having a recording element substrate including three or more discharge port arrays comprising a plurality of discharge ports and recording elements for discharging ink from the discharge ports and supplying heat to areas around the discharge ports; wherein each of the discharge port arrays matches one or another of a plurality of types of ink whose viscosity decreases with a rise in temperature, and the discharge port arrays matching the most viscous of the inks to be discharged being arranged between other discharge port arrays to enable ink drips to be discharged stably, and an ink jet recording apparatus using the same are to be provided.

Abstract: A machine includes a pair of spaced supports, one of which may mount an operator such as a tool in a spindle and the other of which may mount an object such as a workpiece. The spaced platforms are joined by six powered and extensible legs joined to the respective platforms by universal joints. The length of the legs is individually manipulated to vary the position of the platforms and therefore the object and operator relative to each other in six axes. The powered legs may be hydraulic cylinders or recirculating ball screw driven. The distance between the spaced platforms may be measured by separate instrument arms which join the platforms. The instrument arms may use a digital position device to measure the extension and contraction of the instrument arms or may use a laser interferometer for that purpose. The changes in the instrument arm's lengths may be used to generate signals which are used to control the extension and contraction of the powered legs.