Canon Kabushiki Kaisha

Yoichi Taneya

Hiroyuki Ishinaga

Hiroyuki Sugiyama

Masahiko Higuma

Toshio Kashino

Yoshiyuki Imanaka

Kazuaki Masuda

Satoshi Shimazu

Yoshinori Misumi

Ichiro Saito

Kiyomitsu Kudo

Aya Yoshihira

Masami Ikeda

Sadayuki Sugama

Yohei Sato

Torachika Osada

Jun Kawai

Masahiko Kubota

Teruo Ozaki

Hiroshi Sugitani

Hiroyuki Tokuda

Nobuyuki Matsumoto

Takashi Saito

Muga Mochizuki

Tetsuya Sekine

Tokuya Ohta

Masaru Iketani

Tsutomu Abe

Masahiko Ogawa

Tomoyuki Hiroki

Yoshie Asakawa

Yuji Kamiyama

Hajime Kaneko

Akihiro Yamanaka

Akihiko Shimomura

Genji Inada

Masaaki Izumida

Masami Kasamoto

Masaaki Okada

Masao Mori

Hiroshi Tajika

Noribumi Koitabashi

Akira Nagashima

Masanori Takenouchi

Osamu Sato

Shuji Koyama

Makoto Shioya

Mariko Suzuki

Hiroki Tajima

Masashi Miyagawa

Takeshi Okazaki

Shoji Shiba

Junichiro Iri

Hiroaki Mihara

Shigeo Toganoh

Masashi Kitani

Kenji Aono

Kunihiko Maeoka

Hajime Kishida

Shinji Watanabe

Shinichi Miyauchi

Taiji Yoshinari

Tomoyuki Kaneda

A recording head comprises a plurality of recording elements for performing recording; a driving circuit for driving the plurality of recording elements; and a predetermined voltage generating circuit for generating a predetermined voltage to be applied to the plurality of recording elements from voltage supplied from outside. With the head thus structured, a desired voltage is generated in the interior of the head by use of the predetermined voltage generating circuit for performing recording, thus making it possible to prevent the voltage drop which may take place if the voltage is supplied from outside through a cable, as well as to prevent the durability of the heat generating elements from being damaged due to noises. It also becomes possible to set the voltage to be applied to the recording elements at an optimal value corresponding to the discharge voltage, hence stabilizing ink discharges efficiently.

Recording head, substrate for use of recording head, and recording apparatus

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

A method of manufacturing a liquid discharge head having a liquid flow path, a discharge energy generating device in the liquid flow path, a discharge port communicating with the liquid flow path, and a movable member facing the discharge energy generating device. The movable member is formed by a photolithographic technique, and a right-angled part and an acute-angled part of an edge of the movable member are removed so as to make a surface of the edge of the movable member curved. The curved surface of the movable member serves to reduce concentration of the stress on the movable member that occurs due to displacement of the movable member resulting from pressure of a bubble generated to discharge ink. Removal of the right-angled and acute-angled parts may be performed by soaking the movable member in an etching solution after formation of the movable member.

Method of manufacturing a liquid discharge head

The present invention provides a printer head having a plurality of print elements for effecting recording on a recording medium on the basis of printer information inputted from outside, comprising an interface circuit for converting input of the printer information corresponding to communication interface standard for high speed data transferring into data processable in the print head and for outputting the converted data, and in which the recording on the recording medium is effected by the print elements in accordance with the printer information outputted from the interface circuit. A printer apparatus having such a printer head is also provided.

Printer head and printer apparatus

A liquid discharge head includes plural heat generating members, each linearly communicating with a discharge port, a liquid flow path communicating with each discharge port and having a bubble generating area in which a movable member is provided, a limiting portion opposed to the bubble generating area in the liquid flow path for limiting displacement of the movable member, and a circuit for receiving data of a predetermined number of bits for each heat generating member and generating drive pulses for each heat generating member based on the respective input data. Substantial contact between the displaced movable member and the limiting portion renders a portion of the liquid flow path including the bubble generating area a substantially closed space except for the discharge port. The number of drive pulses generated from the input data is larger than the predetermined number of bits for at least one set of the data.

Liquid discharge head, element substrate, liquid discharging apparatus and liquid discharging method

An object of the present invention is to provide a printing system in which a user can obtain permission to use an encrypted copyrighted image by paying a royalty to a creator of the image so as to print the image, a printing method, and an ink tank which can be used to attain the printing system. The printing system comprises a computer and a printer which is connected to the computer. The computer can acquire an encrypted image with a print key which is distributed from an Internet distribution company. The printer has an ink tank replaceably mounted thereon, and the ink tank incorporates a security chip. The security chip contains a certificate key, generates a decryption key from a combination of the certificate key and the print key, and decrypts the encrypted image into print data which can be printed by the printer by use of the decryption key.

Printing system, printing method, and ink tank

Provided is a recording head substrate on which are mounted energy generating elements that contribute to the formation of images by a recording head, and on which both light-receiving elements and light-emitting elements, or at least, light-receiving elements are mounted. In addition, provided is a recording head substrate on which are mounted energy generating elements that contribute to the formation of images by a recording head, and on which are mounted a plurality of head position detecting elements for detecting the position of the recording head.

Ink jet element substrate and ink jet head that employs the substrate, and ink jet apparatus on which the head is mounted

A liquid discharge head comprises a separation member for separating the discharge liquid flow paths communicated with discharge ports for discharging discharge liquid to enable discharge liquid to flow, and the bubbling liquid flow paths to enable bubbling liquid to flow, which is provided with the bubble generating areas for creating bubbles used for discharging discharge liquid from the discharge ports. This separation member is provided with the opening portions positioned to face the bubble generating areas, and displacement members provided for the separation member corresponding to the openings, having the free ends to be displaced by bubbles created on the bubble generating areas provided for the separation member. Then, with no bubbles created on the bubble generating areas, the displacement members interrupt the opening portions, and with bubbles created thereon, the free ends of the displacement members are displaced to discharge discharge liquid from the discharge ports of the head. Hence, this head can prevent discharge liquid from entering around the heat generating members at the time of bubble disappearance, and the mixture of discharge liquid and bubbling liquid when the head is left intact for a long time, while maintaining the excellent discharge efficiency by means of the displacement members thus arranged.

Liquid discharge head, head cartridge provided with such head, liquid discharge apparatus and method for discharging liquid

Information transmitted through radio is recorded in telephone communications using radio. Provision is made of a radio wave receiving portion for receiving a radio wave signal, a voice data holding portion for demodulating the radio wave signal received by the radio wave receiving portion into voice data, and holding it, a data converting portion for converting the voice data held by the voice data holding portion into a character code, an image data holding portion for converting the character code converted by the data converting portion into image data, and holding it, a recording element portion for recording the image data held in the image data holding portion on a recording medium, a synchronous signal outputting portion for outputting a synchronous signal synchronized with the timing at which the image data held in the image data holding portion is delivered to the recording element portion, and a motor for conveying the recording medium on the basis of the synchronous signal outputted from the synchronous signal outputting portion.

Radio wave receiving and recording apparatus

A liquid discharge head is provided having a heating member for generating thermal energy to create a bubble in liquid, a discharge port adapted to discharge the liquid, and a liquid flow path communicated with the discharge port having a bubble generating area for enabling the liquid to create the bubble. A movable member is arranged in the bubble generating area to be displaced along with the development of the bubble. A regulating portion regulates the displacement of the movable member within a desired range, and by means of energy at the time of bubble creation, the liquid being discharged from the discharge port. The regulating portion is arranged to face the bubble generating area in the liquid flow path. A support member is directly connected to the movable member. The bubble development causes the movable member and the regulating portion to be in contact forming an essentially closed space with the exception of the discharge port.

Liquid discharge apparatus having a heating element

A boundary nozzle which is contained in a block that has not been driven and is situated at the boundary with a driving block that is driven prior to the block containing the boundary nozzle contains a second stopper which has a length in a liquid flow direction longer than that of a first stopper contained in a driving nozzle in the driving block that is driven prior. A near-boundary nozzle adjacent to the boundary nozzle has a third stopper which has a length in a liquid flow direction longer than that of the first stopper but shorter than the second stopper. Thus, recording irregularities owing to meniscus regression are suppressed.

Liquid discharging head, method for manufacturing liquid discharging head, and liquid discharging apparatus

Liquid is discharged at a high frequency in a consecutive manner with a liquid discharge head having a movable member. A bubble formed for discharge a first discharged droplet grows large into a discharge port side by the movable substantially closing a common liquid chamber side in a bubble forming procedure, and disappears fast at the common liquid chamber side by the movable member releasing the common liquid chamber side of a flow path in a bubble disappearance procedure, and reaches a state to remain at the discharge port side of a heat-generating body. Under this state, since the bubble disappears at the common liquid chamber side, a constant liquid is refilled to reach the discharge port side, and the bubble does not yet completely disappear, a meniscus is disposed comparatively closer to a liquid discharge face. Under the circumstances, if discharge of a second discharged droplet is arranged to start from this state, the liquid can be discharged well at a short interval in a consecutive manner.

Method of discharging plural liquid droplets from single discharge port

Disclosed is a liquid discharge head that comprises: a heat generator that generates a thermal energy for generating a bubble in a liquid; a discharge part as a portion to discharge the liquid; a flow path communicating with the discharge part and having a bubble generation region in which the bubble is generated; a movable member having a free end and is displaced with the growth of the bubble; and a restricting portion to define a displacement amount of the movable member, in which the flow path is formed by joining a substantially flat substrate provided with the heat generator the movable member and a top plate opposing to the substrate and including the restricting portion, and the liquid is discharged from the discharge part by an energy during generation of the bubble, in which the clearance between at least one sidewall of the flow path and the side edge portion of the restricting portion is larger than the clearance between the sidewall and the side edge portion of the movable member.

Liquid discharge head and apparatus having restricted movement of a movable member

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Yokohama, Japan

Yoichi Taneya