Method of printing an object having a surface of varying height
First Claim
1. A method of printing an object on a support, said object having a surface of varying height, by a printer configured to print a number of pass images on top of each other in a number of passes, the method comprising the steps of:
- defining an object image comprising height data for indicating a height of each pixel of the object image;
deriving from the object image a number of pass images to be printed on top of each other, comprising;
establishing pass pixels of the pass images for which pass pixels a pass pixel height is defined, wherein a sum of the defined heights of a sequence of pass pixels that corresponds to a respective pixel of the object image equals the height of that pixel of the object image; and
printing the pass images on top of each other, comprising;
varying an amount of printed material that is printed per printed pass pixel of a pass image in accordance with the defined pass pixel heights of the pass pixels,wherein said establishing of pass pixels comprises;
selecting, based on random data, pass pixel heights for pass pixels to be established from a respective set of at least two positive pass pixel heights, andwherein at least one set of respective pass pixel heights is used for said selecting, which set comprises a first pass pixel height and a second pass pixel height, which is at least 1.5 times the first pass pixel height.
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Accused Products
Abstract
A printing system and method of printing an object having a surface of varying height, by a printer configured to print a number of pass images on top of each other in a number of passes, including: deriving from an object image a number of pass images to be printed on top of each other, including: establishing pass pixels of the pass images for which pass pixels a pass pixel height is defined, where a sum of the defined heights of a sequence of pass pixels that corresponds to a respective pixel of the object image equals the height of that pixel of the object image; and printing the pass images on top of each other. An amount of printed material that is printed per printed pass pixel is varied in accordance with the defined pass pixel heights. The pass pixels heights are selected, based on random data, from a respective set of at least two positive pass pixel heights.
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Citations
11 Claims
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1. A method of printing an object on a support, said object having a surface of varying height, by a printer configured to print a number of pass images on top of each other in a number of passes, the method comprising the steps of:
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defining an object image comprising height data for indicating a height of each pixel of the object image; deriving from the object image a number of pass images to be printed on top of each other, comprising;
establishing pass pixels of the pass images for which pass pixels a pass pixel height is defined, wherein a sum of the defined heights of a sequence of pass pixels that corresponds to a respective pixel of the object image equals the height of that pixel of the object image; andprinting the pass images on top of each other, comprising;
varying an amount of printed material that is printed per printed pass pixel of a pass image in accordance with the defined pass pixel heights of the pass pixels,wherein said establishing of pass pixels comprises;
selecting, based on random data, pass pixel heights for pass pixels to be established from a respective set of at least two positive pass pixel heights, andwherein at least one set of respective pass pixel heights is used for said selecting, which set comprises a first pass pixel height and a second pass pixel height, which is at least 1.5 times the first pass pixel height. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A print system for printing an object on a support, said object having a surface of varying height, a printer configured to print a number of pass images on top of each other in a number of passes, the printer comprising:
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a print controller; and a print engine, wherein the print controller is to; receive an object image comprising height data for indicating a height of each pixel of the object image; derive from the object image a number of pass images to be printed on top of each other, comprising;
establishing pass pixels of the pass images for which pass pixels a pass pixel height is defined, wherein a sum of the defined heights of a sequence of pass pixels that corresponds to a respective pixel of the object image equals the height of that pixel of the object image; andtransfer said pass images to the print engine, which is to print the pass images on top of each other in a predetermined order, comprising;
varying an amount of printed material that is printed per printed pass pixel of a pass image in accordance with the defined pass pixel heights of the pass pixels, andwherein said establishing of pass pixels comprises;
selecting, based on random data, pass pixel heights for pass pixels to be established from a respective set of at least two positive pass pixel heights, andwherein at least one set of respective pass pixel heights is used for said selecting, which set comprises a first pass pixel height and a second pass pixel height, which is at least 1.5 times the first pass pixel height. - View Dependent Claims (11)
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Specification