Image forming apparatus

An image forming apparatus having an image forming portion capable of forming an image on a recording material using developer images of a plurality of colors including a first color and a second color, the image forming apparatus comprising:

• a data generator which generates first image data for forming a developer image of the first color and second image data for forming a developer image of the second color;
• and
• a unit which superimposes and forms developer images of a plurality of colors based on the first image data and the second image data generated by the data generator, wherein
• the image forming portion includes:
• a first image bearing member corresponding to the first color;
• a second image bearing member corresponding to the second color;
• a first light-emitting unit which irradiates a surface of the first image bearing member with light and which forms an electrostatic latent image based on the first image data;
• a second light-emitting unit which irradiates a surface of the second image bearing member with light and which forms an electrostatic latent image based on the second image data;
• a first developing member which supplies a developer to the electrostatic latent image formed on the first image bearing member;
• and
• a second developing member which supplies a developer to the electrostatic latent image formed on the second image bearing member,
• wherein the image forming portion operates in a normal mode and a wide color gamut mode, and to increase a developer supply capability from the second developing member to the second image bearing member in the wide color gamut mode compared to that in a normal mode,
• when operating in the wide color gamut mode, the unit forms a second developer image in a wide color gamut based on the second image data and a first developer image in a normal color gamut based on the first image data, and
• in the wide color gamut mode, the data generator generates image data of the second color corresponding to an image portion indicated by the first image data or generates image data of a plurality of colors constituting the second color corresponding to the image portion.