Fuji Xerox Co., Ltd.

Miho Ikeda

Koichiro Yuasa

Aya Kakishima

Yasumitsu Harashima

Toko Hara

Takaharu Nakajima

Yasuhiro Oda

Shinji Okuyama

Akihisa Maruyama

Makoto Hirota

Jun Abe

Takashi Ochi

Shota Oba

Yoshihiro Hayashi

Kenji Sawai

Yoshiyuki Tominaga

Yutaka Kiuchi

Yoshiki Shimodaira

Daisuke Nakai

Yukiko Miyakoshi

Fumiyuki Honda

An image forming apparatus includes an image holding body that holds an image to be transferred to a recording material; a developing unit that causes a mixture, in which plural kinds of developers are mixed, to adhere to the image holding body and that forms an image on the image holding body; a transfer unit that transfers an image formed on the image holding body to a recording material; and a change portion that changes a transfer condition that is a condition under which the transfer unit performs transfer so that a ratio of the plural kinds of developers in the image to be transferred to a recording material becomes close to a predetermined ratio.

Image forming apparatus

An image forming apparatus includes image forming units, a transfer unit that transfers a superposed toner image including toner images formed by the image forming units onto a sheet, a fixing unit that fixes the superposed toner image onto the sheet, and a controller that performs control such that a toner image is formed while the amount of toner used per unit area by the second image forming unit when forming a line image is smaller than that when forming a solid image. The image forming units include a first image forming unit that forms a toner image that is transferred onto the transfer unit relatively earlier than the other toner images and a second image forming unit that forms a toner image that is transferred onto the transfer unit relatively later than the other toner images, the first and second image forming units using the same color toner.

Image forming apparatus that differs toner use when forming a line image than when forming a solid image

An image forming apparatus includes a transfer unit that transfers a toner image to a recording medium; a non-white toner image forming unit that forms a non-white toner image on the transfer unit by using non-white toner having a non-white color that differs from white; a white toner image forming unit that forms a white toner image on the transfer unit by using white toner that is white in color after the non-white toner image is formed on the transfer unit; and a control unit that controls an amount of the white toner used by the white toner image forming unit to form the white toner image so that the amount of the white toner is smaller when the non-white toner image is formed under the white toner image than when no toner image is formed under the white toner image.

Image forming apparatus for toner image

An image forming apparatus includes a first image forming portion that uses toner containing flat pigment; a second image forming portion that uses toner not containing the flat pigment; and a toner image carrier that carries a first toner image that is formed in the first image forming portion and a second toner image that is formed in the second image forming portion. The image forming apparatus has a mode in which a relationship Am&#x3c;Ac is satisfied, where Am denotes a number of toner layers of the first toner image that is carried by the toner image carrier, and Ac denotes the number of toner layers of the second toner image that is carried by the toner image carrier.

Image forming apparatus using flat toner to obtain a gloss

An image forming apparatus includes an image forming unit that forms, when forming an image with a white toner on a colored recording medium, a base toner layer and a white toner layer in an overlapped manner such that the base toner layer is inserted between the white toner layer and the colored recording medium, and a fixing unit that fixes the base toner layer and the white toner layer that are formed by the image forming unit on the recording medium.

Image forming apparatus having a white toner

An image forming apparatus includes: a first image forming section that uses a toner containing flat pigment particles; a second image forming section that uses a toner not containing the flat pigment particles; and a fixing section that fixes an image formed on a recording medium to the recording medium using heat. The quantity of heat that the fixing section applies to the image is increased in the case where the image formed on the recording medium using the toner containing the flat pigment particles is to be fixed compared to a case where the image formed on the recording medium using the toner not containing the flat pigment particles is to be fixed.

Image forming apparatus fixing of toner containing flat particles

An image forming apparatus includes an image forming unit, a heating unit, and a fixing unit. The image forming unit uses a toner including a flat pigment. The heating unit heats a recording medium. The fixing unit allows the recording medium to pass therethrough so as to cause an image formed on the recording medium to be fixed onto the recording medium by heat. In the image forming apparatus, the heating unit heats the recording medium on which the image has not been formed, the image forming unit forms the image on the recording medium having been heated, and the fixing unit fixes the image having been formed onto the recording medium.

Image forming apparatus utilizing flat pigment

An image forming apparatus includes a first forming unit that forms a first image by using a toner that contains a pigment other than a flat pigment; a second forming unit that forms a second image by using a toner that contains a flat pigment; a transfer body that transports the first image and the second image transferred thereon and transfers the first image and the second image onto a recording medium; a first transfer member that nips the transfer body in cooperation with the first forming unit with a first load and transfers the first image from the first forming unit onto the transfer body; and a second transfer member that nips the transfer body in cooperation with the second forming unit with a second load, which is larger than the first load, and transfers the second image from the second forming unit onto the transfer body.

Image forming apparatus that transfers a first image formed using a toner containing a pigment other than a flat pigment and that transfers a second image formed using a toner containing a flat pigment

Provided is an image forming apparatus including a first image portion that uses toner including a flat pigment, a second image portion that uses toner that does not include the flat pigment, a fixing portion that fixes an image formed on a recording medium to the recording medium by heat, and a controller that performs a control that switches the fixing portion to a first state in which an amount of heat similar to an amount of heat applied to the image when an image formed by the toner that does not include the flat pigment is fixed to the recording medium is applied to the image, and a second state in which, compared to when the image formed by the toner that does not include the flat pigment is fixed to the recording medium, the amount of heat applied to the image by the fixing portion is large.

Image forming apparatus with flat pigment control

Provided is an image forming apparatus including a first image unit that uses toner which contains a flat pigment, a second image unit that uses toner which does not contain a flat pigment, and a fixing unit that fixes an image which is formed on a recording medium to the recording medium by using heat while transporting the recording medium, wherein the recording medium is transported again to the fixing unit after the image formed on the recording medium by the toner containing the flat pigment is fixed to the recording medium by the fixing unit.

An image forming apparatus includes an endless transfer member, a first transfer section, a second transfer section, and a medium transfer section. An image is transferred to the transfer member during circulation of the transfer member. The first transfer section forms an image using a toner containing flat metallic pigment particles, and transfers the formed image to the transfer member through a transfer current. The second transfer section forms an image using a toner not containing flat metallic pigment particles, and transfers the formed image to the transfer member through a transfer current. The second transfer section is disposed upstream of the first transfer section in a circulation direction of the transfer member. The medium transfer section transfers the image transferred to the transfer member to a recording medium through a transfer current. The transfer current for the first transfer section is smaller than that for the second transfer section.

Image forming apparatus including a first transfer section using toner containing flat metallic pigment particles and second transfer section using toner not containing flat metallic pigment particles

Provided is an image forming apparatus including a first image unit that uses toner which contains a flat pigment, a second image unit that uses toner which does not contain a flat pigment, and a fixing unit that includes a heating member which contacts with one surface of a recording medium where an image is formed to heat the image and a contact member that contacts with the other surface of the recording medium, and fixes the image to the recording medium, wherein an amount of heat that is applied to the image from the contact member is larger when the image formed by the toner containing the flat pigment is fixed to the recording medium than when the image formed by the toner not containing the flat pigment is fixed to the recording medium.

An image forming apparatus includes a first image forming portion that forms a toner image on a latent image carrier with a toner containing a flat pigment; and a second image forming portion that forms a toner image on a latent image carrier with a toner not containing the flat pigment. The toner images formed by these image forming portions are transferred to a toner image carrier or a recording medium. The average charge amount per particle of the toner containing the flat pigment is smaller than that of the toner not containing the flat pigment. A transfer width is larger than the particle diameter of the toner containing the flat pigment. A transfer current flowing between the latent image carrier of the second image forming portion and the toner image carrier or the recording medium is higher than or equal to a value required to form an electric field.

A developing device includes a first developing member rotating such that a moving direction of a portion opposing the image carrier is opposite a moving direction of the image carrier. A second developing member is provided on a downstream side of the first developing member in a rotating direction of the image carrier rotating such that a moving direction of a portion opposing the image carrier is the same as the moving direction of the image carries. A distributing member is supported movably relative to a proximal portion where the first developing member is closest to the second developing member so as to distribute developer to the first and second developing members by contact with the developer, and a biasing member biases the distributing member upstream in the rotating direction of the first developing member.

Developing device, assembly, and image forming apparatus with a biasing member

A developing device includes: a developing device main body in which a developer chamber containing a developer is formed; a pressure application area forming unit that is provided in the developer chamber so as to form a pressure application area where pressure is applied to the developer in the developer chamber because of movement of the developer contained in the developer chamber; and a pressure regulating unit that regulates the pressure applied to the developer in the pressure application area in response to temperature of the developer in the pressure application area.

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Kanagawa, Japan

Miho Ikeda