Recording medium holding apparatus, image forming apparatus, and image forming method

Abstract

According to one embodiment, an image forming apparatus includes an endless device, a power supply unit, an electric charge supplementary unit, and an image forming unit. The endless device is rotated. The power supply unit supplies a recording medium on a surface of the endless device with an electric charge. The electric charge supplementary unit supplements the electric charge to the recording medium which is rotated together with the endless device in the state of being attracted to the surface of the endless device by the electric charge provided by the power supply unit. The image forming unit forms an image on the recording medium attracted to the surface of the endless device.

1 . A recording medium holding apparatus comprising:
 an endless device which rotates;   a power supply unit which supplies a recording medium onto the surface of the endless device with an electric charge; and   an electric charge supplementary unit which supplements the electric charge to the recording medium which is rotated together with the endless device in the state of being attracted to the surface of the endless device by the electric charge provided by the power supply unit.   
     
     
         2 . The recording medium holding apparatus according to  claim 1 , wherein,
 the electric charge supplementary unit supplements the electric charge to the recording medium whenever the endless device is rotated once.   
     
     
         3 . The recording medium holding apparatus according to  claim 1 , wherein,
 the electric charge supplementary unit supplements the electric charge by applying an electric potential difference to the recording medium, the electric potential difference being equal to or greater than an electric potential difference that is applied by the power supply unit for providing the recording medium the electric charge.   
     
     
         4 . The recording medium holding apparatus according to  claim 1 , wherein,
 the electric charge supplementary unit supplements the electric charge to the recording medium attracted to the surface of the endless device in a non-contact manner.   
     
     
         5 . The recording medium holding apparatus according to  claim 1 , wherein,
 the electric charge supplementary unit neutralizes the recording medium in case of peeling off the recording medium from the endless device.   
     
     
         6 . The recording medium holding apparatus according to  claim 1 , wherein,
 the electric charge supplementary unit neutralizes the surface of the endless device after peeling off the recording medium from the endless device.   
     
     
         7 . The recording medium holding apparatus according to  claim 1 , wherein,
 the electric charge supplementary unit supplements the electric charge to a tip of the recording medium.   
     
     
         8 . The recording medium holding apparatus according to  claim 1 , wherein,
 the electric charge supplementary unit supplements the electric charge to a rear of the recording medium.   
     
     
         9 . The recording medium holding apparatus according to  claim 1 , wherein,
 the electric charge supplementary unit supplements the electric charge by applying an electric potential difference to the recording medium depending on the state of the recording medium.   
     
     
         10 . The recording medium holding apparatus according to  claim 1 , wherein,
 the endless device is a drum.   
     
     
         11 . An image forming apparatus comprising:
 an endless device which rotates;   a power supply unit which supplies a recording medium on a surface of the endless device with an electric charge;   an electric charge supplementary unit which supplements the electric charge to the recording medium which is rotated together with the endless device in a state of being attracted to the surface of the endless device by the electric charge provided by the power supply unit; and   an image forming unit which forms an image on the recording medium attracted to the surface of the endless device.   
     
     
         12 . The image forming apparatus according to  claim 11 , wherein,
 the electric charge supplementary unit supplements the electric charge to the recording medium whenever the endless device is rotated once.   
     
     
         13 . The image forming apparatus according to  claim 11 , wherein,
 the electric charge supplementary unit supplements the electric charge by applying an electric potential difference to the recording medium, the electric potential difference being equal to or greater than an electric potential difference that is applied by the power supply unit for providing the recording medium the electric charge.   
     
     
         14 . The image forming apparatus according to  claim 11 , wherein,
 the endless device is a drum.   
     
     
         15 . The image forming apparatus according to  claim 11 , wherein,
 the electric charge supplementary unit supplements the electric charge to a tip of the recording medium.   
     
     
         16 . The image forming apparatus according to  claim 11 , wherein,
 the electric charge supplementary unit supplements the electric charge to a rear of the recording medium.   
     
     
         17 . The image forming apparatus according to  claim 11 , wherein,
 the electric charge supplementary unit supplements the electric charge by applying an electric potential difference depending on the state of the recording medium to the recording medium.   
     
     
         18 . The image forming apparatus according to  claim 11 , wherein,
 the electric charge supplementary unit supplements the electric charge by applying an electric potential difference to the recording medium depending on an image forming condition of the recording medium.   
     
     
         19 . An image forming method comprising:
 rotating an endless device;   supplying a recording medium on a surface of the endless device with an electric charge;   supplementing the electric charge to the recording medium which is rotated together with the endless device in the state of being attracted to the surface of the endless device by the electric charge; and   forming an image on the recording medium attracted to the surface of the endless device.   
     
     
         20 . The image forming method of according to  claim 19 , wherein
 the electric charge is supplemented to the recording medium whenever the endless device is rotated once.