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US 5,170,213 AGranted
Developer unit utilizing a non-magnetic single component developer
AssigneeJapan Imaging System, Inc.
InventorsChiseki Yamaguchi, Kazuo Otuka
Life of this patent
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AssigneeJapan Imaging System, Inc.
InventorsChiseki Yamaguchi, Kazuo Otuka
Estimating the term…
A developer unit includes a porous conductive resilient member which rotates while partly contacting a developer holder to charge a non-magnetic single component developer and to supply it to the surface of the developer holder. A conductive constraining member forms a uniform thin layer of developer on the developer holder and also charges the developer to a given level. A developing bias voltage is applied to the developer holder via a rotatable fibrous charging member to cause the developer to fly to an image area of an electrostatic latent image formed on a latent image carrier which is disposed in opposing relationship with the developer holder with a gap therebetween. The bias voltage is also applied to the constraining member and to the charging member.
A developer unit receiving a non-magnetic single-component developer, the developer unit comprising:
A developer unit in which a non-magnetic single component developer is supplied to the surface of a developer holder and is formed into a uniform thin layer thereon by means of a constraining member, and in which a developing bias is applied to the developer holder to cause the developer to fly to an image area of an electrostatic latent image formed on a latent image carrier which is disposed in opposing relationship with the developer holder with a gap therebetween, comprising
A developer unit in which a non-magnetic single component developer is supplied to the surface of a developer holder and is formed into a uniform thin layer thereon by means of a constraining member, and in which a developing bias is applied to the developer holder to cause the developer to fly to an image area of an electrostatic latent image formed on a latent image carrier which is disposed in opposing relationship with the developer holder with a gap therebetween, comprising
A developer unit in which a non-magnetic single component developer is supplied to the surface of a developer holder and is formed into a uniform thin layer thereon by means of a constraining member, and in which a developing bias is applied to the developer holder to cause the developer to fly to an image area of an electrostatic latent image formed on a latent image carrier which is disposed in opposing relationship with the developer holder with a gap therebetween, comprising
A developer unit in which a non-magnetic single component developer is supplied to the surface of a developer holder and is formed into a uniform thin layer thereon by means of a constraining member, and in which a developing bias is applied to the developer holder to cause the developer to fly to an image area of an electrostatic latent image formed on a latent image carrier which is disposed in opposing relationship with the developer holder with a gap therebetween, comprising
A developer unit in which a non-magnetic single component developer is supplied to the surface of a developer holder and is formed into a uniform thin layer thereon by means of a constraining member, and in which a developing bias is applied to the developer holder to cause the developer to fly to an image area of an electrostatic latent image formed on a latent image carrier which is disposed in opposing relationship with the developer holder with a gap therebetween, comprising
A developer unit in which a non-magnetic single component developer is supplied to the surface of a developer holder and is formed into a uniform thin layer thereon by means of a constraining member, and in which a developing bias is applied to the developer holder to cause the developer to fly to an image area of an electrostatic latent image formed on a latent image carrier which is disposed in opposing relationship with the developer holder with a gap therebetween, comprising
A developer unit in which a non-magnetic single component developer is supplied to the surface of a developer holder and is formed into a uniform thin layer thereon by means of a constraining member, and in which a developing bias is applied to the developer holder to cause the developer to fly to an image area of an electrostatic latent image formed on a latent image carrier which is disposed in opposing relationship with the developer holder with a gap therebetween, comprising
A developer unit in which a non-magnetic single component developer is supplied to the surface of a developer holder and is formed into a uniform thin layer thereon by means of a constraining member, and in which a developing bias is applied to the developer holder to cause the developer to fly to an image area of an electrostatic latent image formed on a latent image carrier which is disposed in opposing relationship with the developer holder with a gap therebetween, comprising
Dependencies are inferred from the claim text.