Generation of print data for printing
View Patent ↗A method for printing in which print data is first generated by receiving compressed page data having a layer of continuous tone data and a layer of bi-level data; decompressing the continuous tone data and the bi-level data in parallel processes; halftoning the continuous tone data; and compositing the bi-level data over the continuous tone data. The print data is then provided to a print engine controller for printing onto a substrate.
1. A method for printing comprising
generating print data by:
receiving compressed page data having a layer of continuous tone data and a layer of bi-level data;
decompressing the continuous tone data and the bi-level data in parallel processes;
halftoning the continuous tone data; and
compositing the bi-level data over the continuous tone data;
providing said print data to a print engine controller;
printing said print data onto a substrate.
2. A method as claimed in claim 1 , in which the compressed page data is written to a page buffer prior to the step of decompressing the continuous tone data and the bi-level data.
3. A method as claimed in claim 1 , in which the de-compressed continuous tone data and the decompressed bi-level data are written to respective buffers prior to the step of compositing the bi-level data over the continuous tone data.