Reduced memory usage for delay buffer during printing swaths...

Details Reduced memory usage for delay buffer during printing swaths... Reduced memory usage for delay buffer during printing swaths...

2006-06-08

2008-09-16

Nguyen, Lam S (Department: 2853)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S040000, C347S041000

Reexamination Certificate

active

07425054

ABSTRACT:
Disclosed is a method for printing swaths of an image in an inkjet printer with reduced memory usage for delay buffer. The present invention provides methods for allocating a memory space of M1, and M2, for the delay buffer, where M1equals N*S*(P+1)/2, and M2equals N*S*(P−1)/2, wherein N is the number of nozzles in a color bank of a printhead, S is the horizontal swath resolution and P is the minimum number of pass required to print the image. The proposed methods lower the hardware requirement of the physical memory by saving up to about 50% of the physical memory by implementing a memory space of M1and more than 50% of physical memory may be saved by implementing a memory space of M2.

REFERENCES:
patent: 5574832 (1996-11-01), Towery et al.
patent: 6039434 (2000-03-01), Moroney
patent: 6154233 (2000-11-01), Breswick

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