US1792095A - Stencil sheet - Google Patents

Stencil sheet Download PDF

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Publication number
US1792095A
US1792095A US29561728A US1792095A US 1792095 A US1792095 A US 1792095A US 29561728 A US29561728 A US 29561728A US 1792095 A US1792095 A US 1792095A
Authority
US
United States
Prior art keywords
stencil sheet
acid glycerides
esters
hydrocarbon oil
naphthenic acid
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
Application number
Inventor
Horii Shinjiro
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to US29561728 priority Critical patent/US1792095A/en
Priority claimed from GB3382630A external-priority patent/GB360675A/en
Application granted granted Critical
Publication of US1792095A publication Critical patent/US1792095A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • Y10T428/249921—Web or sheet containing structurally defined element or component
    • Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
    • Y10T428/249962—Void-containing component has a continuous matrix of fibers only [e.g., porous paper, etc.]
    • Y10T428/249963—And a force disintegratable component [e.g., stencil sheet, etc.]
    • 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]
    • Y10T428/31801—Of wax or waxy material
    • Y10T428/31804—Next to cellulosic
    • Y10T428/31808—Cellulosic is paper

Definitions

  • My invention relates to improvements in stencil sheets for use in duplicating manuscript and typewritten documents, drawings and the like, consisting of a sheet of fibrous material having a coating which is impermeable to ink and can be stencilized by the pressure of a writing stylus or the impact of the type of a writing machine.
  • a coating material including a cellulose ester, such as cellulose acetate or nitrate, and a tempering agent, such as castor oil, oleic acid or a heavy petroleum oil.
  • a stencil sheet of fibrous base coated with a coating material including esters of poly saccharides and a tempering-agent such as. naphthenic acid glycerides, chlorinated a naphthalene, oleic alcohol or squalene.
  • the stencil sheet according to the present invention comprises a fibrous base coated with a coating material consisting of a solution of esters of polysaccharides, in a volatile solvent, in combination with naphthenic acid glycerides and a heavy hydrocarbon oil free from solid parafiine.
  • the hydrocarbon oil preferably employed in the present invention is a heavy viscous mineral oil which is sold widely under a variety of names, i. e., paraffinum liquidum, liquid petroleum, paraffine oil and many other special trade name r
  • the novel feature of the present invention comprises the joint use of naphthenic acid glycerides and a heavy hydrocarbon oil.
  • the mixture of naphthenic acid glycerides andra heavy hydrocarbon oil remains limpid even at low temperatures and its viscosity is much less affected by variations of temperature than in the case where either of them is used separately.
  • the stencil sheet With the use of such a mixture as a tempering agent, the stencil sheet is very dry to the touch and is remarkably soft as A 5 compared with a stencil sheet produced by the use of either fatty oils or na hthenic acid glycerides. And, moreover, t e coating is stronge'r'and more durable than in the case of hydrocarbon oils now used.
  • the coating acding to the present invention, comprising 1928. Serial No. 295,617.
  • a homogeneous mixture of esters of polysaccharides, naphthenic acid glycerides and a heavy hydrocarbon oil is stable for a long period of time without any risk of becoming rancid or sticky while being kept, as is the case when other oils, e. g. castor oil, are used either alone or in admixture with a hydrocarbon oil.
  • Squalene is an unsaturated hydrocarbon oil and, therefore, the joint result of naphthenic acid glycerides and squalene difi'ers considerably from that of naphthenic acid glycerides and hydrocarbon oil.
  • the principal difference is that the stencil sheet made in accordance with the present invention is stronger and more durable than where squalene is used in association with cellulose esters and other ingredients. Also, squalene is not obtained abundantly in commerce.
  • a sheet of fibrous base such as Japanese yoshino paper
  • a coating material prepared by dissolving esters of polysaccharides, such as starch acetate, starch palmitate, mannan acetate, cellulose acetate, cellulose nitrate or a mixture of them in any suitable solvents, such as acetone, ether, ethyl alcohol, ethylacetate, butyl alcohol, amyl acetate, benzine, benzol, toluol or a mixture of them, and then mixing therewith naphthenic acid glycerides, together with a heavy hydrocarbon oil preferably having a specific gravity of 25 30 B.
  • a quantity of other tempering agent such as fatty acids, fatty oils, fats, waxes, solid hydrocarbons and ethyl or butyl phthalate, may be added to the above coating material.
  • the proportions of the ingredients of the coating composition may vary according to several circumstances. The following is an example:
  • esters of polysaccharides is intended to include not only one of definite esters of polysaccharides, but also a mixture of them.
  • a stencil sheet comprising a base of fibrous material and a coating composed of a mixture of esters of polysaccharides, naphthenic acid glycerides and a heavy hydrocarbon oil.
  • a stencil sheet comprising a base of fibrous material and a coating composed of a mixture of esters of polysaccharides, naphthenic acid glycerides, a heavy hydrocarbon oil, and a tempering agent.

Description

UNITED STATES PATENT OFFICE SHINJ'IRO HORII, OF TOKYO, JAPAN STENCIL SHEET No Drawing. ,Application filed July 26,
My invention relates to improvements in stencil sheets for use in duplicating manuscript and typewritten documents, drawings and the like, consisting of a sheet of fibrous material having a coating which is impermeable to ink and can be stencilized by the pressure of a writing stylus or the impact of the type of a writing machine.
It has previously been proposed to produce such a stencil sheet of fibrous base coated with a coating material including a cellulose ester, such as cellulose acetate or nitrate, and a tempering agent, such as castor oil, oleic acid or a heavy petroleum oil.
It has furthermore been proposed to produce a stencil sheet of fibrous base coated with a coating material including esters of poly saccharides and a tempering-agent such as. naphthenic acid glycerides, chlorinated a naphthalene, oleic alcohol or squalene.
The stencil sheet according to the present invention comprises a fibrous base coated with a coating material consisting of a solution of esters of polysaccharides, in a volatile solvent, in combination with naphthenic acid glycerides and a heavy hydrocarbon oil free from solid parafiine.
The hydrocarbon oil preferably employed in the present invention is a heavy viscous mineral oil which is sold widely under a variety of names, i. e., paraffinum liquidum, liquid petroleum, paraffine oil and many other special trade name r The novel feature of the present invention comprises the joint use of naphthenic acid glycerides and a heavy hydrocarbon oil. The mixture of naphthenic acid glycerides andra heavy hydrocarbon oil remains limpid even at low temperatures and its viscosity is much less affected by variations of temperature than in the case where either of them is used separately. With the use of such a mixture as a tempering agent, the stencil sheet is very dry to the touch and is remarkably soft as A 5 compared with a stencil sheet produced by the use of either fatty oils or na hthenic acid glycerides. And, moreover, t e coating is stronge'r'and more durable than in the case of hydrocarbon oils now used. The coating acding to the present invention, comprising 1928. Serial No. 295,617.
a homogeneous mixture of esters of polysaccharides, naphthenic acid glycerides and a heavy hydrocarbon oil, is stable for a long period of time without any risk of becoming rancid or sticky while being kept, as is the case when other oils, e. g. castor oil, are used either alone or in admixture with a hydrocarbon oil. Squalene is an unsaturated hydrocarbon oil and, therefore, the joint result of naphthenic acid glycerides and squalene difi'ers considerably from that of naphthenic acid glycerides and hydrocarbon oil. The principal difference is that the stencil sheet made in accordance with the present invention is stronger and more durable than where squalene is used in association with cellulose esters and other ingredients. Also, squalene is not obtained abundantly in commerce.
In the practice of this invention, a sheet of fibrous base, such as Japanese yoshino paper, is coated or impregnated with a coating material prepared by dissolving esters of polysaccharides, such as starch acetate, starch palmitate, mannan acetate, cellulose acetate, cellulose nitrate or a mixture of them in any suitable solvents, such as acetone, ether, ethyl alcohol, ethylacetate, butyl alcohol, amyl acetate, benzine, benzol, toluol or a mixture of them, and then mixing therewith naphthenic acid glycerides, together with a heavy hydrocarbon oil preferably having a specific gravity of 25 30 B. If desired, a quantity of other tempering agent, such as fatty acids, fatty oils, fats, waxes, solid hydrocarbons and ethyl or butyl phthalate, may be added to the above coating material.
The proportions of the ingredients of the coating composition may vary according to several circumstances. The following is an example:
Parts by I weight Cellulose nitrate 10 cetone; 2O Ethyl alcohol 20 Ethyl acetate 20 Amyl acetate 30 Benzol 30 Napththenic acid glycerides 15' Parafline oil at 30 B 15 The term esters of polysaccharides is intended to include not only one of definite esters of polysaccharides, but also a mixture of them.
5 What I claim is:
1. A stencil sheet, comprising a base of fibrous material and a coating composed of a mixture of esters of polysaccharides, naphthenic acid glycerides and a heavy hydrocarbon oil.
2. A stencil sheet, comprising a base of fibrous material and a coating composed of a mixture of esters of polysaccharides, naphthenic acid glycerides, a heavy hydrocarbon oil, and a tempering agent.
In testimony whereof I afiix my si ature.
SHINJIRO H R11.
US29561728 1928-07-26 1928-07-26 Stencil sheet Expired - Lifetime US1792095A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US29561728 US1792095A (en) 1928-07-26 1928-07-26 Stencil sheet

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US29561728 US1792095A (en) 1928-07-26 1928-07-26 Stencil sheet
GB3382630A GB360675A (en) 1930-11-10 1930-11-10 Improvements in or relating to stencil sheets

Publications (1)

Publication Number Publication Date
US1792095A true US1792095A (en) 1931-02-10

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Family Applications (1)

Application Number Title Priority Date Filing Date
US29561728 Expired - Lifetime US1792095A (en) 1928-07-26 1928-07-26 Stencil sheet

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2756161A (en) * 1952-07-30 1956-07-24 Horii Shinjiro Stencil sheets
US3435758A (en) * 1966-03-02 1969-04-01 Dymo Industries Inc Stencil and method of making the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2756161A (en) * 1952-07-30 1956-07-24 Horii Shinjiro Stencil sheets
US3435758A (en) * 1966-03-02 1969-04-01 Dymo Industries Inc Stencil and method of making the same

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