Canon Kabushiki Kaisha

Tetsuji Kurata

Hideo Fukazawa

Hirofumi Hirano

Akira Kida

Atsushi Kohnotoh

Hiroki Hayashi

Hiroyuki Inoue

Makoto Takemura

Masaya Uetsuki

Koji Terasawa

Koichiro Kawaguchi

Shinya Asano

Katsuyuki Yokoi

Hideaki Okamoto

Seiji Ogasawara

Toshihide Wada

Hiroshi Netsu

Kazuhiko Shinoda

Noriyasu Asaki

Yohji Ara

Yasunori Saito

Tetsuyo Ohashi

Tadashi Hanabusa

Toshihiko Bekki

Masakazu Tsukuda

Koh Hasegawa

Takahide Onuma

Atsushi Arai

Hiromasa Amma

Takuya Iwano

Noboru Shimoyama

Hiromitsu Hirabayashi

Masahiko Kubota

Hitoshi Sugimoto

Shigeyasu Nagoshi

Yuji Akiyama

Miyuki Matsubara

Toshiaki Hirosawa

Yasushi Ishida

Yoshinori Itoh

Nobuhito Yamaguchi

Junji Shimoda

Soji Kondo

Hiroshi Arimizu

Arihito Miyakoshi

Yusuke Imahashi

Toshiya Matsumoto

Keiji Takahashi

Hideaki Nagahara

Yoshitaka Okamura

Tomoki Tsuji

Yosuke Kitagawa

Shinichi Sato

Tetsuya Ishikawa

Hiroyuki Tanaka

Kosuke Yamamoto

Tsutomu Kawai

Junichi Yoshikawa

Yasuyuki Hirai

Shoji Kikuchi

A cassette comprises a housing portion configured to have a placement face on which sheets are placed and to house sheets; and a standing wall configured to constitute a portion of the housing portion, and to regulate sheets on a back end side in a conveyance direction of sheets to be conveyed from the placement face to a printing apparatus, wherein the standing wall includes a protrusion that protrudes toward the placement face at a position above a predetermined position, which is at a height of sheets that can be stacked on the placement face.

Cassette and printing apparatus

A cassette comprises a storage portion configured to include a loading surface on which a sheet is loaded, a sheet guide configured to pivot with respect to a pivot central axis that is parallel to the loading surface, a pivot support shaft extending on two sides of the sheet guide along the pivot central axis, in the sheet guide, and a bearing portion configured to pivotably support the pivot support shaft, an insertion portion formed at a portion of the pivot support shaft, an insertion groove formed from the loading surface toward the bearing portion, and a flexible pressing portion disposed outside the insertion groove, and configured to press a leading end portion of the pivot support shaft.

A print head can suppress contamination due to ink at the time of being mounted on a printing apparatus and/or after being detached from the printing apparatus. For this purpose, a positioning pin longer than a needle is provided in a joint unit of the print head, and the joint unit includes a shutter which closes an opening on a supply side and an opening on a collection side when the print head is detached.

Print head and printing apparatus

An inkjet printing apparatus includes a print head ejecting ink, a tank reserving ink to be supplied to the print head and a joint unit being capable of connecting the print head and the tank to each other. The joint unit has a connecting portion for supplying ink to the print head and a shaft that is rotatable by a drive source so as to move in an axial direction. The connecting portion moves together with the shaft. The print head includes a head joint connectable to the connecting portion and an engaging portion engageable with one end of the shaft. The shaft is rotated to be engaged with the engaging portion so that the head joint and the connecting portion are connected to each other.

Inkjet printing apparatus

An inkjet printing apparatus includes a print head, to which a protective member configured to protect an ejection opening surface is attachable, and a head holder configured to hold the print head detachably. The inkjet printing apparatus further includes a guide portion provided in the head holder and configured to guide, in a width direction, the print head with the ejection opening surface protected by the protective member. The guide portion guides the print head with the protective member attached up to a predetermined position in the width direction and guides only the print head ahead of the predetermined position to prevent the protective member from exceeding the predetermined position.

The printing apparatus of the present invention includes: an openable cover that covers a head holder that mounts a print head detachably and an ink tank, detachable from the apparatus, configured to store ink to be supplied to the print head; a lock unit capable of switching between a lock state where the cover is fixed to a closed position and an unlocked state where the cover is not fixed to the closed position; and a control unit configured to control, in a case of receiving instructions to detach the ink tank, the lock unit to switch to the unlocked state after controlling a holder moving unit to move the head holder to a position at which the print head is undetachable, as well as controlling a pressurizing supply unit to stop pressurization and supply ink from the ink tank to the print head.

Printing apparatus and method for controlling the same

A liquid ejection head unit is formed by arranging a plurality of recording element substrates in a first direction. Each recording element substrate has an ejection orifice from which a liquid is ejected. The liquid ejection head unit includes rail portions extending in the first direction and a protective member which is detachably fitted on the rail portions. The protective member is movable along the rail portions between a first position and a second position. The first position allows the protective member to cover whole surfaces of the plurality of recording element substrates. The second position allows the plurality of recording element substrates to be exposed so as to allow a liquid to be ejected from the ejection orifices.

Liquid ejection head unit and liquid ejection apparatus

A platen includes: a supporting portion that can support a sheet; a suction unit that sucks the sheet in such a manner as to attach the sheet to the supporting portion; a first ink receiver that receives ink ejected downstream of the leading end of the sheet passing the supporting portion; and a second ink receiver that receives ink ejected upstream of the trailing end of the sheet passing the supporting portion.

Printing apparatus and platen

A platen includes a plurality of supporting portions capable of supporting a sheet; negative pressure chambers, to which a negative pressure is supplied, so as to suck a sheet facing the supporting portions to the supporting portions; and an ink receiver that receives ink ejected from a printhead to the outside of the sheet supported by the supporting portions. The plurality of supporting portions are arranged in a sheet width direction transverse a sheet conveyance direction. The plurality of negative pressure chambers are disposed in a manner corresponding to the plurality of supporting portions, respectively.

A liquid ejection head unit includes a page-wide type liquid ejection head detachably attached to a liquid ejecting apparatus and a protective member detachably attached to the liquid ejection head. The liquid ejection head includes an ejection port surface on which ejection ports are provided. The liquid ejection head includes a first rail portion, the protective member includes a second rail portion along a longitudinal direction thereof, and the protective member is made to slide in a first direction along the longitudinal direction of the liquid ejection head and cover the ejection port surface. The protective member is attached to the liquid ejection head, and then the liquid ejection head and the protective member are moved in a second direction opposite to the first direction and are removed from the liquid ejecting apparatus.

Liquid ejection head unit and liquid ejecting apparatus

A printing apparatus includes a suction unit configured to allow a negative pressure, by which a sheet is sucked to a supporting portion, to act on the sheet; and ink receivers configured to receive ink ejected outside of the sheet. Waste ink ejected to the ink receivers is guided to a waste ink discharge port formed on an outer peripheral wall of a platen through waste ink channels. A sheet sucking mechanism configured to apply the negative pressure is disposed adjacent to the suction unit. A discharging mechanism configured to forcibly discharge waste ink outside of the platen is connected to the waste ink discharge port.

Marginless printing is performed by using a printhead which ejects ink. Information on an inclination of a sheet to be conveyed is obtained, and in performing the marginless printing at a leading end of the sheet, an image region with respect to which ink is discarded to an outside of the sheet is set based on the obtained information. Further, a platen which supports the sheet by sucking in a manner facing the printhead which ejects the ink is provided and control is performed such that in performing printing sequentially from the leading end to a trailing end of the sheet, suction force of the platen is decreased upon approach of a portion to be printed to the trailing end of the sheet.

Performing marginless printing based on image data

Growing community of inventors

Yokohama, Japan

Tetsuji Kurata