Claims
- 1. A color image recording apparatus including a plurality of recording heads for effecting recording with different colors, said recording heads each having a plurality of nozzles, said color image recording apparatus effecting color recording on the basis of image data corresponding to respective colors, said apparatus comprising:
- test pattern recording means for effecting recording, by said plurality of heads on a recording material, of a plurality of test patterns comprising a monochromatic test pattern and a test pattern provided by a color mixture by at least two of said recording heads;
- detecting means for detecting a density non-uniformity in the recorded plurality of text patterns;
- calculating means for calculating correction data for respective ones of the nozzles on the basis of detecting of the plurality of test patterns; and
- correction means for correcting the image data on the basis of the correction data provided by said calculating means.
- 2. An apparatus according to claim 1, wherein said recording elements are ink jet recording elements.
- 3. An apparatus according to claim 2, wherein said ink jet recording elements use thermal energy to produce a bubble to eject a recording ink.
- 4. An apparatus according to claim 1, wherein said detecting means further comprises a photoelectric transducer element for converting an optical density of the color image to an electric signal.
- 5. An apparatus according to claim 1, wherein said calculating means calculates the correction data so as to suppress density non-uniformity of the plurality of test patterns.
- 6. An apparatus according to claim 1, wherein the test pattern provided by the color mixture is made of at least two color materials of cyan, yellow and magenta.
- 7. An apparatus according to claim 1, wherein said calculating means calculates the correction data for each nozzle of the plurality of recording head on the basis of chromaticity at a position corresponding to each of the nozzles in the plurality of test patterns.
- 8. An apparatus according to claim 1, further comprising means for binarizing the image data corrected by the correction means.
Priority Claims (1)
Number |
Date |
Country |
Kind |
1-254329 |
Sep 1989 |
JPX |
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Parent Case Info
This application is a continuation of application Ser. No. 08/034,172 filed Mar. 18, 1993, now abandoned and which is a continuation of application Ser. No. 07/587,786 filed Sep. 25, 1990, now abandoned.
US Referenced Citations (20)
Foreign Referenced Citations (6)
Number |
Date |
Country |
0011722 |
Jun 1980 |
EPX |
0317268 |
May 1989 |
EPX |
57-41967 |
Mar 1982 |
JPX |
159661 |
Oct 1982 |
JPX |
63-303370 |
Apr 1989 |
JPX |
1-110154 |
Jul 1989 |
JPX |
Continuations (2)
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Number |
Date |
Country |
Parent |
034172 |
Mar 1993 |
|
Parent |
587786 |
Sep 1990 |
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