Canon Kabushiki Kaisha

Fujitsu Corporation

E.i. Dupont De Nemours and Company

Takeshi Kono

Hiroki Tajima

Itaru Watanabe

Akihiro Yamanaka

Toshihiro Sasaki

Hajime Yamamoto

Yutaka Koizumi

Eiichiro Shimizu

Akira Goto

Hiroshi Koshikawa

Tatsuo Nanjo

Atsushi Saito

Nobuyuki Hatasa

Yasushi Iijima

Hiroyuki Maeda

Mitsuru Kurata

Shigeyuki Sugiyama

Masahiro Suzuki

Yukio Nohata

Tetsuto Kageyama

Takeaki Shima

Shinichiro Koori

Takeshi Yamaguchi

Masaya Uetsuki

Noriyuki Aoki

Ryohei Maruyama

Toshiaki Yamaguchi

Tomohito Abe

Naoaki Wada

Masakazu Nagashima

Daigo Kuronuma

Masakatsu Kuroki

Shinichi Miyauchi

Tatsuro Yoshimura

Yoshihiko Sugimura

A printing apparatus includes: a printhead; a carriage, on which the printhead is mounted; a first containing unit configured to contain ink to be supplied to the printhead; and a channel forming unit which forms an ink supply channel for supplying ink to the printhead. The channel forming unit includes: a first tube which extends in a reciprocation direction of the carriage; a second tube which is connected to the first containing unit; and a first coupling member which couples the first tube and the second tube to each other. The first coupling member is located in one end portion of the printing apparatus in the reciprocation direction, and has a bent channel which connects the first tube and the second tube to each other.

Printing apparatus

A circuit device includes a clock generator outputting a clock signal having a first frequency; plural phase controllers inputting the clock signal having the first frequency, and outputting clock signals having the first frequency and having phases advanced or delayed with respect to a phase of the clock signal; a selector inputting the plural clock signals having the first frequency output from the plural phase controllers, sequentially selecting pulses of the plural clock signals, and outputting a clock signal having a second frequency; a pattern generator generating a test pattern based on the clock signal having the second frequency; and a circuit inputting the clock signal having the second frequency and the test pattern generated by the pattern generator, operate based on the clock signal having the second frequency, and outputting operation results.

Circuit device, frequency changing circuit, method of testing circuit device, and method of controlling frequency changing circuit

A method for manufacturing an electrode comprising the steps of: applying onto a substrate a conductive paste to form a conductive paste layer comprising; (i) 100 parts by weight of a copper powder coated with a metal oxide selected from the group consisting of silicon oxide (SiO), zinc oxide (ZnO), aluminum oxide (AlO), titanium oxide (TiO), magnesium oxide (MgO) and a mixture thereof; (ii) 5 to 30 parts by weight of a boron powder; and (iii) 0.1 to 10 parts by weight of a glass frit; dispersed in (iv) an organic vehicle; and firing the conductive paste in air.

Method of manufacturing copper electrode

An ink jet recording apparatus comprises a recording head including a discharge port for discharging ink, a first liquid chamber at the upstream side in the direction of ink flow toward the discharge port, and a second liquid chamber at the downstream side, an ink tank for containing ink to be supplied to the recording head, an ink supply tube for causing the ink tank to communicate with the recording head, a shut-off valve provided in the ink supply tube and opening or closing the ink supply tube, a cap for covering the discharge port; and a suction pump for forcedly discharging the ink in the recording head from the discharge port when the cap covers the discharge port. The shut-off valve is opened when the first and second liquid chambers are reduced to respectively desired pressures by the suction pump in a state where the cap covers the discharge port and the shut-off valve is closed, whereby the ink in the ink tank is supplied through the ink supply tube to the first and second liquid chambers.

Ink jet recording apparatus

A liquid container which supplies ink to its exterior until the ink is almost depleted and allows simple detection of the remaining ink amount, is constructed to distribute components of the ink even after a prolonged standing. The liquid container is provided with a connecting portion for connection to an ink deriving tube and an air introduction tube of an ink jet printer. Both the ink deriving tube and the air introduction tube are positioned for connection to the connecting portion at a position deviated from a center of the bottom of the liquid container. The deviation facilitates mixing of ink components as ink is supplied from the container.

Liquid container, liquid supply system and ink jet recording apparatus utilizing the same, and method of mounting liquid container on recording apparatus

The invention prevents drawbacks resulting from the bubble generated at the downstream side of the filter, while minimizing the waste in the ink. The recording head has a sub tank for storing ink supplied from the exterior, and a liquid chamber storing the ink supplied from the sub tank and supplying ink directly to a nozzle for ink discharge. A filter is provided between the sub tank and the liquid chamber. The liquid chamber holds ink of a predetermined amount in such a manner that the ink therein is separated by gas between the filter and the liquid chamber.

Liquid supply system, ink jet recording head, ink jet recording apparatus and liquid filling method

The present invention discloses an elastic transformable body for adjusting vapor pressure, a vapor pressure adjustment chamber using the same, an ink-jet recording head having a vapor pressure adjustment device and an ink-jet recording device having the recording head, and more particularly to a vapor pressure adjustment device for adjusting negative pressure generated in a liquid chamber in an ink-jet recording head when discharging ink. The pressure adjustment chamber has at least one elastic transformation body having a changeable volume according to vapor pressure to adjust the vapor pressure in a container communicated thereto and a support for supporting the elastic transformation body to the container. In the pressure adjustment chamber, the elastic transformation body includes an approximately circular opening and two surfaces approximately flat before transformation at an outer circumference, in which the two surfaces have a shape extended through a curved portion at a front end opposite to the opening.

Pressure adjustment chamber, ink-jet recording head having the same, and ink-jet recording device using the same

An ink supply mechanism comprises an ink supply tube for supplying ink to a recording head, an ink supply needle communicated with a liquid flow path, and an air inducing needle communicated with an atmospheric communication port. The ink supply needle and the air inducing needle are communicated with the inside of a main tank by being penetrated through rubber plugs provided for the bottom of the main tank, respectively, to enable liquid paths to be communicated through the main tank. Also, both the ink supply needle and the air inducing needle are formed by conductive material, and a circuit is connected therewith to measure the electrical resistance of ink. The flow path is communicated with the atmospheric communication port by way of a portion positioned higher than the upper opening of the air inducing needle. With the structure thus arranged, the ink supply mechanism prevents ink from leaking from the atmospheric communication port.

Ink supply mechanism and ink jet recording apparatus

The invention is to connect a liquid container, having a fluid connecting portion and an information memory medium, to the main body of a recording apparatus without generating stress in both connecting portions. An information memory medium is fixed on the internal wall of a connection aperture of an information memory medium holder, which is contained in a space defined by an information memory medium holder containing portion and a bottom cover. The space is of a size capable of containing the information memory medium holder without contact thereto, and the information memory medium holder can change its position and direction in the space. The changes in the position and direction of the information memory medium holder allow to achieve fluid connection and connection of the information memory medium without generating stress in the connecting portions thereof, even if the fluid connecting portion and the connecting portion for the information memory medium in the main body of the recording apparatus have certain aberration in the relative position and relative direction.

Liquid container and recording apparatus

A recording apparatus for performing the recording operation of a recording medium conveyed by a conveying portion using a recording portion has an irregularity forming discharging portion for forming the recording direction crossing a conveying direction of the recording medium in a position of the recording medium opposed to the recording portion, and discharging the recording medium to the exterior of the recording apparatus. The recording apparatus also has a supporting member for supporting the recording medium discharged by the irregularity forming discharging portion so as to curve the recording medium in a concave shape with respect to a direction perpendicular to the conveying direction. The supporting member is arranged in a position corresponding to a convex portion near each of both end portions of the recording medium formed in the shape having the corrugated irregularities with respect to the conveying direction.

Recording apparatus

Printing head for printer

A plurality of ejection openings of an ink-jet head are divided into four blocks and ink ejection is performed for each block. An output of a photosensor which depends upon a number of ejected ink droplets interrupting light at a photosensor is sampled. On a basis of the sensor output, judgement is made whether ejection failure is present of the relevant block. This in ejection openings process is performed sequentially for other blocks. By this, even when a given rate of error is present in detecting precision of the photosensor, since overall number of ejection openings for which the detection is made is smaller, the number of faulty ejection openings which cannot be detected can be made smaller.

Ink-jet printing apparatus capable of detecting ejection failure of ink-jet head

The present invention provides an image forming apparatus includes a recording head to record an image on a sheet and having a carriage for shifting the recording head in a sheet width-wise direction, a convey rotary member for conveying the sheet past the recording head and for discharging the sheet after recording, a support for supporting one surface of the sheet, and a shift device for shifting the support between a support position where the sheet is supported above a discharge portion and a retard position where the sheet is not supported by the support. The shift device is switched in accordance with a position of the carriage and has a transmission for effecting ON/OFF of a driving force for rotating the convey rotary member.

Image forming apparatus having support means for supporting discharged sheets

In an ink-jet printing apparatus employing an ejection failure detecting construction for optically detecting the number of ink droplets interrupting a light path, when a power source for an apparatus is turned on, a home position is detected. A carriage is shifted from this point at a constant speed, and ink ejection is performed sequentially within zones P,to P,where a photosensor is present. Then, among variations of output of the photosensor by sequential ink ejection, the number of steps S of a motor up to a timing where the maximum output Vmax is output. In a subsequent process for detecting ejection failure, ejection is performed at this position.

Ink-jet printing apparatus and facsimile apparatus

The present invention provides sheet feeding apparatus comprises a sheet stacking means, a sheet feeding rotary member, conveying means, leading edge detecting means, driving means, and control means, and the control means controls a conveying amount of the sheet by the normal and reverse rotations of the conveying means, in accordance with a sheet leading edge blank amount and a normal rotation convey amount of the sheet.

Growing community of inventors

Kanagawa, Japan

Takeshi Kono