US322131A - saxony - Google Patents
saxony Download PDFInfo
- Publication number
- US322131A US322131A US322131DA US322131A US 322131 A US322131 A US 322131A US 322131D A US322131D A US 322131DA US 322131 A US322131 A US 322131A
- Authority
- US
- United States
- Prior art keywords
- paper
- blue
- ferro
- ferric
- saxony
- 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
- ORXDSIPBTFAEKJ-UHFFFAOYSA-N ferrocyanide Chemical compound N#C[Fe-4](C#N)(C#N)(C#N)(C#N)C#N ORXDSIPBTFAEKJ-UHFFFAOYSA-N 0.000 description 14
- 239000002253 acid Substances 0.000 description 12
- 239000000126 substance Substances 0.000 description 12
- JEIPFZHSYJVQDO-UHFFFAOYSA-N Iron(III) oxide Chemical compound O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 10
- 239000000463 material Substances 0.000 description 8
- 229940097275 Indigo Drugs 0.000 description 6
- 241001062009 Indigofera Species 0.000 description 6
- 235000000177 Indigofera tinctoria Nutrition 0.000 description 6
- 239000003513 alkali Substances 0.000 description 6
- 229960005191 ferric oxide Drugs 0.000 description 6
- 229910000460 iron oxide Inorganic materials 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- FKDGKTNDRAXENR-UHFFFAOYSA-N 3-[bis(4-amino-3-sulfophenyl)methylidene]-6-imino-5-methylcyclohexa-1,4-diene-1-sulfonic acid Chemical compound C1=C(S(O)(=O)=O)C(=N)C(C)=CC1=C(C=1C=C(C(N)=CC=1)S(O)(=O)=O)C1=CC=C(N)C(S(O)(=O)=O)=C1 FKDGKTNDRAXENR-UHFFFAOYSA-N 0.000 description 4
- ZKQDCIXGCQPQNV-UHFFFAOYSA-N Calcium hypochlorite Chemical compound [Ca+2].Cl[O-].Cl[O-] ZKQDCIXGCQPQNV-UHFFFAOYSA-N 0.000 description 4
- DSLZVSRJTYRBFB-LLEIAEIESA-L D-glucarate(2-) Chemical compound [O-]C(=O)[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C([O-])=O DSLZVSRJTYRBFB-LLEIAEIESA-L 0.000 description 4
- 229960003351 Prussian blue Drugs 0.000 description 4
- 150000007513 acids Chemical class 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- DCYOBGZUOMKFPA-UHFFFAOYSA-N iron(2+);iron(3+);octadecacyanide Chemical compound [Fe+2].[Fe+2].[Fe+2].[Fe+3].[Fe+3].[Fe+3].[Fe+3].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-] DCYOBGZUOMKFPA-UHFFFAOYSA-N 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- 239000011780 sodium chloride Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate dianion Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-N Carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 2
- 239000005955 Ferric phosphate Substances 0.000 description 2
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K Iron(III) phosphate Chemical compound [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 description 2
- 229920001131 Pulp (paper) Polymers 0.000 description 2
- 210000004291 Uterus Anatomy 0.000 description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-M acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 2
- 230000004075 alteration Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000004061 bleaching Methods 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- KHLVKKOJDHCJMG-QDBORUFSSA-L disodium;(2E)-3-oxo-2-(3-oxo-5-sulfonato-1H-indol-2-ylidene)-1H-indole-5-sulfonate Chemical compound [Na+].[Na+].N/1C2=CC=C(S([O-])(=O)=O)C=C2C(=O)C\1=C1/NC2=CC=C(S(=O)(=O)[O-])C=C2C1=O KHLVKKOJDHCJMG-QDBORUFSSA-L 0.000 description 2
- 229940032958 ferric phosphate Drugs 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 229960003988 indigo carmine Drugs 0.000 description 2
- 235000012738 indigotine Nutrition 0.000 description 2
- 239000004179 indigotine Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- VBMVTYDPPZVILR-UHFFFAOYSA-N iron(2+);oxygen(2-) Chemical compound [O-2].[Fe+2] VBMVTYDPPZVILR-UHFFFAOYSA-N 0.000 description 2
- 229910000399 iron(III) phosphate Inorganic materials 0.000 description 2
- 150000002825 nitriles Chemical class 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- KEAYESYHFKHZAL-UHFFFAOYSA-N sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
- B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
- B42D25/29—Securities; Bank notes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
- Y10T428/24835—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] including developable image or soluble portion in coating or impregnation [e.g., safety paper, etc.]
Definitions
- This invention relates to the manufacture of paper that shall at once indicate any alteration effected by chemical means of writing or other marks made thereon.
- the known methods for the product-ion of such safetypaper either do not offer perfect security for the purpose required,on account of the chemical reagents employed therein, or they are of v such a complicated nature as not to be practically available.
- the purpose aimed at is attained by manufacturing a colored'paper of such a nature that the chemicals employed for removing writing or other marks in ink from the same-such as acids, chlorine, &c.will destroy or alter the color, the paper thus affording the required safety, as any attempt to remove or alter the writing will at once become visible thereon.
- the method of practically carryingv out the invention is as follows:
- the prepared paper material is first slightly mordanted with the salt of an iron oxide, (preferably acetate of iron,) and is then intimately mixed in the rag-engine with such a quantity of ferro-cyanide of lead or other insoluble ferro-cyanide. (preferably in a freshly-precipitated condition) as will produce the required tint when the paper is treated with an acid.
- a blue tint will be produced by the formation of Prussian blue. This blue tint should be only very slight, in consequence whereof it is expedient to previously neutralize the acid to a great extent by the addition of carbonate of soda or other alkali. If, on the other hand, this blue coloration should not occur, it must be produced up to a certain strength by the addition of sodium ferro-eyanide.
- the slightly-blue coloration can be produced by indigo, either formed on the paper fiber itself or used as indigo-carmine, or by tinting either with bluish or reddish hues by means of acid fuchsine. with indigo must not be too strong.-
- ferric salt employed for the mordanting may be substituted, either partially or entirely, an insoluble iron oxide salt, such as ferric phosphate.
- an insoluble iron oxide salt such as ferric phosphate.
- ferro-cyanide of lead or other insoluble ferrocyanide a soluble ferrocyanide may be used, in which case the ferric-oxide salt must be a ferric-oxide saccharate.
- the blue tinting The paper thus prepared will assume a strong blue color on treating it with acid, Prussian blue being formed. On treating it with chlorine and chloride-of-lime solutions the color will be partly removed by the destruction of the organic coloringmatter, and
- the strength of the blue coloration, on acting upon the finished paper with acids, depends upon the amount of the addition of ferro-cyanide, which can be determined for every case according to the strength of the coloration or the required sensitiveness of the paper.
- the desired result may also be obtained by impregnating the finished paper therewith, or with the chemicals that serve to produce those substances applied in proper sequence, although this would involve greater trouble.
- ferrocyanides insoluble in water but sol- 5 uble in acids such as ferro-cyanide of lead GERHARD SOHREIBER.
Description
UNITED STATES PATENT Uterus,
GERHARD SOHREIBER, OF, CHEM-NITZ, SAXONY, GERMANY, ASSIGNOR TO DIE DIRECTION DER PATENTPAPIERFABRIK ZU PENIG, OF PENIG, SAXONY.
PROCESS OF MANUFACTURING SAFETY-PAPER FOR CHECKS, 80C.
UPEGIFICATION forming part of Letters Patent No. 322,131, dated Julyll, 1885.
Application filed March 18,1885. (No specimens.)
' fication.
This invention relates to the manufacture of paper that shall at once indicate any alteration effected by chemical means of writing or other marks made thereon. The known methods for the product-ion of such safetypaper either do not offer perfect security for the purpose required,on account of the chemical reagents employed therein, or they are of v such a complicated nature as not to be practically available. a
According to the present invention, the purpose aimed at is attained by manufacturing a colored'paper of such a nature that the chemicals employed for removing writing or other marks in ink from the same-such as acids, chlorine, &c.will destroy or alter the color, the paper thus affording the required safety, as any attempt to remove or alter the writing will at once become visible thereon.
The requisite operations for the preparation of such paper are at the same time very simple, and do not affect or complicate the ordinary process of manufacturing paper, as the requisite chemicals need either only be added to the paper material in the rag-engine or the finished paper may be impregnated therewith.
The method of practically carryingv out the invention is as follows: The prepared paper material is first slightly mordanted with the salt of an iron oxide, (preferably acetate of iron,) and is then intimately mixed in the rag-engine with such a quantity of ferro-cyanide of lead or other insoluble ferro-cyanide. (preferably in a freshly-precipitated condition) as will produce the required tint when the paper is treated with an acid. If the paper-pulp be not entirely free from acid, as is generally the case with papers having a resinous size, a blue tint will be produced by the formation of Prussian blue. This blue tint should be only very slight, in consequence whereof it is expedient to previously neutralize the acid to a great extent by the addition of carbonate of soda or other alkali. If, on the other hand, this blue coloration should not occur, it must be produced up to a certain strength by the addition of sodium ferro-eyanide.
The slightly-blue coloration can be produced by indigo, either formed on the paper fiber itself or used as indigo-carmine, or by tinting either with bluish or reddish hues by means of acid fuchsine. with indigo must not be too strong.-
In place of the ferric salt employed for the mordanting, may be substituted, either partially or entirely, an insoluble iron oxide salt, such as ferric phosphate. In place of ferro-cyanide of lead or other insoluble ferrocyanide, a soluble ferrocyanide may be used, in which case the ferric-oxide salt must be a ferric-oxide saccharate.
The blue tinting The paper thus prepared will assume a strong blue color on treating it with acid, Prussian blue being formed. On treating it with chlorine and chloride-of-lime solutions the color will be partly removed by the destruction of the organic coloringmatter, and
.on treating it with alkalies or alkali cyanides a bleaching or removal of the blue ground color will be effected.
The strength of the blue coloration, on acting upon the finished paper with acids, depends upon the amount of the addition of ferro-cyanide, which can be determined for every case according to the strength of the coloration or the required sensitiveness of the paper.
Instead of adding the above-described substances to the paper material, the desired result may also be obtained by impregnating the finished paper therewith, or with the chemicals that serve to produce those substances applied in proper sequence, although this would involve greater trouble.
Having thus described my invention, and also the manner of performing it,what I claim, and desire to secure by Letters Patent, is-
The process of producing safety-paper, In testimony whereof I have signed my 10 wherein the paper material or the finished name to this specification in the presence of paper is treated with ferric-oxide salts and two subscribing witnesses.
' with ferrocyanides insoluble in water but sol- 5 uble in acidssuch as ferro-cyanide of lead GERHARD SOHREIBER.
or the like on the one hand, or ferric-oxide saccharate and ferro-cyanides soluble in water Witnesses: on the other handthe paper being afterward ALBERT VIEwEs, treated with indigo or acid fuchsine. OTTO REIcHoLD.
Publications (1)
Publication Number | Publication Date |
---|---|
US322131A true US322131A (en) | 1885-07-14 |
Family
ID=2391269
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US322131D Expired - Lifetime US322131A (en) | saxony |
Country Status (1)
Country | Link |
---|---|
US (1) | US322131A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2610921A (en) * | 1949-04-18 | 1952-09-16 | Joseph R Ehrlich | Transfer ink |
US4182261A (en) * | 1975-12-18 | 1980-01-08 | Identicator Corporation | Credit card printer for fingerprints and solutions |
US5443629A (en) * | 1991-11-27 | 1995-08-22 | Alex Wilson Coldstream, Ltd. | Latent image ink |
US6045656A (en) * | 1998-12-21 | 2000-04-04 | Westvaco Corporation | Process for making and detecting anti-counterfeit paper |
US6054021A (en) * | 1999-01-20 | 2000-04-25 | Westvaco Corporation | Process of manufacturing authenticatable paper products |
-
0
- US US322131D patent/US322131A/en not_active Expired - Lifetime
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2610921A (en) * | 1949-04-18 | 1952-09-16 | Joseph R Ehrlich | Transfer ink |
US4182261A (en) * | 1975-12-18 | 1980-01-08 | Identicator Corporation | Credit card printer for fingerprints and solutions |
US5443629A (en) * | 1991-11-27 | 1995-08-22 | Alex Wilson Coldstream, Ltd. | Latent image ink |
US6045656A (en) * | 1998-12-21 | 2000-04-04 | Westvaco Corporation | Process for making and detecting anti-counterfeit paper |
US6054021A (en) * | 1999-01-20 | 2000-04-25 | Westvaco Corporation | Process of manufacturing authenticatable paper products |
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