Ink-jet recording method

摘要

An ink-jet recording method comprises actuating a heating element which is in contact with an ink in a recording head, in response to a recording signal, to heat the ink thereby creating bubbles in the ink and thus ejecting ink droplets from the head so that recording is effected with the ink droplets. The ink is a liquid having a property such that its viscosity changes abruptly when heated and the heating element generates heat so that the average heat flux qo from the surface of the heating element to the ink satisfies the condition represented by the following formula: $where\; kappa\; denotes\; the\; coefficient\; of\; thermal\; conductivity\; of\; the\; ink,\; S\; the\; effective\; area\; of\; the\; heating\; element,\; V\; the\; volume\; of\; ink\; droplets\; ejected\; by\; one\; driving\; operation,\; TB\; the\; temperature\; of\; the\; ink\; at\; which\; bubbles\; are\; created\; in\; the\; ink,\; To\; the\; temperature\; of\; the\; ink\; before\; the\; ink\; is\; ejected,\; TP\; the\; transition\; temperature\; of\; the\; ink\; at\; which\; the\; abrupt\; change\; in\; the\; viscosity\; occurs,\; and\; alpha\; the\; correction\; factor\; 1.5.\mathop{\mathrm{image}}$