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:
Sep. 04, 2007
Filed:
Sep. 29, 2003
Byeong-hwa Ahn, Yongin, KR;
Young-min Yoon, Yongin, KR;
Seung-yoon Lee, Suwon, KR;
Se-hyun Lyu, Seoul, KR;
Byeong-hwa Ahn, Yongin, KR;
Young-min Yoon, Yongin, KR;
Seung-yoon Lee, Suwon, KR;
Se-hyun Lyu, Seoul, KR;
Samsung Electronics Co., Ltd., Suwon-Si, KR;
Abstract
A voltage supply device for developing devices of a color image forming apparatus has a printed circuit board (PCB) connected with a high voltage supply source, a plurality of fixed contact point terminals provided at one end of the respective color developing devices, and a plurality of voltage changeover units for selectively connecting the PCB and the fixed contact point terminals to selectively supply the voltage from the high voltage supply source to the respective color developing devices. With the voltage supply device, contact point changeover is enabled without having to move the developing device, by using a relay part of a relatively simple structure during the change of developing device. Accordingly, deterioration of printing quality due to shock from the contact with the developing device is avoided, and the reliability of high voltage contact point changeover is improved. Further, the number of high voltage wiring harness, which is required for supplying voltage from the high voltage supply source to the developing devices, can be reduced.