Image forming apparatus

An image forming apparatus, comprising:

• an image forming unit which performs image forming on a paper;
• an image carrier on which a toner image is formed by the image forming unit;
• a patch image generation unit which generates a patch image for image density detection so as to be disposed between toner images of images formed consecutively on the image carrier;
• a patch density sensor which detects a density of the patch image generated by the patch image generation unit;
• a correction unit which performs correction processing to match a detected density and an aimed density by comparing the detected density of the patch image detected by the patch density sensor and the aimed density of the patch image which is set in advance;
• a toner deposit control unit which controls a toner deposit when the image forming unit performs image forming;
• and
• a paper interval control unit which control an interval between consecutive papers,
• wherein
• in a case where the patch image generation unit generates the patch image when the toner deposit is changed to be greater than a predetermined standard value, the paper interval control unit executes a paper interval broadening processing to make the interval between consecutively conveyed papers be longer than a standard interval, the image forming unit makes an interval between the toner images of images formed consecutively on the image carrier be longer than a standard interval, and the toner deposit control unit executes a toner deposit changing processing to return the toner deposit to a predetermined standard value.