Image forming method and apparatus with magnetic brush

An image forming method for forming an image on a sheet, comprising the steps of:

• forming an electrostatic latent image on a rotary endless latent image carrier;
• forming a magnetic brush with a developer, comprising magnetic toners and magnetic carriers, in a developing area, for developing the electrostatic latent image on said latent image carrier, and thereby for collecting residual toners on said latent image carrier, a toner density of the developer in the formed magnetic brush being set lower than a limiting toner density;
• and
• transferring said developed image on said latent image carrier to a sheet.

An image forming method for forming an image on a sheet, comprising the steps of:

• forming an electrostatic latent image on a rotary endless latent image carrier;
• forming a magnetic brush with a developer, comprising magnetic polymerization toners and magnetic carriers, in a developing area, for developing the electrostatic latent image on said latent image carrier, and thereby for collecting residual toners on said latent image carrier;
• and
• transferring said developed image on said latent image carrier to a sheet.

An image forming method for forming an image on a sheet, comprising the steps of:

• forming an electrostatic latent image on a rotary endless latent image carrier;
• forming a magnetic brush with a developer, comprising magnetic toners and magnetic carriers, by developer supplying means including a magnetic field generating member having a plurality of magnetic poles, provided in a rotatable sleeve, in a developing area, for developing the electrostatic latent image on said latent image carrier, and thereby for collecting residual toners on said latent image carrier, a toner density of the developer in the formed magnetic brush being set to near a limiting toner density;
• and
• transferring said developed image on said latent image carrier to a sheet.

An image forming method for forming an image on a sheet, comprising the steps of:

• forming an electrostatic latent image on rotary endless latent image carrier;
• forming a magnetic brush with a developer, comprising magnetic toners and magnetic carriers, by developer supplying means including a magnetic field generating member having a plurality of magnetic poles, provided in a rotatable sleeve, in a developing area, for developing the electrostatic latent image on said latent image carrier, and thereby for collecting residual toners on said latent image carrier, a toner density of the developer in the formed magnetic brush being set lower than a limiting toner density;
• and
• transferring said developed image on said latent image carrier to a sheet.

An image forming method for forming an image on a sheet, comprising the steps of:

• forming an electrostatic latent image on a rotary endless latent image carrier;
• forming a magnetic brush with a developer, comprising magnetic polymerization toners and magnetic carriers, by developer supplying means including a magnetic field generating member having a plurality of magnetic poles, provided in a rotatable sleeve, in a developing area, for developing the electrostatic latent image on said latent image carrier, and thereby for collecting residual toners on said latent image carrier;
• and
• transferring said developed image on said latent image carrier to a sheet.

An image forming apparatus for forming an image on a sheet, comprising:

• a rotary endless latent image carrier;
• image forming means for forming an electrostatic latent image on said latent image carrier;
• developing means including a developing room, and a rotatable sleeve and a fixed magnetic roller provided in the sleeve and having a plurality of magnetic poles in a circumferential direction of the fixed magnetic roller in the developing room, said developing means forming a magnetic brush with a developer comprising magnetic toners and magnetic carriers in the developing room, for developing the electrostatic latent image on said latent image carrier, and for collecting residual toners on said latent image carrier, a toner density of the developer in the developing room being set to near a limiting toner density;
• and
• transfer means for transferring said developed image on said latent image carrier to a sheet.

An image forming apparatus for forming an image on a sheet, comprising:

• a rotary endless latent image carrier;
• image forming means for forming an electrostatic latent image on said latent image carrier;
• developing means including a developing room, and a rotatable sleeve and a fixed magnetic roller provided in the sleeve and having a plurality of magnetic poles in a circumferential direction of the fixed magnetic roller in the developing room, said developing means forming a magnetic brush with a developer comprising magnetic toners and magnetic carriers in the developing room, for developing the electrostatic latent image on said latent image carrier, and for collecting residual toners on said latent image carrier, a toner density of the developer in the developing room being set lower than a limiting toner density;
• and
• transfer means for transferring said developed image on said latent image carrier to a sheet.

An image forming apparatus for forming an image on a sheet, comprising:

• a rotary endless latent image carrier;
• image forming means for forming an electrostatic latent image on said latent image carrier;
• developing means for forming a magnetic brush with a developer comprising magnetic polymerization toners and magnetic carriers in a developing room, for developing the electrostatic latent image on said latent image carrier, and for collection of residual toners on said latent image carrier;
• and
• transfer means for transferring said developed image on said latent image carrier to a sheet.

An image forming apparatus for forming an image on a sheet, comprising:

• a rotary endless latent image carrier;
• image forming means for forming an electrostatic latent image on said latent image carrier;
• developing means including a developing room for retaining a developer comprising magnetic toners and magnetic carriers, a toner supplying room for retaining magnetic toners to be supplied to the developing room, and magnetic brush forming means having a rotatable sleeve and a fixed magnetic roller provided in the sleeve and having a plurality of magnetic poles in a circumferential direction of the fixed magnetic roller in the developing room, said developing means forming a magnetic brush with a developer in the developing room, for developing the electrostatic latent image on said latent image carrier, and for collecting residual toners on said latent image carrier, a toner density of the developer in the developing room being set to near a limiting toner density;
• and
• transfer means for transferring said developed image on said latent image carrier to a sheet.

An image forming apparatus for forming an image on a sheet, comprising:

• a rotary endless latent image carrier;
• image forming means for forming an electrostatic latent image on said latent image carrier;
• developing means including a developing room for retaining a developer comprising magnetic toners and magnetic carriers, a toner supplying room for retaining magnetic toners to be supplied to the developing room, and magnetic brush forming means having a rotatable sleeve and a fixed magnetic roller provided in the sleeve having a plurality of magnetic poles in a circumferential direction of the fixed magnetic roller in the developing room, said developing means forming a magnetic brush with a developer in the developing room, for developing the electrostatic latent image on said latent image carrier, and for collection of residual toners on said latent image carrier, a toner density of the developer in the developing room being set lower than a limiting toner density;
• and
• transfer means for transferring said developed image on said latent image carrier to a sheet.

An image forming apparatus for forming an image on a sheet, comprising:

• a rotary endless latent image carrier;
• image forming means for forming an electrostatic latent image on said latent image carrier;
• developing means including a developing room for retaining a developer comprising magnetic polymerization toners and magnetic carriers, and a toner supplying room for retaining the magnetic polymerization toners to be supplied to the developing room, said developing means forming a magnetic brush with a developer in the developing room, for developing the electrostatic latent image on said latent image carrier, and for collecting residual toners on said latent image carrier;
• and
• transfer means for transferring said developed image on said latent image carrier to a sheet.

An image forming apparatus for forming an image on a sheet, comprising:

• a rotary endless latent image carrier;
• image forming means for forming an electrostatic latent image on said latent image carrier;
• developing means including a developing room retaining a developer comprising magnetic polymerization toners and magnetic carriers, and a developer supplying means including a rotatable sleeve and a magnetic field generating member provided in the sleeve and having a plurality of magnetic poles in a circumferential direction of the rotatable sleeve, said developing means forming a magnetic brush with a developer in the developing room, for developing the electrostatic latent image on said latent image carrier, and for collecting residual toners on said latent image carrier;
• and
• transfer means for transferring said developed image on said latent image carrier to a sheet.

An image forming apparatus for forming an image on a sheet, comprising:

• a rotary endless latent image carrier;
• image forming means for forming an electrostatic latent image on said latent image carrier;
• developing means for forming a magnetic brush with a developer comprising magnetic toners and magnetic carriers in a developing room, for developing the electrostatic latent image on said latent image carrier with the magnetic brush, and for collecting residual toners on said latent image carrier with the magnetic brush, a toner density of the developer in the developing room being set lower than a limiting toner density;
• and
• transfer means for transferring said developed image on said latent image carrier to a sheet.