Abstract: A liquid container for containing liquid includes a reflection member having a plurality of roof mirror assemblies arranged in a predetermined direction, each of the roof mirror assemblies having at least two reflecting surfaces positioned with a predetermined angle therebetween; wherein the reflection member is effective to divide incident light into a plurality of light beams by the plurality of roof mirror assemblies and to condensing at a predetermined position the beams sequentially reflected by the at least two reflecting surfaces of the roof mirror assemblies wherein the reflection member is effective to divide incident light into a plurality of light beams by the plurality of roof mirror assemblies and to condensing at a predetermined position the beams sequentially reflected by the at least two reflecting surfaces of the roof mirror assemblies.

Abstract: A liquid container includes a lever having one end supported to an outer wall of a housing containing a liquid therein and the other end as a free end, the lever being elastically deformable. The liquid container further includes a projection provided in an area of the housing which is opposite to and away from the supported one end of the lever, the projection covering at least a part of a space between the free end of the lever and the housing in the above area. By virtue of the projection, the lever can be protected against accidental external forces. In a cap-equipped liquid container, a straight line connecting a projected end of the projection of the liquid container and a distal end of a tab of a cap is set to cross a movable range of the lever provided on the liquid container in which the lever is allowed to angularly move with elastic deformation thereof.

Abstract: A gas-liquid separation membrane is provided with high reliability and performance while having gas-permeable pores formed independently of each other in even pore size and in uniform distribution. The gas-liquid separation membrane has a plurality of gas-permeable pores that permit permeation of gas and that prevent permeation of liquid by capillary force, and the plurality of gas-permeable pores are formed independently of each other and in even pore size by laser machining.

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: A liquid supplying system comprises a capillary force generating member accommodating container which stores therein a capillary force generating member for retaining liquid, and is provided with a liquid supply portion for supplying outward the liquid retained in the capillary force generating member, and an air vent through which the capillary force generating member is in fluid communication with ambience; and a liquid reservoir container which is provided with a liquid reservoir portion for storing therein the liquid to be supplied to the capillary force generating member accommodating container, and a communication path portion for supplying the liquid to the capillary force generating member accommodating container, and forms therein a virtually sealed space except for the presence of the communication path portion; wherein the capillary force generating member is provided with a layer in which the primary direction in which fiber strands therein are arranged is substantially horizontal, and this layer

Abstract: A gas-liquid separation membrane is provided with high reliability and performance while having gas-permeable pores formed independently of each other in even pore size and in uniform distribution. The gas-liquid separation membrane has a plurality of gas-permeable pores that permit permeation of gas and that prevent permeation of liquid by capillary force, and the plurality of gas-permeable pores are formed independently of each other and in even pore size by laser machining.

Abstract: A liquid supplying system comprises a capillary force generating member accommodating container which stores therein a capillary force generating member for retaining liquid, and is provided with a liquid supply portion for supplying outward the liquid retained in the capillary force generating member, and an air vent through which the capillary force generating member is in fluid communication with ambience; and a liquid reservoir container which is provided with a liquid reservoir portion for storing therein the liquid to be supplied to the capillary force generating member accommodating container, and a communication path portion for supplying the liquid to the capillary force generating member accommodating container, and forms therein a virtually sealed space except for the presence of the communication path portion; wherein the capillary force generating member is provided with a layer in which the primary direction in which fiber strands therein are arranged is substantially horizontal, and this layer

Abstract: An ink-jet cartridge constructed with an inkjet printing head and an ink tank is positioned and filed on an upper surface of a base in a condition where ink ejection opening forming surface of the head is oriented upwardly. The ink ejection opening forming surface is contacted with a lower end portion of an elastic member which is movable in a direction of arrow a or arrow b. By sucking through suction hole or the like of the elastic member, vacuum pressure is introduced into a space between the elastic member and the ink ejection opening forming surface to discharge bubbles residing in liquid passages or floating up to the ink ejection openings.

Abstract: An ink container comprising a negative pressure generating member accommodating portion for accommodating a negative pressure generating member for retaining therein pigment ink to be supplied to an ink jet head; an ink supply port for supplying the ink to the ink jet head; an air vent for fluid communication between the negative pressure generating member accommodating portion and an ambient air; and an ink non-transmitting portion for partly blocking flow of the ink in the negative pressure generating member toward the ink supply port, wherein fluid communication is enabled except for the non-transmitting portion, and a sectional area, across a general direction of the flow of the ink toward the ink supply port in the negative pressure generating member accommodating portion, of non-communicating portion is not less than 50%.

Abstract: There is disclosed an ink tank in which an ink holding member is inhibited from being excessively deformed, and which steadily supplies an ink. A foaming direction of urethane of a first ink holding member is disposed substantially vertically (arrow B) to an abutment direction of an ink jet head onto an ink receiving tube so that the member is easily deformed with respect to a press force of a pressing direction (arrow A) substantially parallel to the abutment direction onto the ink receiving tube 34B, and the foaming direction of urethane of a second ink holding member is disposed in a direction substantially parallel to (arrow C) the abutment direction onto the ink receiving tube so that the member is not easily deformed with respect to the press force of the pressing direction substantially parallel to the abutment direction onto the ink receiving tube.

Abstract: An ink-jet cartridge constructed with an ink-jet printing head and an ink tank is positioned and filed on an upper surface of a base in a condition where ink ejection opening forming surface of the head is oriented upwardly. The ink ejection opening forming surface is contacted with a lower end portion of an elastic member which is movable in a direction of arrow a or arrow b. By sucking through suction hole or the like of the elastic member, vacuum pressure is introduced into a space between the elastic member and the ink ejection opening forming surface to discharge bubbles residing in liquid passages or floating up to the ink ejection openings.

Abstract: A package includes a packaging member; and an ink container which contains ink comprising pigment coloring material and solvent dispersing the coloring material and which has an ink supply port for permitting supply of the ink to an outside, wherein the ink container is mountable to an ink jet recording apparatus with the ink supply port at a lower position, the ink container accommodating an ink absorbing material for absorbing the ink and being provided with an air vent which is open for fluid communication between a space inside the ink container and ambience, and wherein a region tending to have a high coloring material density in the ink container is at a position generally diagonally opposite the ink supply port, wherein the ink container is in a first orientation which is different from a second orientation taken in use in the ink jet recording apparatus.

Abstract: An ink tank comprises a housing and a cover member, providing a hollow containing portion when bonded together, and in this containing portion, ink absorbent formed by laminating fiber material is contained. On the cover member, a rib is provided to extrude into the containing portion. This rib comprises a first directional rib arranged diagonally to the fibrous lamination face of the ink absorbent, and a second directional rib that intersects with the first directional rib orthogonally. On the position surrounded by the first directional rib and the second directional rib, an atmosphere communication port is formed, and around the atmosphere communication, the communication port guide that extrudes into the containing portion is arranged. The height of the rib is larger than that of the communication port guide. The rib presses the ink absorbent without being buried in it.

Abstract: A liquid supplying system comprises a capillary force generating member accommodating container which stores therein a capillary force generating member for retaining liquid, and is provided with a liquid supply portion for supplying outward the liquid retained in the capillary force generating member, and an air vent through which the capillary force generating member is in fluid communication with ambience; and a liquid reservoir container which is provided with a liquid reservoir portion for storing therein the liquid to be supplied to the capillary force generating member accommodating container, and a communication path portion for supplying the liquid to the capillary force generating member accommodating container, and forms therein a virtually sealed space except for the presence of the communication path portion; wherein the capillary force generating member is provided with a layer in which the primary direction in which fiber strands therein are arranged is substantially horizontal, and this layer

Abstract: An ink jet head composed of a top plate having grooves for forming a plurality of ink passages in an arranged condition and a recess section for forming a liquid chamber communicating with the ink passages and a base plate for establishing the plurality of ink passages and the liquid chamber in a state joined to the top plate. On the base plate, ejection energy generating elements are placed for ejecting an ink. In addition, a supporting member is used for supporting a surface of the base plate opposite to a surface thereof on which the ejection energy generating elements lie. The supporting member is made of a ceramic burned material. This construction is capable of joining the base plate and the supporting member smoothly in parallel with each other so that the ejection energy generating elements are accurately aligned with the plurality of ink passages made on a top plate to achieve a high-quality recording without the occurrence of troubles such as poor ink impact on a record medium.

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: A method for inspecting the liquid discharge condition of a liquid jet recording head, which is structured by assembling a ceiling plate having discharge ports formed on it to discharge liquid, and energy generating means to generate energy for discharging liquid, comprises the steps of forcing liquid to flow out from the discharge ports of the ceiling plate after the discharge ports are processed and formed on the ceiling plate, but before the assembled structure is formed, of observing and measuring the flow out condition of the liquid, and of calculating the discharge angle of the liquid. With the method thus arranged, it is possible to promptly reflect the inspection result of the liquid discharge direction and angle on the processing step accordingly if any deviation thereof is found from the regular value, thus enhancing the production yields significantly.

Abstract: An ink tank having an absorbing member for holding therein ink to be supplied to a recording head for discharging ink to thereby effect recording, a tank container containing the absorbing member therein, a buffer portion capable of temporarily containing the ink therein, and an atmosphere communicating port disposed in the buffer portion and communicating the interior of the ink containing portion with the atmosphere, the buffer portion is disposed on a side portion of the absorbing member, and the direction from the absorbing member toward the buffer portion is a direction intersecting with the scanning direction of a carriage.

Abstract: The pressing portion of the press member for joining the top plate and the heater board together is formed into projections A, which are pressed against the back of the heater board at the vicinity of the joint gravity center of the top plate and the heater board to firmly join the top plate and the heater board with a uniform pressure over their entire contact surface.