Fuji Xerox Co., Ltd.

Fujifilm Business Innovation Corp.

Kana Yoshida

Tsuyoshi Murakami

Atsushi Sugawara

Katsuyuki Kitajima

Takafumi Koide

Masataka Kuribayashi

Yusuke Fukuda

Masahiro Uchida

Satomi Hara

Masaki Iwase

Koji Funaba

Yukiaki Nakamura

Yasuo Matsumura

Sumiaki Yamasaki

Shuji Sato

Akira Matsumoto

Yutaka Saito

Koji Sasaki

Sakon Takahashi

Satoshi Miura

Tomoaki Tanaka

Satoshi Kamiwaki

Yasuaki Hashimoto

Shinya Sakamoto

Tsutomu Furuta

A method for producing a circuit board includes providing a substrate on which a toner image formed of a thermoplastic toner has been formed and forming a conductive foil layer having a thickness of 0.1 μm to 2 μm on the toner image that has been formed on the substrate and then applying heat to the toner image and the conductive foil layer to form a wire constituted by conductive foil.

Circuit board producing apparatus

A method for producing a circuit board includes providing a substrate on which a toner image formed of a thermoplastic toner has been formed and forming a conductive foil layer having a thickness of 0.1 &#x3bc;m to 2 &#x3bc;m on the toner image that has been formed on the substrate and then applying heat to the toner image and the conductive foil layer to form a wire constituted by conductive foil.

Method for producing circuit board and method for producing integrated circuit including the same

A resin particle set includes a fluorescent color resin particle containing a fluorescent coloring agent; and a colored resin particle containing a colored coloring agent, wherein a volume average particle diameter of the fluorescent color resin particles is larger than a volume average particle diameter of the colored resin particles, and an average circularity of the fluorescent color resin particles is 0.93 or more.

Resin particle set

A white toner for electrostatic image development includes toner particles containing a binder resin, which contains at least a crystalline polyester resin and an amorphous polyester resin, and a white pigment. The loss tangent tan &#x3b4; at 30&#xb0; C. determined by dynamic viscoelasticity measurement is 0.2 or more and 1.0 or less.

White toner for electrostatic image development, electrostatic image developer, toner cartridge, process cartridge, image forming apparatus, and image forming method

A toner for developing an electrostatic image includes toner particles that each include a binder resin and a release agent. The ratio B/A of a half-width B of an exothermic peak Tc resulting from the release agent which is determined in a first cooling step by differential scanning calorimetry to a half-width A of an endothermic peak Tm resulting from the release agent which is determined in a first heating step prior to the first cooling step by differential scanning calorimetry is 1.5 or more and 4 or less.

Toner for developing electrostatic image, electrostatic-image developer, and toner cartridge

An image forming apparatus includes an image holding member; a charging unit that charges the surface of the image holding member; an electrostatic charge image forming unit that forms an electrostatic charge image on the charged surface of the image holding member; a developing unit that has an electrostatic charge image developer and that develops the electrostatic charge image on the surface of the image holding member with the electrostatic charge image developer to form a toner image; a transfer unit that transfers the toner image formed on the surface of the image holding member to a recording medium; and a fixing unit that includes a fixing belt that comes into contact with the toner image transferred to the recording medium, a rotational member that is disposed in contact with the outer surface of the fixing belt and that forms a contact area between the fixing belt and the rotational member, and a heat source that is disposed so as to face the inner surface of the fixing belt to directly heat the fixing belt, wherein the electrostatic charge image developer contains a toner that has a temperature Tat a storage modulus of G'=1&#xd7;10Pa and a temperature Tat a storage modulus of G&#x2032;=1&#xd7;10Pa and that satisfies a condition 1 and a condition 2, and the recording medium having the transferred toner image passes through the contact area to fix the toner image to the recording medium1.215&#x2264;&#x2264;1.365&#x2003;&#x2003;Condition 1:50&#xb0; C.&#x2264;&#x2264;68&#xb0; C.&#x2003;&#x2003;Condition 2:

Image forming apparatus and method for forming image

An image forming apparatus includes an image holding member, a charging unit; an electrostatic image forming unit, a development unit, a transfer unit; a fixing unit, and a cleaning unit. A toner for electrostatic image development contains a binder resin containing an amorphous resin and a crystalline resin, and paraffin wax. The toner has a volume-average particle diameter of 6 &#x3bc;m to 9 &#x3bc;m, a shape factor SF1 of 140 or more, and a toluene insoluble content within a range of 25% to 40%. The melting temperature of the paraffin wax is 60&#xb0; C. or more and 80&#xb0; C. or less. The absolute value of difference between the melting temperature of the crystalline resin and the melting temperature of the paraffin is 10&#xb0; C. or less.

Image forming apparatus

An image forming apparatus includes a transfer unit which includes a belt member having an outer peripheral surface which contacts an image holding member, and a transfer member, and the belt member is wound around both of the image holding member and the transfer member, wherein a toner to be used includes a binder resin containing an amorphous resin and a crystalline resin and has specific physical properties described in the specification, and paraffin wax having a melting temperature of 60&#xb0; C. to 80&#xb0; C., and an absolute value of a difference between the melting temperature of the crystalline resin and the melting temperature of the paraffin wax is 10&#xb0; C. or less.

An image forming apparatus includes an image holding member, a charging unit, an electrostatic charge image forming unit, a developing unit, a transfer unit, a fixing unit including a fixing belt, a pressurizing rotator that forms a nip by pressurizing an outer peripheral surface of the fixing belt, a sliding member that slides on an inner peripheral surface of the fixing belt in the nip, and a pressing member that presses the fixing belt in the direction of the pressurizing rotator, wherein a toner to be used includes a binder resin containing an amorphous resin and a crystalline resin and has specific physical properties described in the specification, and paraffin wax having a melting temperature of 60&#xb0; C. to 80&#xb0; C., and an absolute value of a difference between the melting temperature of the crystalline resin and the melting temperature of the paraffin wax is 10&#xb0; C. or less.

An image forming apparatus includes a fixing unit including a fixing belt, a pressurizing rotator that forms a nip portion between the fixing belt and the pressurizing rotator by pressurizing an outer peripheral surface of the fixing belt, a first heating rotator that is provided so as to contact an inner peripheral surface of the fixing belt in the nip portion and heats the fixing belt, and a second heating unit that heats the fixing belt separately from the first heating rotator, wherein a toner to be used has physical properties described in the specification and includes an amorphous resin, a crystalline resin, and paraffin wax having a melting temperature of 60&#xb0; C. to 80&#xb0; C., and an absolute value of a difference in a melting temperature between the crystalline resin and the paraffin wax is 10&#xb0; C. or less.

An electrostatic charge image developing toner includes toner particles containing a binder resin and a white pigment, wherein, in a particle size distribution of a maximum Feret diameter of particles of the white pigment present in the toner particle, a ratio of particles of the white pigment having a maximum Feret diameter of 200 nm or more and less than 400 nm is 50% by number or more with respect to the entire particles of the white pigment, and a maximum value of a frequency with respect to particles of the white pigment having a maximum Feret diameter of 650 nm or more and less than 1,000 nm is larger than a minimum value of a frequency with respect to particles of the white pigment having a maximum Feret diameter of 500 nm or more and less than 650 nm.

Electrostatic charge image developing toner, electrostatic charge image developer, and toner cartridge

An electrostatic charge image developing toner includes toner particles including a binder resin and a white pigment, wherein a maximum frequent value in distribution of eccentricity B of the white pigment represented by the following Expression (1) is from 0.75 to 0.95, and a skewness in the distribution of the eccentricity B is from &#x2212;1.20 to 0.00: Expression (1): eccentricity B=2d/D, wherein D represents an equivalent circle diameter (&#x3bc;m) of a toner particle in observation of the cross section of the toner particle, and d represents a distance (&#x3bc;m) from the centroid of the toner particle to the centroid of the white pigment in observation of the cross section of the toner particle.

A white toner for developing an electrostatic charge image includes a white toner particle containing a binder resin and a white pigment particle, wherein, when a number average circle equivalent diameter of the white pigment particles, which are observed in a sectional image of the white toner particle, is taken as A, and a number average circle equivalent diameter of the white pigment particles, which are present in a surface layer portion within 35% from a surface of the white toner particle with respect to a particle diameter thereof, is taken as B, a relationship expressed by A&#x3e;B is satisfied.

White toner for developing electrostatic charge image, electrostatic charge image developer, and toner cartridge

There is provided an electrostatic image-developing toner containing a binder resin, a coloring agent and a release agent having a melting temperature of 85&#xb0; C. to 120&#xb0; C., the toner having a sea-island structure involving a sea part containing the binder resin and an island part containing the release agent, wherein a mode value of the distribution of the eccentricity degree B of the release agent-containing island part, represented by the specific formula, is from 0.75 to 1.00 and a skewness of the distribution of the eccentricity degree B is from &#x2212;1.30 to &#x2212;0.50.

Electrostatic image-developing toner, electrostatic image developer, and toner cartridge

An electrostatic charge image developing toner includes a toner particle that has a sea-island structure including a sea portion containing a binder resin and an island portion containing a release agent and having at least two maximum values of distribution of a degree of uneven distribution B of the island portion shown by the following Equation (1):degree of uneven distribution=2&#x2003;&#x2003;Equation (1)in Equation (1), D represents an equivalent circle diameter (&#x3bc;m) of the toner particle obtained by cross section observation of the toner particle, and d represents a distance (&#x3bc;m) between the center of gravity of the toner particle and the center of gravity of the island portion containing the release agent obtained by cross section observation of the toner particle.

Growing community of inventors

Kanagawa, Japan

Kana Yoshida