Patent Number: 7,356,282

Title: Image forming apparatus having transfer roller guided by guide device fixed on image carrier support structure and process cartridge having the guide device

Abstract: An image forming apparatus including an image carrier for carrying an image formed of a developing agent, a transfer roller disposed adjacent to the image carrier and having a roller shaft and a roller portion formed on the roller shaft to transfer the image of the developing agent from the image carrier onto a recording medium, a support structure supporting the image carrier and the transfer roller such that the image carrier and the transfer roller are removable together from a main body of the apparatus, a guide portion disposed on the support structure, to guide the roller shaft in a guiding direction toward and away from the image carrier, and a biasing device for abutting contact with the roller shaft to bias the roller shaft toward the image carrier. Also disclosed in a process cartridge including a housing structure supporting the image carrier and the transfer roller and provided with the guiding device, wherein the roller shaft is biased toward the image carrier by the biasing device.

Inventors: Deguchi; Hideaki (Nagoya, JP)

Assignee: Brother Kogyo Kabushiki Kaisha

International Classification: G03G 15/00 (20060101)

Expiration Date: 2020-04-08 0:00:00