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7. How to Enter Mark

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7. How to Enter Mark

(1) Dimensions of mark : Width = 3.5 to 5.0mm

Thickness = 0.4mm or moe

(2) Writing implements : Pencil of HB or softer, OCR marker, mechanical pencil

(infrared visible light specifications: The above + ball-point pen)

(3) Density : PCS = 0.7 min. (*1)

(4) Typical entries

Note:

When using a mechanical pencil, be sure to enter a mark with enough density.

(*1)

PCS = Printed Contrast Signal

It refers to the contrast in reflectance of a printed mark, symbol or letter against the non-printed

part of paper. It is calculated as follows:

PCS = (white reflectance - black reflectance)/white reflectance

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Sekonic SR-430 Specifiche Pagina 34