Canon Kabushiki Kaisha

Riichi Saito

Toshiaki Hirosawa

Yasutomo Watanabe

Shogo Kawamura

Noribumi Koitabashi

Shuzo Iwanaga

Masanori Takahashi

Tsuyoshi Kanke

Toshimichi Ouchi

Akira Yamamoto

Osamu Sato

Nobuyuki Kuwabara

Hiroyuki Morimoto

Minoru Nozawa

Noboru Toyama

Toshimori Miyakoshi

Takaharu Aotani

Kentarou Muro

Manabu Takayama

Tadayoshi Muta

Tadanori Suto

Jin Tachikawa

Hiroshi Seida

Yoshiaki Suzuki

Osamu Morita

Toshihiro Mori

Koichiro Nakazawa

Tetsuya Sekine

Akio Okubo

Yasuhiko Osaki

Naruyuki Nojo

In an ink jet printing apparatus, a moisture content of a print sheet is estimated without decreasing productivity of the printing apparatus and appropriate conditions of printing operation in the subsequent printing process are specified. More specifically, by measuring a change in thickness of the print sheet after printing, a state of moisture content is estimated. Estimating a state of moisture content allows determination of appropriate conditions of the printing operation such as a minimum drying time required for printing a high-quality image on various types of print sheets such as print coated paper or coated paper.

Ink jet printing apparatus and method for estimating moisture content of print sheet

In an ink jet printing apparatus of the present invention, a moisture content of a print sheet is estimated without decreasing productivity of the printing apparatus and appropriate conditions of printing operation in the subsequent printing process are specified. More specifically, by measuring a change in thickness of the print sheet after printing, a state of moisture content is estimated. Estimating a state of moisture content allows determination of appropriate conditions of printing operation such as a minimum drying time required for printing a high-quality image on various types of print sheets such as print coated paper or coated paper.

A recording apparatus has: a recording head having a liquid chamber and nozzles; a tank that stores the liquid which is supplied to the recording head; a liquid supply path that supplies the liquid from the tank to the liquid chamber; a supply pump provided on the liquid supply path; a liquid return path that returns the liquid from the liquid chamber to the tank; a return pump provided on the liquid return path; and a control unit that controls the supply pump and the return pump, wherein when the liquid is initially filled into the liquid chamber, the control unit drives the return pump so as to set the liquid chamber into a negative pressure state and subsequently drives the supply pump. The recording apparatus which can fill the liquid at a high speed without raising a pressure of a flow path can be provided.

Recording apparatus

A drying apparatus includes: a rotatable belt which has an outer surface and an inner surface, the outer surface contacts a sheet; a blowing mechanism which blows hot air on the sheet at a side of the outer surface; and a heating unit which includes a heating element and a contact surface which is disposed in contact with the inner surface. A plurality of rollers are arranged in a direction in which the sheet travels. The rollers are pressed against the outer surface of the belt with the travelling sheet being held between the rollers and the outer surface of the belt.

Drying apparatus and printing apparatus

An inkjet recording apparatus efficiently recovers defective discharge while reducing the amount of waste ink, acquires position information of a defective discharge nozzle and, based on the position information, determines whether the defective discharge has been caused by a bubble or a dust particle, and selects an ink circulation mode or a wiping mode.

Ink jet recording apparatus

During a cleaning operation, the following steps are executed. The steps includes a first step of pressurizing ink in a supply path to overflow the ink from a nozzle, a second step of stopping the pressurization, a third step of executing wiping while the pressurization is stopped and a negative pressure is not applied, and a fourth step of applying a negative pressure to the ink at the nozzle to generate a meniscus.

Inkjet recording apparatus

An ink jet printing apparatus according to the present invention includes a dryer configured to dry ink on a print medium. The dryer includes a heating unit configured to heat air in the dryer, and an outside air adjustment mechanism configured to adjust the amount of outside air introduced into the dryer. When the outside air adjustment mechanism is controlled so that the outside air introduction amount is increased, before the control of the outside air introduction amount, the heating unit is controlled so that heated air heated by the heating unit is preheated to a second target temperature higher than a predetermined first target temperature for a normal operation. Even if the outside air introduction amount is actually increased to temporarily reduce the temperature of heated air, the temperature of the heated air can be maintained at a value required for sufficient drying.

Ink jet printing apparatus and drying control method for the same

In order to hermetically seal more surely a gap between a back surface of a liquid discharge substrate and a front surface of a support member, and an electrode portion etc., without adversely affecting discharge performance, a liquid discharge head includes a first sealing resin coated on a portion between the liquid supply port and the pad on the support surface so as to surround a tip end portion at the liquid supply port of the support member and a second sealing resin for sealing a gap between the support member and the liquid discharge substrate, and a peripheral part of the liquid supply port.

Liquid discharge head and method for manufacturing the same

A printing head is provided in which a distance between an ejection port face of the printing head and a print medium is reduced to improve an ink ejection accuracy during a printing operation. The printing head of the present invention is a back shooting-type printing head. The heater and an electrode connected thereto are formed at the back face of the substrate. The electrode and an in-support-base wiring for supplying electricity to the heater via the electrode are connected to each other at the back face side of the substrate. The substrate and the support base have therebetween a liquid chamber wall member including therein a space. The substrate, the support base, and the liquid chamber wall member constitute a liquid chamber that communicates with the ejection port and that stores ink supplied to the ejection port.

Ink jet printing head

An ink jet print head is provided which allows an ejection opening-formed surface to be cleaned well and can improve a precision with which ejected ink lands on a print medium. For this purpose, conductive layers of a conductive material are formed on the support substrate and planarized. The liquid ejection substrates are mounted on the support substrate with high precision, without a sealing agent, that protects electrical connecting portions on the liquid ejection substrates, protruding from the ejection opening-formed surface.

Ink jet print head and method of manufacturing ink jet print head

A highly reliable, small-sized, and inexpensive ink jet recording head includes an electrical wiring member that is joined with a back surface of a liquid discharge substrate and includes a liquid supply port communicating with a liquid supply port of the liquid discharge substrate and an electrical connection portion connected to the electrode; and a holding member that holds the liquid discharge substrate through the electrical wiring member and includes a liquid supply port for supplying the liquid to the liquid supply port of the liquid discharge substrate. The liquid supply ports of the electrical wiring member, the liquid discharge substrate, and the holding member communicate with one another. A sealing agent for sealing the electrical connection portion is filled up between the liquid discharge substrate and the electrical wiring member, and a side surface of the liquid supply port of the electrical wiring member is covered with the sealing agent.

Ink jet recording head and recording apparatus

A highly reliable, compact, and inexpensive ink jet recording head, includes a liquid discharge substrate having on a front surface side a discharge port for discharging a liquid, and having, on a back surface side, a liquid supply port for supplying the liquid to be discharged from the discharge port, and an electrode for transmitting and receiving a signal to drive energy generation means for discharging the liquid from the discharge port; a film-like electrical wiring member joined to the back surface of the liquid discharge substrate, the film-like electrical wiring member including a liquid supply hole communicating with the liquid supply port of the liquid discharge substrate, and an electrical connection portion connected to the electrode; and a retaining member for retaining the liquid discharge substrate with the electrical wiring member interposed therebetween, the retaining member including a liquid supply port for supplying the liquid to the liquid supply port of the liquid discharge substrate.

Ink jet recording head and ink jet recording apparatus

In order to dissipate to a high degree of efficiency the heat of a liquid discharge substrate of an ink jet recording head and effectively suppress increases in the substrate temperature, in an ink jet recording head in which a liquid discharge substrate is mounted on a supporting member through a foil-shaped heat dissipation member, the area of the heat dissipation member is greater than the projected area of the liquid discharge substrate with respect to the supporting member.

The semiconductor device of the present invention comprises a substrate; at least one through hole formed through the substrate between front and back surfaces of the substrate; an electrical connection portion formed by a semiconductor process on at least one surface of the front and back surfaces of the substrate in a vicinity of an end opening of the through hole; an insulating layer formed of an organic material on an inside surface of the through hole; and an electroconductive layer formed on an inside surface of the insulating layer, wherein the electrical connection portion is electrically connected to the electroconductive layer to be electrically connected to a side of the other surface of the substrate.

Growing community of inventors

Fujisawa, Japan

Riichi Saito