Sleeve rotation-feed apparatus, developing apparatus, image formation apparatus, and fixation apparatus

A sleeve rotation-feed apparatus comprising:

• a drive roller having a roller surface formed by a material of a high resistance and a plurality of linear electrodes extending in axial direction of the roller and arranged in a circumferential direction, wherein every other electrode constitutes an electrode block electrically connected, thus obtaining two electrode blocks;
• a power source for applying a potential difference between the two electrode blocks;
• a separator arranged in the proximity of the drive roller;
• and
• a sleeve arranged so as to surround the drive roller and the separator in such a manner that a portion of the sleeve is in contact with the drive roller,
• wherein the separator separates the sleeve from the drive roller,
• wherein the electrode blocks of the drive roller are used to absorb a portion of the sleeve to a portion of the roller surface, so as to be fed.

A developing apparatus comprising:

• a sleeve rotation-feed apparatus including:
• a drive roller in which at least a portion of the roller surface is a dielectric layer;
• an electric charger for charging the roller surface of the drive roller;
• a power source for applying a potential difference between the roller surface of the drive roller and the electric charger;
• a separator arranged in the proximity of the drive roller;
• and
• a sleeve arranged so as to surround the drive roller, the electric charger, and the separator in such a manner that a portion of the sleeve is in contact with the drive roller,
• wherein the separator separates the sleeve from the drive roller,
• wherein the dielectric layer of the drive roller is used to absorb a portion of the sleeve to a portion of the roller surface, so as to be fed;
• a toner supplier for supplying toner to a surface of the sleeve;
• and
• a doctor blade for regulating a toner layer.

A developing apparatus comprising:

• a sleeve rotation-feed apparatus comprising:
• a drive roller having a roller surface formed by a material of a high resistance and a plurality of linear electrodes extending in axial direction of the roller and arranged in a circumferential direction, wherein every other electrode constitutes an electrode block electrically connected, thus obtaining two electrode blocks;
• a power source for applying a potential difference between the two electrode blocks;
• a separator arranged in the proximity of the drive roller;
• and
• a sleeve arranged so as to surround the drive roller and the separator in such a manner that a portion of the sleeve is in contact with the drive roller,
• wherein the separator separates the sleeve from the drive roller,
• wherein the electrode blocks of the drive roller are used to absorb a portion of the sleeve to a portion of the roller surface, so as to be fed;
• a toner supplier for supplying toner to a surface of the sleeve;
• and
• a doctor blade for regulating a toner layer.

An image formation apparatus comprising:

• a sleeve rotation-feed apparatus including:
• a drive roller in which at least a portion of the roller surface is a dielectric layer;
• an electric charger for charging the roller surface of the drive roller;
• a power source for applying a potential difference between the roller surface of the drive roller and the electric charger;
• a separator arranged in the proximity of the drive roller;
• and
• a sleeve arranged so as to surround the drive roller, the electric charger, and the separator in such a manner that a portion of the sleeve is in contact with the drive roller, the sleeve having a photosensitive layer on its outer surface,
• wherein the separator separates the sleeve from the drive roller,
• wherein the dielectric layer of the drive roller is used to absorb a portion of the sleeve to a portion of the roller surface, so as to be fed.

An image formation apparatus comprising:

• a sleeve rotation-feed apparatus including:
• a drive roller having a roller surface formed by a material of a high resistance and a plurality of linear electrodes extending in an axial direction of the roller and arranged in a circumferential direction, wherein every other electrode constitutes an electrode block electrically connected, thus obtaining two electrode blocks;
• a power source for applying a potential difference between the two electrode blocks;
• a separator arranged in the proximity of the drive roller;
• and
• a sleeve arranged so as to surround the drive roller and the separator in such a manner that a portion of the sleeve is in contact with the drive roller, the sleeve having a photosensitive layer on its outer surface,
• wherein the separator separates the sleeve from the drive roller,
• wherein the electrode blocks of the drive roller are used to absorb a portion of the sleeve to a portion of the roller surface, so as to be fed.

A fixation apparatus comprising:

• a sleeve rotation-feed apparatus including:
• a drive roller in which at least a portion of the roller surface is a dielectric layer;
• a heater arranged in the drive roller for heating the roller surface of the drive roller;
• an electric charger for charging the roller surface of the drive roller;
• a power source for applying a potential difference between the roller surface of the drive roller and the electric charger;
• a separator arranged in the proximity of the drive roller;
• and
• a sleeve arranged so as to surround the drive roller, the electric charger, and the separator in such a manner that a portion of the sleeve is in contact with the drive roller,
• wherein the separator separates the sleeve from the drive roller,
• wherein the dielectric layer of the drive roller is used to absorb a portion of the sleeve to a portion of the roller surface, so as to be fed.

A fixation apparatus comprising:

• a sleeve rotation-feed apparatus including:
• a drive roller having a roller surface formed by a material of a high resistance and a plurality of linear electrodes extending in an axial direction of the roller and arranged in a circumferential direction, wherein every other electrode constitutes an electrode block electrically connected, thus obtaining two electrode blocks;
• a power source for applying a potential difference between the two electrode blocks;
• a separator arranged in the proximity of the drive roller;
• and
• a sleeve arranged so as to surround the drive roller and the separator in such a manner that a portion of the sleeve is in contact with the drive roller,
• wherein the separator separates the sleeve from the drive roller,
• wherein the electrode blocks of the drive roller are used to absorb a portion of the sleeve to a portion of the roller surface, so as to be fed.