JPH0479353U - - Google Patents

Info

Publication number

JPH0479353U

JPH0479353U JP12213990U JP12213990U JPH0479353U JP H0479353 U JPH0479353 U JP H0479353U JP 12213990 U JP12213990 U JP 12213990U JP 12213990 U JP12213990 U JP 12213990U JP H0479353 U JPH0479353 U JP H0479353U

Authority

JP

Japan

Prior art keywords

image reading

document

image

white

area

Prior art date

1990-11-21

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

• 238000001514 detection method Methods 0.000 claims description 6
• 238000005286 illumination Methods 0.000 claims description 3
• 238000010586 diagram Methods 0.000 description 1
• 239000011521 glass Substances 0.000 description 1
• 238000003384 imaging method Methods 0.000 description 1