JPS5731587A - Selective duplication of part of informations included in duplicating manuscript - Google Patents
Selective duplication of part of informations included in duplicating manuscriptInfo
- Publication number
- JPS5731587A JPS5731587A JP10628380A JP10628380A JPS5731587A JP S5731587 A JPS5731587 A JP S5731587A JP 10628380 A JP10628380 A JP 10628380A JP 10628380 A JP10628380 A JP 10628380A JP S5731587 A JPS5731587 A JP S5731587A
- Authority
- JP
- Japan
- Prior art keywords
- information
- duplicating
- manuscript
- photochromic material
- coloring
- 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
- Combination Of More Than One Step In Electrophotography (AREA)
Abstract
PURPOSE: To easily emerge or erase a part of informations included in a duplicating manuscript with optical radiation or heat supply only, by forming a coloring or decoloring layer with a film-forming material containing a photochromic material.
CONSTITUTION: A coloring or decoloring layer 3 is formed on information 2', expected to be selectively duplicated, in information 2 recorded onto a substrate 1 by a color ink, with a film-forming material containing a photochromic material which can be revesibly colored or decolored by light or heat. When the duplicating manuscript is used as such for duplicating, the information 2' is emerged on a duplicated matter without any hindrance on duplication by the layer 3, because the photochromic material usually assumes an achromatic or light color. When the information 2' is expected to be erased from the duplicated matter, the duplicating manuscript is irradiated through its front or back surface with ultraviolet rays to develop the photochromic material, i.e. to develop the coloring or decoloring layer 3, and to shield the information 2'. Consequently, a duplicated matter on which the other information 2 only is transferred is obtained by duplicating the treated manuscipt.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10628380A JPS5731587A (en) | 1980-07-31 | 1980-07-31 | Selective duplication of part of informations included in duplicating manuscript |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10628380A JPS5731587A (en) | 1980-07-31 | 1980-07-31 | Selective duplication of part of informations included in duplicating manuscript |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5731587A true JPS5731587A (en) | 1982-02-20 |
Family
ID=14429735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10628380A Pending JPS5731587A (en) | 1980-07-31 | 1980-07-31 | Selective duplication of part of informations included in duplicating manuscript |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5731587A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5029808A (en) * | 1973-04-22 | 1975-03-25 | ||
| JPS5297740A (en) * | 1976-02-12 | 1977-08-16 | Kyodo Printing Co Ltd | Format and printed matter difficultly capable of duplication |
-
1980
- 1980-07-31 JP JP10628380A patent/JPS5731587A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5029808A (en) * | 1973-04-22 | 1975-03-25 | ||
| JPS5297740A (en) * | 1976-02-12 | 1977-08-16 | Kyodo Printing Co Ltd | Format and printed matter difficultly capable of duplication |
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