JPS54149633A - Development for zerography - Google Patents

Development for zerography

Info

Publication number
JPS54149633A
JPS54149633A JP5837878A JP5837878A JPS54149633A JP S54149633 A JPS54149633 A JP S54149633A JP 5837878 A JP5837878 A JP 5837878A JP 5837878 A JP5837878 A JP 5837878A JP S54149633 A JPS54149633 A JP S54149633A
Authority
JP
Japan
Prior art keywords
positive
transfer paper
image
negative
wholly
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
JP5837878A
Other languages
Japanese (ja)
Inventor
Shiro Chokai
Hiroshi Endo
Takao Saijo
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.)
Minolta Co Ltd
Original Assignee
Minolta 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 Minolta Co Ltd filed Critical Minolta Co Ltd
Priority to JP5837878A priority Critical patent/JPS54149633A/en
Publication of JPS54149633A publication Critical patent/JPS54149633A/en
Pending legal-status Critical Current

Links

Landscapes

  • Electrophotography Using Other Than Carlson'S Method (AREA)
  • Combination Of More Than One Step In Electrophotography (AREA)

Abstract

PURPOSE: To produce a clear positive image easily from a negative or positive image with the use of a simple construction by charging the whole area of copy paper prior to the copying step only when the positive image is copied from the negative image.
CONSTITUTION: In a method for effecting the negative-positive copying operation, a transfer paper 1 is wholly charged with a preset or positive polarity in a first step A. In a second step B, a photosensitive element 4 is formed with an electrostatic latent image corresponding to the original of the negative image. In a third step C, the transfer paper 1 wholly charged is brought into contact with the element 4 so that the electrostatic charges on the element are used to neutralize the electrostatic charges of the opposite polarity on the facing transfer paper thereby to form the latent image of positive polarity upon the transfer paper. In a fourth step D, the transfer paper formed with the positive latent image from the negative image is developed with the use of a single-component toner having conductivity. In the positive positive copying method, the step for wholly charging the transfer paper of the aforementioned first step A is dispensed with, and the transfer paper having no charge is used.
COPYRIGHT: (C)1979,JPO&Japio
JP5837878A 1978-05-16 1978-05-16 Development for zerography Pending JPS54149633A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5837878A JPS54149633A (en) 1978-05-16 1978-05-16 Development for zerography

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5837878A JPS54149633A (en) 1978-05-16 1978-05-16 Development for zerography

Publications (1)

Publication Number Publication Date
JPS54149633A true JPS54149633A (en) 1979-11-24

Family

ID=13082657

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5837878A Pending JPS54149633A (en) 1978-05-16 1978-05-16 Development for zerography

Country Status (1)

Country Link
JP (1) JPS54149633A (en)

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