Abstract: An ink tank includes two stirring members having different masses in an ink containing chamber. The two stirring members are moved by an inertial force according to movement of a carriage and stir ink. The two stirring members have different movement start times and movement speeds.

Abstract: The present invention provides an ink jet printing apparatus that can print appropriate images by efficiently stirring ink in an ink tank in accordance with its status to homogenize it. When the elapsed time from the end of reciprocation of the carriage is shorter than a specified time, a printing operation is performed after the end of the reciprocation. The number of times that the carriage is reciprocated so as to stir the ink after the printing operation is set in accordance with the number of scans of the carriage during the printing operation.

Abstract: When a package in which a tank 1 is wrapped is opened, caused is an action of reversing vertical positions of an end face of the tank 1 having an ink supply portion 10, and an end face opposite to the foregoing end face. Along with this action, air existing inside the tank 1 ascends, and then is separated by air separating portions. Thus, a coloring material component inside the tank is stirred.

Abstract: A liquid container detachably mountable to a mounting portion of an ink jet recording apparatus, the liquid container includes a casing defining a liquid containing chamber; a supply port, provided in the casing, for supplying liquid contained therein to an ink jet head; a first engaging portion engageable with a first locking portion provided in the mounting portion, the first engaging portion being disposed on one side of the casing; a second engaging portion engageable with a second locking portion provided in the mounting portion, the second engaging portion being disposed opposed to another side of the casing, the another side being opposite the one side; a supporting portion for displaceably supporting the second engaging portion; an information storing portion for storing information relating to the liquid container; a contact electrically connectable with a contact provided in the mounting portion; a light emitting portion; a display portion for directing the light emitted from the emitting portion to

Abstract: An ink jet cartridge including a case, in which the bottom portion where an ink jet recording head is disposed projects, and a lid for covering the top surface thereof. In an ink containing chamber defined by the these case and the lid, there is provided an absorber. The lid is configured so that ribs provided directly over the projecting bottom are higher than the other ribs, and so that the lid can be used for different types of cartridge. In a black cartridge, the pertinent ribs perform the function of effectively bringing the absorber into pressure contact with an ink introducing section. In a color cartridge, the pertinent ribs perform the function of restraining the height of the top surface of the absorber disposed on the projecting bottom portion to a position lower than that of the top surface of each of the other absorbers.

Abstract: An ink print head reducing ink supply errors caused by air bubbles in order to stably supply ink at larger amounts. The ink print head includes an ink container for holding ink, a recording element for discharging the ink supplied from the ink container, a duct disposed between the ink container and the recording element to transfer the ink to the recording element, and an inductive channel which communicates with the duct. The inductive channel transfers the ink to the recording element from the ink container, and has a capillary force greater than that of the duct.

Abstract: An ink jet cartridge including a case, in which the bottom portion where an ink jet recording head is disposed projects, and a lid for covering the top surface thereof. In an ink containing chamber defined by the these case and the lid, there is provided an absorber. The lid is configured so that ribs provided directly over the projecting bottom are higher than the other ribs, and so that the lid can be used for different types of cartridge. In a black cartridge, the pertinent ribs perform the function of effectively bringing the absorber into pressure contact with an ink introducing section. In a color cartridge, the pertinent ribs perform the function of restraining the height of the top surface of the absorber disposed on the projecting bottom portion to a position lower than that of the top surface of each of the other absorbers.

Abstract: A liquid container detachably mountable to a mounting portion of an ink jet recording apparatus in a slot-like mounting configuration where the liquid container is supported between a pair of engaging portions that respectively engage with a corresponding pair of locking portions on the mounting portion of the recording apparatus. The liquid container is supported in an upright configuration and includes a display portion on an upper side thereof, and a light emitting portion which emits light for display by the display portion. Because the display portion is disposed on an upper side, a user can confirm the display despite the mounting arrangement of the liquid container in the recording apparatus.

Abstract: An ink tank includes a tank case and a stirrer. The proximal end of the stirrer is supported by the inner surface of the tank case in a pivotal manner. When the stirrer moves close to the inner surface of the ink tank, the stirrer is substantially parallel to the inner surface. The stirrer includes a through-hole in the vicinity of the proximal end thereof.

Abstract: A liquid container includes a housing, a flexible film, a liquid reservoir configured to directly store liquid therein and defined by the housing on one side and the flexible film on the other side, a liquid supply port provided in the liquid reservoir and configured to supply liquid to a recording head, and an overhang protruding from the housing and located in the liquid reservoir and substantially near the liquid supply port. The absorbing member is configured to absorb the inertial force of liquid, the inertial force being generated in liquid in the liquid reservoir by an external force applied to the housing.

Abstract: An ink tank includes a stirrer supported in a freely moveable manner near an inner wall of an ink storage chamber. When the stirrer moves closest to the inner wall, a predetermined gap is formed between opposing surfaces of the inner wall and the stirrer.

Abstract: A liquid container having a liquid containing portion adapted to contain a liquid, a supplying portion facilitating supplying the liquid from the liquid containing portion to outside, and an agitating member configured to agitate the liquid, in which the agitating member has a bending portion.

Abstract: A liquid container includes an air-tight liquid-storage chamber or reservoir, a movable member for agitating liquid, and a protrusion portion for supporting the movable member. The movable member and the protrusion portion are disposed in the liquid-storage chamber. The movable member includes a first end that is linearly movable along the protrusion portion and a second end that is free.

Abstract: A liquid container detachably mountable to a container holder, the container holder includes a container body for containing liquid and including a front side engaging portion and a rear side engaging portion for engagement with the container holder, the front side engaging portion and rear side engaging portion being disposed at a leading side and a trailing side, respectively with respect to an inserting direction of the container into the container holder; and a projection, provided on only one of lateral sides of the container body which extend parallel with the inserting direction, for being guided, when the container is mounted to the container holder, along an upper end of a guide wall provided in the container holder while the other lateral side is being limited by an inner surface of the container holder, and the container is being rotated substantially about the front side engaging portion.

Abstract: An ink container includes a casing having a substantially rectangular shape; a plurality of ink accommodating portions defined by partition in the casing; ink supply ports provided, in a bottom side of the casing, for the ink accommodating portions, respectively; wherein the ink container is detachably mountable to a holder provided with a recording head portion for ejecting ink accommodated in the ink accommodating portion, wherein the plurality of ink supply ports are disposed deviated toward one of long edge of the bottom side; and a plurality of dimple portions in which the supply ports are formed, respectively, and the dimples is cut away and opens adjacent to the one of edges.

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 container for supplying through an ink supply port ink accommodated in a main body of the container, the ink container including a substrate mounted on a surface of the main body of the container, and a contact portion and a storing element electrically connected with contact the portion, the contact portion and the storing element being provided on the substrate, Characterized In That the contact portion is disposed at a position more remote from the ink supply port than the storing element.

Abstract: An ink container detachably mountable to an ink jet recording apparatus which includes a cartridge provided with a recording head and capable of detachably carrying the ink container, and includes a mechanical switch for detecting mounting of the cartridge by its displacement, the container including a bottom side which is provided with an ink supply port for supplying the ink from an inside of the container to the recording head and which takes a bottom position in use; a substantially vertical side having an engaging portion for mounting the ink container to the cartridge; a stepped portion, in the bottom side, forming a recess having an end which is open at the vertical side; and a projected abutment portion, provided adjacent the vertical side in the recess, for displacing the mechanical switch.

Abstract: An ink tank is provided which can apply an optimum negative pressure stably by a valve of a simple structure. To this end, the ink tank of this invention has a valve and a damper section installed in an ink flow path. The valve deforms when the negative pressure in the ink supply port is greater than a predetermined level, to temporarily open the ink flow path to introduce ink from the ink accommodation portion to the ink supply port. The damper section is installed between and communicates to the ink supply port and the valve in the ink flow path. The damper section is formed of a resilient member more easily deformed than the valve and applies a negative pressure to the interior of the ink supply port by an elastic recovery force of the resilient member.