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US 6,787,203 B2Granted
Thermal transfer recording medium
AssigneeRicoh Company, Ltd.
InventorsKatsunori Hiroishi, Keiichi Shiokawa, Takayuki Sasaki
Life of this patent
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Abstract
A thermal transfer recording medium including at least a substrate; a separation layer located overlying the substrate; and an ink layer located overlying the separation layer, wherein the separation layer includes at least a wax including a polyethylene wax, and wherein the ink layer includes at least a thermoplastic saturated polyester resin having a hydroxyl value of from 20 to 60 mgKOH/g; and an oxidized polyethylene having an acid value not greater than 5 mgKOH/g.
Claims17
A thermal transfer recording medium comprising:
- a substrate;
- a separation layer located overlying the substrate;
- and
- an ink layer located overlying the separation layer,
- wherein the separation layer comprises:
- a wax comprising a polyethylene wax, and
- wherein the ink layer comprises:
- a thermoplastic saturated polyester resin having a hydroxyl value of from 20 to 60 mgKOH/g;
- and
- an oxidized polyethylene having an acid value not greater than 5 mgKOH/g.
7 more elements
Dependencies are inferred from the claim text.