There is provided an image forming apparatus including a configuration in which a voltage of a polarity opposite to a toner charging polarity is applied. In the image forming apparatus, a guide region of a pre-transfer guide is located on a photosensitive drum side with respect to a common tangent line of a photosensitive drum and a development roller to reduce contamination of the pre-transfer guide and prevent contamination of recording materials.

An image forming device includes an image carrier carrying an image, a transfer device including paired transfer members that transport the image carrier and a recording medium, a grounded guide member that guides the recording medium to a transfer region, and a transfer power source that produces an electric field in the transfer region causing the image to be transferred onto the recording medium. The transfer power source includes a first transfer power source that imparts a first transfer voltage to one of the paired transfer members, and a second transfer power source that, when the recording medium has a predetermined resistance value or less, or is of low resistance having a conductive layer along a medium substrate face, imparts a second transfer voltage of opposite polarity and having an absolute value less than or equal to the first transfer voltage to the other of the paired transfer members.

An image forming apparatus includes a belt-shaped image bearer, a transferer, a guide, two rotators, and a support. The image bearer has an image bearing surface to bear an image thereon. The transferer forms a transfer section between the transferer and the image bearer, to transfer the image onto a recording medium. The guide is disposed upstream from the transfer section in a delivery direction of the recording medium, to guide the recording medium toward the transfer section. The two rotators are disposed upstream from the transfer section in a moving direction of the image bearer and in contact with a non-image bearing surface of the image bearer opposite to the image bearing surface, a first rotator being closer to the transfer section than a second rotator. The support supports the first rotator and the guide and adjusts a position of the first rotator and a position of the guide.

An image forming apparatus includes an image carrier that holds an electrostatic latent image and a toner image while rotating, a charger that charges the image carrier, an exposure unit that radiates light onto the image carrier to form an electrostatic latent image, a developing unit that develops the electrostatic latent image with toner, a transfer unit that transfers a toner image onto a sheet, a fixing unit that fixes the toner image onto the sheet, a charging-bias power supply that applies charging bias to the charger, a transfer-bias power supply that applies reverse transfer bias to the transfer unit, and a controller that causes the charging-bias power supply to apply the charging bias to the charger, the transfer-bias power supply to apply the reverse transfer bias to the transfer unit, and the exposure unit to radiate the light onto a region of the image carrier.

An image forming device includes an image carrier, a transfer device, a face-forming member, and a reducing element. The image carrier carries an image. The transfer device is disposed in contact with the image carrier, transports a recording medium, and applies a transfer voltage to a transfer region between the transfer device and the image carrier to transfer the image on the image carrier to the recording medium. The face-forming member is disposed in contact with a back face of the image carrier further upstream than the transfer region, is provided grounded along a direction intersecting the movement direction of the image carrier, and includes a conductive member forming a movement track face of the image carrier leading to the transfer region. The reducing element is provided on a current path going through the face-forming member, and reduces an amount of current leading from the face-forming member to ground.

An image forming apparatus includes a first printer section configured to form an image on a sheet using decolorable toner which is decolored by heating thereof, a second printer section configured to form an image on the sheet using non-decolorable toner, a heating section configured to heat the sheet on which the image is formed, and a controller configured to control the operation of the image forming apparatus based on an electric energy value which is an integrated value of power consumed within a predetermined time period.

An image forming apparatus includes a first printer section configured to form an image on a sheet using decolorable toner which is decolored by heating thereof, a second printer section configured to form an image on the sheet using non-decolorable toner, a heating section configured to heat the sheet on which the image is formed, and a controller configured to control the operation of the image forming apparatus based on an electric energy value which is an integrated value of power consumed within a predetermined time period.

An image forming apparatus includes: a conveyance section configured to convey a sheet in a direction opposite to a first conveyance direction during image formation, the direction being a second conveyance direction; and a distortion correction section disposed on an upstream side of a transfer nip in the first conveyance direction and configured to correct, when the sheet is conveyed by the conveyance section in the second conveyance direction, distortion of the sheet generated when the sheet passes through a fixing nip.

Compositions and methods that generally relates to treating a substrate and for improving adhesion of an image to a treated substrate and more particularly relates to systems and methods utilizing a combination of a poly tertiary amide, colloidal silica, and optionally a polymeric binder, for treating a substrate and for improving adhesion of an electrographic image to a treated substrate.

A method of enhancing adhesion of an image to at least one surface of a substrate is provided herein. The method includes treating at least a portion of the surface by applying a composition comprising one or more polymers to the portion of the surface. The method further includes drying the composition after applying the composition to the substrate to form a treated substrate. The method further includes printing an image from an electrophotographic printer utilizing liquid toner technology on the treated substrate. The substrate is treated and dried less than about 5 minutes prior to being printed.