JPH03130583U - - Google Patents

Info

Publication number

JPH03130583U

JPH03130583U JP4057490U JP4057490U JPH03130583U JP H03130583 U JPH03130583 U JP H03130583U JP 4057490 U JP4057490 U JP 4057490U JP 4057490 U JP4057490 U JP 4057490U JP H03130583 U JPH03130583 U JP H03130583U

Authority

JP

Japan

Prior art keywords

light

photo sensor

detection area

conveyance path

emitting element

Prior art date

1990-04-16

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 5
• 230000001681 protective effect Effects 0.000 claims description 2
• 230000003287 optical effect Effects 0.000 claims 1
• 238000010586 diagram Methods 0.000 description 2
• 230000035945 sensitivity Effects 0.000 description 1

Cited By (2)