A fixing device includes: a heating section that heats in a non-contact manner a front surface of a recording medium; a feeding section that feeds the recording medium while causing the front surface to be opposed to the heating section; and a maintaining section that, in order to enable the recording medium to be fed by the feeding section while a rear surface that is opposite to the front surface, and that is in an image region where an unfixed-image is formed on the front surface is in a non-contact state, maintains the non-contact state.

According to an embodiment, an image processing apparatus includes a detector, a heater, and a controller. The detector detects an image formed on a sheet. The heater applies a predetermined heat amount onto the sheet to carry out erasing processing on the sheet. The controller controls, based on a detection result of the detector, the number of times the erasing processing is to be carried out on the sheet and a heat amount to be applied onto the sheet in the erasing processing.

A fixing device includes: a heating section that heats in a non-contact manner a front surface of a recording medium; a feeding section that feeds the recording medium while causing the front surface to be opposed to the heating section; and a maintaining section that, in order to enable the recording medium to be fed by the feeding section while a rear surface that is opposite to the front surface, and that is in an image region where an unfixed-image is formed on the front surface is in a non-contact state, maintains the non-contact state.

A phase control device includes: at least one switching element connected to an AC power source, the switching element being capable of: turning on and off at specified timings; delivering AC power to a load upon turn-on and cutting it off upon turn-off; and keeping an on-time from the start to the end of turn-on and an off-time from the start to the end of turn-off, the on-time and off-time being variable; a timing setting portion that sets a turn-on and turn-off timing for turning on and off the switching element; a judgment portion that judges whether or not the turn-on and turn-off timing are on at a phase within a first or second phase range; and a processor that starts turning on and off the switching element at the turn-on and turn-off timing, the processor being capable of adjusting the on-time and off-time depending on the judgment result.

An image forming system includes an image forming apparatus, a sheet laminator, and circuitry. The sheet laminator performs a lamination processing on a two-ply sheet with a sheet, which is conveyed from the image forming apparatus and inserted between two sheets of the two-ply sheet. The circuitry performs a lamination print mode and a shift mode. In the lamination print mode, the sheet laminator performs the lamination processing on the sheet. In the shift mode, a power supply to the image forming apparatus starts and the power supply ends when the power supply reaches a first peak value and is stabilized during a first start-up period. Also, in the shift mode, the power supply to the sheet laminator starts and the power supply ends when the power supply reaches a second peak value and is stabilized during a second start-up period shifted from the first start-up period.

A phase control device includes: at least one switching element connected to an AC power source, the switching element being capable of: turning on and off at specified timings; delivering AC power to a load upon turn-on and cutting it off upon turn-off; and keeping an on-time from the start to the end of turn-on and an off-time from the start to the end of turn-off, the on-time and off-time being variable; a timing setting portion that sets a turn-on and turn-off timing for turning on and off the switching element; a judgment portion that judges whether or not the turn-on and turn-off timing are on at a phase within a first or second phase range; and a processor that starts turning on and off the switching element at the turn-on and turn-off timing, the processor being capable of adjusting the on-time and off-time depending on the judgment result.

According to an embodiment, an image processing apparatus includes a detector, a heater, and a controller. The detector detects an image formed on a sheet. The heater applies a predetermined heat amount onto the sheet to carry out erasing processing on the sheet. The controller controls, based on a detection result of the detector, the number of times the erasing processing is to be carried out on the sheet and a heat amount to be applied onto the sheet in the erasing processing.

An image forming apparatus includes an accommodating portion configured to accommodate a recording material; a first heating portion configured to heat the recording material accommodated in the accommodating portion; a recording material feeding portion configured to feed the recording material from the accommodating portion; an image forming portion configured to form an image, on a surface of the recording material fed by the recording material feeding portion, with a liquid developer containing toner and an ultraviolet curable agent; a second heating portion configured to heat the image, formed on the surface of the recording material, by irradiating the surface of the recording material with infrared radiation; and an ultraviolet irradiating portion configured to irradiate the surface of the recording material, with ultraviolet radiation, already irradiated with the infrared radiation by the second heating portion.

An electrophotographic imaging apparatus includes a conditioning unit configured to heat a substrate; and an image forming unit configured to develop an image and to transfer the developed image to the heated substrate. The image forming unit is located downstream of the conditioning unit. The conditioning unit is configured to emit radiation having a wavelength between 1 micrometre and 5 micrometre, to the substrate. The conditioning unit includes at least one infrared radiator which is configured to operate at a temperature between 500 and 2500 degrees Celsius.

An image forming system including an image forming apparatus including a reception unit configured to receive a decolorable printing job to execute decolorable printing processing using a decolorable recording material on which a decolored character is to be expressed at a temperature lower than a predetermined temperature, includes a notification unit configured to provide information, and a controller configured to obtain temperature information, wherein, in a case where the decolorable printing job is executed, the notification unit provides a notification of a warning against execution of the decolorable printing job based on the temperature information indicating a temperature at which the decolored character can be expressed.