Method of interlaced printing using an ink jet printer
First Claim
1. A method of printing on a print medium with an ink jet printer using a first color ink, a second color ink and a black ink, said method comprising the steps of:
- defining an image area on the print medium having a plurality of pixel locations;
providing print image data indicating one of a presence and an absence of the first color ink, the second color ink and the black ink at said plurality of pixel locations;
defining a subset of said print image data;
determining if said subset of said print image data indicates at least one of;
a presence of at least one of the first color ink and the second color ink within said subset and a presence of the black ink within said subset;
a presence of each of the first color ink and the second color ink within said subset at a same corresponding pixel location; and
a presence of at least one of the first color ink and the second color ink within said subset at a number of corresponding pixel locations exceeding a threshold value; and
printing on the print medium in said image area at an interlace level which is dependent upon said determining step.
2 Assignments
0 Petitions
Accused Products
Abstract
A method of printing on a print medium with an ink jet printer uses a first color ink, a second color ink and a black ink. An image area on the print medium has a plurality of pixel locations. Print image data indicate one of a presence and an absence of the first color ink, the second color ink and the black ink at the plurality of pixel locations. A subset of the print image data is defined. A determination is made as to whether the subset of print image data indicates 1) a presence of the first color ink and/or the second color ink within the subset and a presence of the black ink within the subset; 2) a presence of each of the first color ink and the second color ink within the subset at a same corresponding pixel location; and/or 3) a presence of the first color ink and/or the second color ink within the subset at a number of corresponding pixel locations exceeding a threshold value. The print medium is printed on in the image area at an interlace level which is dependent upon the determination.
13 Citations
24 Claims
-
1. A method of printing on a print medium with an ink jet printer using a first color ink, a second color ink and a black ink, said method comprising the steps of:
-
defining an image area on the print medium having a plurality of pixel locations; providing print image data indicating one of a presence and an absence of the first color ink, the second color ink and the black ink at said plurality of pixel locations; defining a subset of said print image data; determining if said subset of said print image data indicates at least one of; a presence of at least one of the first color ink and the second color ink within said subset and a presence of the black ink within said subset; a presence of each of the first color ink and the second color ink within said subset at a same corresponding pixel location; and a presence of at least one of the first color ink and the second color ink within said subset at a number of corresponding pixel locations exceeding a threshold value; and printing on the print medium in said image area at an interlace level which is dependent upon said determining step. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
-
-
15. A method of printing on a print medium with an ink jet printer using a first color ink and a second color ink, said method comprising the steps of:
-
defining an image area on the print medium having a plurality of pixel locations; providing print image data indicating one of a presence and an absence of the first color ink and a second color ink at said plurality of pixel locations; defining a subset of said print image data; determining if said subset of said print image data indicates at least one of; a presence of each of the first color ink and the second color ink within said subset at a same corresponding pixel location; and a presence of at least one of the first color ink and the second color ink within said subset at a number of corresponding pixel locations exceeding a threshold value; and printing on the print medium in said image area at an interlace level which is dependent upon said determining step. - View Dependent Claims (16, 17, 18, 19)
-
-
20. A method of printing on a print medium with an ink jet printer using a first color ink, a second color ink and a black ink, said method comprising the steps of:
-
defining an image area on the print medium having a plurality of rows of pixel locations, said plurality of rows being adjacent to each other in an advance direction of the print medium and extending across the print medium in a transverse direction; subdividing said image area into a plurality of adjacent bands, each said band including a plurality of said rows of pixels; providing print image data indicating one of a presence and an absence of the first color ink, the second color ink and the black ink at corresponding said pixel locations within one of said bands; defining a subset of said print image data corresponding to pixel locations within said one band; determining if said subset of said print image data indicates at least one of; a presence of the first color ink and the second color ink within said subset at a same corresponding pixel location and a presence of the black ink within said subset using the equation;
space="preserve" listing-type="equation">R=(C|M|Y)&
&
K;a presence of each of the first color ink and the second color ink within said subset at a same corresponding pixel location using the equation;
space="preserve" listing-type="equation">R=(C&
M)||(M&
Y)||(C&
Y); anda presence of at least one of the first color ink and the second color ink within said subset at a number of corresponding pixel locations exceeding a threshold value; and printing on the print medium in said image area at an interlace level which is dependent upon said determining step; where; C=a presence of cyan ink within said subset of image data at corresponding said pixel locations; M=a presence of magenta ink within said subset of image data at corresponding said pixel locations; Y=a presence of yellow ink within said subset of image data at corresponding said pixel locations; K=a presence of black ink within said subset of image data at corresponding said pixel locations; and R=a metric variable. - View Dependent Claims (21, 22, 23, 24)
-
Specification