Patent ID: 8192013

Claim:
An inkjet recording apparatus, comprising: a black ink ejecting portion configured to eject a black ink containing a self-dispersion pigment; color ink ejecting portions configured to eject, respectively, as color inks, a cyan ink, a magenta ink and a yellow ink which each comprise a polymer emulsion which comprises a polymer fine particle containing a coloring material which is insoluble in water or slightly soluble in water; and a recording-controlling unit configured to control recording, wherein the black ink ejecting portion and the color ink ejecting portions scan relative to a recording medium, to thereby record an image on the recording medium, wherein, when the recording is carried out on the recording medium in the following cases: (i) the recording medium is optically transparent and is provided, on a transparent base material thereof, with an ink accepting layer, and (ii) the recording medium is provided, on an opaque base material thereof, with an ink accepting layer which has a surface having a gloss, the recording-controlling unit controls recording on the recording medium such that the color inks are used for recording a monochrome image and a color image which has a plurality of colors, leaving the black ink substantially free from being used, wherein, when a black color area in the color image is recorded in the following cases: (iii) the color image is recorded on a plain paper sheet, and (iv) the color image is recorded on the recording medium which is provided, on an opaque base material thereof, with an ink accepting layer which has a surface free from a gloss, the recording-controlling unit controls recording such that the black ink and the color inks are used in combination, and wherein, in the following cases: (v) recording the monochrome image on the plain paper sheet, and (vi) recording the monochrome image on the recording medium which is provided, on the opaque base material thereof, with the ink accepting layer which has the surface free from the gloss, the recording-controlling unit controls recording such that the black ink is used, leaving the color inks substantially free from being used.