Invention Grant
- Patent Title: Image reading device and image forming apparatus having selectively switchable reference surfaces
-
Application No.: US16253177Application Date: 2019-01-21
-
Publication No.: US10721365B2Publication Date: 2020-07-21
- Inventor: Hiroki Terauchi
- Applicant: Hiroki Terauchi
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company, Ltd.
- Current Assignee: Ricoh Company, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Duft & Bornsen, PC
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@4e1534a8
- Main IPC: H04N1/60
- IPC: H04N1/60 ; H04N1/00 ; G03G15/22

Abstract:
An image reading device includes a reader, an opposing member, and circuitry. The reader is configured to read an image of an object to be conveyed. The opposing member has a plurality of opposing portions that include reference surfaces selectively switchable to be placed at a reading position of the reader. The reference surfaces include two or more identical reference surfaces. The circuitry is configured to determine whether an evaluation reading value of reading values read by the reader on each of the two or more identical reference surfaces is within a prescribed range and perform correction operation of the image reading device with the evaluation reading value within the prescribed range out of the reading values of the two or more identical reference surfaces.
Public/Granted literature
- US20190230229A1 IMAGE READING DEVICE AND IMAGE FORMING APPARATUS Public/Granted day:2019-07-25
Information query