Canon Kabushiki Kaisha

Tokihide Ebata

Mitsuru Kurata

Haruo Uchida

Shigeyoshi Onoda

Yasushi Miura

Hiromitsu Hirabayashi

Noribumi Koitabashi

Hitoshi Sugimoto

Shinji Kanemitsu

Akihiro Nomura

Hiroyuki Miyake

Yasuyuki Takanaka

Kazuyoshi Takahashi

Yasuo Miyauchi

Eiichi Takagi

Yoshiko Miyashita

Akio Takeda

Akio Suzuki

Makoto Aoki

Masahiro Nishio

Yoshihiro Takada

Tomohiro Aoki

Masatoshi Ikkatai

Keiju Kuboki

Yutaka Udagawa

Kunihiko Matsuzawa

Nobuhiko Ogata

Hideyuki Tanaami

Takeshi Irizawa

Chikanobu Ikeda

Yoshio Komaki

Hiroshi Tajika

Naoji Otsuka

Takahiro Mori

Atsushi Arai

Hideaki Takada

Shinichi Sasaki

Kazuyuki Kondo

Michitaka Setani

Kenji Aono

Hiroyuki Kuriyama

Kazunari Nishimoto

Haruo Tsunoi

Takeshi Kuwayama

Kiyokazu Namekata

Takuji Niizawa

An ink jet head cartridge includes a recording head for ejecting ink; an ink container for containing the ink to be supplied to the recording head; an air venting opening for communication between the container and ambience to allow supply of the ink from the container to the recording head; wherein the air venting opening is constituted by an outside opening and an inside opening and a passage connecting them, the passage has a length larger than a thickness of the ink container.

Ink jet apparatus and ink jet cartridge and ink container mountable thereto

An ink jet textile printing method forms an image on cloths in an image forming operation by repeating a step of applying ink on the cloths from an ink discharge port of a recording head, the recording head relatively main-scanning to form the image in a main scan direction, and a step of relatively conveying the cloths in a sub-scan direction. The method includes the steps of forming the image on the cloths by applying ink on the cloths from the recording head based on image data. The method further includes the step of temporarily stopping the image forming operation in accordance with an indication to effect a temporary halt of the image forming operation. When the temporary halt is indicated while the recording head performs a main scan in the image forming operation, the image forming operation by the main scan is completed, and then the temporary halt of the image forming operation is effected by moving the recording head to a standby position. The method still further includes the step of releasing the temporary halt of the image forming operation and restarting the image forming operation in accordance with an indication for releasing the temporary halt of the image forming operation. When the release of the temporary halt is indicated, ink is discharged from the ink discharge port and then the image forming operation is restarted.

Textile ink jet recording method with temporary halt function

An ink-jet printing apparatus restricts fluctuation of the printing density due to coagulation and settling of a coloring agent in a water based ink, in which a water insoluble coloring agent or a coloring agent having low water solubility is dispersed. By this, movement of the ink caused due to difference of specific gravity caused by coagulation of the coloring agent or so forth in an upper passage to a lower passage can be restricted to successfully prevent increasing of difference of ink density.

Ink-jet printing apparatus

An ink jet textile printing apparatus for performing printing by reading an original image created by a designer, converting the original image into original data represented by an electric signal, retrieving the original data for processing to be output as image data, and recording data on cloth based on the image data. The ink jet textile printing apparatus has a first ink jet recording head provided upstream of a recording position, and a second ink jet recording head provided downstream thereof, and is provided with a drying unit located between the recording heads, whereby high-quality recorded images with less bleeding can be obtained by recording on a recording area again with the second ink jet recording head after drying the recording area on the cloth recorded by the first ink jet recording head with the drying unit.

Ink jet recording method and apparatus and recorded matter

An ink jet head cartridge includes a recording head for ejecting ink; an ink container for containing the ink to be supplied to the recording head; an air venting opening for communication between the container and ambience to allow supply of the ink from the container to the recording head; wherein the air venting opening is constituted by an outside opening and an inside opening and a passage connecting the openings, the passage has a length larger than a thickness of the ink container.

Ink jet apparatus and ink jet cartridge having an ink container with a

An image forming apparatus includes conveying device for conveying a printing medium in the substantially horizontal direction in the printing range where a printing agent is applied to the printing medium while a printing plane of the printing medium orients in the upward direction, a printer section including a plurality of printing heads located opposite to a platen portion of the printing range for applying the printing agent to the printing medium in the downward direction so as to form printed images on the printing medium by activating the printing heads, and supporting device for slidably displacing the printer section relative to the platen portion in the conveying direction of the printing medium conveyed by the conveying device, between the position where the printer section is located opposite to the platen portion and the non-opposing position spaced away from the preceding position. With such construction, a maintenance service can easily be conducted for the conveying device.

Image forming apparatus

An image formation apparatus comprises a cap to cover the discharge ports of a recording head for discharging ink for the formation of images; rinsing liquid supply means for supplying rinsing liquid for rinsing the cap; and a rinsing liquid receptacle arranged to surround the cap for receiving and retaining the rinsing liquid. With the structure thus arranged, the image formation apparatus is able to prevent ink from being dried in the recording head, and at the same time, to rinse out ink and other dust particles adhering to the discharge port surface of the recording head, and to the cap, a member constituting the device to recover the discharging condition of the apparatus, thus preventing the adhesion of extracted substance resulting from the evaporation of water content in ink for the maintenance of stable ink discharges.

Cap for ink jet recording head with rinsing liquid supplied thereto

An ink jet printing apparatus for industrial use, which is provided with a comparatively large number of nozzles arranged for high duty recording, particularly an ink jet textile printing apparatus, and an ink jet printing apparatus suitably used for printing on a large-sized medium, are provided together with a method for controlling the temperature of the printing head of such high duty printing apparatuses, and various other types of printing apparatuses reliably. To the large number of heaters used for recording in a printing step, driving signals are applied to cause them to discharge ink for recording and, to the discharge heaters that are not to perform recording, secondary driving signals that do not allow ink to discharge are applied. These secondary driving signals cause the heaters not used in recording to generate heat, so as to reduce unevenness in the intensities of heat generation among the many discharge heaters of the printing head. At the same time, cooling water is supplied by a cooling device to a cooling liquid path arranged for the printing head in order to cool it.

Printing apparatus and method for controlling the temperature of a

An ink-jet print head comprises a plurality of heater boards as unit substrates which are connected to each other and each of which has a plurality of discharge elements arranged therein so that the nonuniformity of density which would ordinarily be produced in portions of the image printed by the head corresponding to boundaries between the respective heater boards is decreased. Since a plurality of ink-jet heads are disposed so that the boundaries between respective heater boards of the heads do not overlap one another, the potential nonuniformity of density at the boundaries can be decreased by interrelation between the heads.

Ink-jet printing apparatus and ink-jet head unit

A serial type ink jet printing apparatus for textile printing sets a print beginning position and a print ending position so that the space between the print beginning position and the print ending position is wider than the textile printing medium. When the printing operation is performed, a small amount of ink is discharged from an ink jet head onto a textile support member before the head reaches the textile printing medium, by which ink with high viscosity can be exhausted in a continuous printing operation before printing on the textile. Therefore, the textile can be efficiently printed entirely from edge to edge with high quality, and a separate ink receiver for receiving the preliminarily discharged ink is rendered unnecessary.

Ink jet printing on the full width of a printing medium

A sheet feeding apparatus comprising, a feeding device for pinching a sheet and for selectively performing an operation for temporarily stopping a sheet supplied from an upstream side by abutting a leading end of the sheet against a nip of the feeding device and then feeding the sheet toward a downstream side and an operation for feeding a sheet supplied from the downstream side toward the upstream side; a guide mechanism shiftable between a first position near the nip to direct the sheet supplied from the upstream side to the nip of said feeding device, and a second position far away from the nip than the first position; and a biasing mechanism for biasing the guide mechanism to the first position when the feeding device feeds the sheet supplied from the upstream side toward the downstream side and for biasing the guide mechanism to the second position when the feeding device feeds the sheet supplied from the downstream side toward the upstream side.

Sheet feeding apparatus

An ink-jet printing apparatus restricts fluctuation of the printing density due to coagulation and settle out coloring agent employing a water based ink, in which a water insoluble coloring agent or the coloring agent having low water solubility is dispersed. By this, movement of the ink caused due to difference of specific gravity caused by coagulation of the coloring agent or so forth in an upper passage, to a lower passage can be restricted to successfully prevent increasing of difference of ink density.

An ink jet head cartridge includes a recording head for ejecting ink; an ink container for containing the ink to be supplied to the recording head; an ink supply port for supplying the ink from the container to the head; a porous ink absorbing material disposed in the container and having a ring shape with a central opening; and an engaging portion engaging with the central opening wherein the absorbing material has a higher density proximate to the supply port than proximate to the engaging portion.

Ink container with ring-shaped ink absorbing member

To rinse a cleaning member, a rinsing liquid is discharged from a nozzle onto the cleaning member to wipe the discharging port surface of the liquid discharging apparatus. The foregoing cleaning member is thus maintained in a rinsed condition at all times, thereby obtaining high cleaning performance of the liquid discharging port surface and long-term, stable liquid discharge from the liquid discharging head. A liquid suction force is also created in the cleaning member to draw the viscous ink from the nozzles when the liquid discharging port surface of the liquid discharging head is wiped, thereby further enhancing the cleaning performance.

Liquid discharging apparatus and printing method using such an apparatus

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Kawasaki, Japan

Tokihide Ebata