Eastman-kodak Company

Other

Valerie Lynn Kuykendall

Thomas B Brust

Catherine A Falkner

John Leonard Muehlbauer

Eric R Schmittou

Peter John Ghyzel

Paul A Schwartz

Sheridan E Vincent

Leif P Olson

Susan M Flavin

Jean Marie Buongiorne

Daniel R English

Catherine Ann Falkner

Individual aqueous inks or inks in ink sets haves a non-crosslinked, crosslinkable polyurethane having an acid number of 20-40 and is derived from an aromatic diisocyanate; and a diol mixture of Dand Ddiols, and optionally including Ddiol, Ddiol, or both Dand Ddiols. Dhas a Cto Caliphatic group and a pendant carboxy group or neutralized carboxy group. Dhas a chain of repeating Cto Calkylene oxide groups. Dis an alkoxylated bisphenol A or an aliphatic cyclic diol, present at least 5 mol %. Dis a hydroxy-terminated polybutadiene having a molecular weight of at least 1000 and is present in an amount of 0.1-5 mol %. The ink also contains a dispersed pigment colorant; a humectant or organic co-solvent, and optionally, a crosslinking agent.

Aqueous inkjet ink compositions and ink sets

An inkjet printing method uses an aqueous inkjet ink composition having a non-crosslinked, crosslinkable polyurethane having an acid number of 20-40 and is derived from an aromatic diisocyanate; and a diol mixture of Dand Ddiols, and optionally including Ddiol, Ddiol, or both Dand Ddiols. Dhas a Cto Caliphatic group and a pendant carboxy group or neutralized carboxy group. Dhas a chain of repeating Cto Calkylene oxide groups. Dis an alkoxylated bisphenol A or aliphatic cyclic diol, present at least 5 mol %. Dis a hydroxy-terminated polybutadiene having a molecular weight of at least 1000 and is present in an amount of 0.1-5 mol %. The ink composition also contains a dispersed pigment colorant; a humectant or organic co-solvent, and optionally, a crosslinking agent.

Method of inkjet printing

A method of processing photographic color papers is carried out using a photographic bleach-fixing composition in a bleach-fixing step that is carried out for less than 60 seconds. The bleach-fixing composition comprises certain aliphatic or aromatic sulfur-containing compounds that include a &#x2014;N&#x2550;C(SH)&#x2014; group. The bleach-fixing composition can be prepared from a two-part bleach-fixing kit having two solutions that can be added directly to a processing chamber or premixed to form a replenisher solution.

Method of color photographic processing for color photographic papers

A method of processing photographic color papers is carried out using a photographic bleach-fixing composition in a bleach-fixing step that is carried out for less than 60 seconds. The bleach-fixing composition comprises certain aliphatic or aromatic sulfur-containing compounds that include a &mdash;N&boxH;C(SH)&mdash;group. The bleach-fixing composition can be prepared from a two-part bleach-fixing kit having two solutions that can be added directly to a processing chamber or premixed to form a replenisher solution.

Stable, single-part photographic bleach-fixing &ldquo;precursor&rdquo; compositions comprise one or more iron-ligand complexes, one or more thiosulfates as the sole fixing agents, and optionally, a sulfite preservative. At least 50 mol % of the iron in the composition is in the form of Fe(II). This composition can be used directly in photoprocessing, or used as a regenerator when mixed with bleach-fixing overflow to provide a replenishing solution. Because the Fe(II) compounds are precursor bleaching agents, they must be oxidized to Fe(III) for active bleaching prior to or during the photographic processing operations.

Ferrous photographic bleach-fixing precursor compositions and methods for their use

Photographic bleach-fixing solutions in a processing chamber can be directly replenished using a single-part photographic bleach-fixing &ldquo;precursor&rdquo; composition that comprises one or more iron-ligand complexes, one or more thiosulfates as the sole fixing agents, and optionally, a sulfite preservative. At least 50 mol % of the iron in the composition is in the form of Fe(II). Immediately prior to or during directly supplying the precursor composition to the processing chamber from an enclosed container, sufficient ferrous ions are converted to ferric ions to provide desired bleaching in the processing chamber.

Growing community of inventors

Penfield, NY, United States of America

Valerie Lynn Kuykendall