JPS56149171A - Magnification conversion system of electronic printer - Google Patents

Magnification conversion system of electronic printer

Info

Publication number
JPS56149171A
JPS56149171A JP5256780A JP5256780A JPS56149171A JP S56149171 A JPS56149171 A JP S56149171A JP 5256780 A JP5256780 A JP 5256780A JP 5256780 A JP5256780 A JP 5256780A JP S56149171 A JPS56149171 A JP S56149171A
Authority
JP
Japan
Prior art keywords
pulse
oscillator
original
copy
nonmagnification
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
JP5256780A
Other languages
Japanese (ja)
Inventor
Junichi Daiko
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP5256780A priority Critical patent/JPS56149171A/en
Publication of JPS56149171A publication Critical patent/JPS56149171A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/387—Composing, repositioning or otherwise geometrically modifying originals
    • H04N1/393—Enlarging or reducing
    • H04N1/3935—Enlarging or reducing with modification of image resolution, i.e. determining the values of picture elements at new relative positions

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Editing Of Facsimile Originals (AREA)
  • Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Projection-Type Copiers In General (AREA)

Abstract

PURPOSE:To obtain a printed picture of desired size freely by a simple means, by enlarging or contracting a picture signal, outputted from an image sensor, in terms of time. CONSTITUTION:For a copy of nonmagnification, i.e., corresponding to original P1, controller 35 outputs nonmagnification setting signal M1. Consequently, a pulse from the 1st oscillator 31 is supplied to FF circuit 40. To take a copy of original P1 while contracting its size to half, controller 35 outputs two-power setting signal M2. Therefore, a pulse from the 2nd oscillator 32 is supplied to circuit 40. In this case, the oscillation frequency of oscillator 32 is set 2 times that of oscillator 31, so respective cycles of shift pulse phi1A-phi2B outputted from FF47, and reset pulse phiR and sampling pulse phiS outputted from AND gates 44 and 45 vary to 1/2 of those of nonmagnification. Thus, a hard copy of original P1 whose size is contracted to half is obtained. A copy enlarged to double-size original P1 is similarly obtained.
JP5256780A 1980-04-21 1980-04-21 Magnification conversion system of electronic printer Pending JPS56149171A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5256780A JPS56149171A (en) 1980-04-21 1980-04-21 Magnification conversion system of electronic printer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5256780A JPS56149171A (en) 1980-04-21 1980-04-21 Magnification conversion system of electronic printer

Publications (1)

Publication Number Publication Date
JPS56149171A true JPS56149171A (en) 1981-11-18

Family

ID=12918373

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5256780A Pending JPS56149171A (en) 1980-04-21 1980-04-21 Magnification conversion system of electronic printer

Country Status (1)

Country Link
JP (1) JPS56149171A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5038490A (en) * 1973-06-26 1975-04-09

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5038490A (en) * 1973-06-26 1975-04-09

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