Patent US5127643A successfully refreshed from Google Patents.
US5127643A
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US
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Automatic copy sheet selection device
Assignee: Xerox Corp
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Filing: 1991-10-16
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Granted: 1992-07-07
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Expires: 2011-10-16
Abstract
Abstract An automatic copy paper selecting device that chooses the proper type of copy sheet based on the paper weight of the sheets of the original document without the necessity of utilizing coded control sheets or other operator input. A paper weight sensor in the document handler determines the weight of each original sheet and sends a signal to a programmable controller which then selects the proper copy sheet feed tray based on preprogrammed parameters.
Inventors
- 👤 Anthony T. DeSanctis
- 👤 Barry P. Mandel
- 👤 Francesca A. Barrientos
- 👤 Richard A. VanDongen
- 👤 David R. Kamprath
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:09
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/50; B; B65; B65H; B65H7/00; B65H7/02; G03G15/60; B65H2511/00; B65H2511/50; B65H2511/51; B65H2511/515; B65H2515/00; B65H2515/10; B65H2553/00; B65H2553/40; B65H2553/41; B65H2557/00; B65H2557/50; G03G2215/00; G03G2215/00172; G03G2215/00206; G03G2215/0021; G03G2215/00219; G03G2215/00244; G03G2215/00253; Y; Y10; Y10S; Y10S177/00; Y10S177/06
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
49 words
An apparatus for automatically selecting a copy sheet as a function of the weight of an original sheet, comprising: means for detecting the weight of the original sheet and generating a signal proportional thereto; and means, responsive to the generated signal from said detecting means, for selecting a sheet.
Claim 2
Independent Claim
49 words
An apparatus for automatically selecting a copy sheet as a function of the weight of an original sheet, comprising: means for detecting the weight of the original sheet and generating a signal proportional thereto; and means, responsive to the generated signal from said detecting means, for selecting a sheet.
Claim 3
Dependent Claim
34 words
An apparatus as described in claim 1 wherein said detecting means comprises: an infrared emitter; and a phototransistor receptor being positioned to receive energy transmitted through said original copy sheet from said infrared emitter.
Claim 4
Dependent Claim
35 words
An apparatus as described in claim 2 wherein said selecting means comprises a programmable controller, which selects the copy sheet as a function of the output signal from said phototransistor receptor and a pre-selected reference.
Claim 5
Dependent Claim
40 words
An apparatus as described in claim 3, further comprising means for advancing the original sheet along a pre-selected path of travel with said phototransistor receptor and said infrared emitter being opposed from one another with the original sheet passing therebetween.
Claim 6
Dependent Claim
19 words
An apparatus according to claim 1, wherein said detecting means indicates the absence or presence of the original sheet.
Claim 7
Dependent Claim
20 words
A printing machine according to claim 1, wherein said detecting means indicates the absence or presence of the original sheet.
Claim 8
Dependent Claim
58 words
An electrophotographic printing machine of the type in which a copy sheet is selected as a function of the weight of an original document, wherein the improvement comprises: means for detecting the weight of the original sheet and generating a signal proportional thereto; and means responsive to the generated signal from said detecting means for selecting a sheet.
Claim 9
Dependent Claim
58 words
An electrophotographic printing machine of the type in which a copy sheet is selected as a function of the weight of an original document, wherein the improvement comprises: means for detecting the weight of the original sheet and generating a signal proportional thereto; and means responsive to the generated signal from said detecting means for selecting a sheet.
Claim 10
Dependent Claim
35 words
A printing machine as described in claim 7 wherein said detecting means comprises: an infrared emitter; and a phototransistor receptor being positioned to receive energy transmitted through said original copy sheet from said infrared emitter.
Claim 11
Dependent Claim
36 words
A printing machine as described in claim 8 wherein said selecting means comprises a programmable controller, which selects the copy sheet as a function of the output signal from said phototransistor receptor and a pre-selected reference.
Claim 12
Dependent Claim
41 words
A printing machine as described in claim 9, further comprising means for advancing the original sheet along a pre-selected path of travel with said phototransistor receptor and said infrared emitter being opposed from one another with the original sheet passing therebetween.
References Cited (Backward Citations)
US4248528A
Cited
US4388008A
Cited
US4609283A
Cited
US4920384A
Cited
JPS62161647A
Cited
US4804997A
Cited
US4937592A
Cited
JPS6482634A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-07-07 | 1996-01-06 | 1996-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-07-07 | 2000-01-06 | 2000-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-07-07 | 2004-01-06 | 2004-07-07 | $7700.00 | Window Closed / Lapsed |