An image forming apparatus includes: an image forming unit that forms an image by transferring toner onto a paper sheet; a fixing unit that fixes the image onto the paper sheet having the image formed thereon by the image forming unit; a charging unit that electrically charges the paper sheet having the image fixed thereonto by the fixing unit; and an adhesion preventing unit that prevents adhesion of wax to the charging unit, the wax being contained in the toner transferred onto the paper sheet, the adhesion preventing unit being located on an upstream side of the charging unit in a direction of conveyance of the paper sheet.

The image forming system having an image forming apparatus and a charge adjusting apparatus has a decision unit that decides an amount of charge to be applied to a recording sheet from coverages of toner images of both surfaces of the recording sheet, the image forming apparatus has a fixing unit that heats and presses a recording sheet to which a toner image is transferred, thereby fixing the toner image to the recording sheet, and the charge adjusting apparatus has a voltage applying unit that applies a voltage to the recording sheet to which the toner image is fixed by the fixing unit, thereby applying charge with the amount decided by the decision unit to the recording sheet.

A conveyance device includes a guide, a positioner, and a pusher. The guide extends in a longitudinal direction of an image bearer and is disposed upstream from a transfer position, at which an image is transferred from the image bearer to the recording medium, in a direction of conveyance of a recording medium to guide the recording medium. The positioner positions an end of the guide relative to the image bearer. The pusher contacts the guide at a position closer to a center of the guide than the end of the guide in the longitudinal direction, to push the guide toward the image bearer.

An electrophotographic photoreceptor for contact charging with a DC voltage, includes a conductive substrate, an undercoat layer provided on the conductive substrate, a charge generation layer provided on the undercoat layer, a charge transport layer provided on the charge generation layer, and a surface protective layer provided on the charge transport layer, in which the surface protective layer is a cured film of a composition containing a reactive charge transport material and contains a hydroxy group and a benzene ring structure, and a value of a peak area of the hydroxy group/a peak area of the benzene ring structure that are measured by an attenuated total reflection method of infrared spectroscopy, is greater than 0.05 and 0.36 or less.

A charge-eliminating apparatus includes a charge-eliminating member configured to come into contact with a sheet and eliminate static charges from the sheet, a power supply configured to apply a voltage to the charge-eliminating member, a current detection circuit configured to detect a current flowing through the charge-eliminating member, and a control unit configured to control a value of the voltage by the power supply, based on a detection result obtained by the current detection circuit when the sheet passes over the charge-eliminating member, such that the current falls within a predetermined range with respect to a target value, wherein the control unit acquires a detection result of an environment detection sensor that detects an environmental condition, and wherein the control unit changes the target value based on the detection result of the environment detection sensor during execution of a job that eliminates static charges.

An image forming apparatus includes an image printing unit configured to print an image on a sheet, a charge removing unit that is arranged downstream of a reversing conveyance path in a sheet conveyance direction and configured to remove a charge of a sheet, and a charge removing control unit configured to control voltage to be applied to the charge removing member, wherein the charge removing control unit performs control to apply voltage to the charge removing member with first polarity in a case where a first simplex printing operation is executed, to apply voltage to the charge removing member with second polarity in a case where a second simplex printing operation is executed, and to apply voltage to the charge removing member with the first polarity in a case where a duplex printing operation is executed.