JPS54149633A - Development for zerography - Google Patents
Development for zerographyInfo
- 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
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
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) |
-
1978
- 1978-05-16 JP JP5837878A patent/JPS54149633A/en active Pending
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