US1463897A - Process of making self-copying writing paper - Google Patents
Process of making self-copying writing paper Download PDFInfo
- Publication number
- US1463897A US1463897A US529707A US52970722A US1463897A US 1463897 A US1463897 A US 1463897A US 529707 A US529707 A US 529707A US 52970722 A US52970722 A US 52970722A US 1463897 A US1463897 A US 1463897A
- Authority
- US
- United States
- Prior art keywords
- paper
- copying
- writing paper
- making self
- making
- 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.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title description 7
- 239000000123 paper Substances 0.000 description 19
- 239000002253 acid Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000004040 coloring Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000001131 transforming effect Effects 0.000 description 2
- 239000001993 wax Substances 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 239000011088 parchment paper Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 235000011149 sulphuric acid Nutrition 0.000 description 1
- 239000001117 sulphuric acid Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/10—Duplicating or marking methods; Sheet materials for use therein by using carbon paper or the like
Definitions
- This invention relates to a process of it making a self-copying writing paper.
- This invention relates to a process of it making a self-copying writing paper.
- the usual process of making copying-paper In the usual process of making copying-paper,
- the paper on one side is coated with a mixture of wax or paraffin and a colouring-matter. Owing to the fat nature of paraflin and wax the paper at the same time becomes transparent, making the colour visible through the paper in such a way that writin on the opposite side will not be readab 0.
- the object of this invention is now to overcome the difiiculty mentioned "above.
- the side of the paper to be coated with the colouring-matter is therefore prepared with an acid, that is capable of transforming to paper into parchrnent-paper, for example sulphuric acid, in order that the paper will not be permeated by the fatty substances.
- an acid that is capable of transforming to paper into parchrnent-paper, for example sulphuric acid
- Paper is coated with the mixture whereafter the other side may be used for writing which gllll be readable even if the paper is very Paper prepared in the way stated above may be used for type-writing as well as for other writing.
- a process of making a self-copying writing-paper which consists in preparing 40 one side of the paper with an acid, that is capable of transforming paper into parchment-paper, and then coating this same side with a colouring matter.
- a process of making a self-copying 46 writing paper which consists in preparin one slde of the paper with sulphuric aci and then coating this same side with a colouring matter.
Landscapes
- Color Printing (AREA)
Description
Patented Aug. 7, 1923.
PATENT OFFICE.
AXEL GUSTAF EKIL LUNDGBEN, F NOBBiKfiPING, SWEDEN.
PROCESS OF MAKING SELF-COPYING WRITING PAPER.
Ho Drawing.
To all whom it may concern:
Be it known that I, AXEL GUSTAF EMIL LUNnoRnN, a citizen of the Kingdom of Sweden, residing in Norrkoping, Sweden, have invented certain new and useful Improvements in a Process of Makin Self- Copying Writing Paper, of which t e following is a specification.
This invention relates to a process of it making a self-copying writing paper. In the usual process of making copying-paper,
the paper on one side is coated with a mixture of wax or paraffin and a colouring-matter. Owing to the fat nature of paraflin and wax the paper at the same time becomes transparent, making the colour visible through the paper in such a way that writin on the opposite side will not be readab 0.
The object of this invention is now to overcome the difiiculty mentioned "above. The side of the paper to be coated with the colouring-matter is therefore prepared with an acid, that is capable of transforming to paper into parchrnent-paper, for example sulphuric acid, in order that the paper will not be permeated by the fatty substances. Thus prepared this side of the Application filed lanuary lfi, 1922. Serial'flo. 529,707.
paper is coated with the mixture whereafter the other side may be used for writing which gllll be readable even if the paper is very Paper prepared in the way stated above may be used for type-writing as well as for other writing.
Having now described my invention, what I claim as new and desire to secure by Letters Patent, is
l. A process of making a self-copying writing-paper, which consists in preparing 40 one side of the paper with an acid, that is capable of transforming paper into parchment-paper, and then coating this same side with a colouring matter.
2 A process of making a self-copying 46 writing paper, which consists in preparin one slde of the paper with sulphuric aci and then coating this same side with a colouring matter.
In testimony whereof I have afiixed my on slgnature.
v AXE]. GUSTAF EMIL LUNDGREH. Witnesses:
Jnrrs Isms, E. Jam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US529707A US1463897A (en) | 1922-01-16 | 1922-01-16 | Process of making self-copying writing paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US529707A US1463897A (en) | 1922-01-16 | 1922-01-16 | Process of making self-copying writing paper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1463897A true US1463897A (en) | 1923-08-07 |
Family
ID=24110982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US529707A Expired - Lifetime US1463897A (en) | 1922-01-16 | 1922-01-16 | Process of making self-copying writing paper |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US1463897A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2606775A (en) * | 1946-03-18 | 1952-08-12 | Columbia Ribbon & Carbon | Manifolding |
| US3032355A (en) * | 1958-01-31 | 1962-05-01 | Zalkind Joseph | Meter ticket |
| US3076689A (en) * | 1958-04-02 | 1963-02-05 | Kvp Sutherland Paper Co | Water-marked vegetable parchment |
-
1922
- 1922-01-16 US US529707A patent/US1463897A/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2606775A (en) * | 1946-03-18 | 1952-08-12 | Columbia Ribbon & Carbon | Manifolding |
| US3032355A (en) * | 1958-01-31 | 1962-05-01 | Zalkind Joseph | Meter ticket |
| US3076689A (en) * | 1958-04-02 | 1963-02-05 | Kvp Sutherland Paper Co | Water-marked vegetable parchment |
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