Canon Kabushiki Kaisha

Yuji Kamiyama

Hiroyuki Ishinaga

Kazuaki Masuda

Masaaki Izumida

Yoshiyuki Imanaka

Masami Kasamoto

Hajime Kaneko

Teruo Arashima

Tatsuo Furukawa

Jun Kawai

Hiroyuki Maru

Fumio Murooka

Masami Ikeda

Shuichi Katao

Toshio Kashino

Seiichiro Karita

Hiroshi Sugitani

Masahiko Higuma

Yoshinori Misumi

Yoichi Taneya

Tsuyoshi Orikasa

Junji Shimoda

Seiji Suzuki

Yutaka Koizumi

Shuji Koyama

Akira Goto

Kimiyuki Hayasaki

Takayuki Ono

Haruhiko Terai

Hideaki Kishida

Kouichi Omata

Masaki Inaba

Masaaki Okada

Hiroaki Tanaka

Teruo Ozaki

Eiichiro Shimizu

Hiroyuki Tokuda

Takeshi Okazaki

Minoru Nozawa

Toshihiro Mori

Makiko Kimura

Hideki Kawai

Tetsuya Sekine

Masahiko Tonogaki

Yasuroh Kashima

A printing head has a plurality of heater boards, each of which includes a shift register to which printing data and selection data for selecting preheating pulse signals are applied as inputs, a latch circuit for latching the printing data, a selection-data latch circuit for latching the selection data, a selection circuit for selecting any one of a plurality of preheating pulse signals inputted in accordance with the latched selection data, and a plurality of heating resistors driven by the printing data or preheating pulse signals. Correction data, obtained by a head correcting apparatus, for performing printing at an average density by correcting the characteristics of each heater board is stored in a memory of the printing head. A printing apparatus decides the selection data in accordance with the correction data and sets the selection data in the selection-data latch circuit.

Printing head, printing method and apparatus using same, and apparatus and method for correcting said printing head

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.

Ink tank cartridge, a manufacturing method thereof and a packaging structure of the ink tank cartridge

A sealing method for an ink container having a front side, a rear side, a bottom side, an upper side and two lateral sides, and having an ink supply port for supplying ink to a recording head portion and an air vent for fluid communication between an inside of the ink container and ambience. A seal member is mounted on a first one of the sides and on a second one of the sides continuous with the first side, the seal member having a width larger than a width of the first and second sides. A portion of the seal member is inwardly folded beyond the width of the first side. A portion of the seal member is outwardly folded beyond the width of the second side. The inwardly folded portion of the seal member is heat-sealed to a side of a packaging bladder for accommodating the ink container.

Sealing method for ink cartridge

Substrate for thermal recording head, ink jet recording head using the substrate, recording apparatus with the recording head, and method of driving recording head

An ink jet head includes a plurality of liquid flow paths for ejecting the ink; and a plurality of heat generating resistors for the respective liquid flow paths, the heat generating resistor being independently drivable; wherein adjacent ones of the heat generating resistors are spaced by not more than 8 microns.

Element substrate having connecting wiring between heat generating resistor elements and ink jet recording apparatus

An ink cartridge for ink jet use is provided with an aperture for filling in the cartridge with ink. The circumference of the aperture and a part of a plug pressed in the aperture are fused and welded to be formed integrally to airtightly close the aperture, and obtain an integrated structure without any interface. Hence, it is made possible to reliably prevent ink from leaking therefrom, even if some scratches and cracks are present on both of them. This contributes to eliminating inspection steps to find ink leakage in the course of manufacture, and also, contributes to improving the yield of production. As a result, a significant reduction of costs is possible, while enhancing the reliability of the ink cartridge.

Ink cartridge and a method for sealing an aperture provided for such cartridge

An ink jet head includes ink ejection outlet for ejecting ink, a plurality of heat generating resistors for generating thermal energy contributable to ejecting the ink, and ink flow path comprising the plurality of the heat generating resistors and being in fluid communication with the ejection outlet, the heat generating resistors generating the thermal energy upon receiving a driving signal, so that a bubble is generated in the ink within the ink flow path to eject the ink through the ink ejection outlet; wherein the plurality of the heat generating resistors are arranged in parallel, relative to the ink ejecting direction, in the ink flow path, and the distances from the heat generating centers of the heat generating resistors to the ejection outlet are different.

Ink jet head, apparatus and method having individually-drivable heat generating resistors variably spaced from an ejection outlet

A manufacturing method for an ink container mountable to an ink jet apparatus in which the ink container includes an ink supply port, an air vent which has an inside opening which opens to an inside of the ink container, a groove functioning as an outside opening and extended from the inside opening, and a wall except in a region functioning as an outside opening around the groove. According to the method, a seal member is positioned to a position corresponding to the ink supply port and the air vent, and the wall is thereafter collapsed through the seal member by a welding horn. By virtue of this method, a cover is thus provided in the wall above the groove to form a fluid communication path for fluid communication between the inside opening and the outside opening, with simultaneous welding of the seal member by heat.

Method of manufacturing an ink container

This invention has as its object to provide a substrate for an ink jet recording head, which is compact and can realize stable recording with high reliability, a recording head using the substrate, a recording apparatus mounting the recording head, and a method of driving the recording head. There are disclosed a substrate for a thermal recording head, having a plurality of heating resistor elements, a plurality of wiring electrodes for supplying driving signals to the heating resistor elements, a function element, electrically connected to the heating resistor elements, for selectively driving the plurality of heating resistor elements, and a measurement resistor element which is electrically independent form the heating resistor elements and the function element, and haws a resistance value larger than that of each heating resistor element, an ink jet head, a head cartridge, and a recording apparatus utilizing the substrate, and a method of driving a recording head using a measurement resistor.

Substrate for thermal recording head, ink jet recording head using the substrate, recording apparatus with the recording head, and method of driving record head

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. Close and tight contact between the first member and the second member is attained in the central region of the ink channel array where the ink channels actually perform ejection of ink, so that ink can be discharged accurately without any crosstalk between adjacent ink channels, thus ensuring high quality printing.

Ink jet head and method of producing the same

Printing head, printing method and apparatus using same, and apparatus

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Fujisawa, Japan

Yuji Kamiyama