摘要:
An image development method and apparatus in which image-wise charging of a toner layer (58) is accomplished by induced air breakdown electrical discharge such that free mobile ions are introduced in the vicinity of an electrostatic latent image coated with a layer of developing material. The latent image causes the free mobile ions to flow in an image-wise ion stream corresponding to the latent image, which, in turn, leads to image-wise charging of the toner layer (58), such that the toner layer (58) itself becomes the latent image carrier. The latent image carrying toner layer is subsequently developed and transferred to a copy substrate to produce an output document (70).
摘要:
An image development method and apparatus, wherein an imaging member (12) having an imaging surface is provided with a layer of marking material (58) thereon, and an electrostatic latent image is created (by 40) in the layer of marking material (58). Image-wise charging of the layer of marking material (58) is accomplished by a wide beam ion source (60) such that free mobile ions are introduced in the vicinity of an electrostatic latent image associated with the imaging member having the layer of marking material (58) coated thereon. The latent image associated with the imaging member causes the free mobile ions to flow in an image-wise ion stream corresponding to the latent image, which, in turn, leads to image-wise charging of the toner layer (58), such that the toner layer itself becomes the latent image carrier. The latent image carrying toner layer is subsequently developed and transferred to a copy substrate (70) to produce an output document.
摘要:
An image development method and apparatus, wherein a support member (12) is provided with a layer (58) of marking material thereon, and an electrostatic latent image is created in the layer of marking material via image-wise charging of the layer of marking material by a selectively controllable charging device (60) for directing a charge stream toward the support member (12) having the layer (58) of marking material coated thereon. The image-wise charge stream corresponds to the latent image, which, in turn, leads to image-wise charging of the toner layer (58), such that the toner layer itself becomes the latent image carrier. The latent image carrying toner layer is subsequently developed and transferred to a copy substrate (70) to produce an output document.
摘要:
A multicolor image reproduction machine (500) includes a main assembly having a biased image bearing member (502), a controller (15), and a plurality of color separation toner image forming units (100,200,300,400) each having a photoreceptor (112,212,312,412) including a photoconductive surface (113) forming a toner image separation development nip (512,522,532,542) with the image bearing member (502). Each imaging unit (100,200,300,400) includes a toner supply apparatus (150,250,350,450) for applying a layer of toner (158) of a particular color onto the photoconductive surface (113); a first charging device (130) for uniformly charging the photoconductive surface (113) mounted downstream of the imaging unit relative to movement of the photoreceptor; an exposure device (140,240,340,440) connected to the controller (15) for image-wise exposing the photoconductive surface (113) and the layer of toner (158) to form therein image areas (172) and background areas (174) of a desired image mounted downstream of the first charging device relative to movement of the photoconductor; and a second charging device (160) connected to the controller (15) for selectively reversing charge in the background areas (174) of the desired image, so as to enable subsequent separation of the background areas (174) from the image areas (172) mounted downstream of the exposure device relative to movement of the photoreceptor. The multicolor image reproduction machine (500) further includes a separation development assembly for separating and developing the image areas (172) of the desired image from the layer of toner (158) and onto the image bearing member (502) of the main assembly to form a multicolor toner image at the image separation nip (512,522,532,542).
摘要:
An image development method and apparatus in which image-wise charging of a toner layer (58) is accomplished by induced air breakdown electrical discharge such that free mobile ions are introduced in the vicinity of an electrostatic latent image coated with a layer of developing material. The latent image causes the free mobile ions to flow in an image-wise ion stream corresponding to the latent image, which, in turn, leads to image-wise charging of the toner layer (58), such that the toner layer (58) itself becomes the latent image carrier. The latent image carrying toner layer is subsequently developed and transferred to a copy substrate to produce an output document (70).
摘要:
A multicolor image-on-image reproduction machine includes a main assembly, a controller, a movable image bearing member having a path of movement, and a plurality of air breakdown charge and development (ABCD) imaging units mounted along the path of movement for forming color separation toner images. Each (ABCD) imaging unit includes a photoreceptor having a photoconductive surface forming a toner image separation development nip with the movable image bearing member; a toner supply apparatus for applying a layer of toner onto the photoconductive surface; a charging device for uniformly charging the photoconductive surface through the layer of toner; and an exposure device connected to the controller for image-wise exposing of the photoconductive surface and the layer of toner to form therein image areas and background areas of a desired color separation image. The multicolor image-on-image reproduction machine then includes a bias source for biasing the image bearing member at the toner image separation development nip to a potential sufficient to cause air breakdown selective recharging of the background areas of the layer of toner, thereby enabling the image areas of the layer of toner to be separated and developed as a color separation toner image onto the movable image bearing member, and the background areas thereof to remain on the photoreceptor.
摘要:
An image development method and apparatus, wherein a support member (12) is provided with a layer (58) of marking material thereon, and an electrostatic latent image is created in the layer of marking material via image-wise charging of the layer of marking material by a selectively controllable charging device (60) for directing a charge stream toward the support member (12) having the layer (58) of marking material coated thereon. The image-wise charge stream corresponds to the latent image, which, in turn, leads to image-wise charging of the toner layer (58), such that the toner layer itself becomes the latent image carrier. The latent image carrying toner layer is subsequently developed and transferred to a copy substrate (70) to produce an output document.