Key |
Type |
Value |
---|---|---|
Subtype |
name |
(Optional; PDF 1.6) A name specifying the preferred treatment for the colour space. Values shall be DeviceN or NChannel. Default value: DeviceN. |
Colorants |
dictionary |
(Required if Subtype is NChannel and the colour space includes spot colorants; otherwise optional) A dictionary describing the individual colorants that shall be used in the DeviceN colour space. For each entry in this dictionary, the key shall be a colorant name and the value shall be an array defining a Separation colour space for that colorant (see 8.6.6.4, "Separation Colour Spaces" ). The key shall match the colorant name given in that colour space. This dictionary provides information about the individual colorants that may be useful to some conforming readers. In particular, the alternate colour space and tint transformation function of a Separation colour space describe the appearance of that colorant alone, whereas those of a DeviceN colour space describe only the appearance of its colorants in combination. If Subtype is NChannel, this dictionary shall have entries for all spot colorants in this colour space. This dictionary may also include additional colorants not used by this colour space. |
Process |
dictionary |
(Required if Subtype is NChannel and the colour space includes components of a process colour space, otherwise optional; PDF 1.6) A dictionary (see Table 72 ) that describes the process colour space whose components are included in this colour space. |
MixingHints |
dictionary |
(Optional; PDF 1.6) A dictionary (see Table 73 ) that specifies optional attributes of the inks that shall be used in blending calculations when used as an alternative to the tint transformation function. |