Canon Kabushiki Kaisha

Matsushita Electric Industrial Co., Ltd.

Fujinon Corporation

Osamu Iwasaki

Naoji Otsuka

Kiichiro Takahashi

Hitoshi Nishikori

Kentaro Yano

Minoru Teshigawara

Daigoro Kanematsu

Yoshinori Nakagawa

Atsushi Arai

Toshiyuki Chikuma

Atsuhiko Masuyama

Satoshi Seki

Naomi Oshio

Hidehiko Kanda

Hitoshi Sugimoto

Naoji Ohtsuka

Takeshi Yazawa

Tetsuya Edamura

Toshiharu Inui

Nobuyuki Kuwabara

Satoshi Masuda

Hisao Yaegashi

Isao Ebisawa

Jiro Moriyama

Norihiro Kawatoko

Daisaku Komiya

Tsutomu Uenoyama

Hiromitsu Hirabayashi

Noribumi Koitabashi

Fumiko Suzuki

Hiroshi Tajika

Shigeyasu Nagoshi

Tomoki Yamamuro

Kaneji Yamada

Toshio Kashino

Miyuki Matsubara

Minoru Etoh

Yoshie Asakawa

Hideyuki Yano

Junji Araya

Kazuhiro Nakata

Masaya Uetuki

Tadashi Furuya

Masanori Takenouchi

Ryoji Inoue

Yuji Akiyama

Masaya Uetsuki

Tetsuo Suzuki

Takayuki Tanaka

Katsuhiro Sakaizawa

Kazunari Hagiwara

Takahiro Kawamoto

Yoshikuni Ito

Kiyomi Aono

Takeshi Fujino

Satoshi Tsuruya

Nobuhiro Kitabatake

Keisei Hakamata

Kenji Karashima

Yasuhiro Horiguchi

Masao Kato

Yoshiyuki Imanaka

Ichiro Saito

Atsushi Takahashi

Toshihiko Ujita

Mitsuhiro Ono

Hiroyuki Saito

Yuji Hamasaki

Takashi Nojima

Yasushi Sato

Haruyuki Yanagi

Soichi Hiramatsu

Atsushi Sakamoto

Mamoru Sakaki

Fumihiro Gotoh

Hiroshi Yamada

Hitoshi Tsuboi

Atsushi Ando

Kosuke Yamamoto

Hideaki Kawakami

Tsuneki Inuzuka

Masashi Hayashi

Hiroyuki Kinoshita

Hiroaki Yoshio

Shinya Matsui

Yukihiro Ohzeki

Shin Ishimatsu

Masahiro Taniguro

Tetsuya Saito

Takashi Kasahara

Kei Kosaka

Fumiko Yano

Satoshi Saikawa

Takahiro Matsuura

Yukihiro Ozeki

Yoji Ara

Kazunori Yamada

Takuji Katsu

Tomoyuki Tenkawa

A printing apparatus includes a conveyance unit configured to convey a print medium, a printhead for printing an image by discharging ink to the conveyed print medium, a heating unit provided on a downstream side of the printhead with respect to a conveyance direction of the print medium and configured to heat the print medium, and a ventilation unit provided on a downstream side of the heating unit with respect to the conveyance direction and configured to ventilate air in a peripheral space of a conveyance path of the print medium. The printing apparatus controls to delay a start of printing by the printhead so that the print medium dried by the heating unit passes through the conveyance path in a state in which a humidity in the space becomes lower than a predetermined value due to the ventilation.

Printing apparatus and control method therefor

There is provided an inkjet printing apparatus that can execute a recovery process appropriate for a print head according to a use condition of the inkjet printing apparatus. Therefore a recovery operation is performed based upon both an elapsed time in a non-use state where the printing is not performed and an elapsed time from the previous recovery process.

Inkjet printing apparatus and recovery method of print head

The present invention relates to an image forming apparatus that forms an image by consecutively superposing toner images that have been formed on a plurality of photosensitive drums, on an intermediate transfer member or a transfer medium. The image forming apparatus is made compact and operates at a low cost. Since a current supply member supplies a current in a rotational direction of an intermediate transfer belt, multiple first transfer portions do not need corresponding voltage sources. Even in the case where a charging member supplies a current, the potential of the intermediate transfer belt is maintained at a predetermined potential by a constant-voltage element connected to support rollers.

Image forming apparatus

A printing apparatus, comprising a driving unit for driving a printhead including a plurality of nozzles each of which prints a dot, a conveying unit for conveying a printing medium, a memory and a unit, wherein the plurality of nozzles are arranged to form nozzle arrays adjacent to each other, the unit performs a first operation for developing printing data column by column on the memory, a second operation for assigning the printing data to each nozzle array, and a third operation for controlling the driving unit based on the assigned printing data, and, after the first operation and before the second operation, the unit specifies a portion of the printing data corresponding to a dot deviated from a correct printing region due to a tilt of the nozzle arrays and rearranges the portion.

Printing apparatus and method of processing printing data

A printing apparatus including a print head including nozzle groups each having nozzles, each of the nozzle groups applying ink having a plurality of volumes from the nozzles to form dots including dots differing in size, including: an arrangement determination unit to determine an arrangement of dots to be formed by each of the nozzle groups; a size determination unit to determine sizes of ink ejected to print the dots determined by the arrangement determination unit, according to respective ejection characteristics of the nozzle groups, such that a print characteristic of an image based on the dot arrangement determined by the arrangement determination unit is within a predetermined range; and an ejection control unit to control the print head to eject ink having the plurality of sizes determined by the size determination unit in positions of a print medium based on the arrangement determined by the arrangement determination unit.

Printing apparatus and printing method

Adequate correction processing is performed on image data based on the degree of ink concentration that occurs even. An image processing apparatus having: acquisition unit for acquiring multi-value image data and a first parameter related to the degree of concentration of ink; first generation unit for generating corrected data by correcting the multi-value data that is to be printed for the first pixel based on the multi-value data that is to printed in the first pixel and a first parameter; and second generation unit for generating the first parameter and a second parameter that indicates the degree of ink concentration of the plurality of nozzles when printing a second pixel that is printed by the nozzles next to the first pixel.

Image processing apparatus and image processing method

Provided are an inkjet printing apparatus and inkjet printing method that can, regardless of an ejection frequency of a print head, stabilize density of an image expressed on a print medium. For this purpose, an ink concentration integrated value is obtained according to the ejection history of each nozzle so as to be increased by data indicating non-ejection of the nozzle or decreased by data indicating ejection. Then, image data on the target pixel is corrected such that density of the target pixel is further reduced as the pixel is subjected to printing by a nozzle having a higher ink concentration integrated value.

Image processing method and image processor

In a printing apparatus improvement of drying ability and reduction of consumed power are concurrently achieved by improving the efficiency of drying ink. More concretely, hot air is blown onto a print medium printed by ink, and a portion of the blown hot air is recovered and blown again. Before the hot air is blown, the print medium is heated by a preheating unit, making it higher than the dew point temperature of the blown hot air.

Printing apparatus and inkjet method

The purpose is to provide a high quality halftone recording with a reduced grainy feeling without lowering the true resolving power. Provided is an apparatus for making a halftone recording by employing three or more types of color materials, each of which has at least one grade of concentration, wherein each type of the color materials having the lowest concentration provides, when recording on a recording medium having a first lightness, a recorded region having its own lightness, and wherein a difference between the first lightness and the lightness of the recorded region is not more than 35, the lightness being measured according to the definition of CIE 1976 psychological measurement lightness using a standard illuminating light D65 as a light source.

Apparatus for making a halftone recording and process for making a halftone recording using the same, as well as ink tank and head cartridge fit for halftone recording and ink-jet recording apparatus using the same

A printing device using a print head ejecting ink from a plurality of nozzles to print ink dots of a plurality of dot diameters, includes a print-characteristic acquisition unit obtaining print characteristic information on dot diameters of ink dots to be printed per each predetermined portion of the plurality of nozzles, a distribution ratio determination unit determining a distribution ratio for distributing image data to the predetermined portions of the plurality of nozzles based on the information, a dot print position determination unit quantizing the image data to determine a dot print position based on the image data and sizes and an array of thresholds; and a plurality of masks based on dot distribution order determined according to the distribution ratio, distributing printing of each of the ink dots of the plurality of dot diameters to the dot print position determined by the dot print position determination unit.

Printing device and printing method

An object of the present invention is to provide a liquid applying apparatus which can inhibit a variation in application amount associated with the individual variability of a component of the apparatus. According to the present invention, a liquid holding space in which a liquid is held is formed between the applying member and the liquid holding member. When the applying member moves, the liquid attached to the applying member is fed out of the liquid holding space together with the applying member. The liquid is applied to a medium. The application amount of liquid applied to the applying medium varies depending on the individual variability of a component such as a liquid applying member. The variation in liquid application amount is adjusted by adjusting section for adjusting, the rotation speed of the liquid holding member or the flow speed of the liquid flowing through the liquid holding space.

Liquid applying apparatus and ink jet printing apparatus

An ink jet printing apparatus comprises a distributing unit configured to distribute print data for printing dot into data used for printing by first printing elements provided in a print head and data used for printing by second printing elements provided in the same print head, and a determining unit configured to, for the data used for printing by the respective parts of the printing element arrays of each of first and second print heads which have the overlapped print regions, determine a ratio between amount of the data used for printing by a combination of the first and second printing element arrays in the first print head and a combination of the first and second printing element arrays in the second print head.

Inkjet printing apparatus and print data generating method

The present invention provides a liquid application device and an ink jet recording apparatus each capable of reducing deterioration in application quality due to an increase in the number of times of use of a roller, thereby improving durability. The present invention includes an application roller which applies liquid to an application medium, and a liquid retention member which retains the liquid in a liquid retention space formed by making the application roller be in contact with the retention member. With this structure, a pool of the liquid is formed, with rotation of the application roller, in an area upstream of a contact area, in a rotational direction, between the application member and the retention member at a side where a surface of the application member enters the contact area therebetween.

Liquid application device and ink jet recording apparatus

An apparatus includes a sheet feeding unit configured to feed sheets one by one from a storing unit, a coating unit configured to apply a coating liquid on a fed sheet, and a printing unit configured to perform printing on the coated sheet. The control unit controls timing to start a sheet feeding of a next page while a current page is being printed, depending on occurrence of event of temporary interruption or delay of printing operation.

Printing apparatus and control method of printing apparatus

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Tokyo, Japan

Osamu Iwasaki