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:
Apr. 18, 1995
Filed:
Jun. 28, 1993
Tohru Kanno, Natori, JP;
Yasuyuki Shindoh, Natori, JP;
Noriyuki Terao, Natori, JP;
Takeshi Nanjo, Natori, JP;
Atsuhiro Ohizumi, Natori, JP;
Yutaka Maita, Natori, JP;
Ricoh Company, Ltd., Tokyo, JP;
Ricoh Research Institute of General Electronics Co., Ltd., Natori, JP;
Abstract
A photoelectric transfer device includes at least one photoelectric transfer cell having the following elements: A photoelectric transfer element generates a photoelectric current based on a quantity of incident light. An amplifier element includes first FET and functions as a source follower in which a source voltage of the first FET is varied so as to follow up a gate voltage thereof. A read unit outputs, as an output signal, the source voltage of the source follower. The photoelectric transfer element is connected to a gate and source of the amplifier element so that a voltage between the gate and source of the amplifier element is applied across the photoelectric transfer element.