Key |
Type |
Value |
---|---|---|
Type |
name |
(Optional) The type of PDF object that this dictionary describes; if present, shall be Halftone for a halftone dictionary. |
HalftoneType |
integer |
(Required) A code identifying the halftone type that this dictionary describes; shall be 10 for this type of halftone. |
HalftoneName |
byte string |
(Optional) The name of the halftone dictionary. |
Xsquare |
integer |
(Required) The side of square X, in device pixels; see below. |
Ysquare |
integer |
(Required) The side of square Y, in device pixels; see below. |
TransferFunction |
function or name |
(Optional) A transfer function, which shall override the current transfer function in the graphics state for the same component. This entry shall be present if the dictionary is a component of a type 5 halftone (see “Type 5 Halftones” in 10.5.5.6 ) and represents either a nonprimary or nonstandard primary colour component (see 10.4, "Transfer Functions" ). The name Identity may be used to specify the identity function. |