Canon Kabushiki Kaisha

Yasushi Murayama

Takashi Uchida

Tomohiro Aoki

Masaharu Nemura

Tatsuo Mitomi

Tohru Kobayashi

Masatoshi Ikkatai

Yasuyuki Takanaka

Kazuyoshi Chiku

Kunihiko Matsuzawa

Yoshihiko Hirose

Yasushi Miura

Haruhiko Moriguchi

Osamu Hoshino

Kazunori Kanekura

Ken Tsuchii

Makoto Takamiya

Hidejiro Kadowaki

Kosuke Yamamoto

Masafumi Wataya

Toshiyuki Yanaka

Akio Ohno

Haruhiko Takahashi

Yukio Sato

Hisashi Fukushima

Nobuhiko Takekoshi

Hiroyuki Miyake

Kimiyoshi Hayashi

Kazuhiko Hirooka

Ken Miyagi

Yoichi Kubota

Katsumasa Nishikawa

Shinji Yamamoto

Akio Suzuki

Jiro Moriyama

Yutaka Koizumi

Hideaki Mitsutake

Toshiaki Hirosawa

Hiroshi Ito

Mineo Kaneko

Torachika Osada

Ichiro Okumura

Yoshihiro Takada

Hidemi Kubota

Masami Izumizaki

Isao Hayashi

Makoto Shihoh

Masaaki Naoi

Yoshihiro Shigemura

Kosuke Fujimoto

Kiyoharu Tanaka

Yusaku Takada

Ayako Uji

Hideyuki Tanaami

An image forming apparatus includes first and second image bearing members on which toner images are to be formed, a conveying member, and a conveying member position index detecting device for detecting a conveying member position index provided on the conveying member. The apparatus also includes an image bearing member position index detecting device for detecting image bearing member position indices provided on the second image bearing member, an adjusting device for adjusting a rotational speed of the second image bearing member, and a controller for controlling the adjusting device so as to adjust a position of an image bearing member position index correspondingly to the conveying member position index, on the basis of detection results of the conveying member position index detecting device and the image bearing member position index detecting device.

Image forming apparatus with image bearing member adjustment

An ink jet recording apparatus for effecting recording on a recording material by ejecting ink from an array of ejection outlets provided in an ejection side surface of a recording head, includes a cleaning mechanism, including an absorbing member for absorbing and removing the ink deposited on the ejection side surface, for cleaning the ejection side surface by moving the absorbing member in contact with the ejection side surface in a direction in which the array of the ejection outlets extends; wherein the absorbing member comprises a plurality of absorbing materials having average pore sizes different from each other and contacted with each, and an absorbing material having a larger average pore size is contacted to the ejection outlet to absorb the ink.

Ink jet recording apparatus

In manufacturing a long ink jet print head in which a plurality of chips are arranged, a decrease in yield resulting from inappropriate arrangement of the chips can be suppressed and high-quality images can be printed. An image corresponding to the joining portion between adjacent chips is printed by using, as overlapping nozzles, those of the nozzles located in the joining portion which are selected on the basis of the amount of misalignment between chips.

Ink jet printing apparatus, ink jet print head, ink jet printing method, and method and program for setting print conditions

An apparatus is capable of securely cleaning foreign matter, such as ink, attached to a discharge port surface with good efficiency, even in the case of a broad discharge port surface such as in a full-line type apparatus, and capable of preventing a discharge defect of the ink or deviation in a discharge direction, so as to perform satisfactory recording. The apparatus includes: an absorbing roller, formed of a rotatable roller-shaped porous absorbing material, for wiping/removing foreign matter, such as ink, attached to a discharge port surface, and wipers, formed of plate-shaped rubber-like elastic materials, for sweeping/removing the foreign matter attached to the discharge port surface. The absorbing roller is moved ahead when both the absorbing roller and the wiper are brought into contact with the discharge port surface and moved in an arrangement direction of discharge ports along the discharge port surface.

Ink jet recording apparatus having an ink absorbing member and a wiping member

A cleaning apparatus and method for removing a recording ink from a surface of a recording material conveying belt of a recording apparatus. The method includes the steps of contacting a blade member to a surface of the recording material conveying belt and contacting an ink absorber member to a surface of the recording material conveying belt, thus removing from the belt surface an improper discharge of recording ink.

Apparatus and method for cleaning a recording material conveying member using blade member and ink absorber

An ink jet recording apparatus for recording an image by discharging ink from an ink jet recording head to a recording medium at a recording position, the apparatus being capable of recording the image on different recording media having different absorptivities. The apparatus conveys the recording medium along a conveyance route from the recording position, and heats the recording medium at a predetermined position in the conveyance route of the recording medium. In a first operational mode, an operative condition corresponds to a recording medium with a first absorptivity. In a second operational mode, a non-operative condition corresponds to a recording medium with a second absorptivity higher than the first absorptivity. In the invention, the ink jet recording apparatus enters the first operational mode after an electrical power is applied thereto.

Ink jet recording apparatus having a heat fixing mechanism

A recording apparatus builds an image at high quality without occurrence of malfunctions attributable to raised/recessed spots on the surface of a conveyance belt and insufficient dimensioning for the width of the conveyance belt, while preventing the interior of the recording apparatus from being contaminated with erroneously ejected ink. The recording apparatus includes a conveyance belt for conveying a recording sheet below four kinds of recording heads, and the conveyance belt has a joint line along which the opposite ends of a band-shaped material are joined to each other. In addition, the conveyance belt has a band-shaped colored portion which is located remote from the joint line by a predetermined distance. The colored portion is detected by an optical sensor, and a control unit controls the driving of the conveyance belt in response to a signal derived from the detection of the optical sensor.

Ink jet printing apparatus with print medium conveyance belt

Image recording apparatus characterized by being equipped with the carriers to carry recording sheet, recording head, carrier guides which is so arranged as placing the carriers in between the guides and the recording heads and pushing members provided in between the recording heads and the carrier guides, the carrier guides being rotatively supported.

Image recording apparatus

An image recording apparatus is equipped with a conveying belt member for carrying a sheet member, a recording head holding member for holding a head for recording on the sheet member, and guide members for supporting and guiding the conveying belt member. The first guide member is provided upstream of the recording head holding member, the second guide is provided downstream of the first guide, and the third guide is provided between the first and second guides. The third guide member displaces the conveying belt member toward the recording head holding member.

Recording medium conveying mechanism for image recording apparatus

A cleaning method for removing a recording ink from a surface of a recording material conveying belt of a recording apparatus. The method includes the steps of detecting a recording material jam; press contacting a cleaning member to a surface of the recording material conveying belt in response to the detected jam, thus removing from the belt surface an improper discharge of recording ink; and separating the cleaning member from the surface of the conveying belt after cleaning for a period of time. The period of time is determined based upon an amount of the recording ink discharged onto the conveying belt surface.

Cleaning method for cleaning a recording material conveying member after

An ink jet recording apparatus includes a fixing unit which heats a recording medium at a location in a conveyance route following recording to fix the recorded image. The fixing unit has a first heating member which heats a recording surface of a recording medium, a second heating member which heats a reverse surface of the recording medium, and a fan which blows air from the first heating member location in the conveyance route. A timer delays turning on the fan after energization of the first heating member.

The present invention provides an ink jet recording apparatus comprising a conveying means for a recording medium in a substantially horizontal direction, a head holding means for holding a plurality of ink jet heads in such a manner that the ink jet heads discharge ink vertically downward toward the recording medium conveyed by the conveying means in the substantially horizontal direction, a vertical shifting means for shifting the head holding means in a substantially vertical direction, a head recovery means for recovering and preventing the non-discharge of ink from the plurality of ink jet heads, in a condition opposed to the plurality of ink jet heads, and a horizontal shifting means for shifting the head recovery means in the substantially horizontal direction into a spatial area provided above the recording medium by lifting the head holding means in the substantially vertical direction by means of the vertical shifting means, so that the head recovery means is opposed relation to the plurality of ink jet heads. The head recovery means is provided with a waste ink opening for exhausting waste ink discharged from the ink jet head to the head recovery means in a recovery operation. The apparatus also includes incline means for inclining the head recovery means. When the head recovery means is retracted from the ink jet head, the head recovery means is inclined so that the side thereof having the waste ink opening is lower than the opposite side.

Ink jet recording apparatus with movable recovery assembly

An ink jet apparatus has an ink jet head with a heat generating resistance element, which head discharges ink droplets by causing a state change in ink using heat generated by the resistance element, conveying means for conveying a recording medium to be recorded upon in a conveyance direction so that a predetermined recording image is formed on the recording medium by ink droplets from the head, heat exchanging means for exchanging heat with the head, this exchanging means being attached to the side of the head where the element is provided, and heating means for heating the exchanging means, the heating means being part of the heat exchanging means. It also includes a cooling means for cooling the heat exchanging means, temperature detecting means for detecting the temperature of the heat exchanging means, and control means for controlling driving of the heating means and cooling means according to the temperature detected by the temperature detecting means. The head to which the heat exchanging means is attached is joined to the apparatus so that the heat exchanging means is positioned at a downstream side in the conveyance direction of the recording medium.

Jet apparatus having an ink jet head and temperature controller for that

A belt driving apparatus for carrying material to be recorded to a plurality of image recording units. In the belt driving apparatus, the distance of movement of material to be recorded corresponding to one rotation of the belt driving roller has been set to n (an integer)-times (where n=2, 3, 4 . . . ) as long as a distance between each image recording unit. A distance between one image recording unit and another recording unit is equal to or an integral fraction of .pi.(D+2 t), wherein D is the diameter of a drive roller driving the belt and t is the thickness of the belt.

Belt driving apparatus and image recording apparatus using the same

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Tokyo, Japan

Yasushi Murayama