Kyocera Document Solutions Inc.

Kyocera Mita Corporation

Hidetoshi Miyamoto

Minoru Wada

Kouji Uno

Eiji Gyoutoku

Masanobu Maeshima

Yoshio Ozawa

Masaki Kadota

Hisashi Mukataka

Katsuki Osanishi

Hideya Muramoto

An electrostatic latent image developing toner includes a plurality of toner particles each including a toner core and a shell layer. The shell layer includes a plurality of first shell particles and a plurality of second shell particles. The first shell particles cover the toner core at a coverage of at least 25% and no greater than 50%. The second shell particles additionally cover the toner cores at a coverage of at least 5% and no greater than 30%. An SP value of the toner core is greater than an SP value of the first shell particles. The SP value of the first shell particles is greater than an SP value of the second shell particles.

Electrostatic latent image developing toner

A liquid developer contains an electrically insulating liquid carrier and toner particles dispersed in the liquid carrier. Each toner particle includes a core and a shell layer that is formed on a surface of the core and contains a thermosetting resin.

Liquid developer and method for manufacturing the same

An electrophotographic toner includes capsule toner particles that each include an anionic toner core having a zeta potential at pH 4 of no greater than &#x2212;5 mV and a cationic shell layer disposed over a surface of the toner core. Each of the capsule toner particles has, at a surface thereof, a sodium concentration of no less than 200 ppm and no greater than 1,000 ppm as measured by an ICP spectrometer.

Electrophotographic toner

A method for producing a toner, includes the steps of: preparing a core having a zeta potential at pH 4 of &#x2212;5 mV or less; and forming a cationic shell layer on a surface of the core in a solution in which a material of the shell layer having miscibility with a solvent of 250% by mass or more and 1000% by mass or less is dissolved in the solvent.

Method for producing toner

In producing an electrostatic latent image developing toner, fine particle aggregates are formed by aggregating fine particles containing a binder resin and fine particles containing a release agent in an aqueous medium in the presence of an aggregating agent containing an alkali metal sulfate, and toner particles are formed by coalescing components contained in the fine particle aggregates in an aqueous medium in the presence of hydroxypropyl methyl cellulose.

Method for producing electrostatic latent image developing toner

A toner containing a binder resin, a release agent, and pigment fine particles is produced by aggregating fine particles containing the components of the toner to obtain fine particle aggregates and then coalescing the fine particle aggregates. The pigment fine particles have an average primary particle diameter of 50 nm or less, a Cv value of less than 20%, and an average circularity of 0.900 or more.

Toner for electrostatic latent image development

In a toner for electrostatic latent-image development that includes toner core particles including at least a binder resin, and shell layers with which the entire surfaces of the toner core particles are coated, an ethylene-unsaturated carboxylic acid copolymer is present at the interface between the toner core particle and the shell layer.

Toner for electrostatic latent-image development and method for producing the same

A cleaning element for an image forming apparatus, such as a printer. The cleaning element may include a brush, which may include a support structure and brush filaments extending therefrom. Each of the brush filaments has a tip at the distal end from the support structure and may be configured to contact a surface of a member to be cleaned. An inorganic microparticle may be bonded at or proximate to the tip by a discharge product as an adhesive. Thus, it is possible to provide a cleaning element capable of removing material adhering to the surface of the member to be cleaned. The cleaning element is capable of providing long-term effective cleaning of a member of an image forming apparatus during extended use.

Cleaning device for rotary member, charging device and image forming apparatus including the same

An image forming device includes an image support body on which an electrostatic latent image is formed. A developer develops the electrostatic latent image on the image support body with a toner to form a toner image. The toner image on the image support body is transferred to an intermediate transfer belt. A primary transferee transfers the toner image on the image support body onto the intermediate transfer belt, and a secondary transferee transfers the toner image on the intermediate transfer belt onto paper. The image support body and the primary transferee are offset. A volume resistance of the intermediate transfer belt is adjusted to a value within the range of 1&#xd7;10to 1&#xd7;10&#x3a9;&#xb7;cm and a surface resistance of the intermediate transfer belt is adjusted to a value within the range of 1&#xd7;10to 1&#xd7;10&#x3a9;/&#x25a1;.

Image forming apparatus and image forming method

Disclosed is an image forming apparatus, which comprises an image bearing member on which a toner image is formed, a sweep roller for removing residual toner particles from the image bearing member, and a recovery roller for recovering the toner particles from the sweep roller. The recovery roller has a diameter of 10 mm or less, and a surface roughness Rz of 1.6 &#x3bc;m to 6.4 &#x3bc;m.

Image forming apparatus and recovery roller

A low cost image forming apparatus can be provided in which the amount of remaining toner of each color in each development apparatus can be detected by a single detection sensor device and at the same time whether the development apparatus is attached to or detached from the image forming apparatus can be discerned by the detection sensor device. The image forming apparatus includes development apparatuses for each color for developing an electrostatic latent image and supply of the developer is controlled based on the detected amount of toner in each of the development apparatuses. The detection sensor device includes a light emitting member and a light receiving member which receives the light emitted from the light emitting member and output a detection signal in accordance with the intensity of received light. Each of the development apparatuses has a light path member or members and the light emitted from the light emitting member advances through the light path member or members in which the light is formed into a light different in pattern with respect to each development apparatus. Therefore, the development apparatus brought to the developing position can be discerned and the amount of toner in the development apparatus can be determined based on the detection signal, thereby supply of developer to the development apparatus is controlled.

Image forming apparatus that generates a different light pattern for different development apparatuses

A photosensitive drumis provided to carry electrostatic latent images. DevelopersK throughY supply toner to the electrostatic latent images formed on the photosensitive drum. Images formed on the photosensitive drumare transferred to an intermediate transfer belt. A primary transfer rollertransfers toner images formed on the photosensitive drumonto the intermediate transfer belt. The secondary transfer rollertransfers toner images on the intermediate transfer beltonto sheets. The belt cleaning unithas a fur brushthat electrically recovers toner, and recovers residual transfer toner remaining on the intermediate transfer beltafter a secondary transfer by the secondary transfer roller. The drive rolleris disposed in a position in opposition to the fur brushsandwiching the intermediate transfer belt, and charges both the fur brushand the secondary transfer roller

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Osaka, Japan

Hidetoshi Miyamoto