A pressure-printed material preparing apparatus includes an attachment unit that attaches, powder which exhibits adhesiveness when pressure is applied, to a surface to be bonded of a recording medium; a fixation unit that applies pressure to the recording medium to which the powder is attached to fix the powder to the recording medium as an adhesive layer; a folding unit that folds the recording medium of which the adhesive layer is formed on the surface to be bonded, such that two portions of the surface to be bonded are opposed to each other; and an application unit that applies pressure to the recording medium in which the surfaces to be bonded are opposed to each other, to thereby bond the adhesive layer on one surface and the adhesive layer on the other surface.

An image forming apparatus includes a first toner image forming unit, a second toner image forming unit, and a transfer section. The first toner image forming unit forms a first toner image with use of a first toner. The first toner includes a binder resin. The binder resin has a weight-average molecular weight that falls within a range of from 12297 to 14019, both inclusive. The second toner image forming unit forms a second toner image with use of a second toner. The transfer section transfers the first toner image onto a print medium, and transfers the second toner image onto the print medium in a region that overlaps a portion or all of a region where the first toner image has been transferred. The print medium includes a polymer compound.

An image forming apparatus includes a first toner image forming unit, a second toner image forming unit, and a transfer section. The first toner image forming unit forms a first toner image with use of a first toner. The first toner includes a binder resin. The binder resin has a weight-average molecular weight that falls within a range of from 12297 to 14019, both inclusive. The second toner image forming unit forms a second toner image with use of a second toner. The transfer section transfers the first toner image onto a print medium, and transfers the second toner image onto the print medium in a region that overlaps a portion or all of a region where the first toner image has been transferred. The print medium includes a polymer compound.

A pressure-printed material preparing apparatus includes an attachment unit that attaches, powder which exhibits adhesiveness when pressure is applied, to a surface to be bonded of a recording medium; a fixation unit that applies pressure to the recording medium to which the powder is attached to fix the powder to the recording medium as an adhesive layer; a folding unit that folds the recording medium of which the adhesive layer is formed on the surface to be bonded, such that two portions of the surface to be bonded are opposed to each other; and an application unit that applies pressure to the recording medium in which the surfaces to be bonded are opposed to each other, to thereby bond the adhesive layer on one surface and the adhesive layer on the other surface.

A pressure-printed material preparing apparatus includes an attachment unit that attaches, powder which exhibits adhesiveness when pressure is applied, to a surface to be bonded of a recording medium; a fixation unit that applies pressure to the recording medium to which the powder is attached to fix the powder to the recording medium as an adhesive layer; a folding unit that folds the recording medium of which the adhesive layer is formed on the surface to be bonded, such that two portions of the surface to be bonded are opposed to each other; and an application unit that applies pressure to the recording medium in which the surfaces to be bonded are opposed to each other, to thereby bond the adhesive layer on one surface and the adhesive layer on the other surface.

An image forming apparatus includes an image forming portion, a fixing portion configured to heat the toner image formed on the sheet by the image forming portion and fix the toner image to the sheet, a folding portion configured to fold the sheet having passed through the fixing portion such that a surface of the sheet to which the powder adhesive is applied is inside, and a bonding portion configured to heat the sheet folded by the folding portion and bond the sheet by the powder adhesive. A relationship of Tmax1>Tmax2 is satisfied, where Tmax1 (? C.) is a highest temperature of the powder adhesive when being heated by the fixing portion and Tmax2 (? C.) is a highest temperature of the powder adhesive when being heated by the bonding portion.

An image forming system includes an image forming apparatus and a sheet processing apparatus having a stacking unit, a moving unit, and a thermal compression bonding unit. The stacking unit includes a stack of plural sheet having an adhesive layer for bonding the plural sheets together. The thermal compression bonding unit includes a heating member having a heat generation area. In a case where a length of the adhesive layer regarding a longer-side direction of the heating member is greater than a length of the heat generation area, an entire area of the adhesive layer on the plural sheets is heated and pressed by applying heat and pressure to the adhesive layer more than once while changing, via the moving unit, a relative position of the plural sheets having been conveyed onto the stacking unit and the heat generation area regarding the longer-side direction of the heating member.

A medium processing apparatus includes a liquid applier and a post-processing device. The liquid applier includes a liquid application member including a foam containable a liquid to apply the liquid to a liquid application region in a part of at least one medium of a bundle of media. The post-processing device performs a given process on a post-processing region in the part of at least one medium having the liquid application region on which the liquid is applied by the liquid applier. The liquid applier applies the liquid to the liquid application region overlapped with at least a part of the post-processing region.

An image forming system includes an image forming unit that forms an image on a recording medium by using a color toner, an applying unit that applies a crimping toner having pressure-responsiveness onto at least a portion of a surface of the recording medium on which the image is formed, a heating unit that heats the crimping toner applied to the recording medium, and a pressurizing unit that pressurizes, in a thickness direction, a stacked body in which the recording medium is folded with the heated crimping toner interposed or a stacked body in which the recording medium and another medium are stacked with the heated crimping toner interposed, in which a volume average particle diameter of the crimping toner is more than a volume average particle diameter of the color toner.

The present disclosure relates to a sheet processing system allowing a user to easily remove a sheet from a sheet pressure bonding unit when a jam occurs. A control method for the sheet processing system includes conveying a sheet, pressurizing, for a predetermined time, a plurality of conveyed sheets by a pressurizing unit, detecting an occurrence of a jam of the conveyed sheet or sheets, and controlling the pressurizing unit to release a pressurized state by the pressurizing unit even if the predetermined time has not elapsed in a case where the occurrence of the jam is detected while the plurality of sheets is being pressurized.