Inkjet print calibration using test patches and densitometer

An inkjet printing and imprinting technology, applied in printing devices, printing, electrical components, etc., can solve problems affecting the quality and consistency of printed images

Inactive Publication Date: 2013-05-08
CARESTREAM HEALTH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These factors can constantly vary and adversely affect the quality and consistency of printed images

Method used

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  • Inkjet print calibration using test patches and densitometer
  • Inkjet print calibration using test patches and densitometer
  • Inkjet print calibration using test patches and densitometer

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Experimental program
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Embodiment Construction

[0026] The following is a detailed description of preferred embodiments of the present invention with reference to the accompanying drawings, in which like numerals refer to like structural elements in each of the drawings.

[0027]figure 1 To generally illustrate a block diagram and schematic diagram of an example of an inkjet printing system 30 configured to print a test blot and use a densitometer to measure the The density of the print compensates for factors that would otherwise impair image quality in a manner that modulates the ejection of ink droplets from the printhead.

[0028] according to figure 1 According to an embodiment of the present invention, the inkjet printing system 30 includes: an inkjet printer 40 having a printhead 42 ; a media source 50 providing a plurality of sheets of imaging media 52 ; a densitometer 60 and an image processing module 70 . According to one embodiment, the media source 50 includes a cassette that provides the plurality of transpare...

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Abstract

An inkjet printing system including a media source supplying sheets of transparent film. An image processing module receives and converts input image data to output image data comprising a plurality of output pixels configured to select an ink profile. Predetermined ink profiles are selected representative of a series of test patches each having an expected density. A printhead is configured to eject droplets of available colors of ink onto a sheet of transparent film based on the selected ink profiles to produce the output pixels and an output image thereon, including the series of test patches. A transmissive densitometer measures the actual density value of each of the test patches, wherein the image processing module adjusts the output pixel values based on a deviations between the expected and actual density values of the series of test patches.

Description

Field of Invention [0001] The present invention relates generally to the field of ink jet printing systems, and more particularly to ink jet printing systems for printing images on transparencies. More particularly, the present invention relates to an inkjet printing system that uses a test print to dynamically calibrate a halftone print pattern used by an inkjet printhead on transparencies Print the image. Background of the Invention [0002] An inkjet printing system produces a digital image by ejecting or propelling ink droplets of one or more colors from a number of nozzles on a printhead onto a recording medium based on digital image data, which includes a plurality of pixels, so that the The plurality of pixels represent the desired digital image to be printed. Inks typically contain colorants, such as pigments or dyes, in a carrier liquid, such as a solvent or glycol-water mixture. The recording medium includes various media such as paper and film. [0003] Films ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41J29/393B41J29/38B41J2/01
CPCB41J2/2128B41J29/393H04N1/4078H04N1/407
Inventor M.E.卡什恩斯基
Owner CARESTREAM HEALTH INC
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