GB1320216A - Thermographic processes and arrangements - Google Patents

Thermographic processes and arrangements

Info

Publication number
GB1320216A
GB1320216A GB4419870A GB4419870A GB1320216A GB 1320216 A GB1320216 A GB 1320216A GB 4419870 A GB4419870 A GB 4419870A GB 4419870 A GB4419870 A GB 4419870A GB 1320216 A GB1320216 A GB 1320216A
Authority
GB
United Kingdom
Prior art keywords
drum
heat
original
stencil
sept
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
GB4419870A
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.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Publication of GB1320216A publication Critical patent/GB1320216A/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
    • B41M5/3825—Electric current carrying heat transfer sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
    • B41C1/00—Forme preparation
    • B41C1/14—Forme preparation for stencil-printing or silk-screen printing
    • B41C1/148—Forme preparation for stencil-printing or silk-screen printing by a traditional thermographic exposure using the heat- or light- absorbing properties of the pattern on the original, e.g. by using a flash
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/0095—Heating devices in the form of rollers

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Thermal Transfer Or Thermal Recording In General (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Photographic Developing Apparatuses (AREA)
  • Heat Sensitive Colour Forming Recording (AREA)

Abstract

1320216 Thermographic copying RICOH K K 16 Sept 1970 [17 Sept 1969] 44198/70 Heading G2A [Also in Division H5] A heat-sensitive stencil is thermographically exposed to the image of an original by (a) pre- heating a drum to pre-heat it, (b) passing the superposed original and stencil past the drum, and (c) energizing a source of heat inside the drum to transmit heat radiation through the drum as the stencil and original pass into engagement with the drum. As shown, an original (38) and heat-sensitive sheet (37) are transported by an endless belt (36) past a transparent drum (31) containing a heat ray source 32 and having a layer of high electric resistance 33b (e.g. Nesa glass), and an outer non-stick layer 33c.
GB4419870A 1969-09-17 1970-09-16 Thermographic processes and arrangements Expired GB1320216A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7423269A JPS4916822B1 (en) 1969-09-17 1969-09-17

Publications (1)

Publication Number Publication Date
GB1320216A true GB1320216A (en) 1973-06-13

Family

ID=13541205

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4419870A Expired GB1320216A (en) 1969-09-17 1970-09-16 Thermographic processes and arrangements

Country Status (4)

Country Link
JP (1) JPS4916822B1 (en)
DE (1) DE2046048C3 (en)
FR (1) FR2062191A5 (en)
GB (1) GB1320216A (en)

Also Published As

Publication number Publication date
DE2046048A1 (en) 1971-12-23
DE2046048C3 (en) 1973-10-31
JPS4916822B1 (en) 1974-04-25
DE2046048B2 (en) 1973-04-05
FR2062191A5 (en) 1971-06-25

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee