JPS54104340A - Recording electrode driving circuit - Google Patents

Recording electrode driving circuit

Info

Publication number
JPS54104340A
JPS54104340A JP991778A JP991778A JPS54104340A JP S54104340 A JPS54104340 A JP S54104340A JP 991778 A JP991778 A JP 991778A JP 991778 A JP991778 A JP 991778A JP S54104340 A JPS54104340 A JP S54104340A
Authority
JP
Japan
Prior art keywords
electrode
way
low impedance
inputted
conduct
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.)
Granted
Application number
JP991778A
Other languages
Japanese (ja)
Other versions
JPS6217228B2 (en
Inventor
Takashi Ezaki
Hiromasa Isobe
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 JP991778A priority Critical patent/JPS54104340A/en
Publication of JPS54104340A publication Critical patent/JPS54104340A/en
Publication of JPS6217228B2 publication Critical patent/JPS6217228B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • 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)
  • Fax Reproducing Arrangements (AREA)
  • Dot-Matrix Printers And Others (AREA)

Abstract

PURPOSE:To realize high speed recording by sharply forming the waveforms through improvement of rise and fall characteristics of driving pulses applied to an electrode, by applying or cutting high voltage to a specified electrode by way of an active element of low impedance. CONSTITUTION:When an input pulse I1 is applied to drive a needle electrode S1 according to a picture signal, a transistor Q1 is cut off, and the electrode S1 gradually approches a supply voltage -Vs at the time constant determined by a combined capacity CL1 based on a load resistance RL1 and a floating capacity due to wiring of electrode or the like. At this time, a reference pulse Ic inputted at the same time is inputted into the base of Qc to make it to conduct, and the electrode S1 is directly connected to -Vs through a diode D1. Thus, bypassing the load resistance RL1 of high impedance, S1 is connected to -Vs by way of low impedance elements of Qc, D1, and the time constant diminishes, so that the electrode S1 suddenly drops to -Vs. When the input pulse I1 is eliminated, Q1 is made to conduct, and S1 is grounded by way of the low impedance thereof, thereby suddenly settling at the ground potential OV.
JP991778A 1978-02-02 1978-02-02 Recording electrode driving circuit Granted JPS54104340A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP991778A JPS54104340A (en) 1978-02-02 1978-02-02 Recording electrode driving circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP991778A JPS54104340A (en) 1978-02-02 1978-02-02 Recording electrode driving circuit

Publications (2)

Publication Number Publication Date
JPS54104340A true JPS54104340A (en) 1979-08-16
JPS6217228B2 JPS6217228B2 (en) 1987-04-16

Family

ID=11733437

Family Applications (1)

Application Number Title Priority Date Filing Date
JP991778A Granted JPS54104340A (en) 1978-02-02 1978-02-02 Recording electrode driving circuit

Country Status (1)

Country Link
JP (1) JPS54104340A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56116054A (en) * 1980-02-19 1981-09-11 Ricoh Co Ltd One-side electrostatic recording system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01312816A (en) * 1988-06-10 1989-12-18 Murata Mfg Co Ltd Capacitor block

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56116054A (en) * 1980-02-19 1981-09-11 Ricoh Co Ltd One-side electrostatic recording system

Also Published As

Publication number Publication date
JPS6217228B2 (en) 1987-04-16

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