Abstract: Recording means having integrally a recording head unit having discharge ports for discharging the ink and ink channels communicating to said discharge ports and leading the ink thereto, and an ink tank unit for storing the ink to be supplied to said recording head unit, wherein said recording head unit comprises a device for storing the parameter information concerning the ink discharge characteristics, and a protective member disposed on a side face area adjacent to said discharge port formation face for preventing the ink from flowing around.

Abstract: An ink tank includes a housing and an ink absorbing member accommodated in the housing. The ink absorbing member is constructed using a water jet cutter. The ink absorbing member is a thermosetting foamed block having a porous three-dimensional divergent circuit network; the foamed block is molded of a condensate comprising a compound having an amino group and a formaldehyde. The foamed block is formed for placement in the housing by actuating the water jet cutter and worked by actuating the water jet cutter to provide slits or holes in the ink absorbing member different from pores of the foamed block.

Abstract: The present invention provides an ink jet recording head comprising a top plate in which two groups of ink passage grooves for forming ink passages, two ink chamber frames, ink introduction passages, two rows of ink discharge ports are formed, two substrates on which a plurality of resistive heat generating elements for discharging ink are formed in correspondence to the two rows of ink discharge ports, and two elastic members for contacting under pressure and securing the substrates and the top plate for each said substrate, and wherein the junction between the substrates and the top plate forms the ink passages and the ink chambers therebetween, and further wherein a groove for isolating the ink discharge port rows from each other is formed between the ink discharge port rows and a depth of the groove is greater than depths of the ink discharge ports and the ink passages.

Abstract: An ink jet recording apparatus includes a recording head having a discharge portion, the discharge portion having discharge ports arranged for discharging ink to a recording medium, an absorbing member provided in the vicinity of the discharge portion, and a wiping member engageable with the discharge portion and the absorbing member, wherein a range of the discharge port array<a width of the wiping member≦a width of the absorbing member.

Abstract: A method for producing an ink jet printing head comprising a substrate having plural discharge energy generating elements for generating energy to be utilized for discharging an ink and a ceiling plate of a resinous material to be joined to the substrate to constitute, between the ceiling plate and the substrate, ink paths including discharge openings for discharging the ink and plural grooves communicating with the discharge openings and formed in positions corresponding respectively to the discharge energy generating elements is provided which comprises the steps of preparing the substrate provided with the plural discharge energy generating elements, positioning and contacting the ceiling plate and the substrate in such a manner that the discharge energy generating elements are respectively positioned in the grooves, and thermally fusing the contacting portions of the ceiling plate with the substrate while pressing the substrate and the ceiling plate in the positioned state, thereby joining the substrate a

Abstract: A printing system having an ink tank for storing ink, the ink tank having a housing having an ink feeding port formed through a first surface for feeding ink therethrough, and a second surface opposite the first. An ink absorbing member is accommodated in the housing, is a porous member having a three-dimensional net-shaped structure molded of a composition comprising a condensate of (i) a compound having an amino group and (ii) formaldehyde, and has a first surface facing the ink feeding port. An alleviating member having more resilience than the ink absorbing member is disposed between the ink absorbing member and an ink outflow portion formed through the ink feeding port and alleviates pressure applied by the ink outflow portion against the ink absorbing member. Both the alleviating member and the ink absorbing member are deformed by compression against the ink outflow portion.

Abstract: An ink-jet ink cartridge having an ink containing portion for containing the ink to be supplied to an ink-jet head, and a lid for covering the ink containing portion, characterized in that a wall of the ink containing portion and one face of the lid are welded together owing to frictional heat by vibration.

Abstract: An ink jet head includes a first member with an energy generating element for generating energy to eject ink, a second member having an ejection outlet forming member provided with an ink ejection outlet through which the ink is ejected, the second member being affixed to the first member to form a liquid passage in fluid communication with the ejection outlet, and urging means for urging the first and second members together to substantially fix them against each other. The ejection outlet forming member has a jaw connected with a surface of the first member which has the energy generating element, the jaw being adjacent a first member side of the ejection outlet. The following relationships are satisfied, namely, b.gtoreq.5 microns, c.gtoreq.

Abstract: An ink jet head has a first member having a plurality of energy generating elements for generating energy necessary for ejecting ink, a second member having a plurality of grooves separated by land portions, the grooves constituting an array of ink channels leading to an array of ink ejecting openings and the land portions constituting ink channel walls separating the ink channels, and a pressing member for pressing the first member and the second member to each other, thereby joining these members so that the ink channels are formed by cooperation between the first member and grooves in said second member. The height of ink channel walls is varied such that it is smaller at both end regions of the array of ink channels than at the central regions of the array of ink channels.

Abstract: An ink jet recording apparatus includes a liquid passage for ejection of ink; a liquid chamber for supplying ink to the passage; a device for mounting the recording head on the ink jet recording apparatus at an angle not more than 45 degrees relative to the horizontal plane; wherein the chamber has an internal surface which is slanted in a direction from an ink inlet thereof toward the liquid passage at the angle of 5-40 degrees relative to an extension of the liquid passage.

Abstract: An ink tank package container includes a first receiver for receiving an ink tank having an atmosphere communication opening and an ink supply port, a second receiver for receiving the first receiver, the second receiver having an opening portion, and at least one seal member for sealing the atmosphere communication and the ink supply port, a part of the seal member being exposed through the opening portion of the second receiver. The atmosphere communication and ink supply port are unsealed by pulling out the exposed part of the seal member.

Abstract: A length of a melamine foamed block to be accommodated in an ink tank housing as measured in the longitudinal direction is dimensioned to be larger than a length of the ink tank housing as measured in the longitudinal direction. Thus, while the foamed block is accommodated in the ink tank housing, it is compressed in the direction orienting toward an ink feeding port from which ink is fed to a printing head, i.e., in the ink feeding direction. Consequently, the ink retaining force induced by the capillary force is not intensified in the compressing direction of the melamine foamed block, resulting in an ink feeding capability of the printing head being improved. On the contrary, the ink retaining force effective at a right angle relative to the compressing direction of the melamine foamed block is intensified.

Abstract: An ink jet recording head is provided with a plurality of ink pathways and a plurality of ejection outlets in communication with the ink pathways. The ink jet recording head includes (a) a support member provided with a plurality of energy generating elements capable of generating energy to be utilized for ejecting ink through the ejection outlets, the energy generating elements being disposed in accordance with the ejection outlets; (b) a grooved top plate provided with a plurality of grooves to establish the ink pathways in accordance with the energy generating elements of the support member; and (c) a protruded member which is protruded above the surface of the grooved top plate. An ink cartridge includes the ink jet recording head and an ink container. An ink jet recording apparatus includes a control mechanism and the ink cartridge.

Abstract: An ink jet head includes a base member, a first member having recesses and coupled with the base member to form ink passages using the recesses and a second member integral with the first member and extending at an angle from an end of the first member, the second member having ink ejection outlets communicating with the ink passages.

Abstract: An ink jet head includes a plurality of ejection orifices for ejecting ink; a common liquid chamber for storing temporarily the ink to be supplied to each of the ejection orifices; a plurality of ink passages, being separated by liquid passage walls, and each of which connects one of the ejection orifices to the common liquid chamber; and a plurality of energy generating elements provided one for one in each of the ink passages for generating energy to eject the ink from each of the ejection orifices; wherein the ejection orifices are grouped into a plurality of control blocks comprising a predetermined number of the ejection orifices in sequence so that the energy generating elements are driven by the block; and wherein walls are provided in the common liquid chamber, at the dividing lines between the control blocks, for impeding the ink movement in the liquid chamber, between the adjacent blocks.

Abstract: An ink ejection recovery device including a cleaning blade for removing the ink adhered to the ejection orifice surface of a recording head further includes an ink removing mechanism, against which the cleaning blade is rubbed for removing the ink adhered to the cleaning blade itself, after wiping clean the ejection orifice surface; wherein the ink removing mechanism includes an ink transferring portion provided with a groove or a through hole, against which the cleaning blade is rubbed, and an ink absorbing member disposed in contact with the ink transferring portion.

Abstract: This invention relates to a highly precise and efficient color filter producing apparatus, which is provided with at least a set of drawing heads for respectively generating ink jets of red, green and blue colors, movement device for moving, with a substrate on which a color filter is to be formed by drawing with said ink jets, in a plane having a predetermined distance from the drawing heads, displacement detection device for detecting relative displacement between the substrate and the drawing heads in directions of six degrees of freedom, device for detecting the reaching position on the substrate of the ink jet discharged from the drawing head, and alignment device for effecting alignment between the substrate and the drawing heads in directions of six degrees of freedom, based on the results of detection of the reaching position and of the relative displacement between the substrate and the drawing head in directions of six degrees of freedom.

Abstract: An ink container includes an ink absorbing material accommodating chamber for accommodating an ink absorbing material for retaining ink to be supplied to a recording head; an ink supply opening connectable with said recording head to supply the ink to the recording head from said accommodating chamber; an air vent portion for fluid communication between said accommodating chamber with ambience; wherein said air vent portion has an inside opening in fluid communication with an inside of said accommodating chamber, an outside opening open to the ambience, and a fluid communication path in fluid communication with said inside opening and outside opening; wherein said outside opening takes, when said container is mounted on an apparatus with which it is usable, a position lower than that taken by said inside opening.

Abstract: An ink jet recording head is produced by forming in a first substrate a plurality of orifices for ejecting an ink droplet and a reference object for registration; forming in a second substrate ejection energy generating elements for supplying energy for ejecting the ink placed in liquid passages communicating with the orifices; and joining the first substrate and the second substrate together on the basis of the reference object for registration.

Abstract: An orifice plate having an orifice(s) for liquid ejection is produced by supplying a photosensitive resin to a mold having projections and recesses, curing the photosensitive resin, and releasing the cured resin shaped member from the mold.An orifice plate shaped by means of a mold comprises an orifice(s) for ejecting a liquid and projections forming walls of liquid flow path(s) through which the liquid is supplied to and communicates with the orifice, the material constituting the orifice plate being a cured resin produced by curing a photosensitive resin.