Bicolor image forming apparatus for forming a bicolor image on a photoconductive element

An image forming apparatus comprising:

• a rotatable photoconductive element;
• charging means located to face periphery of said photoconductive element;
• deflection scanning type exposing means for deflecting a light beam issuing from a beam emitting element toward said photoconductive element;
• first developing means for developing an electrostatic latent image formed on the periphery of said photoconductive element by said deflection scanning type exposing means;
• line type exposing means located to face part of the periphery of said photoconductive element other than part where the light beam from said deflection scanning type exposing means is incident;
• and
• second developing means for developing an electrostatic latent image formed on the periphery of said photoconductive element by said line type exposing means;
• wherein a pixel density is smaller in said line type exposing means than in said deflection scanning type exposing means.

An image forming apparatus comprising:

• a rotatable photoconductive element;
• charging means located to face periphery of said photoconductive element;
• deflection scanning type exposing means for deflecting a light beam issuing from a beam emitting element toward said photoconductive element;
• first developing means for developing an electrostatic latent image formed on the periphery of said photoconductive element by said deflection scanning type exposing means;
• line type exposing means located to face part of the periphery of said photoconductive element other than part where the light beam from said deflection scanning type exposing means is incident;
• and
• second developing means for developing an electrostatic latent image formed on the periphery of said photoconductive element by said line type exposing means;
• wherein the electrostatic latent images formed on said photoconductive element by said deflection scanning type exposing means and said line type exposing means are each developed in a particular color by an associated one of said first developing means and said second developing means, said apparatus further comprising image position changing means for changing an image position of at least one of said deflection scanning type exposing means and said line type exposing means in a main scanning direction.

An image forming apparatus comprising:

• a rotatable photoconductive element;
• charging means located to face periphery of said photoconductive element;
• deflection scanning type exposing means for deflecting a light beam issuing from a beam emitting element toward said photoconductive element;
• first developing means for developing an electrostatic latent image formed on the periphery of said photoconductive element by said deflection scanning type exposing means;
• line type exposing means located to face part of the periphery of said photoconductive element other than part where the light beam from said deflection scanning type exposing means is incident;
• and
• second developing means for developing an electrostatic latent image formed on the periphery of said photoconductive element by said line type exposing means;
• wherein the electrostatic latent images formed on said photoconductive element by said deflection scanning type exposing means and said line type exposing means are each developed in a particular color by an associated one of said first developing means and said second developing means, said apparatus further comprising image position adjusting means for displacing said line type exposing means in a direction of rotation of said photoconductive element.

An image forming apparatus comprising:

• a rotatable photoconductive element;
• charging means located to face periphery of said photoconductive element;
• deflection scanning type exposing means for deflecting a light beam issuing from a beam emitting element toward said photoconductive element;
• first developing means for developing an electrostatic latent image formed on the periphery of said photoconductive element by said deflection scanning type exposing means;
• line type exposing means located to face part of the periphery of said photoconductive element other than part where the light beam from said deflection scanning type exposing means is incident;
• and
• second developing means for developing an electrostatic latent image formed on the periphery of said photoconductive element by said line type exposing means;
• wherein the electrostatic latent images formed on said photoconductive element by said deflection scanning type exposing means and said line type exposing means are each developed in a particular color by an associated one of said first developing means and said second developing means, said apparatus further comprising a rod lens array included in said line type exposing means and comprising a number of lenses arranged in a sector in matching relation to an f-theta characteristic of an f-theta lens included in said direction scanning type exposing means.