US3717880A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual mode electrographic recorder
Assignee: Xerox Corp
•
Filing: 1970-10-29
•
Granted: 1973-02-20
•
Expires: 1990-10-29
Abstract
Abstract Dual mode electrographic recording apparatus comprising a slow speed input generated by a typewriter keyboard and a high speed input via a computer. The recording apparatus of the present invention is characterized by the provision of a developer structure having two modes of operation during one of which developer material is applied to the recording medium along a recording zone traversed by the slow speed recorder and during a second mode of operation adjacent a second recording zone occupied by a stationary high speed recording structure.
Inventors
- 👤 R Howell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:40
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/06; G03G15/08; G03G15/0805; Y; Y10; Y10S; Y10S101/00; Y10S101/37
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
266 words
A DUAL MODE ELECTROGRAPHIC RECORDING APPARATUS COMPRISING: a low speed recording zone having an elongated dimension; a movable array of conductive styli positioned at said low speed recording zone; styli control means for selectively incrementing said movable array through said low speed recording zone in the direction of said elongated dimension; a high speed recording zone having an elongated dimension substantially parallel to said elongated dimension of said low speed recording zone; a fixed array of conductive styli positioned in said high speed recording zone substantially parallel to the elongated dimension thereof; motive means for moving a recording medium through said high speed and low speed recording zones in that order; logic means responsive to either a low speed or high speed recording mode for pulsing said movable or fixed arrays, respectively, whereby latent electrostatic charge patterns are placed on said recording medium representative of information to be recorded; first developing applicator means positioned adjacent said low speed recording zone and having a developing surface; means for selectively moving said developing surface into developing relationship with said recording medium at said low speed recording zone during the low speed recording mode; a second developing applicator means having a developing periphery and positioned adjacent said high speed recording zone; means for moving said periphery in developing relationship with said recording medium during said high speed recording mode, said last recited means being adapted for moving said developing surface in developing relationship with said recording medium and in contact with said periphery during said low speed recordinG mode, means for supplying developing material to said second applicator means.
Claim 2
Dependent Claim
266 words
A DUAL MODE ELECTROGRAPHIC RECORDING APPARATUS COMPRISING: a low speed recording zone having an elongated dimension; a movable array of conductive styli positioned at said low speed recording zone; styli control means for selectively incrementing said movable array through said low speed recording zone in the direction of said elongated dimension; a high speed recording zone having an elongated dimension substantially parallel to said elongated dimension of said low speed recording zone; a fixed array of conductive styli positioned in said high speed recording zone substantially parallel to the elongated dimension thereof; motive means for moving a recording medium through said high speed and low speed recording zones in that order; logic means responsive to either a low speed or high speed recording mode for pulsing said movable or fixed arrays, respectively, whereby latent electrostatic charge patterns are placed on said recording medium representative of information to be recorded; first developing applicator means positioned adjacent said low speed recording zone and having a developing surface; means for selectively moving said developing surface into developing relationship with said recording medium at said low speed recording zone during the low speed recording mode; a second developing applicator means having a developing periphery and positioned adjacent said high speed recording zone; means for moving said periphery in developing relationship with said recording medium during said high speed recording mode, said last recited means being adapted for moving said developing surface in developing relationship with said recording medium and in contact with said periphery during said low speed recordinG mode, means for supplying developing material to said second applicator means.
Claim 3
Dependent Claim
266 words
A DUAL MODE ELECTROGRAPHIC RECORDING APPARATUS COMPRISING: a low speed recording zone having an elongated dimension; a movable array of conductive styli positioned at said low speed recording zone; styli control means for selectively incrementing said movable array through said low speed recording zone in the direction of said elongated dimension; a high speed recording zone having an elongated dimension substantially parallel to said elongated dimension of said low speed recording zone; a fixed array of conductive styli positioned in said high speed recording zone substantially parallel to the elongated dimension thereof; motive means for moving a recording medium through said high speed and low speed recording zones in that order; logic means responsive to either a low speed or high speed recording mode for pulsing said movable or fixed arrays, respectively, whereby latent electrostatic charge patterns are placed on said recording medium representative of information to be recorded; first developing applicator means positioned adjacent said low speed recording zone and having a developing surface; means for selectively moving said developing surface into developing relationship with said recording medium at said low speed recording zone during the low speed recording mode; a second developing applicator means having a developing periphery and positioned adjacent said high speed recording zone; means for moving said periphery in developing relationship with said recording medium during said high speed recording mode, said last recited means being adapted for moving said developing surface in developing relationship with said recording medium and in contact with said periphery during said low speed recordinG mode, means for supplying developing material to said second applicator means.
Claim 4
Dependent Claim
266 words
A DUAL MODE ELECTROGRAPHIC RECORDING APPARATUS COMPRISING: a low speed recording zone having an elongated dimension; a movable array of conductive styli positioned at said low speed recording zone; styli control means for selectively incrementing said movable array through said low speed recording zone in the direction of said elongated dimension; a high speed recording zone having an elongated dimension substantially parallel to said elongated dimension of said low speed recording zone; a fixed array of conductive styli positioned in said high speed recording zone substantially parallel to the elongated dimension thereof; motive means for moving a recording medium through said high speed and low speed recording zones in that order; logic means responsive to either a low speed or high speed recording mode for pulsing said movable or fixed arrays, respectively, whereby latent electrostatic charge patterns are placed on said recording medium representative of information to be recorded; first developing applicator means positioned adjacent said low speed recording zone and having a developing surface; means for selectively moving said developing surface into developing relationship with said recording medium at said low speed recording zone during the low speed recording mode; a second developing applicator means having a developing periphery and positioned adjacent said high speed recording zone; means for moving said periphery in developing relationship with said recording medium during said high speed recording mode, said last recited means being adapted for moving said developing surface in developing relationship with said recording medium and in contact with said periphery during said low speed recordinG mode, means for supplying developing material to said second applicator means.
Claim 5
Dependent Claim
47 words
Recording apparatus according to claim 1 wherein, said means for moving said periphery in developing relationship with said recording medium comprises drive means for effecting continuous movement of said second developing applicator during said high speed recording mode and intermittent movement during said low speed recording mode.
Claim 6
Dependent Claim
187 words
Dual mode recording apparatus comprising: a low speed recording zone having an elongated dimension; first alphanumeric character generating means positioned adjacent said low speed recording zone; control means for said first alphanumeric character generating means for effecting character generation in said low speed recording zone in the direction of said elongated dimension; a high speed recording zone having an elongated dimension substantially parallel to and spaced apart from said low speed recording zone; second alphanumeric character generating means positioned adjacent said high speed recording zone for effecting character generation in said high speed recording zone; motive means for moving recording media through said recording zones; means for energizing said first character generating means during a low speed recording mode and said second character generating means during a high speed mode of operation; means for applying developer material to said recording media; and means for rendering said developer applying means operable in the first mode of operation for rendering visible latent images recorded at said low speed recording zone and in a second mode of operation for rendering visible latent images recorded in said high speed recording zone.
Claim 7
Dependent Claim
187 words
Dual mode recording apparatus comprising: a low speed recording zone having an elongated dimension; first alphanumeric character generating means positioned adjacent said low speed recording zone; control means for said first alphanumeric character generating means for effecting character generation in said low speed recording zone in the direction of said elongated dimension; a high speed recording zone having an elongated dimension substantially parallel to and spaced apart from said low speed recording zone; second alphanumeric character generating means positioned adjacent said high speed recording zone for effecting character generation in said high speed recording zone; motive means for moving recording media through said recording zones; means for energizing said first character generating means during a low speed recording mode and said second character generating means during a high speed mode of operation; means for applying developer material to said recording media; and means for rendering said developer applying means operable in the first mode of operation for rendering visible latent images recorded at said low speed recording zone and in a second mode of operation for rendering visible latent images recorded in said high speed recording zone.
Claim 8
Dependent Claim
56 words
Apparatus according to claim 3 wherein, said first alphanumeric character generating means adjacent said low speed recording zone comprises a movable array of conductive styli; and said means for energizing said second character generator comprises control means for selectively incrementing said movable array through said low speed recording zone in the direction of said elongated dimension.
Claim 9
Dependent Claim
113 words
Apparatus according to claim 3 wherein, said means for applying developer material to said recording medium comprises: a first developing applicator member having a developing surface positioned adjacent said low speed recording zone; means for selectively moving said developing surface in developing relationship with said recording medium during the low speed recording mode; a second developing applicator member having a developing periphery positioned adjacent said high speed recording zone; means for moving said periphery in developing relationship with said recording medium during a high speed recording mode, said developing surface being moved in contact with said periphery during a low speed recording mode; and means for applying developing material to said second applicator.
Claim 10
Dependent Claim
47 words
Recording apparatus according to claim 5 wherein, said means for moving said periphery in developing relationship with said recording medium comprises drive means for effecting continuous movement of said second developing applicator during said high speed recording mode and intermittent movement during said low speed recording mode.
Claim 11
Dependent Claim
114 words
Apparatus for rendering visible latent electrostatic images on a charge-retentive recording surface, said apparatus comprising: APPLICATOR MEANS FOR PRESENTING ELECTROSCOPIC MARKING PARTICLES TO SAID RECORDING SURFACE, SAID APPLICATOR MEANS INCLUDING A PAIR OF DISTINCT MEMBERS: MEANS RENDERING SAID APPLICATOR MEANS OPERABLE DURING A FIRST MODE OF OPERATION TO EFFECT APPLICATION OF SAID ELECTROSCOPIC MARKING PARTICLES TO SAID RECORDING SURFACE AT A FIRST RECORDING ZONE: AND MEANS FOR RENDERING SAID APPLICATOR MEANS OPERABLE DURING A SECOND MODE OF OPERATION TO EFFECT APPLICATION OF SAID ELECTROSCOPIC MARKING PARTICLES TO SAID RECORDING SURFACE ADJACENT A SECOND RECORDING ZONE, THE RELATIVE MOVEMENT BETWEEN SAID CHARGE-retentive surface and said applicator means being the same regardless of mode of operation.
Claim 12
Dependent Claim
114 words
Apparatus for rendering visible latent electrostatic images on a charge-retentive recording surface, said apparatus comprising: APPLICATOR MEANS FOR PRESENTING ELECTROSCOPIC MARKING PARTICLES TO SAID RECORDING SURFACE, SAID APPLICATOR MEANS INCLUDING A PAIR OF DISTINCT MEMBERS: MEANS RENDERING SAID APPLICATOR MEANS OPERABLE DURING A FIRST MODE OF OPERATION TO EFFECT APPLICATION OF SAID ELECTROSCOPIC MARKING PARTICLES TO SAID RECORDING SURFACE AT A FIRST RECORDING ZONE: AND MEANS FOR RENDERING SAID APPLICATOR MEANS OPERABLE DURING A SECOND MODE OF OPERATION TO EFFECT APPLICATION OF SAID ELECTROSCOPIC MARKING PARTICLES TO SAID RECORDING SURFACE ADJACENT A SECOND RECORDING ZONE, THE RELATIVE MOVEMENT BETWEEN SAID CHARGE-retentive surface and said applicator means being the same regardless of mode of operation.
Claim 13
Dependent Claim
113 words
Apparatus for rendering visible latent electrostatic images on a charge-retentive recording surface, said apparatus comprising: applicator means for presenting electroscopic marking particules to said recording surface, said applicator means including a pair of distinct members; means rendering said applicator means operable during a first mode of operation to effect application of said electroscopic marking particules to said recording surfaces ata first recording zone; and means for rendering said applicator means operable during a second mode of operation to effect application of said electroscopic marking particles to said recording surfaces adjacent a second recording zone, the relative movement between said charge-retentive surface and said applicator means being the same regardless of mode of operation.
Claim 14
Dependent Claim
113 words
Apparatus for rendering visible latent electrostatic images on a charge-retentive recording surface, said apparatus comprising: applicator means for presenting electroscopic marking particules to said recording surface, said applicator means including a pair of distinct members; means rendering said applicator means operable during a first mode of operation to effect application of said electroscopic marking particules to said recording surfaces ata first recording zone; and means for rendering said applicator means operable during a second mode of operation to effect application of said electroscopic marking particles to said recording surfaces adjacent a second recording zone, the relative movement between said charge-retentive surface and said applicator means being the same regardless of mode of operation.
Claim 15
Dependent Claim
82 words
Apparatus according to claim 7 wherein, said applicator means comprises a first rotatable member and means for continuously rotating said member during one of said modes of operation and intermittently rotating said rotatable member in the other of said modes of operation; said applicatormeans further comprising a second rotatable member and means for driving said member in developing relationship with said charge-retentive surface during saidother of said modes of operation and operative to discontinue movement thereof in said one mode of operation.
Claim 16
Dependent Claim
84 words
Apparatus according to claim 7 wherein, said applicator means comprises a first rotatable member and means for continuously rotating said member during one of said modes of operation and intermittently rotating said rotatable member in the other of said modes of operation; said applicator means further comprising a second rotatable member and means for moving said member in developing relationship with said charge-retentive surface during said other of said modes of operation and operative to discontinue movement thereof in said one mode of operation.
Claim 17
Dependent Claim
210 words
A dual mode electrographic apparatus comprising: a linear array of conductive styli; an elongated backing electrode defining a first recording station; means for selectively inCrementing said linear array of styli through said first recording zone and opposite said backing electrode during a first recording mode; first developer applicator means having an arcuate surface capable of retaining electroscopic marking particles for bringing said particles to said first recording zone, said applicator being selectively rotatable about an axis substantially parallel to said first recording zone; a fixed linear array of conductive styli positioned opposite said backing electrode and substantially coextensive therewith; means for moving a web of insulative recording medium first between said fixed array of styli and said elongated backing electrode and secondly between said elongated backing electrode and said incrementally movable array of styli; and second evelopment applicator means positioned along the path of the web between the first and second recording zones having a surface capable of retaining electroscopic marking particles and rotatable about an axis parallel to the axis of said first developing applicator means for bringing electroscopic marking particles into contact with only said web in one recording mode and into contact with the surface of said first applicator means and said web in a second recordingmode.
Claim 18
Dependent Claim
210 words
A dual mode electrographic apparatus comprising: a linear array of conductive styli; an elongated backing electrode defining a first recording station; means for selectively inCrementing said linear array of styli through said first recording zone and opposite said backing electrode during a first recording mode; first developer applicator means having an arcuate surface capable of retaining electroscopic marking particles for bringing said particles to said first recording zone, said applicator being selectively rotatable about an axis substantially parallel to said first recording zone; a fixed linear array of conductive styli positioned opposite said backing electrode and substantially coextensive therewith; means for moving a web of insulative recording medium first between said fixed array of styli and said elongated backing electrode and secondly between said elongated backing electrode and said incrementally movable array of styli; and second evelopment applicator means positioned along the path of the web between the first and second recording zones having a surface capable of retaining electroscopic marking particles and rotatable about an axis parallel to the axis of said first developing applicator means for bringing electroscopic marking particles into contact with only said web in one recording mode and into contact with the surface of said first applicator means and said web in a second recordingmode.
Claim 19
Dependent Claim
211 words
A DUAL MODE ELECTROGRAPHIC APPARATUS COMPRISING: a linear array of conductive styli; an elongated backing electrode defining a first recording station; means for selectively incrementing said linear array of styli through said first recording zone and opposite said backing electrode during a first recording mode; first developer applicator means having an arcuate surface capable of retaining electroscopic marking particles for bringing said particles to said first recording zone, said applicator being selectively rotatable about an axis substantially parallel to said first recording zone; a fixed linear array of conductive styli positioned opposite said backing electrode and substantially coextensive therewith; means for moving a web of insulative recording medium first between said fixed array of styli and said elongated backing electrode and secondly between said elongated backing electrode and said incrementally movable array of styli; and second development applicator meanw positioned along the path of the web between the first and second recording zones having a surface capable of retaining electroscopic marking particles and rotatable about an axis parallel to the axis of said first developing applicator means for bringing electroscopic marking particles into contact with only said web in one recording mode and into contact with the surface of said first applicator means and said web in a second recording mode.
Claim 20
Dependent Claim
211 words
A DUAL MODE ELECTROGRAPHIC APPARATUS COMPRISING: a linear array of conductive styli; an elongated backing electrode defining a first recording station; means for selectively incrementing said linear array of styli through said first recording zone and opposite said backing electrode during a first recording mode; first developer applicator means having an arcuate surface capable of retaining electroscopic marking particles for bringing said particles to said first recording zone, said applicator being selectively rotatable about an axis substantially parallel to said first recording zone; a fixed linear array of conductive styli positioned opposite said backing electrode and substantially coextensive therewith; means for moving a web of insulative recording medium first between said fixed array of styli and said elongated backing electrode and secondly between said elongated backing electrode and said incrementally movable array of styli; and second development applicator meanw positioned along the path of the web between the first and second recording zones having a surface capable of retaining electroscopic marking particles and rotatable about an axis parallel to the axis of said first developing applicator means for bringing electroscopic marking particles into contact with only said web in one recording mode and into contact with the surface of said first applicator means and said web in a second recording mode.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-20 | 1976-08-21 | 1977-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-20 | 1980-08-21 | 1981-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-20 | 1984-08-21 | 1985-02-20 | $7700.00 | Window Closed / Lapsed |