Abstract: An inkjet ink contains at least a first carbon black, a second carbon black, and water. The first carbon black has a DBP oil absorption of less than 130 mL/100 g and a BET specific surface area of less than 300 m2/g. The second carbon black has a DBP oil absorption of at least 130 mL/100 g and a BET specific surface area of at least 300 m2/g.

Abstract: An inkjet recording apparatus has a recording head, a thermal head, and a heat control portion. The recording head has an ink discharge surface. The thermal head is arranged opposite the ink discharge surface across a recording medium conveyance passage, and heats the recording medium. The thermal head is provided with a plurality of element arrays in the width direction, the element arrays each having a plurality of heating elements arrayed in the recording medium conveyance direction. The heat control portion makes generate heat at least some heating elements in the element arrays corresponding to the ink discharge ports through which ink is discharged.

Abstract: An inkjet recording apparatus has a recording head, a thermal head, and a heat control portion. The recording head has an ink discharge surface. The thermal head is arranged opposite the ink discharge surface across a recording medium conveying passage and heats a recording medium. In the thermal head, a plurality of element arrays each formed of a plurality of heating elements arrayed in the recording medium conveying direction are provided in the width direction. The heat control portion makes at least part of the heating elements in the element arrays that correspond to the ink discharge ports that discharge ink generate heat.

Abstract: An inkjet recording apparatus has a recording head, a thermal head, and a heat control portion. The recording head has an ink discharge surface. The thermal head is arranged opposite the ink discharge surface across a recording medium conveyance passage, and heats the recording medium. The thermal head is provided with a plurality of element arrays in the width direction, the element arrays each having a plurality of heating elements arrayed in the recording medium conveyance direction. The heat control portion makes generate heat at least some heating elements in the element arrays corresponding to the ink discharge ports through which ink is discharged.

Abstract: An inkjet recording apparatus has a recording head, a thermal head, and a heat control portion. The recording head has an ink discharge surface. The thermal head is arranged opposite the ink discharge surface across a recording medium conveying passage and heats a recording medium. In the thermal head, a plurality of element arrays each formed of a plurality of heating elements arrayed in the recording medium conveying direction are provided in the width direction. The heat control portion makes at least part of the heating elements in the element arrays that correspond to the ink discharge ports that discharge ink generate heat.

Abstract: An area separation unit 22 determines a character in an input image on the basis of image data of the input image. The filter processing unit 23 performs a filter process for a character edge area of a character in an input image, and the color conversion unit 24 performs a color conversion process for a pixel in the character edge area in accordance with a color conversion characteristic that (a) is different from a color conversion characteristic for a pixel other than a pixel in the character edge area and (b) compensates a color error due to the filter process.

Abstract: An area separation unit 22 determines a character in an input image on the basis of image data of the input image. The filter processing unit 23 performs a filter process for a character edge area of a character in an input image, and the color conversion unit 24 performs a color conversion process for a pixel in the character edge area in accordance with a color conversion characteristic that (a) is different from a color conversion characteristic for a pixel other than a pixel in the character edge area and (b) compensates a color error due to the filter process.

Abstract: A reproduction color storing section stores pieces of color information in association with a color range that is stored in a color range storing section and includes a fluorescent color targeted for detention. Each piece of color information specifies a reproduction color candidate usable for reproducing the fluorescent color. The pixel extracting section extracts, from image data, a pixel having the fluorescent color based on the color range. A display control section reads, from the reproduction color storing section, the pieces of color information corresponding to the fluorescent color of the extracted pixel and displays the reproduction color candidates specified by the pieces of color information on a display section. The reproduction color receiving section receives a reproduction color selected by a user from the displayed reproduction color candidates.

Abstract: A reproduction color storing section stores pieces of color information in association with a color range that is stored in a color range storing section and includes a fluorescent color targeted for detention. Each piece of color information specifies a reproduction color candidate usable for reproducing the fluorescent color. The pixel extracting section extracts, from image data, a pixel having the fluorescent color based on the color range. A display control section reads, from the reproduction color storing section, the pieces of color information corresponding to the fluorescent color of the extracted pixel and displays the reproduction color candidates specified by the pieces of color information on a display section. The reproduction color receiving section receives a reproduction color selected by a user from the displayed reproduction color candidates.