Incremental printing of symbolic information – Thermal marking apparatus or processes – With recording medium
Patent
1997-01-31
2000-07-18
Le, N.
Incremental printing of symbolic information
Thermal marking apparatus or processes
With recording medium
347176, B41J 2325
Patent
active
060914386
ABSTRACT:
A technique for transferring at least a part of inks of a plurality of colors onto a recording web sheet in superposition by heating the inks with a thermal head, and by passing the recording web sheet and an ink ribbon, superposed with each other, between the thermal head and a platen. The recording web sheet has a plurality of interconnected pores which have openings formed in a surface of the recording web sheet, and a proportion of a total area of the openings of the pores is more than 50% and less than 80% of a total surface area of the recording web sheet. A proportion of a number of the openings of the pores having a pore diameter of 5-35 .mu.m is more than 50% of a total number of the openings of the pores, and a proportion of a number of the openings of the pores having a pore diameter of at least 35 .mu.m is less than 5% of the total number of the openings of the pores. In addition, a difference between: (i) a contact angle of each of the inks of the plurality of colors and a standard liquid and (ii) a contact angle of the recording web sheet and the standard liquid is not larger than 20 degrees.
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ITE Technical Report vol. 17, No. 27, pp. 19-24, VIR '93-28, May 1993 "Multi contrast steps record of the thermal transfer printing method by the wax ink".
Patent Abstracts of Japan, vol. 95, No. 6, Jul. 31, 1995 & JP 07 061012 A, (Victor Co. of Japan Ltd.), Mar. 7, 1995, *Abstract*.
Kabushiki Kaisha TEC
Le N.
Vo Anh T. N.
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