The present invention relates to a cover member including a transparent base having first and second main surfaces, an antifouling layer formed on at least a part of the first main surface, a printed layer formed on at least a part of the second main surface, and an adhered member adhered on an antifouling layer-side surface, in which when an adhered-member-contact-portion projected region is defined as a prescribed region in the second main surface, the printed layer is provided on at least a part of a near-boundary region defined as a region from a boundary of the adhered-member-contact-portion projected region to an inward at 1,000 μm from the boundary, and no printed layer is provided on at least a part of an inner region defined as a region 500 μm or more inside from the boundary of the adhered-member-contact-portion projected region.

In a laser irradiation apparatus 1 according to one embodiment, each of first and second flotation units 30a, 30b includes a base 31, and a porous plate 32 bonded to an upper surface of the base 31 by an adhesive layer 34, the base 31 includes a rising portion 312 protruding upward at an outer periphery facing at least the gap, and the porous plate 32 includes a cutout portion 321 configured to fit to the rising portion 312, and the adhesive layer 34 is formed along an inner wall of the rising portion 312 having fitted to the cutout portion 321.

In a laser irradiation apparatus 1 according to one embodiment, each of first and second flotation units 30a, 30b includes a base 31, and a porous plate 32 bonded to an upper surface of the base 31 by an adhesive layer 34, the base 31 includes a rising portion 312 protruding upward at an outer periphery facing at least the gap, and the porous plate 32 includes a cutout portion 321 configured to fit to the rising portion 312, and the adhesive layer 34 is formed along an inner wall of the rising portion 312 having fitted to the cutout portion 321.

A surface treatment composition including a perfluoropolyether group-containing silane compound and a solvent, wherein a proportion of the perfluoropolyether group-containing silane compound based on a total amount of the perfluoropolyether group-containing silane compound and the solvent is in the range from 30 to 99% by mass.

A method of applying a coloured coating to a decorative element such as a gemstone. The method comprises: providing an ink mixture comprising an ink and an organic carrier, the carrier comprising a polymerisable organic material; arranging the ink mixture and the decorative element in a plasma; and allowing the ink mixture to polymerise on a surface of the decorative element to form a polymerised colour coating. The polymerisable organic material may comprise a polymerisable siloxane or a polymerisable oxysilane.

A method of applying a coloured coating to a decorative element such as a gemstone. The method comprises: providing an ink mixture comprising an ink and an organic carrier, the carrier comprising a polymerisable organic material; arranging the ink mixture and the decorative element in a plasma; and allowing the ink mixture to polymerise on a surface of the decorative element to form a polymerised colour coating. The polymerisable organic material may comprise a polymerisable siloxane or a polymerisable oxysilane.

The disclosure is directed to a chemically strengthened glass having antimicrobial properties and to a method of making such glass. In particular, the disclosure is directed to a chemically strengthened glass with antimicrobial properties and with a low surface energy coating on the glass that does not interfere with the antimicrobial properties of the glass. The antimicrobial has an Ag ion concentration on the surface in the range of greater than zero to 0.047 μg/cm.sup.2. The glass has particular applications as antimicrobial shelving, table tops and other applications in hospitals, laboratories and other institutions handling biological substances, where color in the glass is not a consideration.

The disclosure is directed to a chemically strengthened glass having antimicrobial properties and to a method of making such glass. In particular, the disclosure is directed to a chemically strengthened glass with antimicrobial properties and with a low surface energy coating on the glass that does not interfere with the antimicrobial properties of the glass. The antimicrobial has an Ag ion concentration on the surface in the range of greater than zero to 0.047 μg/cm.sup.2. The glass has particular applications as antimicrobial shelving, table tops and other applications in hospitals, laboratories and other institutions handling biological substances, where color in the glass is not a consideration.

An antiglare glass substrate includes a glass substrate having a first main surface and a second main surface that is opposite to the first main surface. The first main surface has undergone an antiglare treatment and a fluorine-containing organosilicon compound coating film as an antifouling film is laminated thereon. The first main surface partly includes a non-antiglare-treated portion that has not undergone the antiglare treatment. The non-antiglare-treated portion has a surface roughness Ra of less than 10 nm. A difference in height along a plate thickness direction of the glass substrate between the antiglare-treated portion that has undergone the antiglare treatment and the non-antiglare-treated portion is 10 μm or larger and 200 μm or less.

An antiglare glass substrate includes a glass substrate having a first main surface and a second main surface that is opposite to the first main surface. The first main surface has undergone an antiglare treatment and a fluorine-containing organosilicon compound coating film as an antifouling film is laminated thereon. The first main surface partly includes a non-antiglare-treated portion that has not undergone the antiglare treatment. The non-antiglare-treated portion has a surface roughness Ra of less than 10 nm. A difference in height along a plate thickness direction of the glass substrate between the antiglare-treated portion that has undergone the antiglare treatment and the non-antiglare-treated portion is 10 μm or larger and 200 μm or less.