US121946A - Improvement in colored paper - Google Patents
Improvement in colored paper Download PDFInfo
- Publication number
- US121946A US121946A US121946DA US121946A US 121946 A US121946 A US 121946A US 121946D A US121946D A US 121946DA US 121946 A US121946 A US 121946A
- Authority
- US
- United States
- Prior art keywords
- paper
- improvement
- colored paper
- colored
- sizing
- 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
- 238000004513 sizing Methods 0.000 description 5
- 238000003490 calendering Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 238000004040 coloring Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000000126 substance 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
- B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
- B41M5/52—Macromolecular coatings
- B41M5/5254—Macromolecular coatings characterised by the use of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds, e.g. vinyl polymers
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
- D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
- D21H19/20—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
-
- 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
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S428/00—Stock material or miscellaneous articles
- Y10S428/916—Fraud or tamper detecting
-
- 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
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31971—Of carbohydrate
- Y10T428/31993—Of paper
Definitions
- the colored writing-paper now in use is dyed in the pulp, so that the body of the texture is of uniform color, and when sized and calendered a tint not essentially permanent becomes practioally indelible. Consequently writing may be removed from such paper, by erasure or otherwise,
- the object of our invention is to guard against the fraudulent removal of Writing from the paper and to lessen the cost of its manufacture.
- the first object is accomplished by applying, after the pulp has assumed the sheet form and is in the process of sizing, a sensitive dye which is fugitive under the action of acids and alkalies.
- the sizing acting as a kind of shield the fabric receives the tint externally, while a portion of the inner fiber remains white. Now, any attempt to remove writing from paper thus made will so disturb the surface as to betray the fraudulent intent.
- the mode of operation maybe thus described:
- the desired tint is given to the sizing, and as the sheet passes through it in a continuous web it is duly colored as well as sized, and is ready for drying and calendering.
- the coloring fluid may be applied after the web emerges from the sizing-vat by means of a second vat filled with the fluid dye or of a saturated mat applied to the surface of the sheet as it passes.
- the web When permanency of color is desired the web may be passed through a vat of coloring fluid before it receives the colored sizing. After this the fabric is dried and calendered in the usual manner.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Color Printing (AREA)
- Paper (AREA)
Description
UNITED STATES PATENT QFFICE.
GEORGE LA MONTE, GEORGE e. sAXE, AND oEARLEs H. CLAYTON, OE NEw YORK, N. Y.
IMPROVEMENT IN COLORED PAPER.
Specification forming part of 'Letters Patent No. 121,946, dated December 19, 1871.
To all whom it may concern:
Be it known that we, GEORGE LA MONTE, GEORGE G. SAXE, and OHARLEs H. CLAYTON, all of the city, county, and State of New York, have invented a new and useful Improvement in Colored Paper; and we do hereby declare the following to be a full and correct description of the same.
The colored writing-paper now in use is dyed in the pulp, so that the body of the texture is of uniform color, and when sized and calendered a tint not essentially permanent becomes practioally indelible. Consequently writing may be removed from such paper, by erasure or otherwise,
without materially changing the color of the paper. The process of changing from a dye of one color to one of another also involves considerable labor and expense, materially enhancing the cost of the paper. The object of our invention is to guard against the fraudulent removal of Writing from the paper and to lessen the cost of its manufacture.
The first object is accomplished by applying, after the pulp has assumed the sheet form and is in the process of sizing, a sensitive dye which is fugitive under the action of acids and alkalies. The sizing acting as a kind of shield, the fabric receives the tint externally, while a portion of the inner fiber remains white. Now, any attempt to remove writing from paper thus made will so disturb the surface as to betray the fraudulent intent.
The economy of the procsss will be obvious from. the fact that the die may be readily changed for one of another color in the same web and with little delay.
The mode of operation maybe thus described: The desired tint is given to the sizing, and as the sheet passes through it in a continuous web it is duly colored as well as sized, and is ready for drying and calendering. If preferred, the coloring fluid may be applied after the web emerges from the sizing-vat by means of a second vat filled with the fluid dye or of a saturated mat applied to the surface of the sheet as it passes.
When permanency of color is desired the web may be passed through a vat of coloring fluid before it receives the colored sizing. After this the fabric is dried and calendered in the usual manner.
Having thus described our invention, we claim and desire to secure by Letters Patent A colored paper superficially dyed in the sheet in or immediately after the process of sizing, during the course of manufacture, and with colors which are fugitive under the action of the acids and alkalies employed for the fraudulent removal of writing, for the purpose of affording a double means of disclosing the alteration of written documents, whether effected by erasure or by the use of chemicals, as specified.
The above specification of our said invention signed and witnessed at New York this 16th day of November, A. 1). 1871.
GEO. LA MONTE. GEORGE G. SAXE. CHARLES H. CLAYTON.
Witnesses J As. W. HALE,
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US121946A true US121946A (en) | 1871-12-19 |
Family
ID=2191386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US121946D Expired - Lifetime US121946A (en) | Improvement in colored paper |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US121946A (en) |
-
0
- US US121946D patent/US121946A/en not_active Expired - Lifetime
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