| US 7,603,047 B2 | ||
| Image forming apparatus capable of forming high-quality image | ||
| Hironori Akashi, Okazaki (Japan); and Tetsuya Sakai, Aichi-ken (Japan) | ||
| Assigned to Konica Minolta Business Technologies, Inc., Tokyo (Japan) | ||
| Filed on Mar. 05, 2007, as Appl. No. 11/713,667. | ||
| Claims priority of application No. 2006-306823 (JP), filed on Nov. 13, 2006. | ||
| Prior Publication US 2008/0112718 A1, May 15, 2008 | ||
| Int. Cl. G03G 15/00 (2006.01) | ||
| U.S. Cl. 399—49 [399/302] | 12 Claims |
| 1. An image forming apparatus, comprising:
a detection unit detecting density of a toner pattern formed on an image carrier;
a determination unit determining a detection value containing noise attributed to abnormality of a shape on said image carrier,
out of results of detection by said detection unit;
a correction unit correcting said detection value containing noise by correcting, using curve approximation, tone corresponding
to said detection value containing noise out of said results of detection; and
a tone correction unit creating tone correction data based on said results of detection corrected by said correction unit
and correcting the tone of an input image.
|