Abstract: A method for determining a type of paper and for determining printing parameters based on the type of paper, the method includes the steps of (a) illuminating a paper sequentially with an short wavelength radiation and a long wavelength radiation; detecting a fluorescence signal resulting from the short wavelength radiation and a long wavelength signal resulting from the long wavelength radiation; determining a paper type from a plurality of paper types based on the fluorescence signal and second long wavelength signal; and adjusting the printing parameters based on the determined paper type.

Abstract: A printer that determines paper type includes a first short and long wavelength radiation source located on a first side of paper which first radiation source sequentially outputs a short wavelength radiation and a long wavelength radiation onto the first side of the paper that reflects the long wavelength radiation and the short wavelength radiation is absorbed by the paper and emitted as long wavelength fluorescence radiation; one or more first detectors located on the first side of the paper and each detector detects a long wavelength fluorescence signal resulting from the short wavelength radiation source of the first radiation source and a reflectance signal resulting from the long wavelength radiation source of the first short and long wavelength radiation source; a second short and long wavelength radiation source located on a second side of the paper which second short wavelength and long wavelength radiation source sequentially outputs a short wavelength radiation and a long wavelength radiation onto

Abstract: A printer that determines paper type includes one or more light sources sequentially outputting a short wavelength radiation and a long wavelength radiation onto a paper that transmits the long wavelength radiation and the short wavelength radiation is absorbed by a fluorescent compound in the paper resulting in the emission of long wavelength fluorescent radiation; a first detector that detects a long wavelength fluorescence signal resulting from the short wavelength source and a transmittance signal resulting from the long wavelength source; and a lookup table that determines a paper type from a plurality of paper types based on the fluorescence signal and transmittance signals.

Abstract: An inkjet printer includes a paper tray for holding print media; a pick-up roller for moving the print media along at least a portion of a pre-print zone of a paper transport path; a light source disposed along the pre-print zone of the paper transport path that directs light toward a non-print side of the print media for illuminating the non-print side of the print media; and an array sensor that receives reflected light from the non-print side of the print media; wherein data from the sensor is used to determine an amount of motion of the print media in the pre-print zone.

Abstract: An inkjet printer includes a paper tray for holding print media; a pick roller for moving the print media through a paper transport path; and an encoder disk, which senses motion of the print media, disposed in the paper transport path and in direct contact with the print media as the print media passes through the paper transport path.

Abstract: The present invention relates to a method of aligning comprising providing a support, applying a transparent layer, patterning at least the transparent layer to produce a pattern and an alignment feature capable of scattering light, illuminating the support and the transparent layer with oblique lighting, providing an analysis system capable of sensing scattered light from the alignment feature and referencing, sensing the scattered light from the alignment feature; referencing the scattered light from the alignment feature to a position on said support; and aligning a second operation to the position.