Abstract:
A liquid discharging head for discharging liquid from discharge ports, comprises first and second element boards provided in mutually opposed manner and bearing thereon a plurality of energy generating elements for generating energy for liquid discharge and a grooved member positioned between said mutually opposed first and second element boards and provided with grooves for forming liquid flow paths respectively corresponding to said energy generating elements in combination with said first element board, grooves for forming liquid flow paths respectively corresponding to said energy generating elements in combination with said second element board, and discharge ports communicating with said liquid flow paths.
Abstract:
Employing a multi-value heater which can obtain high level gradation, a circuit construction can be simplified, and compact head can be realized. Therefore, corresponding to a plurality of ejection openings, a plurality of heating elements (201(1)... 201(n)) are provided corresponding thereto. The heating elements (201(1)... 201(n)) are supplied selection signal so as to be driven selectively.
Abstract:
An ink-jet printing head and an ink-jet printing apparatus can reduce fluctuation of density of an ink ejected from each nozzle by ejecting ink of different densities from the same nozzle (11) without varying size of an ink droplet, or by controlling ejection of a mixture ink, in which a plurality of inks are mixed, for forming an image. The ink-jet printing head (100) includes a plurality of ejection openings (11) for ejecting ink, a plurality of ink passages (5) communicated with the plurality of ejection openings, ink ejecting energy generating elements (2) provided in the plurality of ink passages (5), a mixing liquid chamber (8) connected to the plurality of ink passages (5) in common, a plurality of individual liquid chambers (9, 10) supplying ink to the mixing liquid chamber (8), and a valve mechanism (14, 15) provided between the individual liquid chamber (9, 10) and the mixing liquid chamber (8) and controlling supply amount of the inks supplied from the individual liquid chambers.
Abstract:
An ink-jet recording head comprises a plurality of liquid flow paths having discharge openings for discharging an ink, and a plurality of thermoelectric transducers provided for each liquid flow path in order to discharge the ink, wherein, a frontward thermoelectric transducer located on the discharge opening side is so provided that, when the ink is discharged by the frontward thermoelectric transducer alone, a value of (discharge velocity v/discharge quantity Vd) with respect to a distance OH extending from an end of its discharge opening side to the discharge opening is at a distance OH of the first region in a regional classification into a first region in which the value of v/Vd increases with a decrease in the distance OH and a second region in which it comes to be substantially constant with an increase in the distance OH.
Abstract:
Employing a multi-value heater which can obtain high level gradation, a circuit construction can be simplified, and compact head can be realized. Therefore, corresponding to a plurality of ejection openings, a plurality of heating elements (201(1)... 201(n)) are provided corresponding thereto. The heating elements (201(1)... 201(n)) are supplied selection signal so as to be driven selectively.
Abstract:
The present invention provides an ink-jet head having a plurality of heaters (102,103) for one ejection outlet (101), wherein the heaters and the outlet are disposed so as to satisfy a specific relationship, and thereby errors in the path of ejected ink droplets concerning the driving positions of the heaters can be restricted.
Abstract:
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.
Abstract:
Employing a multi-value heater which can obtain high level gradation, a circuit construction can be simplified, and compact head can be realized. Therefore, corresponding to a plurality of ejection openings, a plurality of heating elements (201(1)... 201(n)) are provided corresponding thereto. The heating elements (201(1)... 201(n)) are supplied selection signal so as to be driven selectively.
Abstract:
A liquid discharging head for discharging liquid from discharge ports, comprises first and second element boards provided in mutually opposed manner and bearing thereon a plurality of energy generating elements for generating energy for liquid discharge and a grooved member positioned between said mutually opposed first and second element boards and provided with grooves for forming liquid flow paths respectively corresponding to said energy generating elements in combination with said first element board, grooves for forming liquid flow paths respectively corresponding to said energy generating elements in combination with said second element board, and discharge ports communicating with said liquid flow paths.