JPS57211671A - Optical mark reader - Google Patents

Optical mark reader

Info

Publication number
JPS57211671A
JPS57211671A JP56097969A JP9796981A JPS57211671A JP S57211671 A JPS57211671 A JP S57211671A JP 56097969 A JP56097969 A JP 56097969A JP 9796981 A JP9796981 A JP 9796981A JP S57211671 A JPS57211671 A JP S57211671A
Authority
JP
Japan
Prior art keywords
article
wave
passage
limiting
quality
Prior art date
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
Application number
JP56097969A
Other languages
Japanese (ja)
Inventor
Hiroyuki Miyazaki
Kazuhisa Shirokabe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP56097969A priority Critical patent/JPS57211671A/en
Publication of JPS57211671A publication Critical patent/JPS57211671A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K13/00—Conveying record carriers from one station to another, e.g. from stack to punching mechanism
    • G06K13/02—Conveying record carriers from one station to another, e.g. from stack to punching mechanism the record carrier having longitudinal dimension comparable with transverse dimension, e.g. punched card
    • G06K13/06—Guiding cards; Checking correct operation of card-conveying mechanisms
    • G06K13/067—Checking presence, absence, correct position, or moving status of cards

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)

Abstract

PURPOSE:To detect the passage of an article surely without limiting the form and the quality of the article, by detecting the article by an acoustic pulse reflective detector in an optical reader where the radiation of light beams is controlled by the signal from a device for detection of the passage of the article. CONSTITUTION:An article 1 is moved in the direction of an arrow. An acoustic pulse reflective detector consists of wave transmitters 20a and 21a and wave receivers 20b and 21b. When the article 1 comes near that part above the line connecting the wave transmitter 20a (21a) and the wave receiver 20b (21b), acoustic pulses are reflected and reach the wave receiver 20b (21b). In this case, the article is always surely detected without limiting its shape and quality.
JP56097969A 1981-06-23 1981-06-23 Optical mark reader Pending JPS57211671A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56097969A JPS57211671A (en) 1981-06-23 1981-06-23 Optical mark reader

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56097969A JPS57211671A (en) 1981-06-23 1981-06-23 Optical mark reader

Publications (1)

Publication Number Publication Date
JPS57211671A true JPS57211671A (en) 1982-12-25

Family

ID=14206492

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56097969A Pending JPS57211671A (en) 1981-06-23 1981-06-23 Optical mark reader

Country Status (1)

Country Link
JP (1) JPS57211671A (en)

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