In one embodiment of the invention, photo-chromic and phosphorescent toys are disclosed. A photo-chromic and phosphorescent toy includes both photo-chromic and phosphorescent materials applied to the toy such as through an ink, paint, plastic, or dye. The photo-chromic and phosphorescent materials may be supplied within a material of the toy or applied-to a surface of the toy at the factory. The photo-chromic and phosphorescent materials may be activated in various ways with various light activating devices that can generate an activating light with appropriate wavelengths.

In one embodiment of the invention, photo-chromic and phosphorescent toys are disclosed. A photo-chromic and phosphorescent toy includes both photo-chromic and phosphorescent materials applied to the toy such as through an ink, paint, plastic, or dye. The photo-chromic and phosphorescent materials may be supplied within a material of the toy or applied-to a surface of the toy at the factory. The photo-chromic and phosphorescent materials may be activated in various ways with various light activating devices that can generate an activating light with appropriate wavelengths.

The present invention concerns a method for manufacturing patterned porous substrates with hidden color patterns by forming hydrophobic patterns on a hydrophilic surface, wherein structural channels are formed as a pattern in a porous substrate using a hydrophobic printing solution lacking colorant, and wherein a colored area is applied on the rear surface of the porous substrate. Further, the present invention concerns said patterned porous substrate and a method for bringing said pattern into a visible state.

The invention is an outer layer obscuring an image on a base layer on a receptacle. When illuminated, the obscured image or images are revealed. The base layer is disposed on the exterior wall of the receptacle. The base layer has an image. The outer layer is disposed on the first layer and it can also include an image but it can be without any image at all. The outer layer obscures the first layer. An illuminating source is placed inside the wall of the receptacle. When illuminated, the first image on the base layer is visible through the outer layer. The second image of the outer layer can be observed to form a new combined image with the first image of the base layer.

A display including one or more first relief structures is provided. Each of the one or more first relief structures includes a smooth first reflection surface and a plurality of protrusions or recesses. Each top surface of the protrusions or each bottom of the recesses is a smooth second reflection surface parallel to the first reflection surface. Each of the one or more first relief structures is configured to display a mixed color as a structural color by mixing a plurality of wavelength components of visible light wavelengths. Also provided is a labeled article that includes the display, and an article supporting the display.

A display including one or more first relief structures is provided. Each of the one or more first relief structures includes a smooth first reflection surface and a plurality of protrusions or recesses. Each top surface of the protrusions or each bottom of the recesses is a smooth second reflection surface parallel to the first reflection surface. Each of the one or more first relief structures is configured to display a mixed color as a structural color by mixing a plurality of wavelength components of visible light wavelengths. Also provided is a labeled article that includes the display, and an article supporting the display.

Dynamically-variable graphic displays, including a panel comprised of a plurality of electrostatic particles and a plurality of electrodynamic contacts supported within a nonconductive substrate, wherein each electrostatic particle is situated within a channel in the nonconductive substrate such that the nonconductive substrate comprises a plurality of channels oriented in one direction. Also included within the invention are dynamically-variable graphic display panels comprising electrostatic particles that each comprise a plurality of sectors, each having a different color and a fixed magnetic polarity relative to said sectors, and a plurality of electrodynamic contacts, each contact located adjacent to an electrostatic particle and positioned for interaction with one of the electrostatic particles.

The disclosure provides apparatus and methods of manufacture pertaining to a layered artwork that provides the illusion of depth, or three-dimensional volume, and that shifts in color and spatial relationships as a viewer moves in relation to the artwork or as the light cast upon the artwork changes in intensity, angle, and/or color. The layered artwork may include a base image reproduced on a rigid substrate and at least one top image reproduced on one or more translucent substrates. The translucent substrates may be suspended above the rigid substrate such that a viewer sees both the base and top images when viewing the artwork. Other embodiments are also disclosed.

The disclosure provides apparatus and methods of manufacture pertaining to a layered artwork that provides the illusion of depth, or three-dimensional volume, and that shifts in color and spatial relationships as a viewer moves in relation to the artwork or as the light cast upon the artwork changes in intensity, angle, and/or color. The layered artwork may include a base image reproduced on a rigid substrate and at least one top image reproduced on one or more translucent substrates. The translucent substrates may be suspended above the rigid substrate such that a viewer sees both the base and top images when viewing the artwork. Other embodiments are also disclosed.

In one embodiment, a computing device determines a Completely Automated Public Turing Test to Tell Computers and Humans Apart (CAPTCHA). The CAPTCHA includes a first static image that has image sections that are arranged in a first order. Each of the image sections corresponds to a unique identifier. The CAPTCHA further includes a second static image that includes each of the image sections of the first static image that are arranged in a second order. The computing device generates web-browser-executable code for converting the second static image to the first static image based on the first static image, the first order, and the unique identifiers. The computing device sends the second static image and the web-browser-executable code to a client device.