Double-side recording medium

摘要

A double-side recording medium comprises a base material for paper mainly comprising pulp, one side of which has an ink jet recording ability and the other side of which has a heat-sensitive recording ability, wherein the time required for the penetration of 0.5 ml of a 10% polyethylene glycol aqueous solution dropped, using a micro-syringe, on the side, to which the ink jet recording ability is imparted into the side to which the heat-sensitive recording ability is imparted, is adjusted to not less than 30 seconds. The recording medium permits high-speed double-side recording and at least one side of the recording medium is favorable for color ink jet recording, while the other side has a heat-sensitive recording ability. The recording medium is one that permits both ink jet recording and heat-sensitive recording. The medium never causes any bleeding on the ink jet recording side, any graying of the heat-sensitive recording layer due to the action of the solvent present in the ink jet ink and never undergoes any discoloration of the printed matter on the heat-sensitive recording layer.