초록 ▼

Novel electrographically produced products are disclosed which include large format posters, billboards and the like produced by a process employing a novel electrographic element which includes a base, a release layer and a combined transparent dielectric and adhesive layer which is substantially t

Novel electrographically produced products are disclosed which include large format posters, billboards and the like produced by a process employing a novel electrographic element which includes a base, a release layer and a combined transparent dielectric and adhesive layer which is substantially tack-free, at ambient pressure and temperature. The new product is made by an imaging process involving: A) producing a toned image layer on the surface of the electrographic element and B) pressure laminating a receptor substrate at an elevated temperature to the toned image layer to form the completed electrographic image. The base and release layer may be stripped from the dielectric/adhesive layer which then serves to protect the transferred, toned, electrographically generated image from abrasion and environmental contaminants.

대표청구항 ▼

An imaged article comprising in the order given: 1) a receptor substrate; 2) a toned image; 3) a single, continuous transparent layer comprising an adhered combined adhesive and dielectric layer which is substantially tack-free at ambient temperature and which has a dielectric constant of about 2 to

An imaged article comprising in the order given: 1) a receptor substrate; 2) a toned image; 3) a single, continuous transparent layer comprising an adhered combined adhesive and dielectric layer which is substantially tack-free at ambient temperature and which has a dielectric constant of about 2 to 5, wherein the image and transparent layer have been placed on the substrate by a process comprising the steps of: A) electrographically depositing an electrostatic charge in image-wise fashion onto an image receptive surface of an electrographic element comprising in the order given; i) a conductive base, ii) a release layer, and iii) the single, transparent, combined dielectric and adhesive layer, wherein said combined dielectric and adhesive layer is substantially tack-free at ambient temperature, and is activated at a temperature which is above ambient temperature of the electrographic element, and has a dielectric constant of about 2 to 5, the image receptive surface being an exposed surface of said single combined dielectric and adhesive layer, to form a latent image; B) applying a toner layer onto said electrostatic charge to produce a toned image; C) contacting said toned image and combined adhesive and dielectric layer with a surface of the receptor substrate at a temperature sufficient to activate the combined dielectric and adhesive layer to adhere the electrographic element to the substrate and D) removing the conductive base and the release layer from the combined dielectric and adhesive layer of the electrographic element adhered onto the receptor substrate following step (C), to form the imaged article.