US20160167415A1
Active / In Force
US
⏱️ 9.1 years remaining
Image processing apparatus, image processing method, and storage medium
Assignee: Canon Inc
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Filing: 2015-12-16
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Granted: —
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Expires: 2035-12-16
Abstract
Abstract An image processing apparatus has a first quantization configured to quantize multi-valued data corresponding to the first ink to generate the first quantized data, the multi-valued data indicating intermediate density; and a second quantization unit configured to quantize multi-valued data corresponding to the second ink to generate the second quantized data, the multi-valued data indicating intermediate density. In a case where a satellite of the first ink is more conspicuous than a satellite of the second ink on the print medium, a first dot pattern printed on the print medium based on the first quantized data has higher dispersibility than a second dot pattern printed on the print medium based on the second quantized data.
Inventors
- 👤 Tohru Ikeda
- 👤 Yumi Yanai
- 👤 Masao Kato
- 👤 Manabu Yamazoe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 10:41
CPC Classifications
B; B41; B41J; B41J29/00; B41J29/38; B41J2/00; B41J2/005; B41J2/01; B41J2/21; B41J2/2132; G; G06; G06K; G06K15/00; G06K15/02; G06K15/10; G06K15/102
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
152 words
1 . An image processing apparatus for printing an image on a print medium by using a printing unit that ejects a first ink based on first quantized data and ejects a second ink based on second quantized data, the image processing apparatus comprising: a first quantization configured to quantize multi-valued data corresponding to the first ink to generate the first quantized data, the multi-valued data indicating intermediate density; and a second quantization unit configured to quantize multi-valued data corresponding to the second ink to generate the second quantized data, the multi-valued data indicating intermediate density, wherein: a satellite of the first ink is more conspicuous than a satellite of the second ink on the print medium, and a first dot pattern printed on the print medium based on the first quantized data has higher dispersibility than a second dot pattern printed on the print medium based on the second quantized data.
Claim 2
Dependent Claim
152 words
1 . An image processing apparatus for printing an image on a print medium by using a printing unit that ejects a first ink based on first quantized data and ejects a second ink based on second quantized data, the image processing apparatus comprising: a first quantization configured to quantize multi-valued data corresponding to the first ink to generate the first quantized data, the multi-valued data indicating intermediate density; and a second quantization unit configured to quantize multi-valued data corresponding to the second ink to generate the second quantized data, the multi-valued data indicating intermediate density, wherein: a satellite of the first ink is more conspicuous than a satellite of the second ink on the print medium, and a first dot pattern printed on the print medium based on the first quantized data has higher dispersibility than a second dot pattern printed on the print medium based on the second quantized data.
Claim 3
Dependent Claim
71 words
2 . The image processing apparatus according to claim 1 , wherein the first quantization unit and the second quantization unit generate the first quantized data indicating printing of dot or non-printing of dot and the second quantized data indicating printing of dot or non-printing of dot by comparing the multi-valued data corresponding to the first ink and the multi-valued data corresponding to the second ink with corresponding threshold values, respectively.
Claim 4
Dependent Claim
101 words
3 . The image processing apparatus according to claim 2 , wherein: the first quantization unit and the second quantization unit refer to a same threshold value matrix in which multiple threshold values are arrayed; the first quantization unit performs a quantization process by comparing the multi-valued data corresponding to the first ink with a threshold value stored in the threshold value matrix; and the second quantization unit performs the quantization process by comparing the multi-valued data corresponding to the second ink with a threshold value resulting from applying an offset to the threshold value compared by the first quantization unit.
Claim 5
Dependent Claim
65 words
4 . The image processing apparatus according to claim 2 , wherein the first quantization unit and the second quantization unit refer to mutually different threshold value matrices each other in which multiple threshold values are arrayed, and perform the quantization process of the multi-valued data corresponding to the first ink and the quantization process of the multi-valued data corresponding to the second ink, respectively.
Claim 6
Dependent Claim
21 words
5 . The image processing apparatus according to claim 3 , wherein the threshold value matrix has a blue noise characteristics.
Claim 7
Dependent Claim
21 words
6 . The image processing apparatus according to claim 4 , wherein the threshold value matrices have blue noise characteristics, respectively.
Claim 8
Dependent Claim
40 words
7 . The image processing apparatus according to claim 3 , wherein the threshold value matrix is formed so as to keep low frequency power lower than high frequency power in the first dot pattern and the second dot pattern.
Claim 9
Dependent Claim
40 words
8 . The image processing apparatus according to claim 4 , wherein the threshold value matrices are formed so as to keep low frequency power lower than high frequency power in the first dot pattern and the second dot pattern.
Claim 10
Dependent Claim
80 words
9 . The image processing apparatus according to claim 1 , wherein: the printing unit ejects the first ink and the second ink respectively based on the first quantized data and the second quantized data with use of ejection port arrays each in which multiple ejection ports adapted to eject ink are arrayed; and in the first dot pattern, dispersibility in a direction of the arraying is higher than dispersibility in a direction intersecting with the direction of the arraying.
Claim 11
Dependent Claim
80 words
10 . The image processing apparatus according to claim 1 , wherein: the printing unit ejects the first ink and the second ink respectively based on the first quantized data and the second quantized data with use of ejection port arrays each in which multiple ejection ports adapted to eject ink are arrayed; and in the first dot pattern, dispersibility in a direction intersecting with a direction of the arraying is higher than dispersibility in the direction of the arraying.
Claim 12
Dependent Claim
23 words
11 . The image processing apparatus according to claim 1 , wherein the first ink is lower in viscosity than the second ink.
Claim 13
Dependent Claim
23 words
12 . The image processing apparatus according to claim 1 , wherein the first ink is lower in lightness than the second ink.
Claim 14
Dependent Claim
58 words
13 . The image processing apparatus according to claim 1 , further comprising a unit configured to convert the first quantized data into the first dot pattern and convert the second quantized data into the second dot pattern with use of a dot arrangement pattern in which dot arrangement is predetermined in an area corresponding to a pixel.
Claim 15
Dependent Claim
45 words
14 . The image processing apparatus according to claim 1 , further comprising the printing unit configured to eject the first ink based on the first quantized data and eject the second ink based on the second quantized data to print on the print medium.
Claim 16
Dependent Claim
146 words
15 . An image processing method for printing an image on a print medium by ejecting a first ink based on first quantized data and ejecting a second ink based on second quantized data, the image processing method comprising: a first quantization step of quantizing multi-valued data corresponding to the first ink to generate the first quantized data, the multi-valued data indicating intermediate density; and a second quantization step of quantizing multi-valued data corresponding to the second ink to generate the second quantized data, the multi-valued data indicating intermediate density, wherein: a satellite of the first ink is more conspicuous than a satellite of the second ink on the print medium, and a first dot pattern printed on the print medium based on the first quantized data has higher dispersibility than a second dot pattern printed on the print medium based on the second quantized data.
Claim 17
Dependent Claim
146 words
15 . An image processing method for printing an image on a print medium by ejecting a first ink based on first quantized data and ejecting a second ink based on second quantized data, the image processing method comprising: a first quantization step of quantizing multi-valued data corresponding to the first ink to generate the first quantized data, the multi-valued data indicating intermediate density; and a second quantization step of quantizing multi-valued data corresponding to the second ink to generate the second quantized data, the multi-valued data indicating intermediate density, wherein: a satellite of the first ink is more conspicuous than a satellite of the second ink on the print medium, and a first dot pattern printed on the print medium based on the first quantized data has higher dispersibility than a second dot pattern printed on the print medium based on the second quantized data.
Claim 18
Dependent Claim
171 words
16 . A storage medium adapted to store a program for instructing a computer to function as respective units of an image processing apparatus for printing an image on a print medium by using a printing unit that ejects a first ink based on first quantized data and ejects a second ink based on second quantized data, the image processing apparatus comprising: a first quantization unit configured to quantize multi-valued data corresponding to the first ink to generate the first quantized data, the multi-valued data indicating intermediate density; and a second quantization unit configured to quantize multi-valued data corresponding to the second ink to generate the second quantized data, the multi-valued data indicating intermediate density, wherein: a satellite of the first ink is more conspicuous than a satellite of the second ink on the print medium, and a first dot pattern printed on the print medium based on the first quantized data has higher dispersibility than a second dot pattern printed on the print medium based on the second quantized data.
Claim 19
Dependent Claim
171 words
16 . A storage medium adapted to store a program for instructing a computer to function as respective units of an image processing apparatus for printing an image on a print medium by using a printing unit that ejects a first ink based on first quantized data and ejects a second ink based on second quantized data, the image processing apparatus comprising: a first quantization unit configured to quantize multi-valued data corresponding to the first ink to generate the first quantized data, the multi-valued data indicating intermediate density; and a second quantization unit configured to quantize multi-valued data corresponding to the second ink to generate the second quantized data, the multi-valued data indicating intermediate density, wherein: a satellite of the first ink is more conspicuous than a satellite of the second ink on the print medium, and a first dot pattern printed on the print medium based on the first quantized data has higher dispersibility than a second dot pattern printed on the print medium based on the second quantized data.
References Cited (Backward Citations)
US20150178599A1
Cited
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