US3791729A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for monitoring a sheet transport mechanism
Assignee: Xerox Corp
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Filing: 1972-07-11
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Granted: 1974-02-12
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Expires: 1992-07-11
Abstract
Abstract Apparatus for monitoring a sheet transport mechanism included in an electrostatic reproduction machine is disclosed in accordance with the teachings of the present invention. The electrostatic reproduction machine includes a support surface adapted to support a developed image of a character pattern, which developed image is transferred to an image receiving medium that is placed in contact with the support surface at a transfer station. Subsequent to the transfer of the developed image to the image receiving medium, the image receiving medium is removed from the support surface and transported to further operating stations. Detecting means in operable communication with the support surface is adapted to detect the presence of an image receiving medium in contact with said support surface, thereby indicating a failure of said image receiving medium to be removed. Means responsive to the detected presence of the image receiving medium serves to regulate the further operation of the electrostatic reproduction machine accordingly.
Inventors
- 👤 E Steiner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 00:27
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/70; G03G15/706; Y; Y10; Y10S; Y10S271/00; Y10S271/90
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
171 words
In an electrostatic reproduction machine having a support surface adapted to support a developed image of a character pattern and to transfer said developed image to an image receiving medium in contact therewith at a transfer station, said electrostatic reproduction machine additionally having primary means to remove said image receiving medium from said support surface and to transport said image receiving medium from said transfer station subsequent to said transfer of said developed image thereto, apparatus for detecting when said image receiving medium has not been removed from said support surface subsequent to said transfer of said developed image, comprising: detecting means in operable communication with said support surface to detect the presence of said image receiving medium in contact with said support surface subsequent to said transfer of said developed image; secondary means, responsive to said detecting means to remove said image receiving medium from said support surface; and means responsive to said detected presence of said image receiving medium to regulate the further operation of said electrostatic reproduction machine.
Claim 2
Dependent Claim
171 words
In an electrostatic reproduction machine having a support surface adapted to support a developed image of a character pattern and to transfer said developed image to an image receiving medium in contact therewith at a transfer station, said electrostatic reproduction machine additionally having primary means to remove said image receiving medium from said support surface and to transport said image receiving medium from said transfer station subsequent to said transfer of said developed image thereto, apparatus for detecting when said image receiving medium has not been removed from said support surface subsequent to said transfer of said developed image, comprising: detecting means in operable communication with said support surface to detect the presence of said image receiving medium in contact with said support surface subsequent to said transfer of said developed image; secondary means, responsive to said detecting means to remove said image receiving medium from said support surface; and means responsive to said detected presence of said image receiving medium to regulate the further operation of said electrostatic reproduction machine.
Claim 3
Dependent Claim
90 words
The apparatus of claim 1 wherein said secondary means to remove said image receiving medium comprises: deflection means electrically coupled to said detecting means and responsive to a generated output signal for establishing a removal path and for deflecting said image receiving medium from said support surface to said removal path; and sensing means disposed in said removal path and responsive to said generated output signal for terminating the further operation of said electrostatic reproduction machine in accordane with the sensing of said image receiving medium in said removal path.
Claim 4
Dependent Claim
128 words
The apparatus of claim 2 wherein said sensing means comprises: switch means adapted to be activated by the contact therewith of said image receiving medium; timing means electrically coupled to said detecting means and to said switch means and responsive to said generated output signal for commencing the timing of a predetermined interval and to the activation of said switch means for interrupting said timing prior to the completion of said predetermined interval; and terminating means coupled to said switch means and to said timing means for the further operation of said electrostatic reproduction machine after a determined delay when said switch means is activated and for immediately terminating the further operation of said electrostatic reproduction machine when said timing means completes the timing of said predetermined interval.
Claim 5
Dependent Claim
43 words
The apparatus of claim 3 wherein said deflection means comprises rotatable solenoid means including guide means to be rotated into contact with said support surface for removing said image receiving medium and for guiding said removed image receiving medium to said removal path.
Claim 6
Dependent Claim
190 words
In an electrostatic reproduction machine having a support surface adapted to support a developed image of a character pattern and to transfer said developed image to an image receiving medium in contact therewith at a transfer station, said electrostatic reproduction machine having primary means to remove said image receiving medium from said support surface and to transport said image receiving medium from said transfer station subsequent to said transfer of said developed image thereto; apparatus for detEcting when said image receiving medium has not been removed from said support surface subsequent to said transfer of said developed image; comprising: detecting means in operable communication with said support surface to detect the presence of said image receiving medium in contact with said support surface subsequent to said transfer of said developed image; secondary means responsive to said detecting means to remove said image receiving medium from said support surface and deflect said image receiving medium from said support surface through a removal path; and sensing means disposed in said removal path to sense the presence of said image receiving medium therein to regulate the further operation of said electrostatic reproduction machine.
Claim 7
Dependent Claim
190 words
In an electrostatic reproduction machine having a support surface adapted to support a developed image of a character pattern and to transfer said developed image to an image receiving medium in contact therewith at a transfer station, said electrostatic reproduction machine having primary means to remove said image receiving medium from said support surface and to transport said image receiving medium from said transfer station subsequent to said transfer of said developed image thereto; apparatus for detEcting when said image receiving medium has not been removed from said support surface subsequent to said transfer of said developed image; comprising: detecting means in operable communication with said support surface to detect the presence of said image receiving medium in contact with said support surface subsequent to said transfer of said developed image; secondary means responsive to said detecting means to remove said image receiving medium from said support surface and deflect said image receiving medium from said support surface through a removal path; and sensing means disposed in said removal path to sense the presence of said image receiving medium therein to regulate the further operation of said electrostatic reproduction machine.
Claim 8
Dependent Claim
127 words
The apparatus of claim 5 wherein said sensing means comprises: switch means adapted to be activated by the contact therewith of said image receiving medium; timing means electrically coupled to said detecting means and to said switch means and responsive to said detecting means for commencing the timing of a predetermined interval and to the activation of said switch means for interrupting said timing prior to the completion of said predetermined interval; and terminating means coupled to said switch means and to said timing means for the further operation of said electrostatic reproduction machine after a determined delay when said switch means is activated and for immediately terminating the further operation of said electrostatic reproduction machine when said timing means completes the timing of said predetermined interval.
References Cited (Backward Citations)
US3360652A
Cited
US3578859A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-11 | 1977-08-13 | 1978-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-11 | 1981-08-13 | 1982-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-11 | 1985-08-13 | 1986-02-12 | $7700.00 | Window Closed / Lapsed |