Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
PHOTOELECTRIC CONVERSION ELEMENT, IMAGE READING DEVICE, AND IMAGE FORMING APPARATUS
Document Type and Number:
Japanese Patent JP2016082391
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To reduce a fixed pattern noise while ensuring a necessary response speed.SOLUTION: A photoelectric conversion element includes: a light receiving element that generates a charge according to the amount of received light; a buffer part that buffers a voltage signal according to the charge generated by the light receiving element and outputs the voltage signal; a current control circuit that controls a current flowing in the buffer part to be a predetermined current amount when the buffer part outputs the voltage signal; and an elimination circuit that eliminates a high frequency component of a predetermined bandwidth or higher from the voltage signal output from the buffer part.SELECTED DRAWING: Figure 8

Inventors:
NAKAZAWA MASAMOTO
KANNO TORU
Application Number:
JP2014211891A
Publication Date:
May 16, 2016
Filing Date:
October 16, 2014
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
RICOH CO LTD
International Classes:
H04N1/028; H01L27/146; H01L31/10; H04N5/365; H04N5/3745
Domestic Patent References:
JP2003258228A2003-09-12
JPH04345283A1992-12-01
JPH089262A1996-01-12
JP2006211363A2006-08-10
JP2009195461A2009-09-03
Attorney, Agent or Firm:
Hiroaki Sakai