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:
May. 31, 2005
Filed:
Jun. 21, 2002
Masamitsu Sakuma, Hirakata, JP;
Katsumi Adachi, Nara, JP;
Taisuke Kamimura, Nara, JP;
Kiyoshi Toizumi, Nara, JP;
Toshimitsu Gotoh, Yamatokoriyama, JP;
Masamitsu Sakuma, Hirakata, JP;
Katsumi Adachi, Nara, JP;
Taisuke Kamimura, Nara, JP;
Kiyoshi Toizumi, Nara, JP;
Toshimitsu Gotoh, Yamatokoriyama, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
On surfaces of insulating layersandof a transportation member, a protective layerhaving a volume resistivity of 10Ω·cm to 10Ω·cm is so laminated that a sum of thickness of the insulating layersandis less than intervals between adjacent ones of progressive wave generating electrodes. With this arrangement, it is ensured that a progressive wave electric field generated by the progressive wave generating electrodesis exposed beyond a surface of the transportation member. Even if developer T and the transportation membercontact each other, a surface potential of the transportation memberis not changed. Moreover, firm adhering of the toner T to the surface of the transportation memberis prevented. It is therefore possible to certainly transport the developer T to a development position always stably.