JP2012014176A5 - - Google Patents

Description

In order to solve the above problems, the present invention has the following configuration.
(1) a plurality of photoconductors corresponding to the respective colors to be rotationally driven, and process means that are arranged in the vicinity of each photoconductor and act on the photoconductor to form a toner image on the photoconductor; in the color image forming apparatus Ru includes an image forming unit including a plurality of irradiating means for forming an electrostatic latent image for detection on the respective photoconductor is irradiated with light, and
The irradiation means based on the timing of the photosensitive body is irradiated with light to form an electrostatic latent image for detection, based on the electrostatic latent image of electrostatic latent image or the detection for detecting that the formed Detecting means for detecting a time until the toner image reaches the process means;
Based on said time detected by the detection means, a color image forming apparatus, characterized in that it comprises a control means for performing the color misregistration correction control, the.

Claims (9)

A plurality of photoconductors corresponding to each color to be driven to rotate, a process unit which is arranged in the vicinity of each photoconductor and acts on the photoconductor to form a toner image on the photoconductor, and irradiates light in to the color image forming apparatus Ru includes an image forming unit including a plurality of irradiation means, a to form an electrostatic latent image for detection on each photoconductor,
The irradiation means based on the timing of the photosensitive body is irradiated with light to form an electrostatic latent image for detection, based on the electrostatic latent image of electrostatic latent image or the detection for detecting that the formed Detecting means for detecting a time until the toner image reaches the process means;
Based on said time detected by the detection means, a color image forming apparatus, characterized in that it comprises a control means for performing the color misregistration correction control, the. Developing a photosensitive member is rotated, the charging means for charging the photosensitive member, irradiating means for forming an electrostatic latent image for detection on the photosensitive member is irradiated with light, an electrostatic latent image for the detection in the color image forming apparatus having an image forming unit including to developing means for forming a toner image on the photoreceptor, a transfer unit that transfers on said photosensitive toner image formed on the belt, and
The irradiation means based on the timing of the photosensitive body is irradiated with light to form an electrostatic latent image for detection, based on the electrostatic latent image of electrostatic latent image or the detection for detecting that the formed Detecting means for detecting a time until the toner image reaches the charging means, the developing means or the transfer means;
Based on said time detected by the detection means, a color image forming apparatus, characterized in that it comprises a control means for performing the color misregistration correction control, the. The color image forming apparatus according to claim 1, wherein the control unit performs color misregistration correction control based on a comparison between a time detected by the detection unit and a reference value. The detection unit is configured to output an output value relating to the surface potential of the photoconductor output from the high voltage power supply device connected to the charging unit, the developing unit, the transfer unit, or the process unit to meet a specific condition. the color image forming apparatus according to any one of claims 1 to 3, characterized in that measuring the time. The color image forming apparatus according to claim 4 , wherein the output value related to the surface potential is a detected value of a current or a detected value of a voltage output from the high-voltage power supply device. The image forming unit forms a detection toner image on the belt, the detection unit detects the detection toner image formed on the belt, and the control unit detects the detection toner image. 6. The electrostatic latent image for detection is formed on the photosensitive member by causing the irradiation unit to emit light following color misregistration correction control based on a result, and the detection electrostatic latent image is formed according to any one of claims 1 to 5 . Color image forming apparatus. The color image forming apparatus according to any one of claims 1 to 6, characterized in that it comprises a storage unit for storing the time detected by said detecting means as a reference value. The control means irradiates the light on the photoconductor by irradiating the light at the same rotational position as the photoconductor when the electrostatic latent image for detection corresponding to the reference value is formed. The color image forming apparatus according to claim 7 , wherein an electrostatic latent image is formed. The control means forms the detection electrostatic latent images at a plurality of positions of the photoconductor by the irradiation means, and the storage means is detected corresponding to each of the detection electrostatic latent images. Storing the representative time calculated by the control means based on the determined time,
Thereafter, the detection means detects the time for each detection electrostatic latent image formed by the irradiation means at a plurality of positions of the photoconductor,
8. The color image forming apparatus according to claim 7 , wherein the control unit performs the color misregistration correction control based on the representative time and the time detected for each of the electrostatic latent images for detection. .