Fujifilm Business Innovation Corp.

Fuji Xerox Co., Ltd.

Tokuya Sakamoto

Tetsuro Kodera

Takayuki Yamashita

Kosuke Yamada

Yoshiki Shimodaira

Masato Yamashita

Wataru Suzuki

Taichi Yamada

Mitsuhiro Matsumoto

Yasufumi Suwabe

Masaaki Abe

Yutaka Kiuchi

Nobuhiro Katsuta

Masayo Higashimura

Tatsuo Okuno

An image forming device, includes: a transfer unit that transfers a toner image onto a recording medium being conveyed; a main heating unit that is disposed at a downstream side of the transfer unit in a conveyance direction of the recording medium, heats the recording medium in contact with the recording medium, and fixes the toner image to the recording medium; a reversing unit that reverses front and back of the recording medium having the toner image fixed on a first surface of the recording medium by the main heating unit, and sends the recording medium to the transfer unit; a preheating unit that is arranged between the transfer unit and the main heating unit in the conveyance direction of the recording medium and heats the recording medium in a non-contact state, the preheating unit being configured to heat the recording medium so that, when the recording medium that is sent to the transfer unit by the reversing unit and on which the toner image is transferred to a second surface is heated, a temperature of the first surface of the recording medium is higher than a softening point of a toner before the recording medium is heated by the main heating unit; and a non-contact unit that brings a toner image forming region on the first surface of the recording medium on which the toner image is transferred onto the second surface and a member other than the recording medium between the preheating unit and the main heating unit in a non-contact state.

Image forming device conveying sheet in a non-contact state between a preheating unit and a main fixing unit

Provided is an image forming device including: a conveying unit configured to convey a recording medium while rotating, in a state of being in contact with a back surface of the recording medium having a front surface on which a toner image is transferred; a main heating unit configured to heat the conveyed recording medium to fix the toner image on the recording medium; and a preheating unit disposed upstream of the main heating unit in a conveying direction of the recording medium and configured to heat, in a non-contact state, the recording medium being conveyed by the conveying unit, a portion of the conveying unit that is in contact with the recording medium being formed of a material that makes a maximum temperature of the portion be equal to or lower than a temperature of the recording medium when the recording medium is heated by the preheating unit.

Image forming device with infrared heater and reflective conveying unit

An image forming device includes a transfer unit that transfers a toner image onto a recording medium that has first and second surfaces and is conveyed in a conveyance direction; a main heating unit arranged downstream of the transfer unit in the conveyance direction, and which contacts and heats the recording medium and fixes the toner image onto the recording medium; a reversing unit that reverses front and back of the recording medium having a first toner image fixed onto the first surface; and a preheating unit arranged between the transfer and main heating units in the conveyance direction and that heats the recording medium having a second toner image transferred onto the second surface. The preheating unit heats the recording medium so that a temperature of the first surface is lower than a softening point of a toner before the recording medium is heated by the main heating unit.

Image forming device

A transport device includes: a first nipping part having an outer surface; a second nipping part having an outer surface, the second nipping part being configured to form, with the first nipping part, a nip region in which a recording medium is nipped by bringing the outer surface of the second nipping part into contact with the outer surface of the first nipping part, the second nipping part being relatively movable between a first position at which a distance from the second nipping part to the first nipping part is a first distance at which the nip region is formed and a second position at which the distance from the second nipping part to the first nipping part is longer than the first distance; a transport part including a holder that holds a front end side of the recording medium, the transport part being configured to move the holder to transport the recording medium to pass through the nip region together with the holder while the recording medium is being held by the holder; and a moving mechanism configured to relatively move the second nipping part such that a middle point of a period from when a relative movement of the second nipping part from the first position to the second position is started before a holding position of the recording medium by the holder enters the nip region to when the second nipping part is relatively moved to the first position after the holding position enters the nip region precedes a middle point of a period during which the holding position passes through the nip region.

Transport device, fixing device, and image forming apparatus

A fixing device includes: a preheating unit configured to heat a recording medium above the recording medium in a non-contact state with the recording medium, the recording medium being held at a leading end of the recording medium having a recording surface on which an image is transferred, the recording medium being transported such that the recording surface faces upward; a blowing unit disposed on a side opposite to the preheating unit with respect to the recording medium and configured to blow air onto the recording medium below the recording medium; a main heating unit disposed on a downstream side of the preheating unit in a transport direction of the recording medium and configured to contact the recording medium to heat the recording medium; a detection unit disposed on an upstream side of the preheating unit in the transport direction and configured to detect a transport posture of the recording medium; and a control unit configured to control the blowing unit based on a detection result of the detection unit to adjust an amount of air to be blown to the recording medium.

Fixing device having preheating unit, blowing unit and image forming apparatus

An image forming apparatus includes: a transfer unit that faces an image holding unit and is configured to come into contact with and separate from the image holding unit with a continuous form paper continuous in a transport direction interposed between the transfer unit and the image holding unit and to transfer an image held by the image holding unit onto the continuous form paper; a displacement unit that displaces the continuous form paper to a position closer to the image holding unit when the transfer unit separates from the image holding unit; and a contact portion that contacts the continuous form paper from a downstream side in a displacement direction before the continuous form paper displaced by the displacement unit contacts the image holding unit.

Image forming apparatus

An image forming apparatus includes a forming part that forms an image on a ribbon-like medium that is being transported; and a fixing part disposed downstream of the forming part in a medium transport direction, the fixing part including multiple fixing members, which are arranged in the transport direction and fix the image to the medium by applying heat and pressure to the medium. An upstream-downstream tension difference, in the medium transport direction, of the fixing member located on the most upstream side in the transport direction is greater than those of the other fixing members in the medium transport direction.

Fixing device and image forming apparatus with an upstream-downstream tension difference

A liquid development device includes a storage section storing a liquid developer in which toner is dispersed, a development member to which the liquid developer stored in the storage section is applied using an application unit, a removing device that, after an electrostatic latent image in a latent image-holding member is developed, removes the liquid developer remaining on the development member, and a shearing device that is provided in a path through which the liquid developer removed using the removing device is returned to the storage section, and applies a shear force to the liquid developer removed using the removing device by making the liquid developer pass through a contact section of two members at least one of which rotates and that have different velocities from each other.

Liquid development device and image-forming apparatus

A development rotating member for liquid development includes a base material, an elastic layer that is provided on the base material, and a surface layer that is provided on the elastic layer and contains a polyimide resin, wherein a JIS-A hardness of the development rotating member is in a range of 40 degrees to 80 degrees.

Development rotating member for liquid development, liquid developing device, image forming apparatus, and process cartridge

A liquid development device includes a storage section storing a liquid developer in which toner is dispersed, a development member to which the liquid developer stored in the storage section is applied using an application unit, a removing device that, after an electrostatic latent image in a latent image-holding member is developed, removes the liquid developer remaining in the development member, and a shearing device that is provided in a path through which the liquid developer removed using the removing device is returned to the storage section, and applies a shear force to the liquid developer by making the liquid developer pass through a contact section of two members either or both of which rotate and that have different circumferential velocities from each other.

Growing community of inventors

Kanagawa, Japan

Tokuya Sakamoto