Retroiluminación día/noche

The type of printer, inks and media being used makes a radical difference in the appearance of the final print. Laser-based digital photo imagers like the LightJet have the most scope for adjustment. Prints from these machines tend to have the most brilliant backlit qualities. They can easily be adjusted to almost any density and color range, but are not perfect. The prints fade rapidly, are not water-resistant and can be expensive.

In general, backlit images are meant to be viewed only when a light source is behind the image. Occasionally, however you may need to create a backlit image that can will be viewed when face-lit with natural light in the daytime, and also at night when the image is illuminated from behind. The problem is that a print that looks good when backlit needs to be have a heavy ink load. It needs to be dark and dense to compensate for strong backlighting. But that same print will look terrible in a front-lit application. Here are some tips to get around the problem.

• Print the graphic twice using non-backlit print density with a thin translucent white backing between the two print layers.
• When the backlighting is off, only the top layer can be seen because the white inner layer blocks the second print.
• Cuando la caja se ilumina, la luz brilla a través de todas las capas, dándole la densidad adicional que requiere la retroiluminación.
• Utiliza una buena mesa de luz cuando montes las tres capas. Tener una coincidencia exacta de las dos impresiones es crucial.
• Asegúrese de que la iluminación de la caja de luz que elija ofrezca una firma de color que sea aceptable para el cliente (tanto los sistemas de iluminación fluorescentes como los LED presentan diferentes conjuntos de proyecciones de color).