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: The ink-contacting thermoplastic elastomer composition for an ink jet printer of the present invention contains: a styrene-isoprene-styrene block copolymer (SIS) in which at least part of isoprene blocks are formed of 3,4-polyisoprene; a styrene-ethylene/butylene-styrene block copolymer (SEBS); a polyolefin; and a polybutene.

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 tank capable of optically detecting ink remaining in an ink accommodation chamber with high precision is provided. A printing apparatus, a method of manufacturing the ink tank, and a method of detecting ink remaining in the ink tank are also provided. Radiated light (11) projected into an ink accommodation chamber (5A) excites an illuminant material (10) contained in ink in the ink accommodation chamber (5A) to illuminate. Based on light (12) produced by the illuminant material (10), the amount of ink remaining in the ink accommodation chamber (5A) is detected.

Abstract: An ink tank capable of optically detecting ink remaining in an ink accommodation chamber with high precision is provided. A printing apparatus, a method of manufacturing the ink tank, and a method of detecting ink remaining in the ink tank are also provided. Radiated light (11) projected into an ink accommodation chamber (5A) excites an illuminant material (10) contained in ink in the ink accommodation chamber (5A) to illuminate. Based on light (12) produced by the illuminant material (10), the amount of ink remaining in the ink accommodation chamber (5A) is detected.

Abstract: Multiple grooves are formed along an inclination face of a prism-like part. A pitch of the grooves is smaller than the wavelength of light, specifically infrared light, used as a light source for detecting an ink amount. When sufficient amount of contained ink is consumed to expose the prism-like part, ink on the inclination face is held in the grooves due to their capillary force. At this time, if an amount of the ink exceeds the capacities of the grooves, no capillary force acts on the excessive ink. Accordingly, the excessive ink becomes an ink pool and slides down to an ink surface. Since the face provided with the grooves at the pitch smaller than the wavelength of the detection light source serves as a plane face optically, detection with high reliability is made possible.

Abstract: An ink reservoir capable of retaining ink includes a case having a polypropylene, and a fibrous absorber contained in the case, the fibrous absorber having an aggregate of fiber with a double-layer structure including a core and a sheath, the sheath being fused at intersections of fiber loops. The core has a polypropylene homopolymer having a melting point of 140° C. or more, and the sheath has an ethylene-propylene random copolymer having a melting point of less than 140° C. and a melt mass-flow rate of 7 g/10 min or more as measured at 230° C. and a load of 2.16 kg according to JIS K 7210.

Abstract: An ink tank capable of a stable ink supply to a print head uses a simple valve construction. In one preferred example, an ink path is closed by a lip portion of a valve rubber engaging a flange, and an angle formed by an inner surface of an opening in the lip portion and an engagement surface of the flange is an acute angle.

Abstract: An ink jet recording head comprises a substrate including a discharge port forming member provided with discharge ports for discharging ink, and a flow path forming member for forming an ink flow path communicating to the discharge ports, wherein at least one of the flow path forming member and the discharge port forming member contains a material having fluorine atoms, a supply path used to supply ink to a supply hole, a support member supporting the substrate, a supply path forming member for forming a part of the supply path, and a rubber member provided between the support member and the supply path forming member and forming a part of the supply path. The supply path forming member or the rubber member contains a material containing bivalent metal, and the rubber member contains a compound providing counter ions to the bivalent metal.

Abstract: A reliable ink cartridge that reduce printing nonconformity even during high speed inkjet-recording with multiple nozzles by alleviating rapid external impact applied from the outside of the ink cartridge. Within a casing of an ink cartridge, a flexible bag forming an ink reservoir is accommodated. Between the surface of the flexible bag where a sheet member is bonded and a wall surface of the casing, a stress damping chamber is provided. The stress damping chamber communicates with the atmosphere outside the ink cartridge via an orifice formed on a wall surface of the casing.

Abstract: A reliable ink cartridge that reduce printing nonconformity even during high speed inkjet-recording with multiple nozzles by alleviating rapid external impact applied from the outside of the ink cartridge. Within a casing of an ink cartridge, a flexible bag forming an ink reservoir is accommodated. Between the surface of the flexible bag where a sheet member is bonded and a wall surface of the casing, a stress damping chamber is provided. The stress damping chamber communicates with the atmosphere outside the ink cartridge via an orifice formed on a wall surface of the casing.

Abstract: The present invention provides an ink jet cartridge configured such that an absorber is housed in one space while ink is accommodated in the other space, the ink jet cartridge keeping the ink sealed during distribution. The ink jet cartridge has an ink tank portion that accommodates ink, a print head portion that ejects the accommodated ink, and an ink supply path connected between the ink tank portion and the print head portion. A seal member that seals the ink supply path is located on an ink tank portion side of the ink supply path.

Abstract: An ink jet recording head comprises a discharge port forming member that forms a discharge port used to discharge ink and a channel forming member that forms an ink channel communicating with the discharge port, at least either one of the channel forming member and the discharge port forming member comprising a substance having fluorine atoms and a rubber member composing a part of an ink passage continuous with the channel, the rubber member being cross-linked by an organic substance.

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 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 tank capable of optically detecting ink remaining in an ink accommodation chamber with high precision is provided. A printing apparatus, a method of manufacturing the ink tank, and a method of detecting ink remaining in the ink tank are also provided. Radiated light (11) projected into an ink accommodation chamber (5A) excites an illuminant material (10) contained in ink in the ink accommodation chamber (5A) to illuminate. Based on light (12) produced by the illuminant material (10), the amount of ink remaining in the ink accommodation chamber (5A) is detected.

Abstract: An ink cartridge for an ink jet recording apparatus is formed by a material including an propylene homopolymer and a nucleating agent containing a specified organic phosphoric acid ester compound. The material advantageously contains a nucleating agent of from 0.01 to 1.0 part by mass with respect to 100 parts by mass of polypropylene, and hydrotalcite as a neutralizing agent.

Abstract: An ink cartridge for an ink jet recording apparatus is formed by a material including an ethylene-propylene random copolymer and a nucleating agent containing a specified organic phosphoric acid ester compound. The material advantageously contains a nucleating agent of from 0.01 to 1.0 part by mass with respect to 100 parts by mass of ethylene-propylene copolymer, and hydrotalcite as a neutralizing agent.

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.