US4305653A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scanning diagnostics
Assignee: Xerox Corp
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Filing: 1979-10-02
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Granted: 1981-12-15
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Expires: 1999-10-02
Abstract
Abstract The time periods between energization of an optics clutch and activation of a scan switch at the end of scan position and between de-energization of the optics clutch and actuation of the scan switch at the home position are provided. Representations of the time periods are continuously displayed during a copy run. The last timing periods of a copy run are temporarily stored until the next copy run. Upon entering a diagnostic mode, the machine will produce a copy in the normal manner and display a number corresponding to the forward scan and return scan or flyback time periods. Through suitable conversion, the scan time in milliseconds can be provided.
Inventors
- 👤 Eugene S. Evanitsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:26
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/22; G03G15/28; G03B; G03B27/00; G03B27/32; G03B27/52; G03B27/522; G03B27/525; G03B27/526
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
95 words
In a reproduction machine having a scanning optics system, a diagnostic method comprising the steps of providing a signal at the start of scan of the scanning optics system in the forward direction activating a switch at the end of scan, the switch providing an end of scan signal, providing end of scan and beginning of scan signals, for scanning of the scanning optics system in the reverse direction, storing signals representing the scan time in the forward and reverse direction, and displaying the representations of the scan time in the forward and reverse directions.
Claim 2
Dependent Claim
95 words
In a reproduction machine having a scanning optics system, a diagnostic method comprising the steps of providing a signal at the start of scan of the scanning optics system in the forward direction activating a switch at the end of scan, the switch providing an end of scan signal, providing end of scan and beginning of scan signals, for scanning of the scanning optics system in the reverse direction, storing signals representing the scan time in the forward and reverse direction, and displaying the representations of the scan time in the forward and reverse directions.
Claim 3
Dependent Claim
18 words
The method of claim 1 including the step of converting the stored signals of scan time into milliseconds.
Claim 4
Dependent Claim
24 words
The method of claim 1 wherein the step of providing a start of scan signal includes the step of enabling a scan drive clutch.
Claim 5
Dependent Claim
26 words
The method of claim 1 including the step of entering a diagnostic mode to display a number corresponding to forward scan or reverse scan time periods.
Claim 6
Dependent Claim
18 words
The method of claim 4 including the step of repeating the scan time periods for each subsequent scan.
Claim 7
Dependent Claim
64 words
A reproduction machine having a plurality of components and a photoreceptor cooperable with one another to produce impressions on support material and including a scanning optics system comprising a scanning carriage for scanning a document to be reproduced, a signal provided at the beginning of scan, a signal provided at the end of scan, and means to continuously display signals representing diagnostic scanning information.
Claim 8
Dependent Claim
64 words
A reproduction machine having a plurality of components and a photoreceptor cooperable with one another to produce impressions on support material and including a scanning optics system comprising a scanning carriage for scanning a document to be reproduced, a signal provided at the beginning of scan, a signal provided at the end of scan, and means to continuously display signals representing diagnostic scanning information.
Claim 9
Dependent Claim
24 words
The machine of claim 6 wherein a switch is located on the scanning carriage and activated by a ramp at the end of scan.
Claim 10
Dependent Claim
29 words
The machine of claim 6 including means to enter a diagnostic mode to display a number representative of the time period between beginning of scan and end of scan.
Claim 11
Dependent Claim
13 words
The machine of claim 8 including a display panel to display said number.
Claim 12
Dependent Claim
24 words
The machine of claim 6 including a switch mounted on the scanning carriage and a ramp secured to the machine to activate the switch.
Claim 13
Dependent Claim
13 words
The machine of claim 6 including the means to repeat said display signals.
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) | 1984-12-14 | 1985-06-15 | 1985-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-12-14 | 1989-06-15 | 1989-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-12-14 | 1993-06-15 | 1993-12-15 | $7700.00 | Window Closed / Lapsed |