| US 7,522,864 B2 | ||
| Image forming apparatus and image forming method | ||
| Kazuomi Sakatani, Toyokawa (Japan); Soh Hirota, Hoi-gun (Japan); Masahiro Kouzaki, Toyohashi (Japan); Mitsuru Obara, Toyohashi (Japan); and Masaki Tanaka, Toyohashi (Japan) | ||
| Assigned to Konica Minolta Business Technologies, Inc., Chiyoda-Ku, Tokyo (Japan) | ||
| Filed on Nov. 16, 2006, as Appl. No. 11/600,087. | ||
| Claims priority of application No. 2005-346864 (JP), filed on Nov. 30, 2005; and application No. 2005-346865 (JP), filed on Nov. 30, 2005. | ||
| Prior Publication US 2007/0122198 A1, May 31, 2007 | ||
| Int. Cl. G03G 15/01 (2006.01) | ||
| U.S. Cl. 399—223 | 6 Claims |
| 1. An image forming apparatus comprising:
a magenta developing unit operable to develop, using a toner of a magenta-type color, an electrostatic latent image corresponding
to the toner of the magenta-type color;
a cyan developing unit operable to develop, using a toner of a cyan-type color, an electrostatic latent image corresponding
to the toner of the cyan-type color;
a black developing unit operable to develop, using a toner of a black-type color, an electrostatic latent image corresponding
to the toner of the black-type color; and
an image processing unit operable to execute a pseudo full-color image forming process through which only three toner images
of the magenta-type, cyan-type, and black-type colors developed by respective developing units are layered so as to form a
color image,
wherein the toner of the magenta-type color is for use in the pseudo full-color image forming and has a chromaticity point
shifted in a direction closer to a yellow hue when plotted on a chromaticity diagram, in comparison with the toner of a genuine
magenta color for use in full-color image forming including a case of using four colors that are the magenta-type, cyan-type,
and black-type colors, and a yellow-type color.
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