Disclosed herein is an electrostatic ink composition comprising a component selected from a fatty acid ester having a plurality of hydroxyl substituents and a fatty acid amide having a plurality of hydroxyl substituents. Also described herein are scratch-off structures and methods for producing them.

A color changing expiration indicator includes a reactive layer and a first barrier layer that covers at least a portion of the reactive layer. The color changing expiration indicator also includes a transmission layer that covers at least a portion of the first barrier layer, and a second barrier layer that covers at least a portion of the transmission layer. The color changing expiration indicator further includes a reactant layer that covers at least a portion of the second barrier layer. The reactant layer changes color responsive to a reaction that occurs between the reactant layer and the reactive layer.

In one example of the disclosure, a substantially transparent substrate is provided at a printer. A primer layer is applied upon a first surface of the substrate. A security ink layer that includes security information is applied upon the primer layer. An opaque background ink layer is applied upon the security ink layer. A corona treatment is applied to a second surface, located on an opposite side of the substrate relative to the first surface. A release ink layer is applied upon the corona-treated second surface. An opaque cover image ink layer is applied upon the release ink layer.

A textile product is disclosed having a latent image created from water-based ink which is applied using a screen printing process. The image is thereafter hidden underneath a second image created from a plasticizing emulsion such as plastisol which is partially cured. The partial cure causes a portion of the plasticizing emulsion to be removed from the textile product during washing and after repeated washings, the latent image becomes revealed.

A removable scratch-off document with a display portion, printing method and system ensuring the integrity and security of the document with variable win and lose variable information protected by a scratch-off coating by overprinting at least one of at least a part of the scratch-off coating and at least a part of the display portion using stochastic imaging. The resulting printed document is more attractive and consistent over varying surfaces, as well as more secure against illicit attempt to remove the scratch-off coating by lift and float techniques.

A printer system includes a memory, a processor, and one or more printer heads. The processor determines a number of transmission layers and a number of barrier layers to use in a color changing expiration indicator based at least in part on a time period between a print date of the indicator and a received expiration date. The printer heads print a reactive layer onto print media, where at least a portion of the reactive layer is configured to migrate through the transmission layers. The printer heads also print the determined number of transmission layers and the determined number of barrier layers in alternation. The printer heads print a reactant layer that is configured to change color responsive to a reaction between the reactant layer and the reactive layer upon migration of the reactive layer through the transmission layers. The reaction is configured to occur on the received expiration date.

Disclosed herein is an electrostatic ink composition comprising a component selected from a fatty acid ester having a plurality of hydroxyl substituents and a fatty acid amide having a plurality of hydroxyl substituents. Also described herein are scratch-off structures and methods for producing them.

A direct thermal printable construct, such as a ticket, game piece, coupon, collection piece, label, security card, or voucher includes a thermally printable medium and a metallized layer bonded directly or indirectly to the thermally printable medium. A thermosensitive imaging layer of the thermally printable medium is printable by exposing the metallized layer to localized heat of a thermal printer for inducing local changes in the color of the thermosensitive imaging layer that are obscured from view through both the metallized layer and a base substrate of the thermally printable medium. One or more areas of the metallized layer are arranged to be removable by a scratching action using a fingernail or coin for revealing the underlying local changes in the color of the thermosensitive imaging layer.

Disclosed herein is a pop-up or three-dimensional gloss card including a substantially flat gloss layer having at least one color chip with a predetermined gloss finish, and a top layer defining at least one window. The top layer is positioned on top of the gloss layer so that the at least one color chip is visible through the at least one window. The gloss card also has an activator that reversibly bends the gloss layer so that the at least one color chip protrudes through the at least one window to exhibit the gloss finish of the color chip.

A system and method are described for the production of color selection swatch cards for point of purchase displays of custom blended paints, textiles or plastics using a digital inkjet printer and custom blended inkjet inks based on a set of base inks that can be blended using commercial match prediction software. The base inks are matched spectrally to the base paints, dyes or plastics.