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US 5,122,187 AGranted
Hot melt ink compositions
AssigneeXerox Corporation
InventorsWilliam M. Schwarz, Robert H. Marchessault, Lupu Alexandru, Bernard Henrissat
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AssigneeXerox Corporation
InventorsWilliam M. Schwarz, Robert H. Marchessault, Lupu Alexandru, Bernard Henrissat
Estimating the term…
Disclosed are hot melt ink compositions suitable for ink jet printing which comprise a colorant, a binder, and a propellant selected from the group consisting of hydrazine; cyclic amines; ureas; carboxylic acids; sulfonic acids; aldehydes; ketones; hydrocarbons; esters; phenols; amides; imides; halocarbons; urethanes; ethers; sulfones; sulfamides; sulfonamides; phosphites; phosphonates; phosphates; alkyl sulfides; alkyl acetates; and sulfur dioxide. Also disclosed are hot melt ink compositions suitable for ink jet printing which comprise a colorant, a propellant, and a binder selected from the group consisting of rosin esters; polyamides; dimer acid amides; fatty acid amides; epoxy resins; fluid paraffin waxes; fluid microcrystalline waxes; Fischer-Tropsch waxes; polyvinyl alcohol resins; polyols; cellulose esters; cellulose ethers; polyvinyl pyridine resins; fatty acids; fatty acid esters; poly sulfonamides; benzoate esters; long chain alcohols; phthalate plasticizers; citrate plasticizers; maleate plasticizers; sulfones; polyvinyl pyrrolidinone copolymers; polyvinyl pyrrolidone/polyvinyl acetate copolymers; novalac resins; natural product waxes; mixtures of linear primary alcohols and linear long chain amides; and mixtures of linear primary alcohols and fatty acid amides. In one embodiment, the binder comprises a liquid crystalline material.
A hot melt ink composition which comprises an effective amount of a colorant to color the ink an effective amount of a propellant to propel the ink and a binder comprising a liquid crystalline material present in an amount of at least 30 percent by weight of the ink.
A process for generating images in which the improvement comprises incorporating into an ink jet printing apparatus an ink composition comprising an effective amount of a colorant to color the ink, an effective amount of a propellant to propel the ink and a binder comprising a liquid crystalline material present in an amount of at least 30 percent by weight of the ink, and forming images by melting the ink and causing the melted ink to be expelled in droplets onto a substrate, thereby generating an image on the substrate.
Dependencies are inferred from the claim text.