JPS5784663A - Manual sub-scanning type reader - Google Patents

Manual sub-scanning type reader

Info

Publication number
JPS5784663A
JPS5784663A JP55161501A JP16150180A JPS5784663A JP S5784663 A JPS5784663 A JP S5784663A JP 55161501 A JP55161501 A JP 55161501A JP 16150180 A JP16150180 A JP 16150180A JP S5784663 A JPS5784663 A JP S5784663A
Authority
JP
Japan
Prior art keywords
original plane
reader
floating
schmitt trigger
operator
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
JP55161501A
Other languages
Japanese (ja)
Inventor
Yojiro Sato
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP55161501A priority Critical patent/JPS5784663A/en
Publication of JPS5784663A publication Critical patent/JPS5784663A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/10544—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum
    • G06K7/10821—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum further details of bar or optical code scanning devices
    • G06K7/10881—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum further details of bar or optical code scanning devices constructional details of hand-held scanners

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Image Input (AREA)
  • Facsimile Scanning Arrangements (AREA)

Abstract

PURPOSE:To repeat the read-in operation for the operator, by providing a Schmitt trigger circuit and informing it the operator immediately when the reader is floated to a permissible range or more from the original plane. CONSTITUTION:A reflected light from an original plane is formed on a photo electric conversion plane of an image sensor IS via an optical system L. The image sensor IS transmits a video signal based on a timing pulse every time when a reader moves to a sub-scanning direction Y with a specified interval. When a machine body 1 is located on an original plane, the state of floating of the device body from the original plane is detected at a means PC, the output of which corresponds to the Schmitt trigger level. An output signal So from a Schmitt trigger circuit ST is made to the state of high level with almost zero of floating state of the reader from the original plane, and when the floating amount reaches a limit value of the depth of objective of the image forming optical system after being increased from the zero floating amount gradually, the level changes from high to low level, and this is displayed to the operator.
JP55161501A 1980-11-17 1980-11-17 Manual sub-scanning type reader Pending JPS5784663A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55161501A JPS5784663A (en) 1980-11-17 1980-11-17 Manual sub-scanning type reader

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55161501A JPS5784663A (en) 1980-11-17 1980-11-17 Manual sub-scanning type reader

Publications (1)

Publication Number Publication Date
JPS5784663A true JPS5784663A (en) 1982-05-27

Family

ID=15736262

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55161501A Pending JPS5784663A (en) 1980-11-17 1980-11-17 Manual sub-scanning type reader

Country Status (1)

Country Link
JP (1) JPS5784663A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3422120A1 (en) * 1983-06-15 1984-12-20 Canon K.K., Tokio/Tokyo IMAGE READER

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3422120A1 (en) * 1983-06-15 1984-12-20 Canon K.K., Tokio/Tokyo IMAGE READER

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