Image forming apparatus
AssigneesKabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
InventorNorio KOUZU
Life of this patent
Estimating the term…
Abstract
In accordance with one embodiment, an image forming apparatus includes an image forming section and a transfer roller. A support body supports the image carrier in a main body opposite to the transfer roller. A holding member positioned in the support body holds the transfer roller. The holding member includes at least one groove in a portion of the holding member that holds the transfer roller. At least one conductive member is positioned in, and protruding from, the at least one groove so that a part of the conductive member makes electrical contact with the transfer roller when the transfer roller is held in the holding member. A power supply section applies transfer bias between the image carrier and the transfer roller through the conductive member.
Claims20
An image forming apparatus, comprising:
- an image forming section configured to form an image on an image carrier;
- a transfer roller configured to transfer the image formed on the image carrier to an image receiving medium;
- a support body configured to support the image carrier in a main body opposite to the transfer roller;
- a holding member positioned in the support body and configured to hold the transfer roller, the holding member including at least one groove in a portion of the holding member that holds the transfer roller;
- at least one conductive member positioned in, and protruding from, the at least one groove so that a part of the conductive member makes electrical contact with the transfer roller when the transfer roller is held in the holding member;
- and
- a power supply section configured to apply transfer bias between the image carrier and the transfer roller through the conductive member.
In an image forming apparatus having a main body including an image carrier, a transfer roller, a support body that supports the image carrier, and a holding member arranged in the support body that holds the transfer roller opposite the image carrier, a method of applying transfer bias to the image carrier and to the transfer roller, said method comprising:
- applying bias voltage from a voltage source to a rotation shaft of a driving roller for the image carrier;
- and
- electrically connecting a rotation shaft of the transfer roller to a ground point through a conductive member positioned in, and protruding from, a groove of a portion of the holding member that holds the transfer roller, the conductive member making electrical contact with the transfer roller when the transfer roller is held the holding member.
In an image forming apparatus having a main body including an image carrier, a transfer roller, a support body that supports the image carrier, and a holding member arranged in the support body that holds the transfer roller opposite the image carrier, a method of applying transfer bias to the image carrier and to the transfer roller, said method comprising:
- applying bias voltage from a voltage source to a rotation shaft of the transfer roller through a conductive member positioned in, and protruding from, a groove of a portion of the holding member that holds the transfer roller, the conductive member making electrical contact with the transfer roller when the transfer roller is held the holding member;
- and
- electrically connecting a rotation shaft of a driving roller for the image carrier to a ground point.
Dependencies are inferred from the claim text.