Granted Patent B2

US 8,184,304 · App. 11/985,917 · Granted May 22, 2012

Abstract

Claims (28)

1. A system for printing a page on a substrate, wherein the page is designated by a page description language representation, wherein the system comprises:

a first print unit for printing a color on a first portion of the substrate;

a second print unit for printing the color on a second portion of the substrate wherein the first and second portions of the substrate do not substantially overlap;

a first RIP that determines a first portion of the page description language representation to rasterize and rasterizes the first portion of the page description language representation to generate a first raster image representation, wherein the first raster image representation is used by the first print unit to print a first portion of the page on the first portion of the substrate; and

a second RIP that determines a second portion of the page description language representation different than the first portion of the page description language representation and rasterizes the second portion of the page description language representation to generate a second raster image representation, wherein the second raster image representation is used by the second print unit to print a second portion of the page on the second portion of the substrate.

2. The system of claim 1 further comprising a controller, wherein the controller controls the first print unit in accordance with the first raster image representation.

3. The system of claim 2 , wherein the first print unit comprises an inkjet head and the controller controls ejection of ink from the nozzles of the inkjet head.

4. The system of claim 3 , wherein the first print unit uses electrophotography.

5. The system of claim 1 , wherein the first print unit prints a portion of a further page adjacent to the first portion of the page, wherein the second page is designated by a further page description language representation.

6. The system of claim 5 , wherein the first RIP rasterizes the page description language representation and the further page description language representation to generate the first raster image representation.

7. The system of claim 6 , wherein the first RIP develops a display list that comprises elements designated in the page description language representation and the further page description language representation.

8. The system of claim 1 , wherein the first RIP includes a page buffer that is larger than the first raster image representation.

9. The system of claim 8 , wherein a raster representation of an element designated in the page description language representation is stored in the page buffer, wherein a portion of the stored raster representation of the element is not used by the first print unit.

10. The system of claim 1 , wherein a portion of the RIP is implemented using an FPGA or an ASIC.

11. A method for printing a page on a substrate, wherein the page is designated by a page description language representation, wherein the method comprises the steps of:

determining and rasterizing a first portion and a second portion of the page description language representation to generate a first and a second raster image representation, respectively, wherein the first and second portions are determined by first and second raster image processors, respectively, and the first and second raster image representations are generated by first and second raster image processors, respectively;

controlling a first print unit to print a color in accordance with the first raster image representation to print thereby the first portion of the page on a first portion of the substrate, wherein the first portion of the page is less than the entirety thereof;

controlling a second print unit to print the color in accordance with the second raster image representation to print thereby the second portion of the first page on a second portion of the substrate; and

wherein the first portion of the page description language representation is different than the second portion of the page description language representation and the first and second portions of the substrate do not substantially overlap.

12. The method of claim 11 , wherein the step of controlling the first print unit comprises the further step of controlling the first print unit to print a portion of a second page, wherein the second page is designated by a second page description language representation and wherein the portion of the second page is printed adjacent to the first portion of the first named page.

13. The method of claim 11 , wherein the method comprises the step of merging a template with data from a database to develop the page description language.

14. The method of claim 11 , wherein the step of controlling the first print unit comprises the further step of controlling ink jet head in accordance with the raster image representation.

15. The method of claim 11 , wherein the step of rasterizing the page description language representation comprises the step of creating a display list.

16. The method of claim 11 , wherein the first and the second raster image representations are identical.

17. The method of claim 11 , wherein the step of rasterizing the first portion of the page description language includes the step of rasterizing an element designated in the first page description language representation.

18. The method of claim 17 , wherein the raster image processor includes a page buffer and the method comprises the step of adding a raster image representation of the element to the page buffer.

19. The method of claim 18 , wherein the step of adding the raster image representation of the element to the page buffer comprises the step of adding a portion of the raster image representation of the element that is not printed by the first print unit.

20. The system of claim 1 , wherein the first portion and the second portion of the page description language are not identical.

Assignments (21)