Fujifilm Business Innovation Corp.

Fuji Xerox Co., Ltd.

Shogo Hayashi

Satoya Sugiura

Minoru Rokutan

Masato Ono

Hiroaki Tanaka

Masato Furukawa

Masayuki Seko

Takuro Hoshio

Daisuke Tanemura

Koichi Matsumoto

Shigeru Fukuda

Tomoko Suzuki

Makoto Ochiai

Futoshi Takei

Jun Kimura

Yusuke Watanabe

Daisuke Tano

Kenta Shingu

Yosuke Kubo

Kenji Omori

Iori Nishimura

Sayaka Inoue

A transfer belt includes a substrate layer that includes polyester, silicone particles, and conductive particles.

Transfer belt having a substrate layer that includes polyester, silicone particles, and conductive particles, transfer device having the transfer belt, and image forming apparatus having the transfer device

A film contains a siloxane compound having an alkyl group and a resin having a density of 1.1 g/cmor higher and a glass transition temperature of 150° C. or higher.

Film, member, transfer device, fixing device, and image forming apparatus

An image forming apparatus includes a photoconductor, a charging section that charges a surface of the photoconductor, an electrostatic charge image forming section that forms an electrostatic charge image on the charged surface of the photoconductor, a developing section that accommodates a developer containing a toner and develops the electrostatic charge image formed on the surface of the photoconductor by using the developer to form a toner image, a transfer section that includes an endless belt and transfers the toner image to a recording medium; and a cleaning section that includes a cleaning blade that comes into contact with a surface of the endless belt and performs cleaning of the surface of the endless belt with the cleaning blade, in which a dynamic friction coefficient μ between the endless belt and the cleaning blade is 0.10 or more and 0.25 or less, and the endless belt has an outer peripheral surface on which an uncharged toner is scattered by a wind force of wind pressure of 23 kPa or smaller at a temperature of 22° C. and relative humidity of 55%.

Image forming apparatus and transfer unit

An image forming apparatus member includes a surface layer containing a Si-atom containing polymer as a major component. The dispersive component of the surface free energy of the surface layer is 25 mN/m or less, the dipole component of the surface free energy of the surface layer is 5 mN/m or less, and the hydrogen bonding component of the surface free energy of the surface layer is 5 mN/m or less.

Image forming apparatus member, transfer device, and image forming apparatus

A conductive roller includes a support member, an elastic layer disposed on an outer peripheral surface of the support member, and a surface layer disposed on an outer peripheral surface of the elastic layer. The elastic layer includes a cylindrical elastic foam and a conductive covering layer covering an exposed surface of the elastic foam, and the elastic layer has a hysteresis loss of 44% or less.

Conductive roller, transfer device, process cartridge, and image forming apparatus

A transfer device includes an intermediate transfer belt that has an outer peripheral surface to which a toner image is to be transferred, a primary transfer device that has a primary transfer member performing primary transfer of a toner image formed on a surface of an image holder to the outer peripheral surface of the intermediate transfer belt, and a secondary transfer device that has a secondary transfer belt arranged in contact with the outer peripheral surface of the intermediate transfer belt and performing secondary transfer of the toner image transferred to the outer peripheral surface of the intermediate transfer belt to a surface of a recording medium, in which the intermediate transfer belt has an indentation modulus A of 5,000 MPa or more, and the secondary transfer belt has an indentation modulus B of 300 MPa or less and a tensile modulus C of 250 MPa or more.

Transfer device and image forming apparatus

In an endless belt, the absolute value of an electrostatic capacitance C and the absolute value of an alternating-current resistance Z when an alternating voltage of 1 Vp-p is applied in a frequency range of from 10000 Hz to 0.1 mHz from a high frequency side satisfy Formula (1) below, and an alternating-current resistance Zwhen an alternating voltage of 1 Vp-p with a frequency of 0.63 Hz is applied satisfies Formula (2) below. Moreover, an alternating-current resistance Zwhen an alternating voltage of 1 Vp-p with a frequency of 630 Hz is applied satisfies Formula (3) below:log≤3.18×log−30.27;  Formula (1):6.3≤log≤6.9; and  Formula (2):9.1≤log≤9.9.  Formula (3):

Endless belt, transfer device, and image forming apparatus

A conductive roller includes a support member, an elastic layer disposed on an outer peripheral surface of the support member, and a surface layer disposed on an outer peripheral surface of the elastic layer. The elastic layer includes a cylindrical elastic foam and a conductive covering layer covering an exposed surface of the elastic foam and has a volume resistance value of 10&#x3a9; or less at an applied voltage of 10 V. The elastic foam has a conductive particle content of 1% by mass or less based on the total mass of the elastic foam.

A conductive roll includes a support member, an elastic layer disposed on an outer peripheral surface of the support member, a surface layer disposed on an outer peripheral surface of the elastic layer, and an intermediate layer disposed between the elastic layer and the surface layer, the intermediate layer having a Poisson ratio of 0.40 or less.

Conductive roll, transfer device, process cartridge, and image forming apparatus for image transfer

A conductive roller includes a support member, an elastic layer disposed on an outer peripheral surface of the support member, and an outer layer disposed on an outer peripheral surface of the elastic layer. The elastic layer includes a cylindrical elastic foam and has a Young&#x25a1;s modulus of 150 kPa or less.

An image forming apparatus includes a photosensitive member, an intermediate transfer body including a surface layer that includes an acrylic resin and a fluorine-containing polyether, first and second transfer units, and an intermediate transfer body cleaning unit that includes a cleaning blade including a tetrahedral amorphous carbon layer disposed on a surface of a contact portion of the cleaning blade, the contact portion being arranged to contact the intermediate transfer body, and removes a residual toner by bringing the cleaning blade into contact with the intermediate transfer body. Linear velocities of the intermediate transfer body and the photosensitive member are adjusted to satisfy a requirement (1): Requirement (1): 0.3&#x2264;|Linear velocity of Intermediate transfer body&#x2212;Linear velocity of Photosensitive member|/Linear velocity of Intermediate transfer body&#xd7;100&#x2264;1.5.

Image forming apparatus and intermediate transfer unit capable of maintaining a transfer performance of an intermediate transfer body

A conductive roll includes a support member, an elastic layer disposed on an outer peripheral surface of the support member, and a top layer disposed on an outer peripheral surface of the elastic layer. In a case where a pushing amount of a metal roll into the conductive roll is 1.7%, the metal roll having an outer diameter identical to an outer diameter of the conductive roll, a shrinkage rate of a surface of the conductive roll with respect to the outer diameter of the conductive roll is equal to or more than 5%.

Conductive roll, transfer device, process cartridge, and image forming apparatus

An endless belt includes either a single-layer body including a layer including an imide resin and conductive particles, or a multilayer body including the layer as an outermost layer. The ratio y/x of the layer is 0.8992 or more and 1.0157 or less, where x [log &#x3a9;/&#x25a1;] is the common logarithm of the surface resistivity of the outer peripheral surface of the layer measured with a ring probe when a voltage of 100 V is applied to the layer for 3 seconds at a load of 1 kg, and y [log &#x3a9;&#xb7;cm] is the common logarithm of the volume resistivity of the layer measured with a ring probe when a voltage of 100 V is applied to the layer for 5 seconds at a load of 1 kg.

Provided is a transfer device that includes an intermediate transfer body which is a first endless belt including a resin and conductive carbon particles and in which in a spatial distribution of the conductive carbon particles that are present in an evaluation region of 6.3 &#x3bc;m&#xd7;4.2 &#x3bc;m on an outer peripheral surface; a first transfer component that first-transfers a toner image formed on a surface of an image carrier to a surface of the intermediate transfer body; and a second transfer component which has a second endless belt disposed so as to face the outer peripheral surface of the intermediate transfer body, which second-transfers the toner image transferred to the surface of the intermediate transfer body to a surface of a recording medium on the second endless belt.

A transfer unit includes an intermediate transfer belt including a resin and in which in a spatial distribution of conductive carbon particles that are present in an evaluation region of 6.3 &#x3bc;m&#xd7;4.2 &#x3bc;m on an outer peripheral surface, an integrated value of a statistic L(r) in an interparticle distance r of 0.05 &#x3bc;m or more and 0.30 &#x3bc;m or less is 0 or more and 0.1 or less; and a cleaning component including a cleaning blade which contacts the outer peripheral surface of the intermediate transfer belt and in which a value of M100/Re is 0.25 or more and a value of Re is 25 or more where M100 represents a 100% modulus (MPa) of a contact portion of the cleaning blade contacts the intermediate transfer belt, and Re represents a rebound resilience coefficient (%) of the contact portion:():=&#x221a;{square root over (()/&#x3c0;)}&#x2212;&#x2003;&#x2003;(1)  

Growing community of inventors

Kanagawa, Japan

Shogo Hayashi