JPS54122125A - Static latent image formation process - Google Patents

Static latent image formation process

Info

Publication number
JPS54122125A
JPS54122125A JP2950278A JP2950278A JPS54122125A JP S54122125 A JPS54122125 A JP S54122125A JP 2950278 A JP2950278 A JP 2950278A JP 2950278 A JP2950278 A JP 2950278A JP S54122125 A JPS54122125 A JP S54122125A
Authority
JP
Japan
Prior art keywords
latent image
high voltage
voltage pulses
electrode
diode
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
JP2950278A
Other languages
Japanese (ja)
Inventor
Hideo Takahashi
Kazuhisa Aikawa
Masakatsu Horie
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP2950278A priority Critical patent/JPS54122125A/en
Publication of JPS54122125A publication Critical patent/JPS54122125A/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)

Abstract

PURPOSE:To form a high quality latent image using a simple constitution, by providing a semiconductor diode in the reverse direction to the polarity of high voltage pulses applied across a needle electrode and a drive circuit for applying high voltage pulses to this electrode. CONSTITUTION:Needle electrode 5 is disposed in contact to latent image forming surface 4 or keeping a gap of few tens micrometers from surface 4, and positive or negative polarity high voltage pulses 7 are applied from drive circuit 6 in the form of characters or signs divided into dots. On reaching start voltage for discharge, discharge occurs, and the charge discharged at that time is kept in dielectric layer 2 of latent image forming unit 3 to form a latent image. Diode 8 is inserted between circuit 6 and electrode 5 in the direction to be reversely biased on applying high voltage pulses. As a result, when high voltage pulses are applied from circuit 6, discharge current is controlled to a correct value due to the reverse direction characteristics of diode 8, premitting occurrence of spots to be eliminated and a high respolution latent image to be obtained.
JP2950278A 1978-03-15 1978-03-15 Static latent image formation process Pending JPS54122125A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2950278A JPS54122125A (en) 1978-03-15 1978-03-15 Static latent image formation process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2950278A JPS54122125A (en) 1978-03-15 1978-03-15 Static latent image formation process

Publications (1)

Publication Number Publication Date
JPS54122125A true JPS54122125A (en) 1979-09-21

Family

ID=12277849

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2950278A Pending JPS54122125A (en) 1978-03-15 1978-03-15 Static latent image formation process

Country Status (1)

Country Link
JP (1) JPS54122125A (en)

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