The present invention provides an improved heat transferable inked ribbon for preparing pressure transferable laminates. The inked ribbon includes a film base coated with an ink layer, which has high pressure sensitive adhesiveness, and further with a control layer, which includes a colorant and has high heat sensitive adhesiveness, viscosity, cohesive forces and hardness. Alternatively, the inked ribbon includes a film base coated with an incident rays reflecting layer, which contains white pigment and has high pressure sensitive adhesiveness, with an ink layer, which has high pressure sensitive adhesiveness, and further with a control layer, which has high heat sensitive adhesiveness, viscosity, cohesive forces and hardness. The inked ribbon thus constructed is efficiently and effectively transferred onto a sheet or film with poor wetting properties upon the application of heat; and the heat transferred image is also efficiently transferred from the sheet or film onto an article upon the application of pressure. The incident rays reflecting layer or addition of the colorant to the control layer enables the transferred image to possess increased hiding power.
A formulation and method of printing an ink or meltable ink layer having reactive dyes or mixtures of reactive dyes and disperse dyes as colorants. The ink or ink melt layer also includes an alkaline substance, a binder, and optionally, a heat-activated printing additive. Permanently bonded color images are provided by the reaction between the reactive dye and the final substrate, which may be any cellulosic, protein, or polyamide fiber material, or mixtures with polyester. Reaction occurs upon heat activation of the printed ink image.
A thermal transfer medium which forms images with high speed thermal transfer printers is provided which comprises a substrate, a first coating comprised of at least 75 wt. % of a wax, a second coating comprising a sensible material such as a pigment and a binder resin with high hot tack properties in an amount of at least 20 wt. % based on total dry components and an optional third coating which does not contain any coloring agent. The first coating has a melt viscosity and cohesion lower than that of the second coating and preferably lower hot tack properties to simplify complete transfer to a receiving substrate. The coating formulation provides high adhesion to a receiving substrate with reduced adhesion to the flexible substrate of the thermal transfer medium, allowing for rapid transfer to a receiving substrate as required with high speed thermal transfer printers.
Improvements in thermal printing are described. Print energy absorbers are arranged so as not to alter printed characteristics of colorant. Pre-heaters lessen the amount of print energy necessary to effect printing. D2T2 printing with a laser print energy source is disclosed.
A heat stabilizing composition for polyolefins comprises an oxidized, non-cationized, non-silylated sulfur black pigment, a hindered phenolic antioxidant a sulfur-containing secondary stabilizer, each in stabilizing amount, and a hindered amine. The heat stabilizing composition yields polyolefin compounds and articles having improved long term heat aging stability. Preferably, the sulfur black pigment is treated by washing, to thereby reduce the concentration of soluble sodium salts.
What is disclosed are polyolefin compounds, e.g., polyethylene and polypropylene, and articles therefrom made in by conventional solid, melt-phase compounding with oxidized, non-cationized, non-silylated sulfur black pigment, a phenolic antioxidant and a sulfur-containing secondary stabilizer, each in stabilizing amount, specified below, which provide a synergistic improvement in the long term heat aging of polyolefins. Preferably the sulfur black compound is treated by washing, and reduction in the soluble sodium salts. Also disclosed is melt-phase compounded polyolefin and molded articles made therefrom comprising incorporating of carbon black, oxidized, non-cationized, non-silylated sulfur black pigment, a phenolic antioxidant and sulfur-containing secondary stabilizer.
