Ricoh Company, Ltd.

Amika Sagara

Michihiko Namba

Kiminori Masuda

Hiroaki Takahashi

Akihiko Matsuyama

Hidetoshi Fujii

Yoshiki Yanagawa

Yuuki Yokohama

Masaki Kudo

Kazuhiko Umemura

Yuusuke Koizuka

Hirokazu Ikenoue

Mayumi Yoshihara

Tomoyuki Shimada

Kazukiyo Nagai

Satoshi Kojima

Hiroshi Gotou

Shigeyuki Harada

Akiyoshi Sabu

Masayuki Koyano

Hiroki Hagiwara

Masayuki Fukuoka

Hideaki Nishimura

Takuya Yamazaki

Mio Kumai

Yoshiaki Hoshino

Azumi Miyaake

Koichiro Oyama

Ayano Momose

Satomi Araki

Yukihiro Imanaga

Osamu Takehira

Kento Sugita

Kaori Miyahara

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

A drying device includes one or more first heating bodies configured to heat a drying target object conveyed with liquid applied on the drying target object, and a second heating body configured to heat the drying target object after the drying target object is heated by the one or more first heating bodies. The one or more first heating bodies include at least one heating body configured to heat the drying target object at a heating temperature greater than a heating temperature of the second heating body.

Drying device and printer incorporating the drying device

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

A drying device includes a drier, a gas circulator, and a concentration adjuster. The drier warms a liquid composition on a drying target object. The gas circulator circulates a gas containing a volatile component of an organic solvent warmed and volatilized by the drier to reuse the gas for drying. The concentration adjuster adjusts a concentration of the volatile component reused.

Drying device, liquid discharge apparatus, and drying method

An ink is provided. The ink includes a colorant, an organic solvent, a resin particle including an anionic urethane resin, and an organic amine compound having a boiling point in the range of from 120&#xb0; C. to 200&#xb0; C. and a molecular weight of 100 or less, and water, and the mass ratio of the organic amine compound to the resin particle is in the range of from 0.01 to 1.00.

Ink, image forming method, image forming apparatus, and image formed product

An ink includes water, a coloring material, an organic solvent having a solubility parameter of from 8.0 to 13.0, an urethane resin particle and a metal ion, wherein the organic solvent having the solubility parameter of from 8.0 to 13.0 has a proportion of from 10.0% by mass to 30.0% by mass to the ink, where the metal ion is at least one selected from an alkali metal ion and an alkaline earth metal ion, where the metal ion has a proportion of from 4000 mg/L to 8000 mg/L to the ink.

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

An ink set includes an ink A including water, an organic solvent A, a self-dispersible pigment, an anionic resin particle, and an amine compound having a boiling point of 120 degrees C.-200 degrees C. and an ink B including water, an organic solvent B, and a resin-coated pigment, wherein when the mass content of the amine compound is determined as 1, the mass content of the anionic resin particle is 1-100 and the mass content of the resin-coated pigment is 10-200, while the mass content of the anionic resin particle and the mass content of the resin-coated pigment are respectively based on the content per unit of mass of the ink A and the content per unit of mass of the ink B.

Ink set, image forming method, and image forming apparatus

An ink including an organic solvent, a pigment, a polyurethane particle, and water is provided. The organic solvent includes at least one of 3-methoxy-1-butanol and 3-methoxy-1-propanol. The polyurethane particle has a particle diameter D50 of 50 nm or less.

Ink, ink container, and inkjet recording apparatus

An ink includes a pigment, a wax, a water soluble solvent including a solvent having an SP value of from 9.0 to 11.0, and water, wherein the mass ratio of the content of the wax in the ink to the content of the solvent having an SP value of from 9.0 to 11.0 is in a range of from 1.0:2.5 to 1.0:25.0.

Ink, ink container, inkjet recording device, and recorded matter

Provided is an ink including: a coloring material; an organic solvent; resin particles; an amine compound; and water, wherein the resin particles include urethane resin particles, and urethane-modified acrylic resin particles including a core portion containing an acrylic resin and a shell portion formed on a surface of the core portion and containing at least a urethane resin, and wherein the amine compound has a boiling point of 120 degrees C. or higher but 200 degrees C. or lower and a molecular weight of 100 or less.

Ink, ink stored container, image forming method, liquid discharging apparatus, and image

An inkjet recording method includes applying one or more drive pulses to a pressure generating device of a recording head including a nozzle plate, a liquid chamber, and discharging droplets of ink from the nozzle. Also, the following conditions 1 and 2 are satisfied. 1. The ink has a dynamic surface tension 10 mN/m or more greater than the static surface tension of the ink when the surface life length is 15 ms and 3 mN/m or more greater than the static surface tension of the ink when the surface life length is 1,500 ms, as measured by maximum bubble pressure technique at 25 degrees C. 2. At least one of the drive pulses has a voltage changing portion to draw in the ink, the voltage changing portion having a changing time of one third or more of the resonance period of the liquid chamber.

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Tokyo, Japan

Amika Sagara