Photocopying – Contact printing – Light boxes
Patent
1995-07-25
1996-08-20
Moses, R. L.
Photocopying
Contact printing
Light boxes
118653, 355245, G03G 1508
Patent
active
055483860
ABSTRACT:
An image forming apparatus for forming an image in accordance with an external signal comprises a photosensitive drum, a charging unit for charging the surface of the photosensitive drum at a predetermined potential, an exposing unit for exposing the surface of the photosensitive drum and forming an electrostatic latent image, a developing apparatus for developing the electrostatic latent image on the photosensitive drum and forming a visible image, a transfer unit for transferring the visible image on the photosensitive drum onto a medium, and a fixing unit for fixing the visible image transferred onto the medium. The developing apparatus includes a storing unit for storing a toner, a developing roller rotated about a horizontal axis to supply the toner to the photosensitive drum, a guide member for defining a temporary storage space of the toner in cooperation with a downwardly rotating surface of the developing roller at a position higher than a horizontal ideal plane passing through an axis of the developing roller, and for adhering to the developing roller the toner moving downward within the storage space by the weight of the toner itself, a layer thickness limiting member for regulating the thickness of the toner adhered to the developing roller at a constant value, and an ejecting device for ejecting the toner from the storing unit into the storage space.
REFERENCES:
patent: 4458627 (1984-07-01), Hosono et al.
patent: 5138385 (1992-08-01), Toyoshi et al.
patent: 5389732 (1995-02-01), Sekino
Kabushiki Kaisha TEC
Moses R. L.
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