摘要:
This disclosure is generally directed to curable gel inks, such as radiation-curable phase-change inks, and their use in forming images, such as through inkjet printing. More specifically, this disclosure is directed to radiation-curable gel inks, such as ultraviolet-light-curable phase-change inks, that comprise a curable gellant and a curable solid.
摘要:
A system and method for creating an authentication mark on a recording medium by depositing marking material on a medium in an image area to create a marking material image and to create a marking material authentication image. The method comprises (a) depositing marking material directly onto a recording medium in an image area to create a marking material image and in an authentication image area to create a marking material authentication image, wherein the marking material is an ultraviolet curable phase change ink composition comprising an optional colorant and a phase change ink vehicle comprising a radiation curable monomer or prepolymer; a photoinitiator; a reactive wax; and a gellant; (b) depositing a predetermined amount of additional marking material upon the authentication image area to increase an amount of marking material associated with the marking material authentication image in the authentication image area; and (c) curing the marking material upon the recording medium such that the fixed marking material associated with the authentication image area is a tactilely perceptible authentication mark, the fixed marking material associated with the tactilely perceptible authentication mark having a first height, the first height being tactilely perceptible.
摘要:
Disclosed herein are amide gellant compositions with aromatic end-caps consisting of a blend of oligomers (dimer, trimer, tetramer and pentamer) that may be optimized to stable gelling viscosity and controlled showthrough of printed inks.
摘要:
Curable, phase-change compositions and inks used for printing three-dimensional objects including a curable monomer, a photoinitiator, a wax and a gellant, where the composition of the cured formulation has a room temperature modulus of from about 0.01 to about 5 Gpa. The curable monomer includes acrylic monomer, polybutadiene adducted with maleic anhydride, aliphatic urethane acrylate, polyester acrylate, 3-acryloxypropyltrimethoxysilane, or acryloxypropyl t-structured siloxane.
摘要:
Curable solid inks and low shrinkage curable solid inks which are solid at room temperature and molten at an elevated temperature at which the molten ink is applied to a substrate. In particular, the solid inks of the present embodiments retain the advantages of handling, safety, and print quality usually associated with conventional solid phase change inks but provide additional breakthrough performance characteristics such as enhanced robustness, lower jetting temperature, and ultra-low shrinkage upon crystallization, which allow the inks to be used as novel materials in inkjet-based Braille and raised print applications.
摘要:
A pigment dispersion includes a pigment and a dispersant, wherein an as formed curable phase change ink having the pigment dispersion added thereto, when filtered using a 1 micron filter at a temperature of 85° C., has a slope of ≧5 g/s and a T2/T1 of ≦1.6, wherein T2 represents a time to filter the last 25 g of a 100 g sample of the phase change ink through the 1 micron filter at 85° C., while T1 represents the time it takes to filter the first 25 g of the 100 g sample of the phase change ink through the 1 micron filter at 85° C.
摘要:
Disclosed is a phase change ink comprising a colorant, an initiator, and a phase change ink carrier, said carrier comprising at least one radically curable monomer compound and a compound of the formula wherein R1 and R1′ are the same, and wherein R1 and R1′ are each an aromatic group; and wherein R2 and R2′ and R3 each, independently of the others, are alkylene groups, arylene groups, arylalkylene groups, or alkylarylene groups; or wherein, in embodiments, R1 and R1′ can be the same or different, and wherein R1 and R1′ each, independently of the other is an alkyl group having a least one ethylenic unsaturation, an arylalkyl group having at least one ethylenic unsaturation, an alkylaryl group having at least one ethylenic unsaturation, or an aromatic group, provided that at least one of R1 and R1′ is an aromatic group; and provided that neither of R1 or R1′ is a photoinitiator group. Also disclosed herein is a method of printing with the phase change ink.
摘要:
Urea-urethane gellant compositions and methods of preparing the urea-urethane gellant compositions. The method includes adding an isocyanate, an alcohol or a diamine, and a solvent to a reaction vessel; stirring the reaction vessel at either ambient or elevated temperature; isolating an intermediate product from the reaction vessel; and converting the intermediate product to the organic gellant. The urea-urethane gellants are prepared in a manner to control the molecular weight and control the formation of dimers and trimers. The gellants may be used in curable gel inks.
摘要:
A phase change ink includes an ink vehicle that includes at least one curable carrier, at least one gellant, at least one wax and at least one alkoxysilane monomer. In a method of forming an image with the ink, the phase change ink is melted, then jetted onto an image receiving substrate, wherein the phase change ink forms a gel state, and exposed to ultraviolet light to cure the curable components of the phase change ink. The alkoxysilane participates in crosslinking to form silicon-oxygen-silicon bonds, thereby producing an ink with advantageous stability and high image quality.
摘要:
Curable solid inks and low shrinkage curable solid inks which are solid at room temperature and molten at an elevated temperature at which the molten ink is applied to a substrate. In particular, the solid inks of the present embodiments retain the advantages of handling, safety, and print quality usually associated with conventional solid phase change inks but provide additional breakthrough performance characteristics such as enhanced robustness, lower jetting temperature, and ultra-low shrinkage upon crystallization, which allow the inks to be used as novel materials in inkjet-based Braille and raised print applications.