Ricoh Company, Ltd.

Hidetaka Kubo

Jun Aoto

Kenichi Mashiko

Sayaka Katoh

Shinichi Nitta

Masahiro Ohmori

Daisuke Aoki

Daisuke Inoue

Junichi Awamura

Akio Takei

Atsufumi Hanazawa

Daichi Hisakuni

Shigeo Oonuma

An intermediate transfer belt is provided. The intermediate transfer belt includes a base layer, an elastic layer over the base layer, and a surface layer over the elastic layer. The elastic layer contains spherical particles and has an uneven surface formed by the spherical particles. The surface layer contains at least one of antimony-doped tin oxide or indium tin oxide.

Intermediate transfer belt and image forming apparatus

Provided is an image forming apparatus including an image bearer, a developing unit configured to develop with a toner, an intermediate transfer member, and a transferring unit, wherein the intermediate transfer member is a laminate including a base layer and an elastic layer including particles at a surface thereof to form convex-concave shapes at the surface, the particles have volume resistivity of from 1&#xd7;10ohm*cm through 1&#xd7;10ohm*cm, the toner includes additive, an amount of the additive separated from the toner is from 20 percent by mass through 35 percent by mass relative to a total amount of the additive in the toner when a toner dispersion liquid in which the toner is dispersed in a dispersant is irradiated with ultrasonic wave vibration with an irradiation energy dose of 4 kJ, and the toner has a dielectric constant of 2.6 or greater but 3.9 or less.

Image forming apparatus and image forming method

An intermediate transfer medium onto which a toner image is transferred is provided. The intermediate transfer medium comprises a base layer and an elastic layer overlying the base layer. The elastic layer contains spherical fine particles to form an irregular surface, and the spherical fine particles have a volume resistivity of 1&#xd7;10&#x3a9;&#xb7;cm or more and less than 1&#xd7;10&#x3a9;&#xb7;cm.

Intermediate transfer medium and image forming apparatus

An intermediate transfer belt is provided onto which a toner image obtained by developing a latent image formed on an image bearer with a toner is transferred. The intermediate transfer belt includes a base layer and an elastic layer laminated on the base layer. The elastic layer includes an ether-based urethane rubber and particles. The elastic layer has a flame retardancy of vertical thin material (VTM)-1 or higher in UL94-VTM test, and the intermediate transfer belt has a Martens hardness of 0.3 to 0.6 N/mmand an elastic power of 60% to 85%.

Intermediate transfer belt, image forming apparatus, and image forming method

An intermediate transferor () for an image forming apparatus includes a base layer (), an elastic layer () layered on the base layer (), and fine particles () on the elastic layer () to form an uneven surface of the elastic layer (). The fine particles () have a volume resistivity of 1&#xd7;10&#x3a9;&#xb7;cm to 1&#xd7;10&#x3a9;cm.

Intermediate transferor, method of making the same, and image forming apparatus using the same

An intermediate transfer belt, configured to receive a toner image formed by developing a latent image formed on an image bearing member with a toner, includes a base layer and an elastic layer. The elastic layer has an irregular surface formed with spherical particles, and the spherical particles include flexible particles having 0.1 MPa to 30 MPa of compressive strength and 15% to 50% of restoring ratio at the time of 10% deformation. Image forming apparatus. Image forming method.

Intermediate transfer belt, image forming apparatus and image forming method

The surface layer of an intermediate transfer belt has a concavo-convex pattern formed thereon by spherical resin particles which are independently embedded in the layer so that the embedment rate in the thickness direction of the layer is higher than 50% but lower than 100%.

Intermediate transfer belt, method for producing the same, and image forming apparatus

An intermediate transferer includes a substrate; and a surface layer overlying the substrate. The surface layer includes a crosslinked material, including a polyrotaxane including a circular molecule; a straight-chain molecule including the circular molecule in a skewering form; and a block group located at both ends of the straight-chain molecule, preventing the circular molecule from releasing, and at least one resin selected from the group consisting of acrylic resins, fluoreresins and silicone resins.

Intermediate transferer and image forming apparatus using the same

An intermediate transfer belt includes a polyimide resin or a polyamideimide resin including only &#x3b3;-butyrolactone of from 5 to 5,000 ppm as a residual solvent.

Intermediate transfer belt and method of preparing the same, and image forming apparatus

To provide an intermediate transfer belt for use in an electrophotographic apparatus, including as an outermost surface thereof: uniform convex regions formed by aligning independent spherical resin particles in a surface direction; and depressed regions formed of a lubricant layer which respectively lie between the convex regions.

Intermediate transfer belt and electrophotographic apparatus

To provide a belt for an image forming apparatus, which contains: a base layer; an elastic layer; and spherical particles, wherein the belt for an image forming apparatus is provided across a plurality of rollers of the image forming apparatus to rotate, wherein the belt for an image forming apparatus has a laminate structure where at least the base layer and the elastic layer are provided in this order, wherein the spherical particles are partially embedded in an exposed surface of the elastic layer, and wherein, relative to a width direction of the belt for an image forming apparatus, a thickness of an edge portion of the belt for an image forming apparatus is 50% to 95% of a thickness of a center portion of the belt for an image forming apparatus, and an edge curling amount of the belt is 4 mm or less.

Belt for an image forming apparatus, and image forming apparatus

To provide an intermediate transfer belt, containing a base, an elastic layer formed on the base, and spherical particles deposited on a surface of the elastic layer, in which wherein the elastic layer has micro rubber hardness of 40&#xb0; or lower in the environment of 10&#xb0; C. and 15% RH, and the intermediate transfer belt is designed to be mounted in an image forming apparatus.

To provide an intermediate transfer belt, which contains a base layer, and an elastic layer formed on the base layer, wherein the base layer contains polyimide which has a constitutional unit derived from pyromellitic acid and a constitutional unit derived from diaminodiphenyl ether, wherein the intermediate layer has a curling amount of 1.5 mm or less in an absolute value, and wherein the intermediate transfer belt is configured to receive, by transferring, a toner image formed by developing, with a toner, a latent image formed on an image bearing member.

An intermediate transfer member including a base layer as first layer, an elastic layer as second layer, and a particle layer as third layer and containing fine spherical particles arranged in plane direction thereof where the particle layer has a concavo-convex pattern formed by the fine spherical particles, the elastic layer and the particle layer being formed on the base layer in this order, wherein the intermediate transfer member has a Martens hardness of 1.0 N/mmor lower and an elastic recovery rate of 75% or higher when the intermediate transfer member is indented at a load of 40 mN under conditions of 25&#xb0; C. and 50% RH, wherein an embedment rate of the fine spherical particles in the elastic layer is 33% to 99%, and wherein the intermediate transfer member is configured to receive a toner image formed by developing, with a toner, a latent image on an image bearing member.

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Kanagawa, Japan

Hidetaka Kubo