Apparatus for forming multi-color image with control of unintended reverse-transfer of developer image onto photoconductor

An apparatus for forming a multi-color image, comprising:

• a plurality of developer units that contain a plurality of single-color developer materials, respectively, the plurality of developer materials having respective different single colors;
• a latent-image forming device that forms each latent image on a photoconductor, using each corresponding one of the plurality of developer materials that has been supplied from each corresponding one of the plurality of developer units;
• a developer-image forming device that visualizes the each latent image which has been previously formed, into each corresponding single-color separated-developer-image, and electrically transfers in sequence the each single-color separated-developer-image which has been previously formed, from the photoconductor onto an image transferred medium onto which the each single-color separated-developer-image is to be sequentially transferred, for a superimposed registration of a plurality of single-color separated-developer-images, to thereby form a multi-color composite-developer-image on the image transferred medium;
• and
• a charge amount adjuster that reduces a charge amount of a previously-formed separated-developer-image subset of a plurality of separated-developer-images required to be sequentially transferred onto the image transferred medium for formation of the multi-color composite-developer-image, the previously-formed separated-developer-image subset having been previously transferred onto the image transferred medium.

An apparatus for forming a multi-color image, comprising:

• a plurality of developer units that contain a plurality of single-color developer materials, respectively, the plurality of developer materials having respective different single colors;
• a latent-image forming device that forms each latent image on a photoconductor, using each corresponding one of the plurality of developer materials that has been supplied from each corresponding one of the plurality of developer units;
• a developer-image forming device that visualizes the each latent image which has been previously formed, into each corresponding single-color separated-developer-image, and that electrically transfers in sequence the each single-color separated-developer-image which has been previously formed, from the photoconductor onto an image transferred medium onto which the each single-color separated-developer-image is to be sequentially transferred, for a superimposed registration of a plurality of single-color separated-developer-images, to thereby form a multi-color composite-developer-image on the image transferred medium;
• a discharger that discharges at least one of a plurality of single-color separated-developer-images required to be sequentially transferred onto the image transferred medium for formation of the multi-color composite-developer-image, the at least one separated-developer-image having been transferred onto the photoconductor;
• and
• a charger that charges the at least one separated-developer-image upon discharging by the discharger.