摘要:
A system and method create 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 marking material comprises 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. A predetermined amount of additional marking material is further deposited upon the medium in the authentication image area to increase an amount of marking material associated with the marking material authentication image in the authentication image area. The fixed marking material associated with the authentication image area is a tactilely perceptible authentication mark having a height, with respect to a surface of the medium, that is tactilely perceptible, wherein the fixed marking material associated with the marking material image area is tactilely non-perceptible.
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:
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:
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:
Methods of controlling gloss of an image are disclosed. The methods may include forming an image over a substrate by applying an ink composition and optionally an overcoat composition at least partially over the substrate. The ink composition or overcoat composition may include at least one gellant, at least one curable monomer, optionally at least one curable wax and optionally at least one photoinitiator. The ink composition or overcoat composition may be curable upon exposure to radiation. The methods may further include providing a micro-roughness to one or more portions of the ink composition or overcoat composition by non-uniformly curing the ink composition or overcoat composition, and flood curing the ink composition or overcoat composition to complete a cure. The methods may thereby provide a controlled gloss level to the image.
摘要:
A compound of the formula wherein R1 and R1′ are the same, and wherein R1 and R1′ are each aromatic groups; 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.
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:
A system and method for preparing conductive features on a substrate including printing a radiation curable phase change gel masking material in a pattern of fillable channels on a surface of a substrate; curing the radiation curable phase change gel masking material; depositing a conductive material in the fillable channels; annealing the conductive material; and, optionally, removing the radiation curable phase change gel masking material. In embodiments, ultra-violet curable phase change gel is used to digitally prepare a pattern of dams for containing a thick layer of conductive material which is annealed to form an electronic structure.