Abstract: An image forming apparatus includes: a plural image forming units configured to form respective toner images in different colors; an endless-shaped intermediate transfer member that is rotatable in a peripheral direction of the intermediate transfer member and to which the toner images are to be sequentially transferred from the plural image forming units; a moment-of-inertia-increasing structure provided to one of rotatable image carriers that are included in the respective image forming units, the moment-of-inertia-increasing structure increasing a moment of inertia of the one image carrier relative to moments of inertia of other ones of the image carriers, the one image carrier being included in one of the image forming units that is located at a downstreammost position in a direction of rotation of the intermediate transfer member, the image carriers being in contact with the intermediate transfer member and configured to carry the respective toner images; a plural first-transfer units provided at positio

Abstract: An image forming apparatus includes plural image forming units configured to form respective toner images in different colors; an endless-shaped intermediate transfer member that is to move in a peripheral direction of the intermediate transfer member and to which the toner images are to be sequentially transferred from the plural image forming units; plural first-transfer units provided across from the respective image forming units and configured to transfer the toner images formed by the image forming units to the intermediate transfer member; a second-transfer unit provided on a downstream side relative to the plural first-transfer units in a direction of movement of the intermediate transfer member and configured to transfer the toner images on the intermediate transfer member to a medium; and a holding unit provided, in the direction of movement of the intermediate transfer member, between a downstreammost one of the first-transfer units and the second-transfer unit, the holding unit being configured to

Abstract: An image forming apparatus includes: an image carrier that extends in a first direction; a light emitter that includes a substrate that extends in the first direction, and multiple light-emitting devices that are disposed on the substrate and emit light to the image carrier; a positioning portion that is disposed between the substrate and the image carrier, and that fixes a position of the light emitter with respect to the image carrier in at least one direction perpendicular to a light emission direction; and an adjuster that is located to overlap the positioning portion when viewed in the first direction, and that adjusts a position of the light emitter in the light emission direction.

Abstract: An exposure device includes: at least one light emitter that includes a substrate and a light-emitting device disposed on the substrate; and a position adjuster that includes a contact member having an outer periphery in contact with the substrate, a support member that rotatably supports the contact member, and at least one mover that is in contact with the support member to move the support member in a light emission direction of the light emitter.

Abstract: An image forming apparatus includes: an image carrier that extends in a first direction; a light emitter that includes a substrate that extends in the first direction, and multiple light-emitting devices that are disposed on the substrate and emit light to the image carrier; a positioning portion that is disposed between the substrate and the image carrier, and that fixes a position of the light emitter with respect to the image carrier in at least one direction perpendicular to a light emission direction; and an adjuster that is located to overlap the positioning portion when viewed in the first direction, and that adjusts a position of the light emitter in the light emission direction.

Abstract: An image forming apparatus includes a first image forming unit including a rotatable first image carrier and a first light-emitting unit, the first light-emitting unit including a first base member and plural first light-emitting devices, the first base member extending in an axial direction of the first image carrier, the plural first light-emitting devices being provided on the first base member and being configured to apply light to an outer circumferential surface of the first image carrier; and a second image forming unit including a rotatable second image carrier and a second light-emitting unit, the second light-emitting unit including a second base member and plural second light-emitting devices, the second base member extending in an axial direction of the second image carrier, the plural second light-emitting devices being provided on the second base member and being configured to apply light to an outer circumferential surface of the second image carrier.

Abstract: An image forming apparatus includes: a rotatable image carrier on an outer circumferential surface of which an image is to be formed and that is movable in a rotation axis direction between an image forming position and a maintenance position; a light-emitting unit including a base member extending in the rotation axis direction of the image carrier, and plural light-emitting devices provided on the base member and configured to apply light to the outer circumferential surface of the image carrier, the light-emitting unit being configured to move together with the image carrier in the rotation axis direction; and a supporting unit configured to move together with the image carrier in the rotation axis direction and to support the light-emitting unit when the image carrier and the light-emitting unit are at the maintenance position and the light-emitting unit is disabled from being positioned with respect to the image carrier.

Abstract: An exposure device includes: at least one light emitter that includes a substrate and a light-emitting device disposed on the substrate; and a position adjuster that includes a contact member having an outer periphery in contact with the substrate, a support member that rotatably supports the contact member, and at least one mover that is in contact with the support member to move the support member in a light emission direction of the light emitter.