US3348522A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic toner control system
Assignee: Xerox Corp
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Filing: 1965-04-07
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Granted: 1967-10-24
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Expires: 1985-04-07
Abstract
No abstract record available.
Inventors
- 👤 James M Donohue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:34
CPC Classifications
C; C07; C07D; C07D241/00; C07D241/02; C07D241/10; C07D241/14; C07D241/16; C07D213/00; C07D213/02; C07D213/04; C07D213/60; C07D213/61; G; G03; G03G; G03G15/00; G03G15/06; G03G15/08; G03G15/0822; G03G15/0848; G03G15/0849; G03G15/0855; G03G15/50; G03G15/5033; G03G15/5041
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
180 words
A TONER DISPENSING DEVICE AND CONTROL CIRCUIT THEREFOR FOR USE IN AN ELECTROSTATIC REPRODUCTION APPARATUS HAVING AN ELECTROSTATIC REPRODUCING PLATE AND A DEVELOPER MECHANISM ADAPTED TO APPLY DEVELOPER MATERIAL TO EXPOSED IMAGES ON THE PLATE THEREBY PRODUCING POWDERED IMAGES THEREON INCLUDING: A CONTAINER FOR THE TONER, MEANS FOR DISPENSING TONER FROM THE CONTAINER INTO THE DEVELOPER MECHANISM FOR REPLENISHING THE DEVELOPING MATERIAL WITH TONER, AN ACTUATOR DEVICE ASSOCIATED WITH THE SAID DISPENSING MEANS FOR CONTROLLING THE INTRODUCTION OF THE TONER INTO THE DEVELOPER MECHANISM, MEANS FOR PRODUCING ON A PORTION OF THE ELECTROSTATIC REPRODUCING PLATE REMOTE FROM THE EXPOSED IMAGE TO BE REPRODUCED AN ELECTROSTATIC IMAGE FOR DEVELOPMENT BY THE DEVELOPER MECHANISM, A LIGHT SOURCE ARRANGED FOR ILLUMINATING THE DEVELOPED IMAGE, A LIGHT SENSITIVE DEVICE ARRANGED TO RECEIVE THE LIGHT RAYS FROM SAID IMAGE AND TO PRODUCE AN OUTPUT IN ACCORDANCE THEREWITH, MEANS FOR COMPARING SAID OUTPUT WITH A PRESET OUTPUT AND PRODUCING A DIFFERENTIAL SIGNAL, AND MEANS RESPONSIVE TO SAID DIFFERENTIAL SIGNAL AND ASSOCIATED WITH SAID DISPENSING MEANS FOR ACTUATING THE SAME TO DISPENSE TONER INTO THE DEVELOPER MECHANISM.
Claim 2
Dependent Claim
180 words
A TONER DISPENSING DEVICE AND CONTROL CIRCUIT THEREFOR FOR USE IN AN ELECTROSTATIC REPRODUCTION APPARATUS HAVING AN ELECTROSTATIC REPRODUCING PLATE AND A DEVELOPER MECHANISM ADAPTED TO APPLY DEVELOPER MATERIAL TO EXPOSED IMAGES ON THE PLATE THEREBY PRODUCING POWDERED IMAGES THEREON INCLUDING: A CONTAINER FOR THE TONER, MEANS FOR DISPENSING TONER FROM THE CONTAINER INTO THE DEVELOPER MECHANISM FOR REPLENISHING THE DEVELOPING MATERIAL WITH TONER, AN ACTUATOR DEVICE ASSOCIATED WITH THE SAID DISPENSING MEANS FOR CONTROLLING THE INTRODUCTION OF THE TONER INTO THE DEVELOPER MECHANISM, MEANS FOR PRODUCING ON A PORTION OF THE ELECTROSTATIC REPRODUCING PLATE REMOTE FROM THE EXPOSED IMAGE TO BE REPRODUCED AN ELECTROSTATIC IMAGE FOR DEVELOPMENT BY THE DEVELOPER MECHANISM, A LIGHT SOURCE ARRANGED FOR ILLUMINATING THE DEVELOPED IMAGE, A LIGHT SENSITIVE DEVICE ARRANGED TO RECEIVE THE LIGHT RAYS FROM SAID IMAGE AND TO PRODUCE AN OUTPUT IN ACCORDANCE THEREWITH, MEANS FOR COMPARING SAID OUTPUT WITH A PRESET OUTPUT AND PRODUCING A DIFFERENTIAL SIGNAL, AND MEANS RESPONSIVE TO SAID DIFFERENTIAL SIGNAL AND ASSOCIATED WITH SAID DISPENSING MEANS FOR ACTUATING THE SAME TO DISPENSE TONER INTO THE DEVELOPER MECHANISM.
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) | 1970-10-23 | 1971-04-24 | 1971-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-23 | 1975-04-24 | 1975-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-23 | 1979-04-24 | 1979-10-24 | $7700.00 | Window Closed / Lapsed |