Canon Kabushiki Kaisha

Ricoh Company, Ltd.

Elpida Memory, Inc.

Cabot Corporation

Masashi Ogasawara

Katsuhiko Takahashi

Mikio Sanada

Yutaka Kurabayashi

Atsushi Miyamoto

Shigeru Nakamura

Takeshi Homma

Shinichi Sato

Yoshihisa Takizawa

Shinichi Hakamada

Takashi Saito

Masayuki Ikegami

Shinya Mishina

Shinichi Tochihara

Sadayuki Sugama

Koromo Shirota

Kenichiro Morita

Yasuo Kotaki

Hiroyuki Ishinaga

Toshio Kashino

Akira Nagashima

Jiro Moriyama

Takashi Imai

Shoji Koike

Atsushi Takahashi

Ryoji Inoue

Tetsuya Ohashi

Makoto Shioya

Koichi Kubo

Tomonari Watanabe

Yui Tokuda

Hiroshi Hinohara

Yuichi Kawasaki

Tetsu Iwata

Souichi Nagai

Fumiaki Fujioka

Masashi Tsujimura

Keigo Gouda

Akiko Yasuda

Yui Kitamura

Yoichi Takada

Hideki Shiro

Shuichi Okazaki

Eriko Ono

Yoshifumi Hattori

Hiroshi Tomioka

Yasuhiro Nito

Daiji Okamura

Yoshie Asakawa

Mayumi Yamamoto

Kumiko Mafune

Satoshi Kudo

Junichi Sakai

Kouhei Nakagawa

Kousuke Yamasaki

Shin-ichi Sato

Yoshio Nakajima

Yoshihiro Ogura

Tomoyuki Tenkawa

Kenichi Shiiba

Kazunobu Takahashi

Shin-ichi Hakamada

Yojiro Kojima

Fumihiko Mukae

Soichi Nagai

Shuichiro Tanimoto

A communication management system manages a session in which a plurality of terminal apparatuses shares a stroke image. The communication management system includes circuitry configured to: manage stroke information including a plurality of pieces of stroke data representing the stroke image; receive, from a first terminal apparatus, group operation information for designating one or more pieces of stroke data, which are operation targets, from among the plurality of pieces of stroke data; and restrict, based on the group operation information, an operation regarding the one or more pieces of stroke data by a second terminal apparatus, which is different from the first terminal apparatus.

Communication management system, communication system, communication management device, image processing method, and non-transitory computer-readable medium

A communication management apparatus includes a memory and circuitry. The memory stores a hierarchical data structure in which each page of a plurality of pages forming a display screen shared by a plurality of communication terminals is associated with one or more objects included in the each page. The circuitry receives, from one communication terminal of the plurality of communication terminals, an operation request that requests an operation on a particular object of the one or more objects. When editing of the particular object and editing of data in a lower layer associated with a higher layer of the particular object are both allowed, the circuitry transmits a success notification to the one communication terminal to notify success of the operation on the particular object.

Communication management apparatus, communication system, communication method, and non-transitory recording medium

A communication terminal includes circuitry to: transmit a participation request for requesting participation in a remote conference being conducted between one or more other communication terminals, to a communication management apparatus that manages data being shared between the other communication terminals; receive screen data of a display screen being currently displayed at the other communication terminals from the communication management apparatus, the screen data of the display screen being one of a plurality of items of screen data generated at at least one of the other communication terminals in the remote conference; and control a display to display the display screen based on the screen data that is received.

Communication terminal, communication system, method of sharing data, and recording medium

A communication terminal comprising circuitry to: receive selection of screen data, from among one or more items of screen data, as sharing target data to be shared with other communication terminal, each screen data to be used for generating a display screen and having been generated at the communication terminal; and share the sharing target data with the other communication terminal.

Communication terminal, communication system, and method of sharing data

A screen sharing system is configured to perform screen sharing between a first information processing apparatus and a second information processing apparatus. The first information processing apparatus is configured to acquire, as screen-sharing information, an image displayed on the first information processing apparatus, and transmit the screen-sharing information to a first server, when a data amount of the screen-sharing information is below a threshold value, and transmit the screen-sharing information to a second server and transmit, to the first server, storage destination information indicating a storage destination of the screen-sharing information, when the data is greater than or equal to the threshold value. The second information processing is configured to display, on the second information processing apparatus, an image based on the screen-sharing information received from the first server, or received from the second server based on the storage destination information received from the first server.

Screen sharing system, and information processing apparatus

An aqueous ink set for ink jet including a combination of a first ink and a second ink. The first ink includes a self-dispersible pigment to a particle surface of which a functional group that includes a phosphonic acid group is bonded, wherein the redispersion viscosity of the first ink is 5 mPa&#xb7;s or less. The second ink includes an anionic dye, a lithium ion, and a sodium ion, wherein the total concentration of the lithium ion and the sodium ion in the second ink is 0.050 mol/L or more, and the proportion of the concentration of the lithium ion in the total concentration of the lithium ion and the sodium ion in the second ink is 45% or more to 85% or less.

Aqueous ink set, ink jet recording method and ink jet recording apparatus

An ink jet recording method for recording an image onto a recording medium by ejecting an aqueous ink containing a resin from an ejection orifice through use of an ink jet recording apparatus including a recording head having a water-repellent face subjected to water-repellent treatment as an ejection orifice face provided with an ejection orifice; a wiping unit configured to wipe the water-repellent face; and a heating unit configured to heat the water-repellent face, the ink jet recording method including a heating step of wiping the water-repellent face with the wiping unit after heating the water-repellent face with the heating unit and continuously heating the water-repellent face until after the wiping of the water-repellent face.

Ink jet recording method and ink jet recording apparatus

The present invention provides an ink that can achieve image characteristics for recording an image having excellent optical density, bleeding resistance, and white blur resistance and also can achieve reliability that provides excellent sticking resistance to a recording head. The ink is one for ink jet containing a first pigment and second pigment. The first pigment is a self-dispersible pigment to a surface of a particle of which a first functional group containing a phosphonic acid group is bonded. The second pigment is a self-dispersible pigment to a surface of a particle of which a second functional group not containing a phosphonic acid group but containing an anionic group other than the phosphonic acid group, and further containing another atomic group is bonded. The introduced amount of the functional group of the second pigment is 0.25 mmol/g or more.

Ink, ink cartridge, and ink jet recording method

A water-based ink of the present invention includes water, a plurality of different water-soluble organic solvents, and a water-insoluble coloring material, wherein the above water-soluble organic solvents consist of a good solvent to the above water-insoluble coloring material and a poor solvent to the above water-insoluble coloring material, and the total amount (% by mass) of the good solvents in the ink is represented by A and the total amount (% by mass) of the poor solvent in the ink is represented by B, the ratio of A to B ranges from 10:5 to 10:30 both inclusive, and when the respective Ka values of the above water-soluble organic solvents are determined by the Bristow method and compared with each other, a water-soluble organic solvent having the largest Ka value is the poor solvent. The pigment ink has a sufficiently large area factor even with a small amount of ink and provides an image of high OD.

Water-based ink, ink jet recording method, ink cartridge, recording unit, ink jet recording apparatus, and image forming method

An ink containing a first coloring material and a second coloring material, the sum total of these contents being 6.0% by mass or less. The first coloring material is a black coloring material exhibiting a difference &#x394;&#x3bb;of 20.0 or more between a maximum absorption wavelength in a 20.0% by mass aqueous solution of 1,2-hexanediol and a maximum absorption wavelength in water, the second coloring material is a specific coloring material exhibiting a difference &#x394;&#x3bb;of 12.0 or less between a maximum absorption wavelength in a 20.0% by mass aqueous solution of 1,2-hexanediol and a maximum absorption wavelength in water, and the sum of the &#x394;&#x3bb;and the &#x394;&#x3bb;is 35.0 or less.

Ink, ink cartridge and ink jet recording method

The invention provides provide an ink jet ink exhibiting such an excellent ejection property that when an ink containing a polymer capable of improving the scratch resistance of a recorded article is used, the deviation of the ink-droplet impact point on a recording medium is prevented. The ink jet ink contains a polymer and a surfactant, wherein the acid value of the polymer is from 100 mg KOH/g or more to 220 mg KOH/g or less, the weight-average molecular weight of the polymer is from 3,000 or more to 10,000 or less, and the surfactant has a structure represented by the following formula () wherein n is a numerical value of from 3 or more to 27 or less, and m is a numerical value of from 16 or more to 31 or less.

Ink jet ink, ink jet recording method, ink cartridge, recording unit and ink jet recording apparatus

The invention provides an ink containing a coloring material and a water-soluble organic solvent, wherein the coloring material is a compound represented by the following general formula (1), and the water-soluble organic solvent includes an alkanediol having 4 to 6 carbon atoms: wherein rings A, B, C and D each indicated by a broken line are, independently of one another, a benzene ring or a nitrogen-containing heteroaromatic ring, the number of the nitrogen-containing heteroaromatic ring is more than 0.0 and 3.0 or less, the remainder is the benzene ring, Ris an alkyl group, Ris an alkylene group, X is an anilino group having one or more sulfonic groups, m is more than 0.0 and less than 3.9, n is 0.1 or more and less than 4.0, and the sum of m and n is 1.0 or more and less than 4.0.

Provided is an ink for ink jet including a first pigment and a second pigment. Each of the first pigment and the second pigment comprises a self-dispersible carbon black in which a functional group containing two phosphonic acid groups is bonded to a particle surface. The average particle size of the first pigment is smaller than the average particle size of the second pigment. The introduced amount of the functional group of the first pigment is higher than the introduced amount of the functional group of the second pigment.

The present invention provides an ink jet ink that is capable of recording an image excellent in light resistance and ozone resistance and has excellent intermittent ejection stability. The ink jet ink contains a coloring material and a water-soluble organic solvent. The coloring material contains a compound represented by the following general formula (I), the water-soluble organic solvent contains ethylene urea end an alkanediol having 4 to 6 carbon atoms, and a content A (% by mass) of the coloring material, a content B (% by mass) of the ethylene urea and a content C (% by mass) of the alkanediol having 4 to 6 carbon atoms based on a total mass of the ink satisfy relationships of 0.20&#x2266;B/A&#x2266;10.0 and 0.10&#x2266;C/A&#x2266;10.0. 

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Tokyo, Japan

Masashi Ogasawara