Canon Kabushiki Kaisha

Masaaki Izumida

Masami Ikeda

Hiroyuki Maru

Yoshiyuki Imanaka

Tatsuo Furukawa

Teruo Arashima

Tsuyoshi Orikasa

Hiroshi Sugitani

Kazuaki Masuda

Yuji Kamiyama

Fumio Murooka

Hiroyuki Ishinaga

Nobuyuki Kuwabara

Shigeaki Tanaka

Toshio Kashino

Masami Kasamoto

Jun Kawai

Akio Saito

Yoshifumi Hattori

Asao Saito

Seiichiro Karita

Yoshinori Misumi

Makiko Kimura

Junji Shimoda

Akira Goto

Hideo Saikawa

Hiroshi Nakagomi

Shuichi Katao

Takashi Watanabe

Kimiyuki Hayasaki

Koichi Sato

Kunihiko Maeoka

Tsuguhiro Fukuda

Hiromitsu Hirabayashi

Hiroshi Tajika

Noribumi Koitabashi

Jiro Moriyama

Yuji Akiyama

Yutaka Koizumi

Shuji Koyama

Masashi Miyagawa

Yoichi Taneya

Takeshi Okazaki

Takayuki Ono

Haruhiko Terai

Naohito Asai

Hideaki Kishida

Kouichi Omata

Masaki Inaba

Masaru Iketani

Tsutomu Abe

Sadayuki Sugama

Teruo Ozaki

Masahiko Higuma

Hiroyuki Tokuda

Yohei Sato

Torachika Osada

Toshihiro Mori

Kenji Makino

Shigeyuki Matsumoto

Tetsuya Sekine

Seiichi Tamura

Hajime Kaneko

Masahiko Tonogaki

Takashi Ohba

Yasuhiro Naruse

Yasutoshi Saito

The present invention is directed to resolve the noise problem with the ink in an ink jet head without changing the substrate manufacturing process for the ink jet head, that is, increasing the cost on the manufacture, and without needs of disposing a noise countermeasure component on the side of the printer main device, or making the design change for the countermeasure. The present invention is characterized in that to prevent malfunction from arising by the noise, a hysteresis circuit to provide different input data threshold values upon rising and falling is provided on an input portion of the signal for a drive control logic system such as a drive input signal for a shift register and a latch circuit on the same substrate as that of the heating elements, the driver and the drive control logic circuit, utilizing a diffusion layer constituting a driver.

Print head substrate, print head using the same, and printing apparatus

A method of manufacturing an ink jet head having a substrate that has a plurality of energy generating elements used for generating energy that in turn is used to discharge ink. The substrate has recessed portions separating the energy generating elements, and a wall member is provided having depending flow passage walls which are joined respectively to the recessed portions. The energy generating elements act on the ink and discharge it through the flow passages.

Method of manufacturing an ink jet head

Partial right-side panel and rear panel for an ink-jet cartridge

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

In a print head of this invention, electricity-to-heat converters and a driver circuit for driving these electricity-to-heat converters in accordance with print data are formed on a single board. The board further includes an input/output interface circuit for receiving print data from an external apparatus, a CPU for controlling a printer apparatus, a ROM, a RAM, an A/D converter, a D/A converter, a timer, and the like, and also includes an external element driver for driving a mechanism portion of the printer apparatus.

Print head and printer apparatus using the same

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

A recording head records data by correcting a variation among recording elements without significantly increasing a size of a substrate of the recording head. The recording head includes a plurality of heat generating elements and a circuit for energizing the heat generating elements in accordance with record data to record data. Selection information for selecting one of a plurality of pre-heat pulse signals is non-volatilly stored in a ROM and one of the pre-heat signal pulses applied to an input terminal is selected in accordance with the selection information stored in the ROM to pre-heat the heat generating elements.

Recording head and recording apparatus using the same

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 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 heat generating resistor comprised of a film composed of a TaN -containing tantalum nitride material which is hardly deteriorated and is hardly varied in terms of the resistance value even upon continuous application of a relatively large quantity of an electric power thereto over a long period of time. A substrate for a liquid jet head comprising a support member and an electrothermal converting body disposed above said support member, said electrothermal converting body including a heat generating resistor layer capable of generating a thermal energy and electrodes being electrically connected to said heat generating resistor layer, said electrodes being capable of supplying an electric signal for demanding to generate said thermal energy to said heat generating resistor layer, characterized in that said heat generating resistor layer comprises a film composed of a TaN -containing tantalum nitride material. A liquid jet head provided with said substrate for a liquid jet head. A liquid jet apparatus provided with said liquid jet head.

HEAT GENERATING RESISTOR CONTAINING TAN0.8, SUBSTRATE PROVIDED WITH SAID HEAT GENERATING RESISTOR FOR LIQUID JET HEAD, LIQUID JET HEAD PROVIDED WITH SAID SUBSTRATE, AND LIQUID JET APPARATUS PROVIDED WITH SAID LIQUID JET HEAD

An ink jet recording method includes supplying a driving signal of a phase, wherein the driving signal comprising at least first and second signal periods with a rest period therebetween; and supplying a driving signal of a phase which is different to provide the first or second signal overlaps with the rest period of the driving signal having the first mentioned phase.

Ink jet recording method and apparatus using time-shared interlaced recording

An ink container includes a casing, an air vent which is located in the casing, an ink supply opening for supplying ink out of the casing, and an ink absorbing material that is contained in the casing. The ink absorbing material retains ink therein, and has a generally rectangular parallelopipedal shape defined by sides of the ink absorbing material, and also has an ink supply portion for supplying ink to the ink supply opening. The ink absorbing material includes corner portions which are located between adjacent sides of the ink absorbing material. A preventing means prevents complete surface contact between the casing and said ink absorbing material by providing spaces between the casing and ink absorbing material which are in fluid communication with each other with a given space that is adjacent to a particular one of the corner portions that is most remote from the ink supply portion. The air vent is in fluid communication with the spaces.

Vented ink container with internal ink absorber, and ink cartridge having such 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

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Kawasaki, Japan

Masaaki Izumida