Method of development
AssigneeXerox Corporation
InventorRaymond W. Huggins
Life of this patent
Estimating the term…
Abstract
An apparatus in which a latent image recorded on an image bearing member is developed by transporting an electrically conductive developer material into contact therewith in a development zone. The pressure applied on the developer material in the development zone is controlled so as to maintain the conductivity thereof at a selected level.
Claims5
A method of developing a latent image recorded on an image bearing member with an electrically conductive developer material, including the steps of:
- transporting the electrically conductive developer material into contact with the image bearing member in a development zone on a rotating tubular member by generating a magnetic field to attract the developer material to the tubular member;
- and
- increasing the intensity of the magnetic field between the image bearing member and the tubular member to apply a selected pressure to the developer material to adjust the electrical conductivity of the developer material to enhance solid area latent image development, or decreasing the intensity of the magnetic field between the image bearing member and the tubular member to apply a selected pressure to the developer material to adjust the electrical conductivity of the developer material to enhance line latent image development.
A method of electrophotographic printing, including the steps of:
- transporting an electrically conductive developer material into contact with a photoconductive surface on a rotating non-magnetic tubular member by generating a magnetic field to attract the developer material to the tubular member so the developer material moves into a development zone;
- and
- adjusting the intensity of the magnetic field to apply relatively more pressure to the developer material to increase the electrical conductivity of the developer material to enhance development of solid area latent images, or adjusting the intensity of the magnetic field to apply relatively less pressure to the developer material to decrease the electrical conductivity of the developer material to enhance development of line latent images.
A method for developing a latent image recorded on an image bearing member with an electrically conductive developer material comprising the steps of:
- transporting the electrically conductive developer material into contact with the image bearing member in a development zone to develop the latent image recorded thereon;
- generating a magnetic field to attract the developer material to said transporting means;
- and
- adjusting the pressure applied on the developer material in the development zone to apply relatively more pressure on the developer material to increase the electrical conductivity of the developer material to enhance development of solid area latent images and to decrease the pressure applied on the developer material to apply relatively less pressure on the developer material to decrease the electrical conductivity of the developer material to enhance development of line latent images.
Dependencies are inferred from the claim text.