HP L5 manual Logical Operations Transparency Interactions

Notes

Logical Operations

and Transparency

Interactions

The Logical Operation command (?*l#O) provides 255 possible logical operations. All of these logic operations map directly to their ROP3 (raster operation) counterparts (see the Microsoft Document, Reference, Volume 2, Chapter 11, Binary and Ternary Raster Operation Codes).

The logical operations were defined by Microsoft Windows for an RGB color space (a ‘‘1’’ is white and a “0” is black).

As described above, transparency modes operate in addition to logical operations. The logical operations in Table 2-5, Logical Operations (ROP3), on the following pages, are true only if source and pattern transparency (for white pixels) are explicitly set to opaque (?*v1N and ?*v1O). If source and/or pattern transparency modes are transparent (defaulted), the additional operations shown on the following page must be performed to achieve the final result.

Printer-Specific Differences 2-15