JPH01160767U - - Google Patents

Info

Publication number

JPH01160767U

JPH01160767U JP5751688U JP5751688U JPH01160767U JP H01160767 U JPH01160767 U JP H01160767U JP 5751688 U JP5751688 U JP 5751688U JP 5751688 U JP5751688 U JP 5751688U JP H01160767 U JPH01160767 U JP H01160767U

Authority

JP

Japan

Prior art keywords

reading mode

document reading

document

optical system

reference surface

Prior art date

1988-04-28

Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)

Pending

Links

• Espacenet
• Global Dossier
• Discuss

• 230000003287 optical effect Effects 0.000 claims description 3
• 238000003705 background correction Methods 0.000 claims description 2
• 238000010586 diagram Methods 0.000 description 3
• 238000006243 chemical reaction Methods 0.000 description 1
• 230000003252 repetitive effect Effects 0.000 description 1