摘要:
A micromachine comprises at least one heat generating unit (1a,1b,1c) arranged on the surface of a substrate (1), means for retaining liquid having a liquid retaining portion along the heat generating unit, a rotator (3) rotatively supported in the liquid retaining portion of means for retaining liquid. This rotator is structured to rotate by means of the boiling of liquid in the liquid retaining portion by heat generated by the heat generating unit (1a,1b,1c). The micromachine, such a micropump or a micromotor, is incorporated in a liquid jet recording head to cause recording liquid to flow compulsorily in order to remove accumulated bubbles in the liquid paths for the maintenance of good performance of the liquid jet recording head at all times.
摘要:
An ink absorber (24,25,26,28,34,45,46) is housed inside a housing of an ink tank (20,30,40) and is capable of retaining ink. The ink absorber (24,25,26,28,34,45,46) has an outer surface equal to or corresponding to a shape of an internal surface of the housing and is made of a fiber material obtained by compressing a fiber body and thermally molding at least a surface thereof. An ink tank (20,30,40) is comprised of the ink absorber (24,25,26,28,34,45,46) and the housing. An ink jet cartridge is comprised of the ink tank (20,30,40) and a print head (21,31). A process for producing the ink tank comprises a first molding step of molding a continuous fiber aggregate of a rod shape or a plate shape with elasticity, a step of cutting the fiber aggregate thus molded to form a fiber body, a second molding step of subjecting the fiber body to compression and thermal molding so as to provide the fiber body with an outer surface corresponding to a shape of the inside of the housing, thus forming an ink absorber and a step of inserting the ink absorber into the inside of the housing.
摘要:
A liquid discharge head comprises a grooved member (50) including plural discharge ports for discharging liquid, plural grooves for respectively constituting first liquid paths (14) directly communicating with the discharge ports, and a recess for constituting a first common liquid chamber communicating with the plural grooves and serving to supply the first liquid paths with liquid, plural element substrates, each including plural heat generating members for generating bubble in the liquid by giving heat thereto and walls of second liquid paths (16) corresponding to each the heat generating members, and arranged along the direction of array of the discharge ports of the grooved member, and a partition wall positioned between the element substrates and the grooved member, and including, in positions respectively opposed to the heat generating members, plural movable members (31) adapted to respectively displace toward the first liquid paths by the pressure of generation of the bubble.
摘要:
This invention is directed to prevent an ink jet inactivation state which is induced when ink droplets adhering to the jet port surface of an ink jet head reach the jet port, and is characterized by including a water repellent region in the proximity of the jet port disposed on the jet port surface and a groove-like hydrophilic region inside a region spaced apart by a predetermined distance from the jet port and adjacent to the water repelling region. Since the groove-like hydrophilic region is disposed, the ink droplets adhering to the jet port surface can be taken into the hydrophilic region. Accordingly, excellent recording can be accomplished even under the condition of high speed recording and high frequency driving.