Fuji Xerox Co., Ltd.

Fuji Xerox Corporation

Daisuke Yoshino

Takako Kobayashi

Akira Imai

Yoshihiro Inaba

Koji Horiba

Masahiro Oki

Hiroyuki Moriya

Toshiyuki Miyata

Ryosaku Igarashi

Masahiro Takahashi

Takahiro Ishizuka

Chikara Ando

Hiroshi Makino

Tomoharu Nonaka

Motofumi Baba

Yasuhiro Uehara

Shinji Sasahara

Yasushi Kawahata

Yoshitake Ogura

Teiji Sata

Yumiko Kurosawa

Satoshi Tatsuura

Kazuyoshi Itoh

Tetsuya Kimura

Keitaro Mori

Yutaka Nogami

Yasutaka Naito

Junpei Amano

Hideaki Ohhara

Yuka Nakayama

A liquid developer includes a carrier liquid and a toner including a urethane-modified acrylic resin.

Liquid developer and developer cartridge

A liquid developer includes a carrier liquid and a toner particle whose surface is treated by a polyamine, wherein an amount of sodium ion to be eluted in 1 g of the toner particles is 0.04 mg or less.

Liquid developer, developer cartridge, and image forming apparatus

A liquid developer contains a carrier liquid and a toner particle which contains a binder resin, wherein the toner particles have a content of aluminum measured by fluorescent X-ray analysis in a range of from 0.04% by weight to 0.1% by weight of total elements.

A positively chargeable toner includes at least a binder resin, and toner particles of which surfaces are modified by a polyvinylamine compound.

Positively chargeable toner, liquid developer, developer, developer cartridge, process cartridge, and image forming method

A liquid developer includes a carrier liquid, and a toner particle which contains a resin having an unsaturated double bond, a compound represented by the formula (I) and a photopolymerization initiator and whose surface is treated by a polyamine, wherein m and n each independently represent an integer of 1 to 10,000; m+n represents an integer of 10 to 10,000; and R, R, and Reach independently represent a single bond or a divalent aliphatic hydrocarbon group having 1 to 12 carbon atoms.

An electrostatic charge image developing toner includes a toner particle that contains a binder resin and is surface-modified by a polymer obtained by polymerizing a monomer containing dicyandiamide and diethylenetriamine, wherein toner particles have positive charging properties.

Electrostatic charge image developing toner, liquid developer, and toner cartridge

An image forming apparatus includes an electrostatic latent image holding member, a charging device, a latent image forming device, a developing device that stores a liquid developer containing a toner and a non-volatile carrier liquid, and develops the electrostatic latent image formed on the surface of the electrostatic latent image holding member by the liquid developer to form a toner image, a transfer device that transfers the toner image onto a surface of an impermeable recording medium, and a fixing device, wherein when the SP value of the toner is set as SP(t), the SP value of the non-volatile carrier liquid is set as SP(c), and the SP value of the recording medium is set as SP(m), an absolute value of a difference between SP(t) and SP(c) is from 1.5 to 7.0 and the following relational expression (A) is satisfied:|()&#x2212;()|&#x3e;|()&#x2212;()|.&#x2003;&#x2003;Relational expression (A)

Image forming apparatus using a developer with a solubility parameter

A liquid developer includes a carrier liquid having silicone oil, and toner particles including a polyester resin and having a value of ammonium ions contained therein measured by underwater extraction in a range of 0.005 ppm to 1 ppm.

Liquid developer, particles for liquid developer, and liquid developer accommodation container

An image forming method includes forming an unfixed toner image on a recording medium using a toner that contains a carboxyl group-containing resin having a carboxyl group and an oxazoline group-containing resin having an oxazoline group, fixing the unfixed toner image to the recording medium to form a fixed toner image, and performing a heat treatment on the fixed toner image at a temperature higher than or equal to a fixing temperature.

Image forming method

A toner includes a crystalline polyester resin having an unsaturated double bond, a thiol compound having a bi- or more-functional thiol group, and a photopolymerization initiator.

Toner, liquid developer, dry developer, developer cartridge, process cartridge, image forming apparatus, and image forming method

A liquid developer contains a carrier liquid, and toner particles containing a binder resin and a pigment surface-treated with a polyallylamine compound as a colorant.

Liquid developer, developer cartridge, process cartridge, image forming apparatus, and image forming method

A liquid developer includes: a carrier liquid; and toner particles that are dispersed in the carrier liquid and that includes a styrene-based thermoplastic elastomer, a styrene-based thermoplastic resin, and a quaternary ammonium base-containing polymer having a constituent unit expressed by Chemical Formula I: wherein Rrepresents hydrogen or an alkyl group with a carbon number equal to or less than 3, Rrepresents an alkylene group with a carbon number equal to or less than 18, Rto Rrepresent an alkyl group or an aralkyl group with a carbon number equal to or less than 18, X represents &#x2014;COO&#x2014; or &#x2014;CONH&#x2014;, and Yrepresents a halogen ion or an anion having a &#x2014;COO&#x2014; group or a &#x2014;SO&#x2014; group in the structure thereof.

The present invention provides a liquid developer including an insulating carrier liquid and toner particles containing a binder resin, the binder resin including a styrene-based thermoplastic elastomer and a styrene thermoplastic resin, and the toner particles being dispersed in the insulating carrier liquid.

Liquid developer, process cartridge, image forming apparatus, and image forming method

A toner includes a resin having an unsaturated double bond, a thiol compound having a bi- or more-functional thiol group, and a polymerization initiator.

A liquid developer includes: a carrier liquid and toner particles dispersed in the carrier liquid, including a binder resin which contains a thermoplastic resin having repeating units derived from a monomer having a styrene skeleton and repeating units derived from a monomer having an acrylic ester structure, and a thermoplastic elastomer resin that is a block copolymer, the block copolymer having a first block portion including repeating units derived from a monomer having a styrene skeleton, a second block portion including repeating units derived from an alkene having 2 to 6 carbon atoms, and a third block portion including repeating units derived from a monomer having a styrene skeleton and these block portions being bonded in this order.

Growing community of inventors

Kanagawa, Japan

Daisuke Yoshino