초록 ▼

A system which utilizes a source of ultraviolet radiation to mark a surface or to cure selectively a photosensitive paint applied to a surface. The source of UV light is either a laser or a broadband source and the light is controlled by an aperture and/or a stencil apparatus. The photosensitive pai

A system which utilizes a source of ultraviolet radiation to mark a surface or to cure selectively a photosensitive paint applied to a surface. The source of UV light is either a laser or a broadband source and the light is controlled by an aperture and/or a stencil apparatus. The photosensitive paint is applied by a controlled technique as a protective or a decorative coating.

대표청구항 ▼

A method of painting a surface of an article, having a changing contour over portions thereof, comprising: coating at least a portion of the surface of the article with a paint which is curable upon being irradiated with light having a given wavelength; irradiating only a portion of the coated surfa

A method of painting a surface of an article, having a changing contour over portions thereof, comprising: coating at least a portion of the surface of the article with a paint which is curable upon being irradiated with light having a given wavelength; irradiating only a portion of the coated surface of the article, in a desired pattern, with a laser beam having a wavelength in said given range to cure the paint contained in the irradiated pattern and leaving the paint outside the irradiated pattern in an uncured state; said irradiating being performed while effecting transverse relative motion between the laser beam and the coated surface and shaping a cross-section of the laser beam into a desired pattern by passing the laser beam through optical shaping means before impingement on the coated surface, said optical shaping means being variable during the irradiating to modify the desired pattern, said optical shaping means also maintaining transverse dimensions of the laser beam received at the coated surface greater than both the paint thickness and the article\s thermal diffusion distance; and, removing the uncured paint from the surface of the article.