摘要:
An image forming apparatus includes a transfer belt onto which an image is transferred, a roller around which the transfer belt is wound, a transfer roller that sandwiches the transfer belt with the belt driving roller, a transfer medium transporting unit, a guide portion, and a fixing unit. The transfer roller is arranged to form a transfer nip with the roller, and transfers the image from the transfer belt to a transfer medium. The transfer medium transporting unit vertically upwardly sucks the transfer medium, and transports the transfer medium with the image facing vertically down. The guide portion vertically upwardly sucks the transfer medium transported by the transfer medium transporting unit. The fixing unit has a heating roller and a pressing roller to form a fixing nip, and fixes the image guided by the guide at the fixing nip.
摘要:
A transfer device includes an image carrier that carries an image and a transfer roller having a recessed section, a transfer medium gripping member that is disposed in the recessed section and grips a transfer medium, and an elastic member that forms a transfer nip by abutting upon the image carrier, the transfer roller transferring the image carried by the image carrier to the transfer medium by abutting upon the image carrier. The transfer medium gripping member grips the transfer medium when the recessed section moves to a position of the transfer nip and the image carrier and the transfer roller do not contact to each other.
摘要:
An image forming device includes a developer carrier for carrying a liquid developer, a latent image carrier to which a latent image is developed by the developer carrier, a charging member for charging the latent image carrier, an exposure device for exposing the latent image carrier, a latent image carrier cleaning roller for applying a bias to clean the latent image carrier, a latent image carrier cleaning blade having contact with the latent image carrier and for scraping out the developer on the latent image carrier, and a cleaning process control section for cleaning the latent image carrier in a condition in which a charging bias of the charging member is applied, the developer carrier has contact with the latent image carrier, and the bias of the latent image carrier cleaning roller is applied to the latent image carrier cleaning roller.
摘要:
A transfer apparatus includes an image bearing unit, a transfer member and a bias generator. The image bearing unit is configured and arranged to bear an image. The transfer member is arranged with respect to the image bearing unit to form a nip portion therebetween. The transfer member includes a substrate and an elastic member. The substrate has a recessed portion with an opening width of the recessed portion being larger than a width of the nip portion as measured in a moving direction of the transfer member. The elastic member is fixed in the recessed portion and wound around the substrate. The elastic member has a volume resistivity of 1×106 to 1×1011 Ω·cm. The bias generator is configured and arranged to apply a bias electric field to the nip portion.
摘要:
An image formation apparatus includes: a developer retaining member that retains a liquid developer that contains toner particles and carrier liquid; a roller member that can be brought into contact with the developer retaining member at a position and distanced from the developer retaining member at another position; a cleaning blade that has a contact edge that is in contact with the roller member for cleaning the roller member; and a supporting member that supports the cleaning blade, wherein the cleaning blade has a first plane that is supported by the supporting member or is opposite to a surface that is supported by the supporting member and further has a second plane, the first plane and the second plane forming the contact edge, and an angle θ1 that is formed by a virtual vertical plane and the second plane thereunder when the roller member is distanced from the developer retaining member is greater than zero degree but not greater than ninety degree (0°
摘要:
An image forming apparatus includes: a photoconductor drum; a transfer belt wound around the photoconductor drum and configured to move in a first direction; and a transfer member configured to come into abutment with the photoconductor drum at an abutment position via the transfer belt, wherein the transfer belt comes into contact with the photoconductor drum at a first position and comes out of contact with the photoconductor drum at a second position, and a peripheral surface length of the photoconductor drum between the abutment position and the second position is larger than a peripheral surface length of the photoconductor drum between the first position and the abutment position.
摘要:
An image forming apparatus includes a photoconductor capable of bearing developer; a rotatable intermediate transfer member serving as an intermediate medium when transferring the developer on the photoconductor to a medium; a voltage supply section supplying to the intermediate transfer member a transfer voltage for letting the developer on the photoconductor advance to the intermediate transfer member at a primary transfer location; a secondary transfer member for transferring to the medium the developer that has moved to a secondary transfer location through rotation of the intermediate transfer member; a removal member arranged downstream from the secondary transfer location, with respect to a rotation direction of the intermediate transfer member, the removal member abutting against the intermediate transfer member and removing remaining developer remaining on the intermediate transfer member; and a controller that controls the voltage supply section, which does not cause the supply of the transfer voltage with the voltage supply section during the removal, with the removal member, of the remaining developer located upstream from the secondary transfer location, with respect to the rotation direction of the intermediate transfer member, and located between the primary transfer location and the secondary transfer location when a situation has arisen in which an image forming operation is stopped midway, in order to resume the image forming operation.
摘要:
An image-forming apparatus includes a transfer roller having a recessed portion in a circumferential surface; a driving portion for rotatably driving the transfer roller; an image carrier belt for carrying an image; a tension roller around which the image carrier belt is wound for making contact with the transfer roller interposed by the image carrier belt; a biasing portion for biasing the tension roller towards the transfer roller; and a position-regulating portion that, when the transfer roller rotates and the transfer roller and the image carrier belt make contact, causes a position to be maintained at which the image carrier belt wound around the tension roller intersects a virtual circumferential surface that is an extension of the circumferential surface of the transfer roller into the recessed portion.
摘要:
An image forming apparatus includes a latent image bearing unit, an exposure unit, a developing unit, a transfer medium, a transfer roller and a detecting unit. A latent image formed on the latent image bearing unit by an exposure unit is developed by the developing unit with a liquid developer, and a developed image on the latent image bearing unit is transferred to a transfer. The transfer roller includes a cylindrical portion with a concaved portion formed in an axis direction of a circumferential surface of the cylindrical portion, and a transfer material supporting member fixed in the concaved portion and wound around a circumferential surface of the cylindrical portion to support a transfer material. The detecting unit is configured and arranged to detect a rotation position of the transfer roller when the transfer medium and the transfer roller come into contact with each other with the transfer material being interposed therebetween.
摘要:
An image forming apparatus including a latent image bearing drum on which a latent image is formed, an exposure unit that exposes the latent image bearing drum, a developer unit that develops the latent image formed on the latent image bearing drum, a transfer medium onto which the image developed by the developer unit is transferred, and a transfer roller that transfers the image from the transfer medium to the transfer material, the transfer roller having a concaved portion extending in the axial direction and a support portion disposed on the outer circumference of the roller that supports the transfer material, where the outer circumference of the transfer roller being an integral multiple or an approximate integral multiple of the circumference of the latent image bearing drum.