Image forming apparatus having a density sensor movable in a main scanning direction

摘要

An image forming apparatus includes a photoconductor, an optical scanner, a development device, a movable density sensor, a density sensor driver, and a processor. The optical scanner includes a light source to emit light, and irradiates a surface of the photoconductor in a main scanning direction with the light to form a latent image on the surface of the photoconductor. The development device develops the latent image into a toner image. The density sensor detects unevenness in density of the toner image in the main scanning direction. The density sensor driver moves the density sensor in the main scanning direction. The processor corrects a driving signal for the light source according to image data to reduce the unevenness in density in the main scanning direction, according to positional data of the density sensor in the main scanning direction and an output value of the density sensor.

主权项

1. An image forming apparatus, comprising:
a photoconductor; an optical scanner, including a light source to emit light, to irradiate a surface of the photoconductor in a main scanning direction with the light to form a latent image on the surface of the photoconductor; a development device to develop the latent image into a toner image; a movable first density sensor to continuously detect unevenness in density of the toner image in the main scanning direction while being moved in the main scanning direction by a density sensor driver; the density sensor driver to move the first density sensor in the main scanning direction; and a processor to correct a driving signal for the light source according to image data to reduce the unevenness in density in the main scanning direction, according to positional data of the first density sensor in the main scanning direction and output values of the first density sensor obtained while being moved in the main scanning direction.