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US 4,805,531 AGranted
Thermographic machine for relief printing
OwnerJean L. Sardainventor
Life of this patent
Estimating the term…
Abstract
A thermographic machine for relief printing enables one to treat a printed paper comprising several settings and to cut laterally and transversely. The printed paper is placed by the printing press on the conveyor of the cutting device. Circular knives slit the printed paper longitudinally. Lateral guides separate the strips of paper before the powdering. The strips are powdered and then go under a heat generator of pulsated hot gas. After cooling, the strips are conveyed to a transverse cutter, which cuts the strips into cards.
Claims9
A thermographic machine for printing in relief, comprising in combination:
- conveyor means for receiving from a printer a sheet of printed paper containing wet ink and for transporting the sheet longitudinally;
- longitudinal cutter means on the conveyor means for slitting the sheet of printed paper longitudinally into a plurality of strips as the sheet is moved by the conveyor means and while the ink is still wet;
- powder means on the conveyor means for distributing a thermographic powder onto the strips as they are moved by the conveyor means, and for removing from the strips powder other than that which adheres to the wet ink on the strips;
- heater means on the conveyor means for heating the strips to cause the thermographic powder to fuse as the conveyor means moves the strips from the powder means;
- cooling means on the conveyor means for cooling the strips as the conveyor means conveys the strips from the heater means;
- transporting means for moving the strips laterally from the conveyor means as the conveyor means conveys the strips from the cooling means;
- and
- transverse cutter means on the transporting means for cutting the strips transversely into cards as the transporting means moves the strips laterally.
5 more elements
A thermographic machine for printing in relief, comprising in combination:
- conveyor means for receiving from a printer a sheet of printed paper containing wet ink and for transporting the sheet longitudinally;
- longitudinal cutter means on the conveyor means for slitting the sheet of printed paper longitudinally into a plurality of strips as the sheet is moved by the conveyor means and while the ink is still wet;
- powder means on the conveyor means for distributing a thermographic powder onto the strips as they are moved by the conveyor means, and for removing from the strips powder other than that which adheres to the wet ink on the strips;
- heater means on the conveyor means for discharging a hot gas onto the strips for heating the powder on the strips to cause the thermographic powder to fuse as the conveyor means moves the strips from the powder means;
- cooling means on the conveyor means for cooling the strips as the conveyor means conveys the strips from the heater means;
- transporting means for moving the strips laterally from the conveyor means as the conveyor means conveys the strips from the cooling means;
- and
- transverse cutter means on the transporting means for cutting the strips transversely into cards as the transporting means moves the strips laterally from the conveyor means.
5 more elements
A thermographic machine for printing in relief, comprising in combination:
- conveyor means for receiving from a printer sheets of printed paper containing wet ink and for transporting the sheets;
- powder means on the conveyor means for distributing a thermographic powder onto the sheets as they are moved by the conveyor means, and for removing from the sheets powder other than that which adheres to the wet ink on the sheets;
- the powder means including a vacuum chamber located above the conveyor means for removing excess powder from the sheets, the vacuum chamber having a pair of apertures on opposite sides from each other;
- an inspection plate;
- a vacuum source;
- means for mounting the inspection plate selectively and moveably over each of the apertures, and for mounting the vacuum source selectively and moveably over the other of the apertures;
- heater means on the conveyor means for heating the sheets to cause the thermographic powder to fuse as the conveyor means moves the sheets from the powder means;
- and
- cooling means on the conveyor means for cooling the sheets as the conveyor means conveys the sheets from the heater means.
6 more elements
A method for thermographically printing in relief, comprising in combination:
- conveying from a printer a sheet of printed paper containing wet ink and transporting the sheet on a conveyor longitudinally;
- then
- slitting the sheet of printed paper longitudinally into a plurality of strips as the sheet is moved along the conveyor and while the ink is still wet;
- then
- distributing a thermographic powder onto the strips as the strips are moved along the conveyor, and removing from the strips powder other than that which adheres to the wet ink on the strips;
- then
- discharging a hot gas onto the strips for heating the powder on the strips to cause the thermographic powder to fuse as the strips move along the conveyor;
- then
- cooling the strips as the strips are moved along the conveyor;
- then
- conveying the strips laterally from the conveyor onto a lateral conveyor;
- then
- cutting the strips transversely into cards as the strips move laterally on the lateral conveyor.
10 more elements
Dependencies are inferred from the claim text.