Abstract:
According to one embodiment, a fuser includes a heat roller, an endless belt, a first press roller and a second press roller. The heat roller rotates and contacts a toner surface side of a sheet, and heats the sheet. The endless belt contacts a part of an outer peripheral surface of the heat roller. The first press roller contacts a part of an inner peripheral surface of the endless belt, and is provided at an insertion part of the sheet in a nip portion where the heat roller contacts the endless belt. The second press roller contacts a part of the inner peripheral surface of the endless belt, is provided at an exit part of the sheet in the nip portion, and has a lower rotational resistance than the first press roller.
Abstract:
According to one embodiment, a fixing device includes determination means for determining the size of a medium, heating means for including plural heat-generating members which are two-dimensionally arranged such that the heat-generating members are lined up along two parallel lines or more which are vertical to a transport direction of the medium and divided at locations on the parallel lines, and are disposed so as to come into contact with an inner side of the rotating body, and a switching unit which switches individual conduction, and heats the medium, pressing means for forming a nip by performing pressing and contact at a position of the plural heat-generating members, and heating control means for selecting a group of the heat-generating members which are lined up in the two-dimensional arrangement, conducting the selected group of the heat-generating members, and controlling the heating means.
Abstract:
According to one embodiment, a fuser includes a heat roller, an endless belt, a first press roller and a second press roller. The heat roller rotates and contacts a toner surface side of a sheet, and heats the sheet. The endless belt contacts a part of an outer peripheral surface of the heat roller. The first press roller contacts a part of an inner peripheral surface of the endless belt, and is provided at an insertion part of the sheet in a nip portion where the heat roller contacts the endless belt. The second press roller contacts a part of the inner peripheral surface of the endless belt, is provided at an exit part of the sheet in the nip portion, and has a lower rotational resistance than the first press roller.
Abstract:
According to one embodiment, a fixing device includes determination means for determining the size of a medium, heating means for including plural heat-generating members which are two-dimensionally arranged such that the heat-generating members are lined up along two parallel lines or more which are vertical to a transport direction of the medium and divided at locations on the parallel lines, and are disposed so as to come into contact with an inner side of the rotating body, and a switching unit which switches individual conduction, and heats the medium, pressing means for forming a nip by performing pressing and contact at a position of the plural heat-generating members, and heating control means for selecting a group of the heat-generating members which are lined up in the two-dimensional arrangement, conducting the selected group of the heat-generating members, and controlling the heating means.
Abstract:
According to one embodiment, a fixing device includes determination means for determining the size of a medium, heating means for including plural heat-generating members which are two-dimensionally arranged such that the heat-generating members are lined up along two parallel lines or more which are vertical to a transport direction of the medium and divided at locations on the parallel lines, and are disposed so as to come into contact with an inner side of the rotating body, and a switching unit which switches individual conduction, and heats the medium, pressing means for forming a nip by performing pressing and contact at a position of the plural heat-generating members, and heating control means for selecting a group of the heat-generating members which are lined up in the two-dimensional arrangement, conducting the selected group of the heat-generating members, and controlling the heating means.
Abstract:
An image forming apparatus includes a photoreceptor, an exposure unit having a plurality of light emitting elements that are configured to emit light corresponding to an image to be formed towards the photoreceptor, a developing unit containing toner that is transferred to the photoreceptor therefrom, and a control unit configured to control a potential of the developing unit. The control unit is configured to control the potential of the developing unit, such that the toner is selectively transferred to a region of the photoreceptor that has received light of an intensity that is greater than a predetermined value. The predetermined value is equal to or greater than 40% and equal to or smaller than 60% of an average peak intensity of the plurality of the light emitting elements that are driven with a maximum current value.
Abstract:
According to one embodiment, a fixing device includes determination means for determining the size of a medium, heating means for including plural heat-generating members which are two-dimensionally arranged such that the heat-generating members are lined up along two parallel lines or more which are vertical to a transport direction of the medium and divided at locations on the parallel lines, and are disposed so as to come into contact with an inner side of the rotating body, and a switching unit which switches individual conduction, and heats the medium, pressing means for forming a nip by performing pressing and contact at a position of the plural heat-generating members, and heating control means for selecting a group of the heat-generating members which are lined up in the two-dimensional arrangement, conducting the selected group of the heat-generating members, and controlling the heating means.
Abstract:
According to one embodiment, an image forming apparatus includes an image bearing member on which an electrostatic latent image is formed by exposure, an exposing device including a plurality of light sources and a plurality of lenses, which are provided along a longitudinal direction of the image bearing member, and configured to radiate light on the image bearing member, and a developing device arranged at a fixed distance apart from the image bearing member and configured to develop, according to application of a direct-current bias, the electrostatic latent image formed on the image bearing member into a visible image using a two-component developer.
Abstract:
According to one embodiment, a fixing device includes determination means for determining the size of a medium, heating means for including plural heat-generating members which are two-dimensionally arranged such that the heat-generating members are lined up along two parallel lines or more which are vertical to a transport direction of the medium and divided at locations on the parallel lines, and are disposed so as to come into contact with an inner side of the rotating body, and a switching unit which switches individual conduction, and heats the medium, pressing means for forming a nip by performing pressing and contact at a position of the plural heat-generating members, and heating control means for selecting a group of the heat-generating members which are lined up in the two-dimensional arrangement, conducting the selected group of the heat-generating members, and controlling the heating means.
Abstract:
According to one embodiment, a fuser includes a fixing belt including a conductive layer, an induction-current generating section to electromagnetically induction-heat the conductive layer, an opposed section to form a nip in cooperation with the fixing belt, an auxiliary heat generating section electromagnetically induction-heated by the induction-current generating section, and a moving section to move the auxiliary heat generating section with respect to the fixing belt.