Xerox

Exemplary aspects include heating the media and drying the ink by forced convection generated from a Coanda heater. By providing and heated air flow over a curved surface, a low pressure Bernoulli effect will acquired the media to glide over the heated forced air. Similarly, by providing a cold air over a curved surface, the media will be acquired by the same low pressure principle. The cold air will cool down the media by forced convection. Direct forced air is an efficient way to heat or cool the media. An upper flow on top of the media will facilitate the removal of the evaporated ink water and solvent. The solvent could be captured by a filter. Air heaters are significantly cheaper than infrared lamps and more robust.

Methods and systems for detecting one or more infrared (IR) security marks embedded in a document include receiving a document including one or more regions of interest (ROIs), wherein the ROIs correspond to pre-defined locations in the document. Thereafter, the ROIs are processed to generate a plurality of arrays of counters corresponding to each ROI. Once generated, the plurality of arrays of counters are analyzed to identify a plurality of transition points corresponding to each ROI including the IR security mark. Thereafter, the transition points are used to calculated the size of the one or more IR security marks. Then, the calculated size is compared with the one or more IR security marks with a pre-defined size and, based on the comparison, the one or more IR security mark embedded in the document are detected for further analysis.

The present disclosure discloses methods and systems for extracting an infrared (IR) security mark from a document. The method includes receiving a document including the IR security mark. A portion of the document including the IR security mark is extracted and a color information is obtained, wherein the color information includes at least one of a foreground color information and an adjacent foreground color information. One or more portions of the extracted portion are analyzed based on the foreground color information, to generate a foreground image including one or more foreground portions. One or more portions adjacent to the one or more foreground portions in the extracted portion are analyzed based on the adjacent foreground color information, to generate an adjacent foreground image. The foreground image and the adjacent foreground image are processed to extract the IR security mark.

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