摘要:
A process is provided that allows the production of multi-layer coatings in which one or more topcoats can be applied to a porous basecoat to produce a uniform and defect-free coating layer. Specifically, a process is provided in which a liquid is applied to the basecoat prior to topcoating such that the air in the basecoat is removed prior to topcoating. This process can occur in-line with a simple apparatus described herein. An added benefit of this method is that it also allows the possibility of adding functionality or performing chemistry to a basecoat after the basecoat is dried and before the topcoat is applied in a single process. For example, the wetting fluid may contain, but is not limited to, surfactants, pH modifiers, polymers, crosslinkers, pigments, and/or dye stabilizers. Advantages over what has been done before include the use of re-wetting process that allows a topcoat to be applied to a porous basecoat that is coated on a non-porous substrate such that bubbles are not formed in the topcoat. In addition, there is added flexibility of incorporating functionality or chemistry in the re-wetting process. Finally, the process is simple to implement and is compatible with many general coating methods, such as slot-die coating, rod coating, blade coating, gravure coating, knife-over-roll coating, or the like.
摘要:
At least one of the following compounds is applied as a re-wet solution to media: potassium iodide, sodium iodide, sodium thiosulfate, potassium thiosulfate, and sodium thiocyanate. The addition of at least one of these compounds to the re-wet solution can improve light fastness on the order of eight to thirteen times or more on porous glossy media. These additives are particularly effective with water-soluble dyes, including dyes such as Reactive Black 31 (Pacified) (RB31), Direct Blue 199 (DB199), Magenta 377 (M377), and Direct Yellow 132 (DY132).
摘要翻译:将以下化合物中的至少一种作为再润湿溶液施用于介质:碘化钾,碘化钠,硫代硫酸钠,硫代硫酸钾和硫氰酸钠。 将这些化合物中的至少一种添加到再湿溶液中可以在多孔光泽介质上提高8至13倍或更高的耐光性。 这些添加剂对于水溶性染料特别有效,包括染料如Reactive Black 31(安抚)(RB31),Direct Blue 199(DB199),Magenta 377(M377)和Direct Yellow 132(DY132)。
摘要:
Ink-receiving print media products having multiple capabilities including (A) minimal drying time; (B) improved smear-fastness; (C) the ability to generate high-definition images with desirable gloss characteristics and gloss-uniformity; and (D) excellent compatibility between the ink materials being delivered and the media products along with other related benefits including the control of ink-coalescence. The print media products of interest have at least one ink-receiving layer on a substrate (e.g. polyethylene-coated paper), with the ink-receiving layer including a poly(vinyl alcohol-ethylene oxide) copolymer as a special multi-functional ingredient designed to produce the foregoing benefits. The copolymer may be employed alone or combined with one or more other ingredients in the ink-receiving layer including pigment(s), supplemental binder(s), and the like in order to fabricate an effective media product ideally suited for inkjet image generation using a wide variety of inks.
摘要:
Ink-receiving media print media products having multi-functional capabilities including (A) minimal drying time; (B) improved gloss-control which allows the production of high-gloss or semi-gloss products as desired; and (C) the ability to generate high-definition and light-fast images. A first embodiment (high-gloss) employs a substrate (e.g. polyethylene-coated paper) having a porous medial layer thereon containing a pigment (e.g. silica) and a binder (e.g. polyvinyl alcohol). A non-porous top layer is placed on the medial layer which optimally consists entirely of one or more binders (excluding pigments, etc.) A second embodiment (semi-gloss) employs a comparable substrate and medial layer with a top layer similar to that described above, although at least one pigment (e.g. silica) is employed therein at a level not exceeding about 10% by weight. Both products provide the foregoing benefits and others.
摘要:
At least one of the following compounds is included on a surface layer of a print medium and in an inkjet ink formulation to be printed thereon: potassium iodide, sodium iodide, sodium thiosulfate, potassium thiosulfate, and sodium thiocyanate. The addition of at least one of these compounds to both the print medium and the inkjet ink can improve light fastness on the order of eight to thirteen times or more on porous glossy media. These additives are particularly effective with water-soluble dyes, including such dyes as Reactive Black 31 (Pacified) (RB31), Direct Blue 199 (DB199), Magenta 377 (M377), and Direct Yellow 132 (DY132).
摘要翻译:在印刷介质的表面层上和印刷在其上的喷墨油墨配方中包含以下化合物中的至少一种:碘化钾,碘化钠,硫代硫酸钠,硫代硫酸钾和硫氰酸钠。 将这些化合物中的至少一种添加到印刷介质和喷墨油墨中可以在多孔光泽介质上提高约8至13倍或更多的耐光性。 这些添加剂对于水溶性染料是特别有效的,包括诸如Reactive Black 31(安慰)(RB31),Direct Blue 199(DB199),Magenta 377(M377)和Direct Yellow 132(DY132)等染料。
摘要:
The present disclosure provides ink sets and related methods mix color gloss uniformity. The ink set can include a black ink with a black pigment having a particle size of about 14 nm to about 16 nm, a DBP absorption of about 80 ml/100 g to about 350 ml/100 g, and a BET surface area of about 160 m2/g to about 1600 m2/g. The ink set can also include pigmented magenta ink, pigmented cyan ink, and pigmented yellow ink. As a whole, the ink set can have a mix color gloss uniformity of at least 7.
摘要:
An inkjet ink composition includes: from 0.25 to 6 weight percent colorant; from 7 to 40 weight percent solvent; from 0.05 to 5 weight percent surfactant; and polyurethane binder in an amount of at least 0.5 weight percent of the inkjet ink composition but not more than twice the weight percent of the colorant. The polyurethane binder has a molecular weight from 32 K to 50 K and an acid number from 40 to 45. The polyurethane binder includes polyether polyol, aliphatic isocyanate and an acid group and does not include chain extenders.
摘要:
The present invention is drawn to a method of treating silica in an aqueous environment. The method can comprise steps of dispersing silica particulates in an aqueous environment to form an aqueous dispersion; reversing the net charge of a surface of the silica particulates from negative to positive using a surface activating agent, thereby forming surface-activated silica particulates dispersed in the water; and contacting the surface-activated silica particulates with organosilane reagents to form reagent-modified and surface-activated silica particulates.
摘要:
The present invention is drawn to a method of preparing a porous media substrate, comprising preparing a coating composition including metal or semi-metal oxide particulates, a polymeric binder, and at least one water soluble coating formulation additive; applying the coating composition to a media substrate to form an ink-receiving layer having a porous surface, wherein at least a portion of the water soluble coating formulation additive remains unreacted at the ink-receiving layer; and removing at least a portion of the water soluble coating formulation additive from the ink-receiving layer.
摘要:
An ink jet recording sheet is provided that delivers a photoparity image when printed with ink jet printer. The recording sheet comprises a two-layer coating. The bottom layer comprises amorphous silica and the top layer comprises spherical colloidal silica. Both silicas are rendered cationic. The recording sheet provides fast dry time, excellent image quality and superior water resistance and handle ability.