Abstract: An image forming apparatus includes an image holding member, a first charging unit that charges a surface of the image holding member, a latent image forming unit that forms an electrostatic latent image on a charged surface of the image holding member, a second charging unit that charges a toner contained in a liquid developer, a developing unit that accommodates the liquid developer and develops the electrostatic latent image by using the liquid developer containing the toner charged by the second charging unit to form a toner image, a transfer unit that transfers the toner image to a recording medium, and a fixing unit that fixes the toner image to the recording medium. The liquid developer includes a toner in which a compound having a charge-accepting functional group has been bonded to a surface of toner particles, an ionization-controlling agent that ionizes the charge-accepting functional group, and a carrier liquid.

Abstract: A liquid developer includes a toner in which a compound having a charge-accepting functional group has been bonded to a surface of toner particles, and a carrier liquid which makes a charge density of a surface of the toner become 1 ?C/m2 or less when the toner is dispersed in the carrier liquid.

Abstract: A liquid developer includes a toner in which a compound having a charge-accepting functional group has been bonded to a surface of toner particles, and a carrier liquid which makes a charge density of a surface of the toner become 1 ?C/m2 or less when the toner is dispersed in the carrier liquid.

Abstract: An image forming apparatus includes an electrostatic latent image holding member, a charging device, a latent image forming device, a developing device that stores a liquid developer containing a toner and a non-volatile carrier liquid, and develops the electrostatic latent image formed on the surface of the electrostatic latent image holding member by the liquid developer to form a toner image, a transfer device that transfers the toner image onto a surface of an impermeable recording medium, and a fixing device, wherein when the SP value of the toner is set as SP(t), the SP value of the non-volatile carrier liquid is set as SP(c), and the SP value of the recording medium is set as SP(m), an absolute value of a difference between SP(t) and SP(c) is from 1.5 to 7.0 and the following relational expression (A) is satisfied: |SP(c)?SP(m)|>|SP(t)?SP(m)|.

Abstract: Provided is an image forming apparatus including a first image forming unit that forms a first image on a front surface of a transported medium with a developer including toners and non-volatile oils, a removing unit that heats non-volatile oils on the front surface of the medium to remove the oils, a second image forming unit that forms a second image on a back surface of the medium with a developer including toners and non-volatile oils, a removing section that heats non-volatile oils on the back surface of the medium to remove the oils, and a fixing unit that fixes the first image and the second image on the front surface and the back surface of the medium.

Abstract: Provided is an image forming apparatus including a first image forming unit that forms a first image on a front surface of a transported medium with a developer including toners and non-volatile oils, a removing unit that heats non-volatile oils on the front surface of the medium to remove the oils, a second image forming unit that forms a second image on a back surface of the medium with a developer including toners and non-volatile oils, a removing section that heats non-volatile oils on the back surface of the medium to remove the oils, and a fixing unit that fixes the first image and the second image on the front surface and the back surface of the medium.

Abstract: An image forming apparatus includes an image carrier, a charging unit, an electrostatic latent image forming unit, a developing unit that contains a liquid developer containing a toner and a carrier solution and that develops an electrostatic latent image with the liquid developer to form a toner image on the surface of the image carrier, a transfer unit that transfers the toner image onto a recording medium, and a fixing unit that includes at least one pair of first and second rotating members that form a nip between the first and second rotating members. The following condition (A) is satisfied: the amount of the carrier solution on the surface of the toner image is about 0.7 g/m2 or less during passing of the recording medium through the nip of the most-downstream pair of the at least one rotating-member pair in the leading direction of the recording medium.

Abstract: A liquid developer includes a toner that contains a binder resin and a release agent, and a carrier liquid that has a difference (?SP (tc)) in SP value from the binder resin of from 1.5 to 7.0, wherein the release agent is not eluted in the carrier liquid at a temperature lower than a glass transition temperature of the binder resin.

Abstract: An image forming apparatus includes an electrostatic latent image holding member, a charging device, a latent image forming device, a developing device that stores a liquid developer containing a toner and a non-volatile carrier liquid, and develops the electrostatic latent image formed on the surface of the electrostatic latent image holding member by the liquid developer to form a toner image, a transfer device that transfers the toner image onto a surface of an impermeable recording medium, and a fixing device, wherein when the SP value of the toner is set as SP(t), the SP value of the non-volatile carrier liquid is set as SP(c), and the SP value of the recording medium is set as SP(m), an absolute value of a difference between SP(t) and SP(c) is from 1.5 to 7.0 and the following relational expression (A) is satisfied: |SP(c)?SP(m)|>|SP(t)?SP(m)|.

Abstract: Provided is a fixing device, including a fixing unit that fixes a toner image developed by a developer including toner and a carrier liquid to a recording medium, and a preprocessing unit that includes a metallic rotating body that is placed on the toner image side of the recording medium and rotates, a pressure member that includes an elastic layer and pressurizes the recording medium along with the rotating body, and a heating unit that heats the rotating body, the preprocessing unit being placed at the upstream side of the fixing unit in a transport direction of the recording medium, and performing preprocessing by which a portion of the carrier liquid is removed from the recording medium.

Abstract: An image forming apparatus includes an image carrier, a charging unit, an electrostatic latent image forming unit, a developing unit that contains a liquid developer containing a toner and a carrier solution and that develops an electrostatic latent image with the liquid developer to form a toner image on the surface of the image carrier, a transfer unit that transfers the toner image onto a recording medium, and a fixing unit that includes at least one pair of first and second rotating members that form a nip between the first and second rotating members. The following condition (A) is satisfied: the amount of the carrier solution on the surface of the toner image is about 0.7 g/m2 or less during passing of the recording medium through the nip of the most-downstream pair of the at least one rotating-member pair in the leading direction of the recording medium.

Abstract: A liquid developing device includes a developer accommodating section that accommodates a liquid developer containing a toner and a carrier liquid and having a toner concentration of from 23 to 27 vol %; a developing member to which the liquid developer accommodated in the developer accommodating section is supplied to a surface thereof to form a liquid developer layer with a thickness of from 5.8 to 7.5 ?m, of which a toner coverage is from 0.71 to 1.1, and the liquid developer layer thus formed is supplied to a surface of an image holding member to develop an electrostatic latent image formed on the surface of the image holding member to thus form a toner image; and a developer charging unit that charges the liquid developer layer before the liquid developer layer is supplied to the surface of the image holding member.

Abstract: A liquid developer includes a toner in which a compound having a charge-accepting functional group has been bonded to a surface of toner particles, and a carrier liquid which makes a charge density of a surface of the toner become 1 ?C/m2 or less when the toner is dispersed in the carrier liquid.

Abstract: A liquid developer includes a toner that contains a binder resin and a release agent, and a carrier liquid that has a difference (?SP (tc)) in SP value from the binder resin of from 1.5 to 7.0, wherein the release agent is not eluted in the carrier liquid at a temperature lower than a glass transition temperature of the binder resin.

Abstract: An image forming apparatus includes: a transporting path; a heating unit on the transporting path that is movably provided in a direction coming in contact with and departing from a continuous recording medium and that heats the continuous recording medium; a braking unit that has a first braking member and a second braking member and that brakes transportation of the continuous recording medium by sandwiching in the continuous recording medium between the first and second braking members, wherein the first and second braking members are provided on upstream and downstream sides on the transporting path of the heating unit, respectively; and a control unit that controls that the heating unit is brought into contact with the continuous recording medium and the braking of the continuous recording medium is released by the braking unit.

Abstract: A gloss-imparting method that includes (a) applying heat and pressure to one side of a recording material having an image of toner formed on both sides, and fixing the image to the one side of the recording material; (b) cooling the one side of the recording material; (c) applying heat and pressure to the other side of the recording material, and fixing the image to the other side of the recording material; and (d) cooling the other side of the recording material, in the step (a), the fixing being performed such that a value of exp(?T·tan ?0) will be approximately 0.85 or less, where tan ?0 is a loss tangent of the toner when measured by dynamic viscoelastic measurement at a frequency of approximately 1 rad/sec at approximately the same temperature as a fixing temperature of the step (a), and T is a fixing time in the step (a).

Abstract: An image forming apparatus includes: a transporting path; a heating unit on the transporting path that is movably provided in a direction coming in contact with and departing from a continuous recording medium and that heats the continuous recording medium; a braking unit that has a first braking member and a second braking member and that brakes transportation of the continuous recording medium by sandwiching in the continuous recording medium between the first and second braking members, wherein the first and second braking members are provided on upstream and downstream sides on the transporting path of the heating unit, respectively; and a control unit that controls that the heating unit is brought into contact with the continuous recording medium and the braking of the continuous recording medium is released by the braking unit.

Abstract: A fixing device for fixing an unfixed toner image by heating and pressurizing a recording material by which the unfixed toner image is carried includes a heating member having a heat source, a pressurizing member that faces the heating member and that forms a fixing nip region between the heating member and the pressuring member, a belt member that circulates while being tensioned around the heating member and is able to transport the recording material while in contact with a surface of the unfixed toner image of the recording material, and a belt driving device that temporarily stops or decelerates the belt member after a rear edge of the recording material passes through the fixing nip region, and that restores the belt member before a leading edge of a subsequent recording material reaches the fixing nip region.

Abstract: A gloss-imparting method that includes (a) applying heat and pressure to one side of a recording material having an image of toner formed on both sides, and fixing the image to the one side of the recording material; (b) cooling the one side of the recording material; (c) applying heat and pressure to the other side of the recording material, and fixing the image to the other side of the recording material; and (d) cooling the other side of the recording material, in the step (a), the fixing being performed such that a value of exp(?T·tan ?0) will be approximately 0.85 or less, where tan ?0 is a loss tangent of the toner when measured by dynamic viscoelastic measurement at a frequency of approximately 1 rad/sec at approximately the same temperature as a fixing temperature of the step (a), and T is a fixing time in the step (a).

Abstract: An electrophotographic image-receiving sheet which includes a support, a toner-receiving layer which contains thermoplastic resin. The fixing belt electrophotographic sheet has an optimized separation force at a surface of the electrophotographic image-receiving sheet from the toner-receiving layer. Having a highly improved long-run properties, the fixing belt electrophotographic sheet realizes a stable paper feed without offset, and provides a good quality image with rich photographic features.