Electrostatic recording apparatus having a floating electrode on a photoelectric transfer member

An electrostatic recording apparatus for forming an electrostatic image on an electric charge carrying member, comprising:

• a photoelectric transfer member spaced from the electric charge carrying member by a predetermined distance for generating carriers when being exposed to light;
• a floating electrode provided on a first surface of the photoelectric transfer member, the floating electrode being opposed to a first surface of the electric charge carrying member, and the floating electrode having an electric discharge terminal thereon close to the electric charge carrying member;
• an electric power supply for applying a voltage between a second surface of the photoelectric transfer member and a second surface of the electric charge carrying member so that the electric potential of the photoelectric transfer member is higher than that of the electric charge carrying member;
• an exposure device for exposing the second surface of the photoelectric transfer member, whereby the carriers generated in the photoelectric transfer member move toward the floating electrode to cause an electric discharge between the electric discharge terminal of the floating electrode and the electric charge carrying member, which allows an electrostatic image to be formed on the electric charge carrying member;
• and
• an acceleration electrode positioned apart from the electric discharge terminal of the floating electrode and by a predetermined distance from the electric charge carrying member.

An electrostatic recording apparatus for forming an electrostatic image on an electric charge carrying member, comprising:

• a photoelectric transfer member which is spaced from the electric discharge carrying member with a predetermined distance and generates carriers when being exposed to light;
• a floating electrode provided on a first surface of the photoelectric transfer member, the floating electrode being opposed to a first surface of the electric charge carrying member;
• an acceleration electrode positioned apart from the floating electrode with a predetermined distance toward the electric charge carrying member;
• and
• a first electric power supply for applying a voltage between the second surface of the photoelectric transfer member and the acceleration electrode so that the electric potential of the photoelectric transfer member is higher than that of the acceleration electrode;
• a second electric power supply for applying a voltage between the acceleration electrode and the second surface of the electric charge carrying member so that the electric potential of the acceleration electrode is higher than that of the electric charge carrying member;
• and
• an exposure device for exposing a second surface of the photoelectric transfer member, whereby the carriers generated in the photoelectric transfer member move toward the floating electrode to cause an electric discharge between the floating electrode and the acceleration electrode, which allows an electric charge generated by the electric discharge to be held on the electric charge carrying member to form an electrostatic image.

An electrostatic recording apparatus for forming an electrostatic image on an electric charge carrying member, comprising:

• a photoelectric transfer member which is spaced from the electric discharge carrying member with a predetermined distance and generates carriers when being exposed to light;
• a floating electrode provided on a first surface of the photoelectric transfer member, the floating electrode being opposed to a first surface of the electric charge carrying member;
• a supplementary electrode provided on the first surface of the photoelectric transfer member, the supplementary electrode being spaced from the floating electrode with a predetermined distance;
• a first electric power supply for applying a voltage between the second surface of the photoelectric transfer member and the supplementary electrode so that the electric potential of the photoelectric transfer member is higher than that of the supplementary electrode;
• a second electric power supply for applying a voltage between the supplementary electrode and the second surface of the electric charge carrying member so that the electric potential of the supplementary electrode is higher than that of the electric charge carrying member;
• and
• an exposure device for exposing a second surface of the photoelectric transfer member, whereby the carriers generated in the photoelectric transfer member move toward the floating electrode to cause an electric discharge between the floating electrode and the supplementary electrode, which allows an electric charge generated by the electric discharge to be held on the electric charge carrying member to form an electrostatic image.

An image forming apparatus, comprising:

• a movable electric charge carrying member;
• a photoelectric transfer member spaced from the movable electric charge carrying member by a predetermined distance for generating carriers when exposed to light;
• a floating electrode provided on a first surface of the photoelectric transfer member, the floating electrode including a plurality of electrodes electrically insulated from each other, each electrode of the floating electrode being opposed to a first surface of the electric charge carrying member and having an electric discharge terminal thereon, close to the electric charge carrying member;
• an electric power supply for applying a voltage between a second surface of the photoelectric transfer member and a second surface of the electric charge carrying member so that the electric potential of the photoelectric transfer member is higher than that of the electric charge carrying member;
• and
• an exposure device for exposing a second surface of the photoelectric transfer member,
• whereby the carriers generated in the photoelectric transfer member move toward said each electrode of the floating electrode to cause an electric discharge between the electric discharge terminal of said each electrode of the floating electrode and the electric charge carrying member, which allows an electrostatic image to be formed on the movable electric charge carrying member.

An image forming apparatus, comprising:

• an electric charge carrying member movable to a predetermined direction;
• a photoelectric transfer carrying member which is spaced from the electric charge carrying member with a predetermined distance and generates carriers when being exposed to light;
• a floating electrode provided on a first surface of the photoelectric transfer member, the floating electrode being opposed to a first surface of the electric charge carrying member;
• an acceleration electrode positioned apart from the floating electrode with a predetermined distance toward the electric charge carrying member;
• and
• a first electric power supply for applying a voltage between the second surface of the photoelectric transfer member and the acceleration electrode so that the electric potential of the photoelectric transfer member is higher than that of the acceleration electrode;
• a second electric power supply for applying a voltage between the acceleration electrode and the second surface of the electric charge carrying member so that the electric potential of the acceleration electrode is higher than that of the electric charge carrying member;
• and
• an exposure device for exposing a second surface of the photoelectric transfer member, whereby the carriers generated in the photoelectric transfer member move toward the floating electrode to cause an electric discharge between the floating electrode and the acceleration electrode, which allows an electric charge generated by the electric discharge to be held on the electric charge carrying member to form an electrostatic image.

An image forming apparatus, comprising:

• an electric charge carrying member movable to a predetermined direction;
• a photoelectric transfer member which is spaced from the electric charge carrying member with a predetermined distance and generates carriers when being exposed to light;
• a floating electrode provided on a first surface of the photoelectric transfer member, the floating electrode being opposed to a first surface of the electric charge carrying member;
• a supplementary electrode provided on the first surface of the photoelectric transfer member, the supplementary electrode being spaced from the floating electrode with a predetermined distance;
• a first electric power supply for applying a voltage between the second surface of the photoelectric transfer member and the supplementary electrode so that the electric potential of the photoelectric transfer member is higher than that of the supplementary electrode;
• a second electric power supply for applying a voltage between the supplementary electrode and the second surface of the electric charge carrying member so that the electric potential of the supplementary electrode is higher than that of the electric charge carrying member;
• and
• an exposure device for exposing a second surface of the photoelectric transfer member, whereby the carriers generated in the photoelectric transfer member move toward the floating electrode to cause an electric discharge between the floating electrode and the supplementary electrode, which allows an electric charge generated by the electric discharge to be held on the electric charge carrying member to form an electrostatic image.