Minolta Company, Ltd.

Konica Minolta Business Technologies, Inc.

Junichi Tamaoki

Masayuki Hagi

Takeshi Arai

Megumi Aoki

Yoshihiro Mikuriya

Hiroyuki Fukuda

Yoshitaka Sekiguchi

Tetsuo Sano

Kenichi Kido

Masahiro Anno

Katsunori Kurose

Minoru Nakamura

Ichiro Demizu

Chiyoshi Nozaki

Hiroaki Kato

Yoshikazu Nishihara

Miyoko Goto

Yoko Osawa

The present invention relates to a toner, comprising a binder resin, a colorant and two kinds of infrared absorbing agents, and

Non-contact heat fixing color toner and image-forming method

A non-contact heat fixing toner, comprising a binder resin, a colorant, an infrared absorbing agent, a first wax and a second wax, wherein a difference (X-Y) between the maximum peak temperature (X; &#xb0; C.) in the differential thermal curve in the first wax and Tg (Y; &#xb0; C.) of the binder resin is within the range from &#x2212;5 to +10&#xb0; C.

Non-contact heat fixing toner

Negatively chargeable toner and image-forming method

The present invention relates to a full color image forming method for forming a full color image on a recording medium by using specific magenta toner, specific cyan toner, specific yellow toner and black toner, wherein a maximum adhering amount of the magenta toner, the cyan toner and the yellow toner on the recording medium is respectively 5.0 g/m or less.

Full color image forming method

Color toner for developing electrostatic image comprising two kinds of polyesters and two kinds of releasing agents

Color toner for developing electrostatic image, comprising first linear polyester and second non-linear polyester as binder resin

The present invention relates to a toner that contains at least a binder resin and a colorant, characterized in that the toner has a temperature range of 90 to 110&deg; C. at 2&times;10 (Pa) of a storage elastic modulus (G&prime;) under 0.1 (Hz) of a frequency.

Toner used for developing electrostatic latent image

Electrostatic-latent-image developing toner and inorganic particles used for such a toner

The present invention provides a toner for developing an electrostatic latent image which suppresses an adhesion and wearability on a surface of a photosensitive member and exhibits an excellent rising property of an electrification. The toner comprises (i) toner particles containing a binder resin and a colorant, (ii) a first external additive consisting of first inorganic particles whose number-average particle size is 5-40 nm, (iii) a second external additive consisting of second inorganic particles whose number-average particle size, which is larger than that of the first external additive, is 20-160 nm, (iv) a third external additive consisting of third inorganic particles whose number-average particle size, which is larger than that of the second external additive, is 80-1200 nm, and (v) a fourth external additive consisting of a metal salt of fatty acid whose volume-average particle size is 1.5-12 &mgr;m, said four external additives being externally added to the toner particles.

Toner for developing an electrostatic latent image

Toner for an electrostatic latent image development

The present invention relates to a toner comprising toner particles and an external additive comprising strontium titanate particles that have a number-average particle size of 80 to 800 nm and do not have a peak of strontium carbonate in qualitative analysis by X-ray diffraction.

Toner for developing electrostatic latent image

Toner containing specific alkyl carboxylic acid with fine particles externally added

The present invention relates to a toner comprising:

The present invention provides an electrostatic latent developing toner which comprises:

Electrostatic latent image-developing toner containing specified toner

A developer contains a set of color toners and black toner for use in a full color image forming apparatus. Each of the color toners contains a color colorant and a first binder resin, and the black toner contains a black colorant and a second binder resin. The difference between softening point and flow starting temperature of said first binder resin is less than the difference between softening point and flow starting temperature of said second binder resin.

Growing community of inventors

Sakai, Japan

Junichi Tamaoki