Minolta Company, Ltd.

Konica Minolta, Inc.

Konica-Minolta Holdings, Inc.

Takeshi Arai

Masayuki Hagi

Junichi Tamaoki

Megumi Aoki

Yoshitaka Sekiguchi

Hiroyuki Fukuda

Kenichi Kido

Yoshihiro Mikuriya

Tetsuo Sano

Katsunori Kurose

Masahiro Anno

Chikara Tsutsui

Ichiro Demizu

Minoru Nakamura

Masahide Inoue

Masafumi Uchida

Takao Yamanouchi

Masaaki Kondo

Katsumi Tashiro

Yoshikazu Nishihara

Kiyotaka Naito

Toru Toda

Miyoko Goto

Yoko Osawa

A toner filling apparatus includes a filling tank, a toner filling path forming member, a toner fluidizing unit, a filling path opening/closing unit and a container room sucking unit. The toner filling path forming member is in communication with the filling tank and forms a toner filling path connected to the toner container. The container room sucking unit sucks air from the toner container through a filter member which is impermeable to the toner but permeable to air. When the toner fluidizing unit fluidizes the toner in the filling tank and the filling path opening/closing unit opens the toner filling path so as to load the toner to the toner container, the container room sucking unit reduces a pressure in the toner container to a negative pressure so as to draw in the toner into the toner container.

Toner filling apparatus

A toner used for an image forming method comprises steps of: limiting an amount of toner on a surface of a toner carrier by allowing a toner layer limiting member to be pressed to the surface of the toner carrier; and developing an electrostatic latent image formed on an electrostatic latent image carrier using the toner carried and transferred by the toner carrier, based on a non-magnetic single component development system, wherein the toner comprises toner particles having a volume average particle diameter of 3 to 9 &#x3bc;m, an arithmetic mean value of shape factor of 1.1 to 1.5, a coefficient of variation of shape factor of 16% or less, a ratio of rounded toner particle of 50% by number or more and a coefficient of variation of number particle diameter distribution of 26% or less, and a conveyance index of 2.0 to 10.0.

Toner and image forming method

The present invention relates to a toner for developing an electrostatic latent image comprising a binder resin, a colorant, a first wax, and a second wax whose kind is different from that of the first wax, wherein the toner is prepared by a kneading-grinding method and integrated domains of the first wax and the second wax are dispersed in the binder resin.

Toner for developing electrostatic latent image

The present invention relates to toners for full color image-forming machine with specific external additives (kind, BET specific surface area etc.) added externally in combination to toner particles prepared by a wet granulation method, and a fixing method suitable for the toner.

Toner containing specific external additive for full color-copying machine and fixing method of the same

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

Developer for developing electrostatic latent images

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 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

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Akashi, Japan

Takeshi Arai