US1594525A - Stencil sheet - Google Patents
Stencil sheet Download PDFInfo
- Publication number
- US1594525A US1594525A US73060A US7306025A US1594525A US 1594525 A US1594525 A US 1594525A US 73060 A US73060 A US 73060A US 7306025 A US7306025 A US 7306025A US 1594525 A US1594525 A US 1594525A
- Authority
- US
- United States
- Prior art keywords
- stencil sheet
- polysaccharides
- esters
- stencil
- sheets
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
- B41N1/00—Printing plates or foils; Materials therefor
- B41N1/24—Stencils; Stencil materials; Carriers therefor
- B41N1/243—Stencils; Stencil materials; Carriers therefor characterised by the ink pervious sheet, e.g. yoshino paper
Definitions
- This invention relates to improvements in stencil sheets of the type commonly used for autographic and typewriting duplication, consisting of a sheet of fibrous material 5 coated or impregnated with a composition comprising esters of polysaccharides, naph- .thenic acids for the purpose of preparing the superior stencil sheets which offer a considerably great resistance to the atmospheric influences on using or storing, and give a larger number of clear and sharp copies.
- coated medium is not soft enough to give a clear writing by the abrasion of a stylus or by the impact of the type of a writing machine.
- a sheet of fibrous material for instance Yoshino paper
- a coating solution prepared by dissolving esters of polysaccharides, such as starch acetates, cellulose acetates, cellulose nitrates and cellulose Xanthate, in suitable solvents, such as alcohols, aceton, theylacetate, amylacetate ether, and adding naphthenic acids.
- esters of polysaccharides such as starch acetates, cellulose acetates, cellulose nitrates and cellulose Xanthate
- suitable solvents such as alcohols, aceton, theylacetate, amylacetate ether, and adding naphthenic acids.
- esters of polysaccharides is intended to include not only one of definite esters of polysaccharides, but also a mixture of them.
- a stencil sheet adapted for stencili zin by pressure comprising a base of fibrous material impregnated With a composition including esters of polysaccharides, and naphthenic acids.
- a stencil sheet adapted for stencilizing by pressure comprising a base of fibrous material impregnated with a composition including, e ters of polysaccharides, naphthenic acids and tempering agents, such as fatty acids, fatty oils, fats and waxes.
Landscapes
- Printing Plates And Materials Therefor (AREA)
- Paints Or Removers (AREA)
Description
Patented Aug. 3, 1926.
UNITED STATES SHINJ'IRO HORII, F TOKYO, JAPAN.
STENCIL SHEET.
No Drawing.
This invention relates to improvements in stencil sheets of the type commonly used for autographic and typewriting duplication, consisting of a sheet of fibrous material 5 coated or impregnated with a composition comprising esters of polysaccharides, naph- .thenic acids for the purpose of preparing the superior stencil sheets which offer a considerably great resistance to the atmospheric influences on using or storing, and give a larger number of clear and sharp copies.
It is ell known that a solution of collodion or celluloid, combined with castor oil or other fatty oils as a tempering agent,
has been used for a coating material to produce stencil sheets. Such a composition does not, however, produce a superior stencil sheet, having the disadvantages of being sticky on handling and, moreover. the
coated medium is not soft enough to give a clear writing by the abrasion of a stylus or by the impact of the type of a writing machine.
It has been found that it is possible to incorporate uniformly. the cellulose esters into naphthenic acids, and that the composition comprising esters of polysaccharides, combined with naphthenic acids is the most superior coating material for stencil sheets,
which. gives a coating of the desired uniform softness but without the stickiness and is not brittlefin cold weather. The stencll sheets thus obtained can be used throughout an extended period of time without any change on the coating and produce therefrom a large number of clear and sharp copies.
In carrying out the invention a sheet of fibrous material, for instance Yoshino paper,
is coated or impregnated with a coating solution prepared by dissolving esters of polysaccharides, such as starch acetates, cellulose acetates, cellulose nitrates and cellulose Xanthate, in suitable solvents, such as alcohols, aceton, theylacetate, amylacetate ether, and adding naphthenic acids. To the above -App1icatiou filed December 3, 1925. Serial No. 73,060.
Naphthe-nic acids 10 Japan wax 5 59 Methanol 15 Aceton i 15 Amylalcohol -i 30 As stated the coated sheets remain 5 throughout an extended period of time practieally unchanged without the drawback of becoming sticky or friable on handling or storing. By the abrasion of a stylus or the blow of the type of a typewriter, without '7 necessity of moistening the sheets with water or moistening solutions, the clear characters may be easily produced thereon.
The term esters of polysaccharides is intended to include not only one of definite esters of polysaccharides, but also a mixture of them.
-lVl1at I claim is 1. A stencil sheet adapted for stencili zin by pressure, comprising a base of fibrous material impregnated With a composition including esters of polysaccharides, and naphthenic acids.
2. A stencil sheet adapted for stencilizing by pressure, comprising a base of fibrous material impregnated with a composition including, e ters of polysaccharides, naphthenic acids and tempering agents, such as fatty acids, fatty oils, fats and waxes.
In testimony whereof I aflix my signature.
SH N J IRO HORII
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US73060A US1594525A (en) | 1925-12-03 | 1925-12-03 | Stencil sheet |
| GB31239/25A GB261203A (en) | 1925-12-03 | 1925-12-10 | Improvements in or relating to stencil sheets |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US73060A US1594525A (en) | 1925-12-03 | 1925-12-03 | Stencil sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1594525A true US1594525A (en) | 1926-08-03 |
Family
ID=22111470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US73060A Expired - Lifetime US1594525A (en) | 1925-12-03 | 1925-12-03 | Stencil sheet |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US1594525A (en) |
| GB (1) | GB261203A (en) |
-
1925
- 1925-12-03 US US73060A patent/US1594525A/en not_active Expired - Lifetime
- 1925-12-10 GB GB31239/25A patent/GB261203A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB261203A (en) | 1926-11-18 |
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