Transfer Ink for Electro-Erosion Thermal Transfer Printing
Original Publication Date: 1986-Apr-01
Included in the Prior Art Database: 2005-Mar-08
A high melting ink for electro-erosion thermal transfer printing is described. An ink transfer formulation that works in conjunction with the thermal transfer process shown in the figure is described. Thermal transfer inks generally consist of low-melt, low-viscosity waxes and polymers to permit transfer at relatively low energy levels. Melting points of waxes and softening points of polymers are usually maintained below 110 degrees centigrade for thermal print applications. Additionally, a work melt viscosity for polymers should be approximately 8K poise at 160 degrees centigrade. A high softening point (140 degrees centigrade) polyamide resin with a relatively low viscosity 1K poise at 160 degrees centigrade, can be formulated and coated as a solid ink in the configuration shown.