JPS54113342A - Direct recording device - Google Patents

Direct recording device

Info

Publication number
JPS54113342A
JPS54113342A JP2052578A JP2052578A JPS54113342A JP S54113342 A JPS54113342 A JP S54113342A JP 2052578 A JP2052578 A JP 2052578A JP 2052578 A JP2052578 A JP 2052578A JP S54113342 A JPS54113342 A JP S54113342A
Authority
JP
Japan
Prior art keywords
electrode
image density
potential
electric lines
shield electrode
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
JP2052578A
Other languages
Japanese (ja)
Inventor
Yoshitaka Fujikawa
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 JP2052578A priority Critical patent/JPS54113342A/en
Publication of JPS54113342A publication Critical patent/JPS54113342A/en
Pending legal-status Critical Current

Links

Landscapes

  • Dot-Matrix Printers And Others (AREA)
  • Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
  • Electrophotography Using Other Than Carlson'S Method (AREA)
  • Combination Of More Than One Step In Electrophotography (AREA)

Abstract

PURPOSE:To reproduce a half tone and to improve the reliability, without any use of optical coupling means, by changing the potential at a shield electrode and by changing the potential difference between the shield electrode and a shaping electrode. CONSTITUTION:A shaping electrode 2 is enclosed through an insulator 9 by a shield electrode 10, which is not grounded to the earth but is supplied with an image density signal from an image density control unit 8. Among the electric lines 11 of force from the electrode 2, the lines generated from the side terminate at the electrode 10 to exhibit the converging effect of the electric lines. The potential according to an image density to be recorded is applied from the control unit 8, while being free from being maintained at a constant potential, so that the extent of transverse extension of the electric lines 11 generated from the electrode 2 is controlled. By supplying a shield electrode 3 with the potential according to the image density to be recorded, the number of the electric lines through the surface of recording paper 4 is so controlled that the image density to be formed on the paper surface is varied to reproduce the half tone.
JP2052578A 1978-02-24 1978-02-24 Direct recording device Pending JPS54113342A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2052578A JPS54113342A (en) 1978-02-24 1978-02-24 Direct recording device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2052578A JPS54113342A (en) 1978-02-24 1978-02-24 Direct recording device

Publications (1)

Publication Number Publication Date
JPS54113342A true JPS54113342A (en) 1979-09-04

Family

ID=12029565

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2052578A Pending JPS54113342A (en) 1978-02-24 1978-02-24 Direct recording device

Country Status (1)

Country Link
JP (1) JPS54113342A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58116562A (en) * 1981-12-25 1983-07-11 フエリクス・コ−ポレ−シヨン Magnetic video generation method and apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58116562A (en) * 1981-12-25 1983-07-11 フエリクス・コ−ポレ−シヨン Magnetic video generation method and apparatus

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