Patent ID: 6946035

Claim:
A method producing a glass sheet having a surface provided with an ITO, said method comprising: a first step of providing the glass sheet with the ITO; a second step of conveying the glass sheet with the ITO to an ultraviolet ray-irradiation unit; a third step of irradiating with ultraviolet rays the surface of the glass sheet with the ITO within the ultraviolet ray-irradiation unit, the ultraviolet rays having wavelengths of 184.9 nm and being applied in an oxygen-containing gas atmosphere; a fourth step of conveying the ultraviolet ray-irradiated glass sheet with the ITO to a wet cleaning unit; and a fifth step of washing with pure water the ultraviolet ray-irradiated glass sheet with the ITO within the wet cleaning unit, said fifth step being commenced within a period in which the effect of the ultraviolet ray-irradiation is not lost.