Apparatus for thermographic duplication of information comprisin

Details Apparatus for thermographic duplication of information comprisin Apparatus for thermographic duplication of information comprisin

1976-09-01

1977-08-02

Smith, Alfred E.

Radiant energy

With infrared or thermal pattern recording

Thermal copying of documents

101471, B41M 518, B41M 1908

Patent

active

040398323

ABSTRACT:
An apparatus for duplicating information from a master provided with information, such as text lines or the like, comprising a drum rotatable in a stand, to which drum the master is applied, and the master during rotation of the drum is exposed to directed heat radiation from one or more heat radiators and supplied to a dye-carrier rotating synchronously with the drum, which carrier comprises a dye-carrying web, the dye of which adheres to the master in agreement with the information applied thereon, unprepared copy receiving sheets are then contacted with the master and subsequently removed therefrom. The dye-carrier is mounted nonrotatably but movably on a drive axle supported rotatably in the stand, the apparatus comprises a curve member changing in the direction of the drive axle, along which curve member a curve follower member runs at an angular speed in relation to the curve member equal to an entire division of the angular speed of the dye-carrier so that during one revolution of the dye-carrier it is moved on the drive axle from one position to another one. The invention permits the dye carrier to be used more than once.

REFERENCES:
patent: 3414724 (1968-12-01), Kvarnegard
patent: 3648609 (1972-03-01), Ritzerfeld

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