| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an image forming apparatus capable of forming an image density correction pattern capable of reducing an influence of an noise from an image carrier on the mean value of the signal intensity in detecting the image density correction pattern constituted of a plurality of density patches formed on an image carrier by a sensor, and then, obtaining the mean value of the detected signal intensity. <P>SOLUTION: The image density correction pattern 80 constituted of the plurality of density patches 81a to 81j is formed on the image carrier by an image forming unit. Regarding the low-density patch formed on the image carrier while largely exposing the image carrier, and where the signal intensity detected by the sensor becomes uneven and the signal intensity is easily influenced by the noise from the image carrier, the length of the lower-density patch is made longer in the carrying direction of the image carrier, then, the influence of the image carrier is reduced in obtaining the mean value of the signal intensity. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
