Canon Kabushiki Kaisha

Masakazu Ozawa

Ryuichi Ebinuma

Tetsuo Suzuki

Katsunori Hatanaka

Kunitaka Ozawa

Tetsuzo Mori

Tadashi Shiina

Atsushi Saito

Hiroo Ichihashi

Haruyuki Matsumoto

Masami Ikeda

Hiroshi Sugitani

Hiroto Matsuda

Takashi Miyazaki

Kunio Watanabe

Eiichi Motai

Toshimitsu Hirakue

Masanori Morita

Yutaka Koizumi

Takashi Watanabe

Yukuo Nishimura

Shigeyuki Matsumoto

Shigeru Yoshimura

Shinya Matsui

Junichi Asano

Kenji Kurita

Tetsuto Kageyama

Shinichi Seito

Akira Miyagawa

Hiroaki Noaki

Kiyohide Kojima

Ryuichi Ebinuna

An ink jet recording apparatus includes a recording head for effecting recording by ejecting ink onto a recording material and a holder for holding the recording head while it is not used for recording. The holder includes a cap for sealing an ejection outlet of the recording head, and the cap includes ink absorbing material for maintaining wetness of the ejection outlet.

Ink jet recording apparatus with cartridge storage

A recording apparatus having a memory for storing recording data, and an address counter for controlling addresses in the memory in the direction of the columns or rows. The address counter controls a read start address for starting a process of reading the memory, thereby compensating for deviations in the longitudinal or widthwise direction of recording paper.

Printer apparatus

A roller comprises a rotary shaft, an outer peripheral wall member for defining an outer peripheral surface to be contacted with a sheet, and a support member for supporting the outer peripheral wall member so that the outer peripheral wall member surrounds the rotary shaft. The support member defines a space between the rotary shaft and the outer peripheral wall member and supports the outer peripheral wall member with maintaining a condition that the outer peripheral wall member is deformed to swell radially outwardly.

Sheet-supplying roller recording device

A recorder comprises a recording device housing for housing a device for forming a record on record medium at a record position and a relatively movable stacker for stacking record media recorded by the recording device and having an open side for removing the stacked media. A convex area on the bottom of the stacker extends othogonally to the length of the stacker at a position spaced from the lengthwise center of the stacker toward the open side. The convex portion inhibits movement of the stacked media which could occur through shocks received by the recorder.

Recorder having a paper stacker that inhibits inadvertent movement of

A recorder comprises a recording device housing for housing a device for forming a record on record medium at a record position and a relatively movable stacker for stacking record media recorded by the recording device and having an open side for removing the stacked media. A convex ara on the bottom of the stacker extends othogonally to the length of the stacker at a position spaced from the lengthwise center of the stacker toward the open side.

Recorder having a recording device and a relatively movable stacker for

A recorder has a recording device for recording on a record medium and a feed unit for feeding the medium to the recording position. Feed and press rollers are provided with apparatus for urging the press roller to and from the feed roller and a locking device can lock the press roller at a pressing position.

Recorder having record medium feed and press rollers and lockable means

In a liquid jet recording head having a liquid discharging conduit, the ratio of the average cross-sectional area of the conduit at the liquid introducing region to that at the energy actuating region is greater than 1.

Liquid jet recording head

A capping device for an ink jet recorder is provided with a support frame of substantially L-shaped cross-section contained in a frame and supporting an ink absorbing member inside thereof, and a throttle plate in contact with the underside of the absorbing member and disposed substantially parallel to the support frame, the capping device being so disposed that the rear end edge of the throttle plate opposite to a recording head is situated vertically below the side edge surface of the recording head. The specification also discloses an ink jet recording apparatus having such capping device. (FIGS. 1 and 6-8). A flow path for directing liquid squeezed from the absorbing member has upper and lower stages, the upper stage having a sufficiently large diameter that a liquid meniscus does not form and the lower stage having a small diameter that permits a meniscus to form. (FIGS. 9 and 10).

Ink jet recording apparatus and capping device

An ink jet recording apparatus has a recording head for discharging ink and effecting recording, a recording flow path communicating the recording head with one end of a first ink tank, a pump side flow path communicating the first ink tank with the recording head through a pump and, together with the recording flow path, constituting an ink circulation path through the head and the first ink tank, and a secnd ink tank for supplying ink to the first ink tank. Normally open electrical opening-closing means (FIG. 11) are provided in the recording flow path and in a tube for opening the first ink tank to atmosphere. Another normally open electrical opening-closing means and a check valve permitting the passage of ink from the pump only to the recording head, this latter opening-closing means and the check valve being interposed in series in the pump side flow path between the pump and the recording head. The apparatus also may include an overflow sensor (FIGS. 9 and 10) for detecting the amount of ink that has overflowed from the first ink tank and a water hammer damper (FIG. 14) that absorbs fluid shocks in the pump side flow path. The second ink tank may have excised portions (FIGS. 15, 16 and 18) to ensure that color ink tanks are properly mounted to the apparatus.

Ink supply device and an ink jet recording apparatus having the ink

A temperature control system for an ink jet printer has a plurality of head units each having a heater and a temperature sensor, and a fan for cooling the plurality of head units in which the fan has a heat transfer coefficient represented by a gradient of a first line connecting a maximum heat generated by heads corresponding to a sum of heat generated by the head units and heat generated by said heaters and a maximum operable temperature of said printer, and said heaters each has a heat transfer coefficient represented by a gradient of a second line connecting said maximum heat generated by the heads and a minimum operable temperature of the printer.

Temperature control system and ink jet printer utilizing the temperature

A method of making an ink jet head with an orifice plate having an orifice extending therethrough for ink ejection involves the steps of adhering a photosensitive plate to the ink jet head to cover the outlet of a liquid passageway in the head, aligning a pattern mask with the ink passageway, exposing the photosensitive plate in-situ to radiation through the pattern mask, and removing portions of the photosensitive plate in accordance with the radiation pattern to form in the photosensitive plate an orifice aligned with the outlet.

Method of making an ink jet head involving in-situ formation of an

An ink jet recorder has a head assembly removably mounted on a recorder body, said head assembly having a plurality of head elements each including a plurality of nozzles arranged widthwise of a record sheet, and a removable cover for covering front sides of said head elements, comprising a connector for electrical connection with the recorder body removably mounted on the head assembly by a lever, and a knob mounted on the cover to mechanically engage or disengage the head assembly with or from the recorder body, the cover being constructed such that it cannot be mounted unless the lever is in a position to disconnect the connector.

Ink jet recorder

A recorder for recording on a continuous form, perforated, recording sheet includes a first roller disposed upstream of the recording position for feeding the continuous form to the recording position, press roller means for pressing the continuous form against said first roller, a second roller disposed downstream of the recording position for maintaining the continuous form in tension across the recording position, and apparatus for decrumpling, disposed between the recording position and the first feed roller.

Continuous-form recorder having decrumpling means for removing creases

An ink jet recording apparatus has an improved head plate having a plurality of recording heads, a plurality of openings corresponding to the outlet port of each recording head, and a guide groove to lead ink liquid from the openings to a discharge port, the guide groove being gradually tapered downwardly to the discharge port.

Ink jet recording apparatus

An ink jet head comprises an orifice plate constituted of a hardened film of a photosensitive resin having an orifice which extends therethrough in the direction of its thickness.

Growing community of inventors

Ebina, Japan

Masakazu Ozawa