Abstract: A superposed image forming apparatus wherein toner images are superposedly transferred onto a transfer material includes an image bearing member; a device for forming a toner image on the image bearing member; a transfer material carrying member, disposed opposed to the image bearing member, for carrying a transfer material in synchronism with the toner image on the image bearing member; a transfer material supplying device for supplying the transfer material to the transfer material carrying member; a transfer bias voltage source for applying to the transfer material carrying member a bias voltage for image transfer from the image bearing member to the transfer material; an attraction member for urging the transfer material to the transfer material carrying member to hold the transfer material on the transfer material carrying member; an attraction bias voltage source for applying a bias voltage to the attraction member; the bias voltage applied to the attraction member is changed in association with on-and-

Abstract: An image forming apparatus capable of performing a suitable transport that is free from the occurrence of an inner blank, and is free from image or color misalignment. A transfer member supporting member, for supporting a transfer member at a transfer position at which the toner image on the image carrier is transferred to the transfer member, has a dielectric layer defining its outer surface and an elastic layer provided inside the dielectric layer. The elastic layer preferably has a compression range between about 0 to 2 mm at the transfer position, and the total pressure of this compression is about 1 kg/mm in this compression range.

Abstract: An image forming apparatus includes a recording material carrying member for carrying a recording material; an image forming device for forming an image on a recording material carried on the recording material carrying member; an attraction member for electrostatically attracting the recording material on the recording material carrying member; and voltage applying source for applying an oscillating voltage to the attraction member.

Abstract: An image forming apparatus is provided with a latent image forming member for forming first and second electrostatic latent images on an image bearing member. A first developer forms a first visualized image by developing the first electrostatic latent image, and a second developer provides a second visualized image by developing the second electrostatic latent image. The second developer acts on the image bearing member after the first visualized image is formed on the image bearing member, and the second developer includes a developer carrier for carrying a developer to a developing position where the developer is supplied to the image bearing member. A vibratory voltage is applied to the developer carrier of the second developer. A controller changes a duty ratio of the vibratory voltage.

Abstract: The present invention provides an image forming apparatus comprising a first developing device for developing a first latent image to form a first toner image, a second developing device for acting on an image bearing member on which the first toner is formed to develop a second latent image thereby creating a second toner image, and an antioxidant material layer provided on a surface of a developing sleeve of the second developing device.

Abstract: An electrophotographic apparatus includes a movable electrophotographic photosensitive member, a charger for uniformly charging the photosensitive member, a first device for forming a first electrostatic latent image by exposing the photosensitive member charged by the charger to negative image light corresponding to first image information, a first developing device for developing through a reversal development the first electrostatic latent image into a first visualized image, a second device for exposing the photosensitive member having the first visualized image to positive image light corresponding to second image information to form a second electrostatic latent image, a second developing device for developing through a regular development the second electrostatic latent image into a second visualized image, wherein a potential level in an area of the photosensitive member exposed to the light by the second device is between a potential level in an area of the photosensitive member exposed to the light