Abstract: A head holder including an ink jet head for discharging ink and a flexible cable on which a contact portion to which an electric signal for discharging ink from the ink jet head is transferred is formed and which is joined to the ink jet head, wherein an opening through which the flexible cable passes is formed in the head holder and a portion of the flexible cable on which the contact portion is formed is exposed to the outside of the head holder from the opening of the head holder.

Abstract: A liquid discharging head, comprises a discharge port for discharging liquid, a liquid passage provided with bubble-generating means for generating bubbles in the liquid supplied via a liquid supply port, and in communication with the discharge port at its one end, and a movable member arranged apart from the discharge port by a gap in the liquid passage corresponding to the bubble-generating means, wherein the projected area of said movable member on said liquid supply port is larger than the opening area of said liquid supply port, said bubble-generating means is arranged on a wall, via the movable member, facing a wall to which the liquid supply port in the liquid passage is open, said movable member is on the one end of said liquid passage as the fulcrum and its free end is arranged on the closed side of said liquid passage, said bubble- generating means is arranged to face the free end of the movable member in the same direction; and said liquid supply port is open to the liquid passage on the side of th

Abstract: An ink jet recording head is provided with a plurality of discharge ports for discharging recording liquid, a discharge port plate having the discharge ports therefor, a liquid chamber for retaining the recording liquid, a plurality of discharge energy generating elements for discharging the recording liquid, a substrate having the plurality of discharge energy generating elements on one surface thereof, and a plurality of liquid flow paths extended in one direction for communicating the liquid chamber and the discharge ports, the liquid flow paths including the discharge energy generating elements therein and having the rectangular sectional configuration.

Abstract: The present invention concerns an ink jet unit detachably mounted to the carriage of an ink jet recording apparatus. The ink jet unit includes an ink container for storing ink and a casing for retaining the ink container, wherein the casing and ink container are independent from each other so that the ink container can be exchangeably installed in the casing. The casing includes an ink jet recording portion, an opening for mounting the ink container thereto, a guide portion for installing the ink container into an accommodating portion through a rotary motion, a shoe portion generating a resistive feel when the ink container is inserted into the accommodating portion, and a dislocation preventive member. The shoe portion has a pressing device for maintaining fluid communication between the ink container and an ink supply tube contained in the casing.

Abstract: An object of the invention is to provide a cap in use for liquid reserving cartridge and a liquid reserving cartridge having the same which can proceed stably to weld the cap onto the liquid cartridge, reduce an unsealing force without a welding strength and improve a handling easiness during unsealing, wherein: the cap 1 in use for liquid cartridge, which is provided with a liquid reserving portion 11 and a feeding portion 13 for feeding the liquid externally, comprises a facing 2 for covering the feeding port 13, welding portions to be welded with the liquid reserving cartridge 11 and a handling portion for unsealing the welded portions by means of rotating the cap 1, during that the welding portions opposing to each other with respect to a fulcrum of the rotating operation and being located on a center line which runs through both the rotating center and a substantial center line of the handling lever.

Abstract: A method for discharging ink from a discharge port using a liquid jet recording head having the discharge port for discharging liquid, a liquid flow path communicating with the discharge port, a liquid discharge heat generating element provided in the liquid flow path to apply thermal energy for discharging the liquid to the liquid with bubble generation and a fluid resistance element provided upstream of the liquid discharge heat generating element in the liquid flow path. A bubble generating region is used as the fluid resistance element and a movable member is provided facing the bubble generating region and having a free end, the movable member being shiftable upon bubble generation at the region. The method includes the step of generating a bubble by driving the liquid discharge heat generating element and generating the bubble and shifting the movable member by the fluid resistance element. Also discloses are a liquid discharge head, head cartridge, and recording apparatus which perform the method.

Abstract: A method for manufacturing an ink jet recording head involves forming discharge ports by irradiating a laser beam onto a member which becomes the discharge port plate through a mask having specific patterns thereon. The mask includes a transmission section which regulates the shape of the discharge ports, and an attenuation section formed on the outer circumference of the transmission section so that the further the attenuation section is from the transmission, the less the laser beam becomes. This method also involves forming the discharge ports by irradiating the laser beam through the mask to the member, and each port has a cross-sectional shape which gradually tapers from a rectangular shape at a side of the port connected with the liquid flow path to a circular shape at a recording liquid discharge side of the port.

Abstract: A liquid storing container employable for an ink jet recording apparatus includes a housing, a storing area containing a porous ink absorbing member, a valve mechanism, a filter in contact with the porous member, and a stopper. The liquid storing container is detachably connected to an ink jet recording head, where the valve mechanism allows an outflow of ink to the ink jet head through the joint portion when connected to an ink feed pipe, and closes the joint portion when disconnected from the ink feed pipe.

Abstract: A liquid jet recording method includes applying thermal energy to liquid in a liquid passage to produce film boiling of the liquid to produce a bubble; permitting the bubble to communicate with ambience; wherein the liquid passage is not blocked in the communicating step.

Abstract: An ink jet head for performing recording by discharging inks comprises an element substrate provided with a plurality of discharge energy generating elements for discharging the inks and a grooved member integrally having discharge ports, a plurality of grooves constituting ink flow passages provided corresponding to the discharge energy generating elements, a plurality of recess portions constituting a plurality of liquid chambers for supplying the inks to a plurality of ink flow passages, and separation grooves provided between the plurality of recess portions to separate between the recess portions constituting the liquid chambers. The element substrate and the groove member being jointed together. The liquid chambers are separated by the separation grooves for preventing the inks from flowing between the liquid chambers.

Abstract: A mounting method of an ink container to an ink jet unit mountable to an ink jet recording apparatus, wherein the ink container is mounted while a corner portion of the ink container between a top surface and a rear side is slid in contact with an urging member and while a corner portion of the ink container between a front side and a bottom side is slid toward a front side of the ink jet unit in contact with an inner bottom surface of the ink jet unit.

Abstract: An ink refilling method for an ink container having a porous material capable of producing negative pressure therein and having an ink absorbing portion in a connecting zone with an ink jet recording head, after at least a part of initially contained ink is consumed through the ink absorbing portion includes breaking ink meniscus at the ink absorbing portion of the ink container; supplying the ink into the ink container by a negative pressure produced in the porous material by consumption of the ink, while maintaining fluid communication between the ink absorbing portion and the ink to be supplied.

Abstract: In a jet recording method, a recording material is placed in a path defined by a nozzle leading to an ejection outlet, and then heated by actuating a heater disposed within the nozzle to generate a bubble within the recording material, thus ejecting a droplet of the recording material out of the ejection outlet under the action of the bubble to be attached onto recording paper. As improvement, the recording material is pre-heated by actuating the heater before the heating for generating the bubble, and the generated bubble is caused to communicate with ambience. As a result, the ejection of the recording material droplet is stabilized without causing splash or mist.

Abstract: An ink jet unit to which an ink container is detachably mountable, and which is further mountable to an ink jet recording apparatus so as to effect ink jet recording. The ink jet unit includes an ink jet head for ejecting ink for recording, an ink supply tube for receiving ink from the ink container and being provided at a bottom portion of the ink jet unit in fluid communication with the ink jet head, and an opening for permitting mounting of the ink container thereto. The opening is formed continuously, in such sides of the ink jet unit as take top and front positions when the ink jet unit is mounted to the ink jet recording apparatus. A cover is provided, at the top side of the ink jet unit.