BAKED PRINTING OF REINFORCED GLASS

摘要

PURPOSE:To perform a printing with a high quality efficiently on a glass of a wrist watch or the like without causing a difference in the baking adhesivity by baking a pattern on the reinforced glass arranged on a substrate high in the transmissivity for infrared rays with the irradiation of infrared rays. CONSTITUTION:When a pattern 1 is formed on a reinforced glass 2 by screen printing and undergoes a baking treatment, the reinforced glass 2 is arranged on a substrate (e.g. Pyrex glass, transparent quartz plate)4 high in the transmissivity for infrared rays and infrared rays irradiates it from an infrared ray lamp 3 to bake the pattern 1. EFFECT:There is no thermal effect on the reinforced glass body as the concentration of heat energy is possible on the pattern forming part. The use of the above- mentioned substrate allows the heating of the substrate by infrared rays passing through a part of the reinforced glass to prevent the lowering of the strength thereof otherwise caused by reverse transfer of heat to the glass.