Image processing apparatus performing color conversion
AssigneeSharp Kabushiki Kaisha
InventorsMichiko Fujiwara, Kyosuke Taka
Life of this patent
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Abstract
An image processing apparatus handling combined data including read data from a scanner and written data written by a touch pen, capable of performing appropriate color conversion both on the read data and written data is provided. When a display image obtained by combining the read data and the written data is to be printed, the image processing apparatus executes first image processing on the read data, and second image processing on the written data, respectively. By an image forming apparatus, the combined data including the read data and the written data, which have been appropriately color-converted by respective image processing, is printed.
Claims20
An image processing apparatus for performing an image processing of converting a value of an RGB color system used for display to a value of a CMYK color system used for printing, comprising:
- a storage unit storing color image data including color image data of a first type and color image data of a second type as written data;
- a first image processing circuit executing a first color conversion process on said color image data of the first type, using a first color conversion profile optimized for the color image data of the first type, in response to a predetermined instruction of image processing;
- and
- a second image processing circuit executing, in response to said instruction, a second color conversion process different from said first color conversion process, using a second color conversion profile optimized for said written data, and executing a process for converting a thickness of each said written data, using a thickness conversion table prepared in advance in accord with a user's request, on said color image data of the second type;
- wherein,
- said second color conversion profile is a prescribed color conversion table including a column indicating a color number for identifying a color, a column indicating an RGB value of each color when displayed, and a column indicating a CMYK value of each color when printed;
- and
- said thickness conversion table includes a column indicating a thickness of each written data when displayed, and a column indicating a print dot number corresponding to the thickness of each written data when printed.
An image processing method for performing an image processing of converting a value of an RGB color system used for display to a value of a CMYK color system used for printing, comprising the steps of:
- storing in a storage device color image data including color image data of a first type and color image data of a second type as written data;
- executing, in response to a predetermined instruction of image processing, a first color conversion process on said color image data of the first type, using a first color conversion profile optimized for the color data of said first type, by a first image processing circuit;
- and
- executing, in response to said instruction, a second color conversion process, different from said first color conversion process, using a second color conversion profile optimized for said written data, and executing a process for converting a thickness of each said written data, using a thickness conversion table prepared in advance in accordance with a user's request, on said color image data of the second type by a second image processing circuit;
- wherein
- said second color conversion profile is a prescribed color conversion table including a column indicating a color number for identifying a color, a column indicating an RGB value of each color when displayed, and a column indicating a CMYK value of each color when printed;
- and
- said thickness conversion table includes a column indicating a thickness of each written data when displayed, and a column indicating a print dot number corresponding to the thickness of each written data when printed.
A nontransistory computer-readable medium storing a program that when executed by a computer causes said computer to operate as an image processing apparatus for performing an image processing of converting a value of an RGB color system used for display to a value of a CMYK color system used for printing, including:
- a storage unit storing color image data including color image data of a first type and color image data of a second type as written data;
- a first image processing circuit executing a first color conversion process on said color image data of the first type, using a first color conversion profile optimized for the color data of the first type, in response to a predetermined instruction of image processing;
- and
- a second image processing circuit executing, in response to said instruction, a second color conversion process different from said first color conversion process, using a second color conversion profile optimized for written data, and executing a process for converting a thickness of each said written data, using a thickness conversion table prepared in advance in accordance with a user's request, on said color image data of the second type;
- wherein
- said second color conversion profile is a prescribed color conversion table including a column indicating a color number for identifying each color, a column indicating an RGB value of each color when displayed, and a column indicating a CMYK value of each color when printed;
- and
- said thickness conversion table includes a column indicating a thickness of each written data when displayed, and a column indicating a print dot number corresponding to the thickness of each written data when printed.
Dependencies are inferred from the claim text.