Ricoh Company, Ltd.

Yuuki Yokohama

Hiroshi Gotou

Akihiko Matsuyama

Hidetoshi Fujii

Kiyofumi Nagai

Masayuki Fukuoka

Hiromi Sakaguchi

Kaori Toyama

Akihiko Gotoh

Ichiroh Fujii

Masaki Kudo

Keita Katoh

Mariko Kojima

Amika Sagara

Koichiro Oyama

Yukiko Takamura

Kento Sugita

Satoshi Takahashi

Hiroshi Goto

Michihiko Namba

Keishi Taniguchi

Kazuhiko Umemura

Yuusuke Koizuka

Hisashi Habashi

Hideaki Nishimura

Shigeo Hatada

Shigeru Kusakata

Mayumi Yoshihara

Tomohiro Nakagawa

Takashi Watanabe

Shun Saito

Tomohiro Inoue

Akiko Bannai

Tsutomu Maekawa

Mizuki Kuroha

Koji Katsuragi

Takashi Tamai

Shuusuke Someno

Azumi Miyaake

Yukihiro Imanaga

Sayuri Kojima

Masaki Kudoh

Yuichi Tanioku

Hidetoschi Fujii

A liquid composition contains a macrocyclic compound enclosing a metal ion, water, and an organic solvent, wherein a recording medium where the liquid composition has been applied has at least one of an antibacterial activity or an antiviral activity.

Liquid composition, method of applying liquid, device for applying liquid, pre-processing fluid, and set of pre-processing fluid and ink

An ink including a pigment, water, and a resin is provided. An image formed with the ink on a print medium has a tack force of 6 gf or greater but 13 gf or less when measured at a probe temperature of 100 degrees C., where the image is a solid image formed at a resolution of 1,200 dpi, subsequently irradiated with light of 395 nm for 0.6 seconds, and left to stand at normal temperatures and normal humidities for 30 seconds.

Ink, image forming apparatus, and image forming method

An ink set includes an ink A including water, a first organic solvent, and a first pigment and an ink B including water, a second organic solvent, a second pigment, and a urethane resin particle. The first organic solvent includes at least one of N,N-dimethyl-&#x3b2;-buthoxy propionamide, N,N-dimethyl-&#x3b2;-methoxy propionamide, and 3-ethyl-3-hydroxymethyl oxetane and has a mixing solubility parameter A of 10.00 to less than 13.00 and the second organic solvent has a mixing solubility parameter B of 13.00 to 16.00.

Ink set, recording device, and method of recording

An ink includes at least one polyether-modified siloxane compound, and at least one aliphatic alcohol alkylene oxide compound. The mass ratio of the polyether-modified siloxane compound to the aliphatic alcohol alkylene oxide compound in the ink is from 95/5 to 50/50.

Ink, ink set, ink container, image forming method, image forming apparatus and recorded matter

Provided is a liquid discharging apparatus including a liquid discharging unit configured to discharge a liquid, and a dummy discharge receptacle including an absorbing member configured to absorb a liquid dummy-discharged by the liquid discharging unit, wherein the liquid discharging unit discharges a liquid having a resin content of 5% by mass or greater, and wherein the absorbing member of the dummy discharge receptacle is formed of melamine foam.

Liquid discharging apparatus

An ink comprises a pigment, a quinacridone derivative represented by the following Chemical formula 1. 

Ink, ink container, inkjet recording device, and recording method

An ink and cleaning liquid set includes an ink comprising a coloring material and a resin and a cleaning liquid comprising water and at least one type of organic solvent, wherein the ink in a dried form has a glass transition temperature of from 40 to 90 degrees C. and the swelling ratio calculated from a mass of a film of the ink in a dried form before and after immersion in the cleaning liquid is 10 percent or greater according to the following relationship 1: swelling ratio (percent)=100&#xd7;[(B&#x2212;A)/A] Relationship 1, where A represents the mass of the film before the immersion and B represents the mass of the film after the immersion.

Ink and cleaning liquid set, inkjet printing device, inkjet printing method, and method of cleaning nozzle surface of inkjet discharging head

An image forming method includes applying an ink for the first time to a recording medium to form an image and rolling up the recording medium in a roll form, wherein the recording medium is continuous paper, the ink includes an organic solvent and a coloring material, and the image recorded matter has a tackiness power of from 80 to 110 nN.

Ink, inkjet recording method, ink cartridge, and image recording device

An image forming method includes applying an ink for the first time to a recording medium to form an image and rolling up the recording medium in a roll form, wherein the recording medium is continuous paper, the ink includes water, an organic solvent, and a coloring material, and the image has a tackiness power of from 80 to 110 nN.

Provided is an ink containing a wax, a plurality of organic solvents, and water, wherein the plurality of organic solvents include a compound having a solubility parameter of 9 or greater but 11 or less and a compound having a saturated vapor pressure at 100&#xb0; C. of 20 mmHg or greater but 400 mmHg or less.

Ink, ink stored container, inkjet recording apparatus, and printed matter

Provided is a set of an ink and a print medium, the set including an ink and a print medium, wherein the ink includes at least one organic solvent, polyurethane resin particles, a colorant, and water, wherein the at least one organic solvent includes a compound having a saturated vapor pressure at 100&#xb0; C. of 65 mmHg or greater but 400 mmHg or less, and wherein a sensor output at a critical image peeling point, measured by a microscratching method, of a solid image formed on the print medium in a manner that the ink is attached in an amount of 0.96 mg/cmis 600 or greater.

Set of ink and print medium, inkjet printing method, inkjet printing apparatus, printed matter, ink, and ink stored container

Ink includes a coloring material, an organic solvent, and water, wherein the ink satisfies the following requisites:

Ink, image forming method, image forming apparatus, and recorded matter

To provide an inkjet ink, which contains: water; a wetting agent; a surfactant; and a colorant, wherein the wetting agent contains at least an amide compound represented by the following structural formula (I): 

Inkjet ink, ink cartridge, inkjet recording method, inkjet recording device, and inkjet recorded matter

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Kanagawa, Japan

Yuuki Yokohama