Abstract: An aqueous inkjet ink is described including water, a charge stabilized anti-abrasion polymer provided as a hydrophobic colloidal sol, a water-soluble humectant and a polyethyleneglycol-diether compound of Formula I as an anti-abrasion aid: R1—(OCH2CH2)nO—R2 ??(I) where R1 and R2 can be the same or different and are individually alkyl with 1 to 4 carbons, or phenyl, and n is between 2 and 45. Also described is a related aqueous inkjet ink-set and an image forming method having the step of imagewise applying by jetting to a receiver, one or more aqueous inks, as above described.

Abstract: An aqueous inkjet ink is described comprising water, a charge stabilized anti-abrasion polymer provided as a hydrophobic colloidal sol, a water-soluble humectant and a polyethyleneglycol-diether compound of Formula I as an anti-abrasion aid: R1—(OCH2CH2)nO—R2 ??(I) where R1 and R2 can be the same or different and are individually alkyl with 1 to 4 carbons, or phenyl, and n is between 2 and 45. Also described is a related aqueous inkjet ink-set and an image forming method having the step of imagewise applying by jetting to a receiver, one or more aqueous inks, as above described.

Abstract: Spectrally sensitized tabular grain emulsions are disclosed exhibiting (1) increased speeds and (2) contrasts and speed-granularity relationships superior to those of conventional emulsions of the same average grain sizes. The tabular grains have {111} major faces, contain greater than 80 mole percent bromide, based on silver, and are substantially free of iodide, exhibit an average aspect ratio of greater than 50 and an average equivalent circular diameter of >10 micrometers, account for greater than 90 percent of total grain projected area, and have latent image forming chemical sensitization sites on their surfaces including epitaxially deposited silver halide protrusions of a face centered cubic rock salt crystal lattice structure forming epitaxial junctions with the tabular grains. The protrusions are restricted to those portions of the tabular grains (a) located nearest peripheral edges of and (b) accounting for less than 50 percent of the {111} major faces of the tabular grains.

Abstract: Spectrally sensitized tabular grain emulsions are disclosed exhibiting increased speeds and speed-granularity relationships superior to those of conventional emulsions of the same average grain sizes. The tabular grains have {111} major faces, contain greater than 70 mole percent bromide and from 0.25 to 10 mole percent iodide, based on silver, exhibit an average aspect ratio of greater than 50 and an average equivalent circular diameter of >10 micrometers, account for greater than 90 percent of total grain projected area, and have latent image forming chemical sensitization sites on their surfaces including epitaxially deposited silver halide protrusions of a face centered cubic rock salt crystal lattice structure forming epitaxial junctions with the tabular grains.

Abstract: A radiation-sensitive spectrally sensitized tabular grain emulsion is disclosed which exhibits improved speed and contrast. The tabular grains have {111} major faces, contain greater than 70 mole percent bromide and up to 10 mole percent iodide, based on silver, account for greater than 90 percent of total grain projected area, and have an average equivalent circular diameter of at least 3.5 .mu.m. The tabular grains have latent image forming chemical sensitization sites on their surfaces including epitaxially deposited silver halide protrusions of a face centered cubic rock salt crystal lattice structure forming epitaxial junctions with the tabular grains.

Abstract: A radiation sensitive emulsion is disclosed that improves the light absorption of high chloride tabular grain emulsions in the longer wavelength half of the blue spectrum. The tabular grains each have a tabular substrate portion containing at least 50 mole percent chloride, based on silver, bounded by {100} major faces and a portion deposited on the substrate containing a silver salt exhibiting a higher solubility than silver iodide and a higher absorption of blue light at wavelengths longer than 450 nm than silver iodide.