Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
115 words
Electrophotographic apparatus for producing at least one copy from an original document and having the customary electrophotographic facilities for charging, imaging, transferring, precleaning, and erasing a photoconductor medium, said photoconductor medium comprising a movable member having an endless surface with an odd numbered plurality segments on said surface to accommodate a plurality of successive image areas thereon during operation of said apparatus, comprising: a combined developer-cleaner unit positioned for engagement with said photoconductor medium at a single station for developing an image in one mode and cleaning said photoconductor medium in another mode; and sequencing means for activating said developer-cleaner unit to alternately develop and clean successive image areas during rotation of said drum member.
Claim 2
Dependent Claim
115 words
Electrophotographic apparatus for producing at least one copy from an original document and having the customary electrophotographic facilities for charging, imaging, transferring, precleaning, and erasing a photoconductor medium, said photoconductor medium comprising a movable member having an endless surface with an odd numbered plurality segments on said surface to accommodate a plurality of successive image areas thereon during operation of said apparatus, comprising: a combined developer-cleaner unit positioned for engagement with said photoconductor medium at a single station for developing an image in one mode and cleaning said photoconductor medium in another mode; and sequencing means for activating said developer-cleaner unit to alternately develop and clean successive image areas during rotation of said drum member.
Claim 3
Dependent Claim
103 words
The apparatus of claim 1, wherein said photoconductor medium is in the form of a rotatable cylindrical drum member, and further comprising: means for rotating said drum member during successive cycles of operation of said apparatus to produce a multitude of copies; means to activate said developer-cleaner unit in a developer mode continuously during said successive cycles of operation of said apparatus and rotation of said drum member; and runout means operable upon termination of said successive cycles and production of a multitude of copies to activate said developer-cleaner unit to clean said photoconductor drum member in readiness for a succeeding multiple-copy run.
Claim 4
Dependent Claim
57 words
The apparatus of claim 1, wherein: said photoconductor medium is in the form of an endless belt member mounted for movement in a preferred direction to convey image areas past the various stations in said apparatus during operation; and means for activating said developer-cleaner unit to alternatively develop and clean successive image areas on said belt member.
Claim 5
Dependent Claim
93 words
The apparatus of claim 1 wherein said photoconductor medium is an endless belt member mounted for movement in a preferred direction during operation of said apparatus to convey successive image areas past the various stations in the course of producing copies, and further comprising: means for activating said developer-cleaner unit to develop each succeeding image on said photoconductor belt member during operation and the production of a multitude of copies; and means for activating said developer-cleaner unit to clean said photoconductor belt member upon termination of a run of said multitude of copies.
Claim 6
Dependent Claim
105 words
The apparatus of claim 1 wherein said developer-cleaner unit comprises a housing to accommodate a developer mixture including toner, and further comprising: a magnetic brush mounted within said housing and in contact with said photoconductor medium at a single station for conveying developer mixture onto said photoconductor medium in one mode for the purpose of developing images on said photoconductor medium and for applying developer mixture onto said photoconductor medium in a scavenging mode for the purpose of cleaning said photoconductor medium; and sequencing means for activating said developer-cleaner unit and said magnetic brush member in the appropriate mode required during operation of said apparatus.
Claim 7
Dependent Claim
108 words
The apparatus of claim 5, further comprising: means for producing positive and negative biasing potentials; means connecting said magnetic brush member to said potential producing means during operation of said apparatus; and means operable as successive image areas on said photoconductor on drum are processed for selectively applying one or the other of said potentials as a bias to said magnetic brush member to create the repulsion necessary to transmit developer mixture from said magnetic brush member to said photoconductor medium during a developing mode and to create the attraction relationship to scavenge developer mixture from said photoconductor medium to said magnetic brush member during a cleaning mode.