Patents by Inventor Mayuko Yamagata
Mayuko Yamagata has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11948026Abstract: Formed is a dither pattern that makes it possible to output an image with excellent dot dispersibility and reduced graininess regardless of controls after quantization processing. To this end, an extended pattern in which multiple divided pixels correspond to each of multiple pixels included in quantization data and one or more of the multiple divided pixels are determined as dot-arrangeable-pixels in which dots can be printed is generated. Thereafter, the thresholds of the dither pattern are set based on the extended pattern in which the dots are arranged to obtain predetermined dispersibility.Type: GrantFiled: April 26, 2022Date of Patent: April 2, 2024Assignee: CANON KABUSHIKI KAISHAInventors: Junichi Nakagawa, Hirokazu Tanaka, Tsukasa Doi, Mayuko Yamagata, Satoshi Seki
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Publication number: 20240086662Abstract: An object is to print a high quality image with resistance to print misalignment. To this end, the image processing apparatus generates quantized data for printing a first dot pattern and a second dot pattern in an overlapping manner. The first dot pattern and the second dot pattern are lattice patterns varying in a combination of two basis vectors. In a combined dot pattern obtained by combining the first and second dot patterns, there is a neighboring dot in which a dot in the first dot pattern and a dot in the second dot pattern are arranged at an interval smaller than a lattice spacing. The neighboring dot includes multiple neighboring dots varying in an approach direction.Type: ApplicationFiled: November 16, 2023Publication date: March 14, 2024Inventors: Tsukasa Doi, Hirokazu Tanaka, Satoshi Seki, Junichi Nakagawa, Mayuko Yamagata
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Patent number: 11893288Abstract: A first dot pattern printed according to a result of quantization performed on a multi-valued grayscale value by using a first threshold matrix and a second dot pattern printed according to a result of quantization performed on multi-valued grayscale value by using a second threshold matrix are printed on a print medium in an overlapping manner. In order to generate the threshold matrices, a first initial pattern being a dot pattern corresponding to a first grayscale value and a second initial pattern being a dot pattern corresponding to a second grayscale value lower than the first grayscale value are generated for pixel regions of the first and second threshold matrices. Then, thresholds of the first and second threshold matrices are set such that dot patterns having continuity with the first and second initial patterns are obtained at grayscale values between the first and second grayscale values.Type: GrantFiled: December 28, 2022Date of Patent: February 6, 2024Assignee: CANON KABUSHIKI KAISHAInventors: Junichi Nakagawa, Hirokazu Tanaka, Tsukasa Doi, Mayuko Yamagata, Satoshi Seki
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Patent number: 11842234Abstract: An object is to print a high quality image with resistance to print misalignment. To this end, the image processing apparatus generates quantized data for printing a first dot pattern and a second dot pattern in an overlapping manner. The first dot pattern and the second dot pattern are lattice patterns varying in a combination of two basis vectors. In a combined dot pattern obtained by combining the first and second dot patterns, there is a neighboring dot in which a dot in the first dot pattern and a dot in the second dot pattern are arranged at an interval smaller than a lattice spacing. The neighboring dot includes multiple neighboring dots varying in an approach direction.Type: GrantFiled: March 10, 2023Date of Patent: December 12, 2023Assignee: CANON KABUSHIKI KAISHAInventors: Tsukasa Doi, Hirokazu Tanaka, Satoshi Seki, Junichi Nakagawa, Mayuko Yamagata
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Publication number: 20230214618Abstract: An object is to print a high quality image with resistance to print misalignment. To this end, the image processing apparatus generates quantized data for printing a first dot pattern and a second dot pattern in an overlapping manner. The first dot pattern and the second dot pattern are lattice patterns varying in a combination of two basis vectors. In a combined dot pattern obtained by combining the first and second dot patterns, there is a neighboring dot in which a dot in the first dot pattern and a dot in the second dot pattern are arranged at an interval smaller than a lattice spacing. The neighboring dot includes multiple neighboring dots varying in an approach direction.Type: ApplicationFiled: March 10, 2023Publication date: July 6, 2023Inventors: Tsukasa Doi, Hirokazu Tanaka, Satoshi Seki, Junichi Nakagawa, Mayuko Yamagata
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Publication number: 20230144014Abstract: A first dot pattern printed according to a result of quantization performed on a multi-valued grayscale value by using a first threshold matrix and a second dot pattern printed according to a result of quantization performed on multi-valued grayscale value by using a second threshold matrix are printed on a print medium in an overlapping manner. In order to generate the threshold matrices, a first initial pattern being a dot pattern corresponding to a first grayscale value and a second initial pattern being a dot pattern corresponding to a second grayscale value lower than the first grayscale value are generated for pixel regions of the first and second threshold matrices. Then, thresholds of the first and second threshold matrices are set such that dot patterns having continuity with the first and second initial patterns are obtained at grayscale values between the first and second grayscale values.Type: ApplicationFiled: December 28, 2022Publication date: May 11, 2023Inventors: Junichi Nakagawa, Hirokazu Tanaka, Tsukasa Doi, Mayuko Yamagata, Satoshi Seki
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Patent number: 11625563Abstract: An object is to print a high quality image with resistance to print misalignment. To this end, the image processing apparatus generates quantized data for printing a first dot pattern and a second dot pattern in an overlapping manner. The first dot pattern and the second dot pattern are lattice patterns varying in a combination of two basis vectors. In a combined dot pattern obtained by combining the first and second dot patterns, there is a neighboring dot in which a dot in the first dot pattern and a dot in the second dot pattern are arranged at an interval smaller than a lattice spacing. The neighboring dot includes multiple neighboring dots varying in an approach direction.Type: GrantFiled: July 21, 2021Date of Patent: April 11, 2023Assignee: CANON KABUSHIKI KAISHAInventors: Tsukasa Doi, Hirokazu Tanaka, Satoshi Seki, Junichi Nakagawa, Mayuko Yamagata
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Patent number: 11573750Abstract: A first dot pattern printed according to a result of quantization performed on a multi-valued grayscale value by using a first threshold matrix and a second dot pattern printed according to a result of quantization performed on multi-valued grayscale value by using a second threshold matrix are printed on a print medium in an overlapping manner. In order to generate the threshold matrices, a first initial pattern being a dot pattern corresponding to a first grayscale value and a second initial pattern being a dot pattern corresponding to a second grayscale value lower than the first grayscale value are generated for pixel regions of the first and second threshold matrices. Then, thresholds of the first and second threshold matrices are set such that dot patterns having continuity with the first and second initial patterns are obtained at grayscale values between the first and second grayscale values.Type: GrantFiled: July 21, 2021Date of Patent: February 7, 2023Assignee: CANON KABUSHIKI KAISHAInventors: Junichi Nakagawa, Hirokazu Tanaka, Tsukasa Doi, Mayuko Yamagata, Satoshi Seki
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Patent number: 11565527Abstract: In a printing apparatus configured to print an image by bidirectional multipass printing while using multiple print element rows that apply color material of the same color, a high-quality image suppressed in hue unevenness and density unevenness is printed. To this end, the printing apparatus forms first and second dot patterns on a print medium in an overlapping manner. In the first dot pattern, dot arrays in which first dot groups are arranged at an interval B1 are arranged in a nozzle arrangement direction while being shifted from each other by C1 in a scanning direction of a print head. In the second dot pattern, dot arrays in which the first dot groups are arranged at the interval B1 are arranged in a nozzle arrangement direction while being shifted from each other by C2 in the scanning direction of the print head. Here, values of C1 and C2 are different.Type: GrantFiled: July 21, 2021Date of Patent: January 31, 2023Assignee: CANON KABUSHIKI KAISHAInventors: Hirokazu Tanaka, Tsukasa Doi, Junichi Nakagawa, Mayuko Yamagata, Satoshi Seki
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Publication number: 20220253656Abstract: Formed is a dither pattern that makes it possible to output an image with excellent dot dispersibility and reduced graininess regardless of controls after quantization processing. To this end, an extended pattern in which multiple divided pixels correspond to each of multiple pixels included in quantization data and one or more of the multiple divided pixels are determined as dot-arrangeable-pixels in which dots can be printed is generated. Thereafter, the thresholds of the dither pattern are set based on the extended pattern in which the dots are arranged to obtain predetermined dispersibility.Type: ApplicationFiled: April 26, 2022Publication date: August 11, 2022Inventors: Junichi Nakagawa, Hirokazu Tanaka, Tsukasa Doi, Mayuko Yamagata, Satoshi Seki
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Patent number: 11334778Abstract: Formed is a dither pattern that makes it possible to output an image with excellent dot dispersibility and reduced graininess regardless of controls after quantization processing. To this end, an extended pattern in which multiple divided pixels correspond to each of multiple pixels included in quantization data and one or more of the multiple divided pixels are determined as dot-arrangeable-pixels in which dots can be printed is generated. Thereafter, the thresholds of the dither pattern are set based on the extended pattern in which the dots are arranged to obtain predetermined dispersibility.Type: GrantFiled: July 6, 2020Date of Patent: May 17, 2022Assignee: CANON KABUSHIKI KAISHAInventors: Junichi Nakagawa, Hirokazu Tanaka, Tsukasa Doi, Mayuko Yamagata, Satoshi Seki
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Publication number: 20220032610Abstract: An object is to print a high quality image with resistance to print misalignment. To this end, the image processing apparatus generates quantized data for printing a first dot pattern and a second dot pattern in an overlapping manner. The first dot pattern and the second dot pattern are lattice patterns varying in a combination of two basis vectors. In a combined dot pattern obtained by combining the first and second dot patterns, there is a neighboring dot in which a dot in the first dot pattern and a dot in the second dot pattern are arranged at an interval smaller than a lattice spacing. The neighboring dot includes multiple neighboring dots varying in an approach direction.Type: ApplicationFiled: July 21, 2021Publication date: February 3, 2022Inventors: Tsukasa Doi, Hirokazu Tanaka, Satoshi Seki, Junichi Nakagawa, Mayuko Yamagata
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Publication number: 20220032646Abstract: In a printing apparatus configured to print an image by bidirectional multipass printing while using multiple print element rows that apply color material of the same color, a high-quality image suppressed in hue unevenness and density unevenness is printed. To this end, the printing apparatus forms first and second dot patterns on a print medium in an overlapping manner. In the first dot pattern, dot arrays in which first dot groups are arranged at an interval B1 are arranged in a nozzle arrangement direction while being shifted from each other by C1 in a scanning direction of a print head. In the second dot pattern, dot arrays in which the first dot groups are arranged at the interval B1 are arranged in a nozzle arrangement direction while being shifted from each other by C2 in the scanning direction of the print head. Here, values of C1 and C2 are different.Type: ApplicationFiled: July 21, 2021Publication date: February 3, 2022Inventors: Hirokazu Tanaka, Tsukasa Doi, Junichi Nakagawa, Mayuko Yamagata, Satoshi Seki
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Publication number: 20220035577Abstract: A first dot pattern printed according to a result of quantization performed on a multi-valued grayscale value by using a first threshold matrix and a second dot pattern printed according to a result of quantization performed on multi-valued grayscale value by using a second threshold matrix are printed on a print medium in an overlapping manner. In order to generate the threshold matrices, a first initial pattern being a dot pattern corresponding to a first grayscale value and a second initial pattern being a dot pattern corresponding to a second grayscale value lower than the first grayscale value are generated for pixel regions of the first and second threshold matrices. Then, thresholds of the first and second threshold matrices are set such that dot patterns having continuity with the first and second initial patterns are obtained at grayscale values between the first and second grayscale values.Type: ApplicationFiled: July 21, 2021Publication date: February 3, 2022Inventors: Junichi Nakagawa, Hirokazu Tanaka, Tsukasa Doi, Mayuko Yamagata, Satoshi Seki
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Publication number: 20210019582Abstract: Formed is a dither pattern that makes it possible to output an image with excellent dot dispersibility and reduced graininess regardless of controls after quantization processing. To this end, an extended pattern in which multiple divided pixels correspond to each of multiple pixels included in quantization data and one or more of the multiple divided pixels are determined as dot-arrangeable-pixels in which dots can be printed is generated. Thereafter, the thresholds of the dither pattern are set based on the extended pattern in which the dots are arranged to obtain predetermined dispersibility.Type: ApplicationFiled: July 6, 2020Publication date: January 21, 2021Inventors: Junichi Nakagawa, Hirokazu Tanaka, Tsukasa Doi, Mayuko Yamagata, Satoshi Seki
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Patent number: 10484576Abstract: Recording data for recording an achromatic color image having a high lightness is generated as follows. A first color material and a second color material which has a hue complementary to that of the first color material are used to record the image. Recording data is generated such that a recording amount of the first color material and a recording amount of the second color material are larger than a recording amount of another color material, and such that a pixel where it is determined that the first color material is to be recorded and a pixel where it is determined that the second color material is to be recorded are at positions different from each other.Type: GrantFiled: August 3, 2018Date of Patent: November 19, 2019Assignee: CANON KABUSHIKI KAISHAInventors: Fumiko Suzuki, Mayuko Yamagata, Hirokazu Tanaka, Tsukasa Doi, Tomoyuki Tenkawa
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Patent number: 10225439Abstract: An image printing apparatus can print an image in which graininess is suppressed while using a color material of light blue. To achieve this, the color material of light blue satisfies the following condition. ?LB?(?LC??LB)>0 and ?LB?(?LM??LB)>0 Here, ?LC represents a difference in lightness between cyan ink and a blank area, ?LM represents a difference in lightness between magenta ink and the blank area, and ?LB represents a difference in lightness between light blue ink and the blank area. Further, the color material of light blue satisfies the following condition. hC+(h(C+M)?hC)/2?hB?hM?(hM?h(C+M))/2 Here, hC represents a hue of the cyan ink, hM represents a hue of the magenta ink, h(C+M) represents a hue of the image printed with the cyan ink and the magenta ink in the same amount, and hB represents a hue of the light blue ink.Type: GrantFiled: December 26, 2017Date of Patent: March 5, 2019Assignee: CANON KABUSHIKI KAISHAInventors: Fumiko Suzuki, Mayuko Yamagata, Satoshi Seki, Hirokazu Tanaka, Gou Sasaki, Tsukasa Doi, Kiichiro Takahashi
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Publication number: 20190052775Abstract: Recording data for recording an achromatic color image having a high lightness is generated as follows. A first color material and a second color material which has a hue complementary to that of the first color material are used to record the image. Recording data is generated such that a recording amount of the first color material and a recording amount of the second color material are larger than a recording amount of another color material, and such that a pixel where it is determined that the first color material is to be recorded and a pixel where it is determined that the second color material is to be recorded are at positions different from each other.Type: ApplicationFiled: August 3, 2018Publication date: February 14, 2019Inventors: Fumiko Suzuki, Mayuko Yamagata, Hirokazu Tanaka, Tsukasa Doi, Tomoyuki Tenkawa
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Patent number: 9962950Abstract: Driving orders of driving blocks are controlled with regard to each of multiple types of ink so that landing positions of ink from the driving blocks differ in multiple scans, and in the mask patterns used, there is a relatively small number of superimposed pixels among pixels regarding which a large number of discharge permitted has been stipulated regarding a mask pattern corresponding to one type of ink and one scan and pixels regarding which a large number of discharge permitted has been stipulated regarding a mask pattern corresponding to another type of ink and the one scan.Type: GrantFiled: October 25, 2016Date of Patent: May 8, 2018Assignee: Canon Kabushiki KaishaInventors: Mayuko Yamagata, Satoshi Seki, Hirokazu Tanaka, Gou Sasaki, Tsukasa Doi, Fumiko Suzuki, Kiichiro Takahashi
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Publication number: 20180124278Abstract: An image printing apparatus can print an image in which graininess is suppressed while using a color material of light blue. To achieve this, the color material of light blue satisfies the following condition. ?LB?(?LC??LB)>0 and ?LB?(?LM??LB)>0 Here, ?LC represents a difference in lightness between cyan ink and a blank area, ?LM represents a difference in lightness between magenta ink and the blank area, and ?LB represents a difference in lightness between light blue ink and the blank area. Further, the color material of light blue satisfies the following condition. hC+(h(C+M)?hC)/2?hB?hM?(hM?h(C+M))/2 Here, hC represents a hue of the cyan ink, hM represents a hue of the magenta ink, h(C+M) represents a hue of the image printed with the cyan ink and the magenta ink in the same amount, and hB represents a hue of the light blue ink.Type: ApplicationFiled: December 26, 2017Publication date: May 3, 2018Inventors: Fumiko Suzuki, Mayuko Yamagata, Satoshi Seki, Hirokazu Tanaka, Gou Sasaki, Tsukasa Doi, Kiichiro Takahashi