The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 13, 2004
Filed:
Oct. 16, 2002
Hyung-jin Ahn, Gyeonggi-do, KR;
Samsung Electronics Co., Ltd., Suwon-si, KR;
Abstract
An apparatus for forming a color image using electrophotography includes a photosensitive drum on which a predetermined electrostatic latent image is formed, a plurality of developing units including a developing roller supplying toner to a surface of the photosensitive drum to develop the electrostatic latent image, and pressure cams sequentially or selectively pressing corresponding ones of the developing units toward the photosensitive drum when the electrostatic latent image is developed. A bracket slide disposed in the apparatus uses tension springs to generate the same normal force in a predetermined range regardless of relative positions of the developing units, and the same normal force are applied to the photosensitive drum from the respective developing rollers while reducing a shock occurring when the developing roller contacts the photosensitive drum.