Patent ID: 6028320
Filing Date: 2000-02-22
Classification: B41J,G01N

Abstract:
A printing device, comprising:a sheet of print media having at least one mark thereon that indicates a characteristic of the sheet of print media, the mark fluorescing at a second predetermined wavelength of light in response to absorption of a first light signal of a first predetermined wavelength;a printing mechanism for printing on the sheet of print media;a controller that controls operation of the printing mechanism; anda detector that detects fluorescing of the mark on the sheet of print media and transmits in response to this detection data indicative of this mark to the controller, the detector including a bandstop filter that is configured to block the first predetermined wavelength of the first light signal and to transmit other wavelengths of light, including the second predetermined wavelength of the second light signal;wherein the controller is configured to utilize this data as a factor in controlling operation of the printing mechanism.