9,098,022 - Generating differential gloss image using laser energy

US Patent No. 9098022
US Patent No. 9,098,022 - Prepared by Attorney David Tran for Xerox Corporation and filed by Prass, LLP
 
Brief Description:  FIG. 3A is an exemplary diagram of a material having a substrate with an ink or toner image in accordance with one possible embodiment of the disclosure. Material 300 may include a substrate 305 and a toner image 310. The toner image 310 (or a first layer) may be of any form. The substrate 305 (or second layer) may be flexible (e.g., paper, transparency, etc.) The toner image 310 may be a film of certain thickness (e.g., five microns) with some embedded pigments. The pigments may absorb the laser power and may reach a high temperature causing the toner image 310 to melt. The substrate 305 may serve as a heat sink that takes the heat away and cools down the toner image 310. The cooling of the material 300 may also be performed by the cooling section 255 (shown in FIG. 2).   Under regular condition, the toner image 310 may have uniform gloss. The toner image 310 is illustrated in this example as generally flat. For example, the material (or combination of the substrate 305 and the toner image 310) may be a print. In general, for photography or print applications, the common finishes desirable by the consumers are glossy finish and matte finish.  FIG. 3B is an exemplary diagram that illustrates one embodiment of generating differential gloss using a laser imager in accordance with one possible embodiment of the disclosure. In general, differential gloss refers to a glossy finish that may be achieved by providing a contrast of more glossy areas and less glossy areas. For example, surfaces with greater roughness will typically be less glossy. By modulating the surface roughness in an image-wise fashion, an image with distinct gloss contrast can be created.  For some embodiments, the laser imager 250 may be used to apply laser energy onto certain areas of the ink or toner image 310. The laser energy may be applied in short pulse and may be sufficiently high power to cause the ink or toner image to melt. This may cause the surface of the ink or toner image 310 of FIG. 3A to become rough. 
 

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