Abstract: An image formation system includes an image forming apparatus for forming different color toner images on a recording material having a toner reception layer, a first heater for heating and pressing the toner image on the recording material, and a heater for heating and pressing the toner image on the recording material having been heated and pressed by the first heater. The first heater is operable so as to provide a granularity R of the toner image satisfying 0.5?R?4.0 and a glossiness G of the toner image satisfying 5?G?40, the second heater being operable so as to provide a granularity R of the toner image that is not more than 4.0 and a glossiness G of the toner image that is not less than 60.

Abstract: An image forming system includes an image forming portion for forming a transparent image on a sheet by using transparent toner; an obtaining portion for obtaining a size of the sheet on which an image is to be formed; a storing portion for storing image data, for forming the transparent image on an entire image formable area of the sheet with the transparent toner, for each of a plurality of predetermined sheets different in size from each other; and a control portion for controlling the image forming portion so that the transparent image is formed on the sheet on the basis of the image data corresponding to the size of the sheet obtained by the obtaining portion.

Abstract: An image forming system includes image forming means for forming toner images on toner receiving resin layers of respective sides of a recording material; fixing means for heat fixing the toner images on the recording material in a fixing nip; and smoothing means for smoothing the toner receiving resin layers of the recording material having the toner images formed by the fixing means; wherein the system is operable in an image formation mode in which the toner images formed on the respective sides of the recording material are fixed by the fixing means sequentially, and then the toner receiving resin layers of the recording material are smoothed by the smoothing means sequentially.

Abstract: An image forming apparatus includes an image forming portion for forming a toner image on a recording material with transparent toner containing a parting agent; a fixing portion for fixing the toner image formed on the recording material; an obtaining portion for obtaining information as to whether or not the recording material on which the toner image is to be formed has already been subjected to image formation; a selecting portion for selecting a mode to be executed from a first image forming mode in which the toner image depending on image data is formed on the recording material by the image forming portion and a second image forming mode in which the toner image is formed so that a whole surface of the recording material is coated in an image formable area with the transparent toner by the image forming portion; and control portion for controlling execution of the mode so that execution of the first image forming mode and execution of the second image forming mode are permitted when the information ind

Abstract: An image forming apparatus has a first toner image forming portion which forms a toner image at a recording material and heats the recording material at which the toner image is formed, a second toner image forming portion which forms a toner image at the recording material heated at the first toner image forming portion and heats the recording material to which the toner image is formed, and a preliminary heating member which heats the toner image on an image bearing member of the second image forming portion before the toner image is transferred to the recording material.

Abstract: An image forming system includes image forming means for forming toner images on toner receiving resin layers of respective sides of a recording material; fixing means for heat fixing the toner images on the recording material in a fixing nip; and smoothing means for smoothing the toner receiving resin layers of the recording material having the toner images formed by the fixing means; wherein the system is operable in an image formation mode in which the toner images formed on the respective sides of the recording material are fixed by the fixing means sequentially, and then the toner receiving resin layers of the recording material are smoothed by the smoothing means sequentially.

Abstract: In the case where a sheet on which a transparent toner image is to be formed has low glossiness, when the transparent toner image is formed in a area in which a user wishes to partly lower the glossiness, the glossiness in the area in which the user wishes to lower the glossiness is increased. For that reason, a print as desired by the user cannot be obtained by fixing the transparent toner image in an area corresponding to the area in which the user wishes to lower the glossiness. In the case where the sheet to be subjected to printing is judged as low glossy paper, the transparent toner image is placed in an image formable area except for the area in which the user wishes to lower the glossiness.

Abstract: In the case where a sheet on which a transparent toner image is to be formed has high glossiness, when the transparent toner image is formed in an area in which a user wishes to partly increase the glossiness, the glossiness in the area in which the user wishes to increase the glossiness is lowered. For that reason, a print as desired by the user cannot be obtained by fixing the transparent toner image in an area corresponding to the area in which the user wishes to increase the glossiness. In the case where the sheet to be subjected to printing is judged as highly glossy paper, the transparent toner image is placed in an image formable area except for the area in which the user wishes to increase the glossiness.

Abstract: A control apparatus configured to control an image forming system, in forming a transparent image so as to cover color images fixed on a sheet, applies a transparent toner on an area on which an image can be formed and which is other than an area that a user desires to increase the glossiness thereof.

Abstract: A control apparatus configured to control an image forming system, in forming a transparent toner on a sheet having color toners formed and fixed thereon, applies a transparent toner on an area on which an image can be formed and which is other than an area that a user desires to reduce the glossiness thereof.

Abstract: The present invention provides a glossing apparatus including first and second heating rotating members which contact each other to form a nip part, an toner image on a recording material being heated in the nip part; a cooling unit which cools the recording material, moved while contacting the first heating rotating member, before the recording material is separated from the first heating rotating member; and a mode performing unit which performs a high-gloss mode and a low-gloss mode, the recording material is conveyed to and heated by the nip part such that the toner image contact the first heating rotating member in the high-gloss mode, the recording material is conveyed to and heated by the nip part such that the toner image contact the second heating rotating member in the low-gloss mode.

Abstract: The present invention provides an image forming apparatus including a first toner image forming portion which forms a toner image at a recording material and heats the recording material at which the toner image is formed, a second toner image forming portion which forms a toner image at the recording material heated at the first toner image forming portion and heats the recording material to which the toner image is formed, and a preliminary heating member which heats the toner image on an image bearing member of the second image forming portion before the toner image is transferred to the recording material.

Abstract: An image formation system includes image forming means for forming different color toner images on a recording material having a toner reception layer; first image heating means for heating and pressing the toner image on the recording material; second image heating means for heating and pressing the toner image on the recording material having been heated and pressed by the first image heating means; and wherein the first image heating means is operable so as to provide a granularity R of the toner image satisfying 0.5?R?4.0 and a glossiness G of the toner image satisfying 5?G?40, and the second image heating means is operable so as to provide a granularity R of the toner image satisfying not more than 4.0 and a glossiness G of the toner image satisfying not less than 60.

Abstract: An image forming system includes an image forming portion for forming a transparent image on a sheet by using transparent toner; an obtaining portion for obtaining a size of the sheet on which an image is to be formed; a storing portion for storing image data, for forming the transparent image on an entire image formable area of the sheet with the transparent toner, for each of a plurality of predetermined sheets different in size from each other; and a control portion for controlling the image forming portion so that the transparent image is formed on the sheet on the basis of the image data corresponding to the size of the sheet obtained by the obtaining portion.

Abstract: An object of the present invention is to provide an image forming apparatus including a belt-shaped image bearing member; a first transfer member which abuts on the outer peripheral surface of the image bearing member; a second transfer member which abuts on an inner peripheral surface of the image bearing member; transfer electric field forming unit; a bending member which bends the image bearing member from the outer peripheral surface toward the inner peripheral surface on a downstream side of the transfer portion in a traveling direction of the image bearing member; a conductive member in which an electric field is formed with the bending member; and voltage applying unit which applies a voltage having a polarity opposite to the toner to the conductive member.

Abstract: The present invention provides a glossing apparatus including first and second heating rotating members which contact each other to form a nip part, an toner image on a recording material being heated in the nip part; a cooling unit which cools the recording material, moved while contacting the first heating rotating member, before the recording material is separated from the first heating rotating member; and a mode performing unit which performs a high-gloss mode and a low-gloss mode, the recording material is conveyed to and heated by the nip part such that the toner image contact the first heating rotating member in the high-gloss mode, the recording material is conveyed to and heated by the nip part such that the toner image contact the second heating rotating member in the low-gloss mode.

Abstract: An object of the present invention is to provide an image forming apparatus including a belt-shaped image bearing member; a first transfer member which abuts on the outer peripheral surface of the image bearing member; a second transfer member which abuts on an inner peripheral surface of the image bearing member; transfer electric field forming unit; a bending member which bends the image bearing member from the outer peripheral surface toward the inner peripheral surface on a downstream side of the transfer portion in a traveling direction of the image bearing member; a conductive member in which an electric field is formed with the bending member; and voltage applying unit which applies a voltage having a polarity opposite to the toner to the conductive member.

Abstract: The present invention relates to an image forming apparatus in which voltage is applied to an intermediate transfer body when a toner image is transferred from an image bearing body to the intermediate transfer body, and a controller controls variably a potential of a shadow portion of an electrostatic image so that a potential difference between the potential of the shadow portion and the voltage can be variable on the basis of a detected result of a detecting circuit.

Abstract: The present invention relates to an image forming apparatus in which voltage is applied to an intermediate transfer body when a toner image is transferred from an image bearing body to the intermediate transfer body, and control means controls variably a potential of a shadow portion of an electrostatic image so that a potential difference between the potential of the shadow portion and the voltage can be variable on the basis of a detected result of a detecting means.

Abstract: In a multiple-color image forming apparatus a voltage which is applied to the intermediate transfer member by the voltage applying device is constant-voltage-controlled, wherein there is a period when the image bearing member which is charged by the charger and on which no toner image is formed by the image forming device and the toner image which is transferred onto the intermediate transfer member exist at the transfer position, a detecting device for detecting a current that flows in the intermediate transfer member from the voltage applying device when the voltage is applied to the intermediate transfer member by the voltage applying device during the period, and a controller for controlling at least one of the voltage which is applied to the image bearing member by the charger and a voltage which is applied to the intermediate transfer member by the voltage applying device on the basis of a detection result by the detecting device.