Abstract:
An ink jet ink contains a self-dispersing pigment and a polyurethane polymer. The polyurethane polymer has units derived from a polyisocyanate, a polyol having no acid group, and a diol having an acid group. The polyurethane polymer has a cross-linked structure and an acid value of the polyurethane polymer is 60 mgKOH/g or more and 100 mgKOH/g or less.
Abstract:
A recording unit is provided which comprises an ink housing part for housing an ink containing a coloring material and an aqueous medium, and an ink jet head part for discharging an ink droplet of the ink, wherein at least one color of the ink is a polyvalent metal salt containing ink further containing a polyvalent metal salt; the ink jet head part for discharging at least the polyvalent metal salt containing ink has a configuration comprised of a substrate having on a base body (107), a heat-generating resistor member (102) forming a heat-generating part, an electrode wire (104) electrically connected to the heat-generating resistor member, and a cavitation resistant film (112) provided on the heat-generating resistor member and the electrode wire via an insulating protection layer, and a liquid flow path communicating with a discharge port for discharging an ink droplet provided corresponding to the heat-generating part; and the cavitation resistant film comprises a layer comprised of an amorphous alloy containing Ta and a layer comprised of an amorphous body of an amorphous alloy which is rich in Ta than the amorphous alloy containing Ta or a passive matter of the amorphous body provided on the layer comprised of the amorphous alloy containing Ta.
Abstract:
A reaction solution that is used for image recording with an ink containing a coloring material in a dissolved or dispersed state to destabilize the dissolved or dispersed state of the coloring material in the ink in contact with the ink to provide high quality and abrasion-resistant images, wherein the reaction solution contains at least a polyvalent metal ion and a nonionic polymer, the Ka value according to the Bristow method is from 1.3 mL.m .msec to 3.0 mL.m .msec inclusive, and the viscosity is from 20 mPa.s to 150 mPa.s inclusive.
Abstract:
A reaction solution that is used for image recording with an ink containing a coloring material in a dissolved or dispersed state to destabilize the dissolved or dispersed state of the coloring material in the ink in contact with the ink to provide high quality and abrasion-resistant images, wherein the reaction solution contains at least a polyvalent metal ion and a nonionic polymer, the Ka value according to the Bristow method is from 1.3 mL.m .msec to 3.0 mL.m .msec inclusive, and the viscosity is from 20 mPa.s to 150 mPa.s inclusive.
Abstract:
This invention provides an ink for an ink jet recording method in which an ink is ejected from a recording head through the action of thermal energy. This ink can improve ejection stability and further can realize high storage stability and color developing properties. The ink is characterized in that the ink contains a pigment represented by general formula (1), a dispersant, a water-soluble organic compound, and a coagulation inhibiting substance capable of inhibiting coagulation after dispersion and breaking of the pigment and the content (% by mass) of the coagulation inhibiting substance based on the total mass of the ink is not less than 0.4 time and less than 1.3 times the content (% by mass) of the pigment based on the total mass of the ink.
Abstract:
Water color ink which enables stable inkject recording without depending on a printing environment and the formation of an image having a practically uniform anti-abrasion feature, is free from image stain even at double-side recording and improved in obscurity of the outline portion of an image, and can produce a high-grade image with no color bleeding. Water color ink used in a system for forming an image using water color ink including a reaction liquid containing at least a polyvalent metal and a pigment dispersed element in which a pigment is dispersed by at least an anionic polymer dispersant, characterized in that specific conditions are met.