GB1118193A - Improvements in or relating to duplicating - Google Patents

Improvements in or relating to duplicating

Info

Publication number
GB1118193A
GB1118193A GB31376/65A GB3137665A GB1118193A GB 1118193 A GB1118193 A GB 1118193A GB 31376/65 A GB31376/65 A GB 31376/65A GB 3137665 A GB3137665 A GB 3137665A GB 1118193 A GB1118193 A GB 1118193A
Authority
GB
United Kingdom
Prior art keywords
solid
dyestuff
meltable
transfer
solvent
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
Application number
GB31376/65A
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.)
MELVIN SHARKEY
Original Assignee
MELVIN SHARKEY
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 MELVIN SHARKEY filed Critical MELVIN SHARKEY
Publication of GB1118193A publication Critical patent/GB1118193A/en
Expired legal-status Critical Current

Links

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
    • B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
    • B41M5/382—Contact thermal transfer or sublimation processes
    • B41M5/38207—Contact thermal transfer or sublimation processes characterised by aspects not provided for in groups B41M5/385 - B41M5/395

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Thermal Transfer Or Thermal Recording In General (AREA)
  • Color Printing (AREA)
  • Printing Methods (AREA)

Abstract

A hectograph transfer element (see Division D2) comprises a flexible foundation and a pressure-transferable layer comprising at least 30% of a solid substantially undissolved dyestuff and at least 30% of a solid which is meltable at a temperature between 90 DEG and 250 DEG F. and is when molten a solvent for the dyestuff. The transfer layer may also contain a binder, having a melting point higher than that of the meltable latent solvent, e.g. a cellulose plastics material. In Example 1 the transfer composition comprises ethylcellulose, cetyl alcohol, stearic acid, crystal violet and toluol.ALSO:A hectograph transfer element comprises a flexible foundation and a pressure-transferable layer comprising at least 30% of a solid substantially undissolved dyestuff and at least 30% of a solid which is meltable at a temperature between 90 DEG and 250 DEG F. and is when molten a solvent for the dyestuff. Suitable solids are fatty acids, fatty alcohols, solid esters and solid ethers. The transfer layer may also contain a binder having a melting point higher than that of the meltable latent solvent, e.g. a wax. In the Examples, transfer compositions comprise: (2) a melt of 20 p.b.w. Carnauba wax, 5 p.b.w. raw montan wax, 40 p.b.w. cetyl alcohol and 35 p.b.w. crystal violet; (3) 60 p.b.w. mixed fatty alcohols (mainly stearyl alcohol) and 40 p.b.w. methyl violet; this composition may be applied melted, or as a solution in 50 p.b.w. toluol.ALSO:A hectograph transfer element comprises a flexible foundation and a pressure-transferable layer comprising at least 30% of a solid substantially undissolved dyestuff and at least 30% of a solid which is meltable at a temperature between 90 DEG and 250 DEG F. and is when molten a solvent for the dyestuff. Suitable solids are fatty acids, fatty alcohols, solid esters and solid ethers. The transfer layer may also contain a binder having a melting point higher than that of the meltable latent solvent, e.g. a cellulose plastics material or a thermoplastic synthetic resin, e.g. polyvinyl acetate, or a wax. In the Examples, transfer compositions comprise: (1) ethylcellulose, cetyl alcohol, stearic acid, crystal violet and toluol; (2) Carnauba wax, raw montan wax, cetyl alcohol and crystal violet; (3) mixed fatty alcohols and methyl violet. The composition of Example (1) is coated on to paper and the toluol evaporated; those of Examples (2) and (3) are melted and spread on paper or film respectively. A dry hectographic duplicating process comprises the steps of: (a) imaging a master sheet with the above transfer sheet, (b) heating the image enough to melt at least part of the latent solvent to dissolve at least part of the dyestuff, and (c) pressing the heated images against a copy sheet. The heating may be carried out while the master and copy sheets are pressed into contact. The image may be of material that will absorb infrared radiation and may be heated by applying such radiation.
GB31376/65A 1964-07-22 1965-07-22 Improvements in or relating to duplicating Expired GB1118193A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US384409A US3252413A (en) 1964-07-22 1964-07-22 Heat duplicating products and process

Publications (1)

Publication Number Publication Date
GB1118193A true GB1118193A (en) 1968-06-26

Family

ID=23517208

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31376/65A Expired GB1118193A (en) 1964-07-22 1965-07-22 Improvements in or relating to duplicating

Country Status (3)

Country Link
US (1) US3252413A (en)
DE (1) DE1258426B (en)
GB (1) GB1118193A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3359900A (en) * 1965-10-15 1967-12-26 Columbia Ribbon & Carbon Copying process
US3459581A (en) * 1966-10-10 1969-08-05 Columbia Ribbon Carbon Mfg Process of producing pressure-sensitive hectograph transfer sheets
US4018162A (en) * 1973-08-10 1977-04-19 Melvin Sharkey Continuous duplicating sheets
US4369451A (en) * 1979-10-30 1983-01-18 Oki Electric Industry Co., Ltd. Thermal printing device

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1925235A (en) * 1931-01-24 1933-09-05 Harold W A Dixon Carbon paper
US1978790A (en) * 1933-02-28 1934-10-30 Gould Herman Hot stamping device
US2320769A (en) * 1941-11-17 1943-06-01 Ditto Inc Duplication process and master sheet for use therein
US2501495A (en) * 1944-05-05 1950-03-21 Ibm Copying process
FR959035A (en) * 1946-09-23 1950-03-23
US2489229A (en) * 1946-12-16 1949-11-22 Grace C Steckley Stamping press
GB834843A (en) * 1957-06-19 1960-05-11 Caribonum Ltd Improvements in or relating to carbon paper
US3088028A (en) * 1959-02-06 1963-04-30 Columbia Ribbon & Carbon Duplication with heat-meltable solvent for hectographic coloring material
US3119014A (en) * 1960-12-09 1964-01-21 Columbia Ribbon & Carbon Novel duplicating system
NL299360A (en) * 1962-10-25

Also Published As

Publication number Publication date
DE1258426B (en) 1968-01-11
US3252413A (en) 1966-05-24

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