JPS56161574A - Formation of magnetic latent image - Google Patents

Formation of magnetic latent image

Info

Publication number
JPS56161574A
JPS56161574A JP6404780A JP6404780A JPS56161574A JP S56161574 A JPS56161574 A JP S56161574A JP 6404780 A JP6404780 A JP 6404780A JP 6404780 A JP6404780 A JP 6404780A JP S56161574 A JPS56161574 A JP S56161574A
Authority
JP
Japan
Prior art keywords
magnetic
laser beam
sheet
irradiated
modulating
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
JP6404780A
Other languages
Japanese (ja)
Inventor
Masaaki Nomura
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 JP6404780A priority Critical patent/JPS56161574A/en
Publication of JPS56161574A publication Critical patent/JPS56161574A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G19/00—Processes using magnetic patterns; Apparatus therefor, i.e. magnetography

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)

Abstract

PURPOSE:To improve reproduced image density and resolution by subjecting a magnetic recording medium to digital magnetization, modulating a laser beam in accordance with image information, irradiating this beam onto the magnetized medium and demagnetizing the irradiated part. CONSTITUTION:A magnetic recording sheet 1 formed with a magnetic layer 2 of low curie point such as CrO2 on a base 3 is mounted on a cylinder or the like, and while it is being rotated in the direction of an arrow A, the magnetic field of which the direction inverts and changes digitally is acted upon the gap 5a of a magnetic head 5, whereby the sheet is subjected to digital inversion magnetization 4 in the direction shown by arrows. Next, the signal S obtained by inputting the image signal Vs to a signal processor 10 and modulating the same is inputted an optical modulator 13 for a laser beam 12, and the laser beam 12' modulated by this is focused by a lens 14, whereby the irradiated area D of the magnetic layer 2 is formed. The sheet 3 is irradiated while being run in the arrow P direction. In this way, the magnetic images are formed in the area C which has not been heated above the curie point by the laser beam 12', and the reproduced images are obtained by the magnetic toner or the like.
JP6404780A 1980-05-16 1980-05-16 Formation of magnetic latent image Pending JPS56161574A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6404780A JPS56161574A (en) 1980-05-16 1980-05-16 Formation of magnetic latent image

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6404780A JPS56161574A (en) 1980-05-16 1980-05-16 Formation of magnetic latent image

Publications (1)

Publication Number Publication Date
JPS56161574A true JPS56161574A (en) 1981-12-11

Family

ID=13246788

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6404780A Pending JPS56161574A (en) 1980-05-16 1980-05-16 Formation of magnetic latent image

Country Status (1)

Country Link
JP (1) JPS56161574A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06265711A (en) * 1993-03-15 1994-09-22 Agency Of Ind Science & Technol Fine surface shape generating method and magnetic latent image forming device
JPH0777605A (en) * 1993-09-09 1995-03-20 Agency Of Ind Science & Technol Production of optical spot array element
US5707754A (en) * 1995-01-26 1998-01-13 Sharp Kabushiki Kaisha Magnetic recording medium and thermal recording printing device adopting the same
US5981039A (en) * 1996-08-30 1999-11-09 Sharp Kabushiki Kaisha Magnetic recording medium and a manufacturing method thereof as well as a photo-printing apparatus using such a magnetic recording medium

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06265711A (en) * 1993-03-15 1994-09-22 Agency Of Ind Science & Technol Fine surface shape generating method and magnetic latent image forming device
JPH0777605A (en) * 1993-09-09 1995-03-20 Agency Of Ind Science & Technol Production of optical spot array element
US5707754A (en) * 1995-01-26 1998-01-13 Sharp Kabushiki Kaisha Magnetic recording medium and thermal recording printing device adopting the same
US5981039A (en) * 1996-08-30 1999-11-09 Sharp Kabushiki Kaisha Magnetic recording medium and a manufacturing method thereof as well as a photo-printing apparatus using such a magnetic recording medium

Similar Documents

Publication Publication Date Title
EP0037426B1 (en) Magnetic transfer recording method
SE8001026L (en) SET AND DEVICE FOR MEDIUM LASER ASTADKOMMA PRINTING PLATES
US3737589A (en) Recording mechanically reproducible high frequency signals on recording carriers
ATE65860T1 (en) MAGNETO-OPTIC RECORDER.
JPS55129909A (en) Thermomagnetic recording and reproducing device
BR9004532A (en) READING RECORDING PROCESS BY OPTIONAL INFORMATION AND APPARATUS FOR ITS PERFORMANCE
ATE172048T1 (en) MAGNETOPTICAL INFORMATION RECORDING AND PLAYBACKING DEVICE
JPS5769541A (en) Recording medium and recording and reproducing system using sand medium
JPS56161574A (en) Formation of magnetic latent image
US5128893A (en) Electrostatic latent image recording/reproducing device
US4060811A (en) Magnetic latent image creation
GB1509495A (en) Record disc and method of producing the same
JPS55129908A (en) Thermomagnetic recording and reproducing device
US4427987A (en) Magnetic latent image forming apparatus
JPS56161572A (en) Formation of magnetic latent image
JPS56161573A (en) Formation of magnetic latent image
JPS57158038A (en) Magnetic transfer recorder
JPS5619056A (en) Method and apparatus for scanning and recording printed dot image
JPS5616917A (en) Thermal and magnetic recorder
US4163979A (en) Method and apparatus for recording latent images on a magnetic medium in magnetography
JPS5894137A (en) Magnetic transferring recorder
JPS57158039A (en) Magnetic transfer recorder
JPS56151974A (en) Formation of magnetic latent image
JPS5796371A (en) Recording method
JPS6025003A (en) Opto-magnetic recording device