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EP0074098A2
Expired / Lapsed
EP
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Stencil paper for mimeography and process for making stencil
Assignee: Fujifilm Business Innovation Corp
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Filing: 1982-09-03
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Granted: —
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Expires: 2002-09-03
Abstract
Abstract A stencil paper for mimeography is disclosed. The paper is comprised of a porous base which is permeable to mimeographic ink, having thereon a heat-sensitive layer of a material that is solid at ordinary temperatures but which liquifies upon heating. A process for making a stencil is also disclosed, which comprises placing the stencil paper in contact with a receiving medium and selectively heating the stencil paper to liquify portions of the heat-sensitive layer, and allowing the liquified portions of the heat-sensitive layer to transfer to the receiving medium.
Inventors
- 👤 Yoshiki Kikuchi
- 👤 Haruhiko Moriguchi
- 👤 Takashi Ohmori
- 👤 Katsuo Makino
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-27 10:50
CPC Classifications
B; B41; B41N; B41N1/00; B41N1/24; B41N1/242; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24322; Y10T428/24331; Y10T428/24802; Y10T428/24851; Y10T428/24934; Y10T428/24942; Y10T428/249921; Y10T428/249953; Y10T428/249962; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265; Y10T428/31504; Y10T428/31801; Y10T428/31804; Y10T428/31808
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
39 words
A mimeographic stencil paper comprising: a porous base which is permeable to mimeographic ink, and an overcoat, formed on one surface of said base, comprised of a heat-sensitive material that is-solid at ordinary temperature but which liquifies upon heating.
Claim 2
Dependent Claim
39 words
A mimeographic stencil paper comprising: a porous base which is permeable to mimeographic ink, and an overcoat, formed on one surface of said base, comprised of a heat-sensitive material that is-solid at ordinary temperature but which liquifies upon heating.
Claim 3
Dependent Claim
25 words
A mimeographic stencil paper as claimed in Claim 1, further comprising a layer comprised of a heat-sublimable material positioned between said base and said overcoat.
Claim 4
Dependent Claim
22 words
A mimeographic stencil paper as claimed in Claim 1 or 2, wherein said heat-sensitive material liquifies upon heating to 45 - 150°C.
Claim 5
Dependent Claim
15 words
A mimeographic stencil paper as claimed in Claim 3, wherein said heat-sensitive material is wax.
Claim 6
Dependent Claim
20 words
A mimeographic stencil paper as claimed in Claim 2, wherein said heat-sublimable material sublimates upon heating to 45 - 150°C.
Claim 7
Dependent Claim
30 words
A mimeographic stencil paper as claimed in Claim 5, wherein said heat-sublimable material is selected from the group consisting of a nitro dye, a monoazo dye and a disazo dye.
Claim 8
Dependent Claim
25 words
A mimeographic stencil paper as claimed in Claim 2, wherein said heat-sublimable layer has a sublimation temperature higher than the melting temperature of said overcoat.
Claim 9
Dependent Claim
33 words
A mimeographic stencil paper as claimed in Claim 2, wherein said heat-sublimable layer is comprised of a nitro dye, a monoazo dye or a disazo dye and said overcoat is comprised of wax.
Claim 10
Dependent Claim
22 words
A mimeographic stencil paper as claimed in Claims 1 or 2, wherein said overcoat has a thickness of 2 to 15 µm.
Claim 11
Dependent Claim
21 words
A mimeographic stencil paper as claimed in Claim 2, wherein said heat-sublimable layer has a thickness of 2 to 15 µm.
Claim 12
Dependent Claim
101 words
ll. A process for making a stencil for mimeography comprising the steps of: providing a stencil paper comprising a porous base permeable to mimeographic ink having on one surface thereof a layer comprised of a heat-sensitive material that is solid at ordinary temperature but which liquifies upon heating; providing a receiving medium in contact with the heat-sensitive layer; selectively heating portions of the heat-sensitive layer with a thermal head to an extent that the heated portions of the heat-sensitive layer are liquified; and allowing the liquified portions of the heat-sensitive layer to transfer to the receiving medium, thus providing a stencil.
Claim 13
Dependent Claim
101 words
ll. A process for making a stencil for mimeography comprising the steps of: providing a stencil paper comprising a porous base permeable to mimeographic ink having on one surface thereof a layer comprised of a heat-sensitive material that is solid at ordinary temperature but which liquifies upon heating; providing a receiving medium in contact with the heat-sensitive layer; selectively heating portions of the heat-sensitive layer with a thermal head to an extent that the heated portions of the heat-sensitive layer are liquified; and allowing the liquified portions of the heat-sensitive layer to transfer to the receiving medium, thus providing a stencil.
Claim 14
Dependent Claim
135 words
A process for making a stencil for mimeography comprising the steps of: providing a stencil paper comprising a porous base permeable to mimeographic ink having on one surface thereof in sequence a layer comprised of a heat-sublimable material and an overcoat comprised of a heat-sensitive material that is solid at ordinary temperature but which liquifies upon heating; providing a receiving medium in contact with the heat-sensitive layer; selectively heating portions of the heat-sublimable layer and the heat-sensitive layer with a thermal head to an extent that the heated portions of the heat-sensitive layer are liquified; allowing the liquified portions of the heat-sensitive layer to transfer to the receiving medium, thus providing a stencil; and uniformly heating the stencil to an extent that the heated portions of the heat-sublimable layer remaining on the base are sublimated.
Claim 15
Dependent Claim
135 words
A process for making a stencil for mimeography comprising the steps of: providing a stencil paper comprising a porous base permeable to mimeographic ink having on one surface thereof in sequence a layer comprised of a heat-sublimable material and an overcoat comprised of a heat-sensitive material that is solid at ordinary temperature but which liquifies upon heating; providing a receiving medium in contact with the heat-sensitive layer; selectively heating portions of the heat-sublimable layer and the heat-sensitive layer with a thermal head to an extent that the heated portions of the heat-sensitive layer are liquified; allowing the liquified portions of the heat-sensitive layer to transfer to the receiving medium, thus providing a stencil; and uniformly heating the stencil to an extent that the heated portions of the heat-sublimable layer remaining on the base are sublimated.
Claim 16
Dependent Claim
28 words
A process for making a stencil as claimed in Claims 11 or 12, wherein the receiving medium has a different color from the material of the heat-sensitive layer.
Claim 17
Dependent Claim
36 words
A process for making a stencil as claimed in Claims 11 or 12, wherein the receiving medium is provided against the heat-sensitive layer by means of a backup roller which continually rotates during the selective heating.
References Cited (Backward Citations)
No citation records indexed.
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