Patent US5899953A successfully refreshed from Google Patents.
US3865480A
Expired / Lapsed
US
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Electrostatic control of fan fold paper stacking
Assignee: Xerox Corp
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Filing: 1973-12-20
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Granted: 1975-02-11
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Expires: 1993-12-20
Abstract
Abstract Apparatus for producing compact stacking of fan fold paper by creating electrostatic attraction forces between facing sheets of the fan fold. The attraction forces can be provided by charging, such as with a corona generator, alternate sheets of the fan fold such that they have an electrostatic charge greater than any residual or ambient charge on the adjacent sheets. More compact stacking is achieved by charging every sheet with the charge on each sheet having a polarity opposite to the polarity of the charge on each of the two adjacent sheets.
Inventors
- 👤 Melvin E Swanberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:09
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/65; G03G15/6517; G03G15/6526; B; B65; B65H; B65H45/00; B65H45/02; B65H45/06; B65H45/10; B65H45/101; B65H45/1015; G01; G01D; G01D15/00; G01D15/28; G01D15/30; G03G2215/00; G03G2215/00362; G03G2215/00367; G03G2215/00417; G03G2215/00421; G03G2215/00443; G03G2215/00451; G03G2215/00455; G03G2215/00459; G03G2215/00535; G03G2215/00654
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
59 words
In an apparatus for processing a fan fold paper stack in which at least a portion of said fan fold paper stack is imaged by an imaging apparatus and then stacked in a receptacle, the improvement comprising: means, disposed between said imaging apparatus and said receptacle, for charging selected sheets of said portion of said fan fold paper stack.
Claim 2
Dependent Claim
59 words
In an apparatus for processing a fan fold paper stack in which at least a portion of said fan fold paper stack is imaged by an imaging apparatus and then stacked in a receptacle, the improvement comprising: means, disposed between said imaging apparatus and said receptacle, for charging selected sheets of said portion of said fan fold paper stack.
Claim 3
Dependent Claim
20 words
The apparatus of claim 1 in which said means charges alternate sheets of said portion of said fan fold paper.
Claim 4
Dependent Claim
41 words
The apparatus of claim 1 in which said means charges alternate sheets of said fan fold to one polarity, and said apparatus includes additional means for charging the sheets of said fan fold intermediate said alternate sheets to the other polarity.
Claim 5
Dependent Claim
60 words
In an apparatus for processing a fan fold paper stack in which at least a portion of the paper stack comes in contact with a printing member and is then stacked in a stacking bin, the improvement comprising: means, disposed between said printing member and said bin, for charging selected sheets of said portion of said fan fold paper stack.
Claim 6
Dependent Claim
60 words
In an apparatus for processing a fan fold paper stack in which at least a portion of the paper stack comes in contact with a printing member and is then stacked in a stacking bin, the improvement comprising: means, disposed between said printing member and said bin, for charging selected sheets of said portion of said fan fold paper stack.
Claim 7
Dependent Claim
19 words
The apparatus of claim 4 in which said means charges alternate sheets of said portion of said fan fold.
Claim 8
Dependent Claim
43 words
The apparatus of claim 4 in which said means charges alternate sheets of said fan fold to a first polarity, and said apparatus further includes additional means for charging the sheets of said fan fold intermediate said alternate sheets to a second polarity.
Claim 9
Dependent Claim
79 words
In an apparatus for processing a fan fold paper stack, in which at least a portion of said fan fold paper stack is imaged by an imaging apparatus and then stacked in a receptacle, the improvement comprising: means, disposed between said imaging apparatus and said receptacle, for charging selected sheets of said portion of said fan fold with charges of one polarity and other selected sheets of said portion of said fan fold with charges of the opposite polarity.
Claim 10
Dependent Claim
79 words
In an apparatus for processing a fan fold paper stack, in which at least a portion of said fan fold paper stack is imaged by an imaging apparatus and then stacked in a receptacle, the improvement comprising: means, disposed between said imaging apparatus and said receptacle, for charging selected sheets of said portion of said fan fold with charges of one polarity and other selected sheets of said portion of said fan fold with charges of the opposite polarity.
Claim 11
Dependent Claim
39 words
The apparatus of claim 7 in which alternate sheets of said portion of said fan fold are charged to said one polarity and the sheets of said fan fold intermediate said alternate sheets are charged to said opposite polarity.
Claim 12
Independent Claim
60 words
The method of providing flat stacking of processed fan fold paper in a stacking bin subsequent to complete imaging of at least areas of the fan fold paper comprising the step of: charging selected sheets of at least a portion of said fan fold paper prior to stacking of said portion of said fan fold paper in said stacking bin.
Claim 13
Independent Claim
60 words
The method of providing flat stacking of processed fan fold paper in a stacking bin subsequent to complete imaging of at least areas of the fan fold paper comprising the step of: charging selected sheets of at least a portion of said fan fold paper prior to stacking of said portion of said fan fold paper in said stacking bin.
Claim 14
Independent Claim
47 words
A method of providing flat stacking of processed fan fold paper in a stacking bin comprising the step of: charging selected sheets of said fan fold with a charge of one polarity and other selected sheets of said fan fold with a charge of the opposite polarity.
Claim 15
Independent Claim
47 words
A method of providing flat stacking of processed fan fold paper in a stacking bin comprising the step of: charging selected sheets of said fan fold with a charge of one polarity and other selected sheets of said fan fold with a charge of the opposite polarity.
Claim 16
Independent Claim
57 words
The method of providing flat stacking of processed fan fold paper in a stacking bin comprising the steps of: a. charging alternate sheets of said fan fold with a charge of one polarity, and b. charging the sheets of said fan fold intermediate said alternate sheets with a charge of the polarity opposite to said one polarity.
Claim 17
Independent Claim
57 words
The method of providing flat stacking of processed fan fold paper in a stacking bin comprising the steps of: a. charging alternate sheets of said fan fold with a charge of one polarity, and b. charging the sheets of said fan fold intermediate said alternate sheets with a charge of the polarity opposite to said one polarity.
Claim 18
Dependent Claim
64 words
In a xerographic apparatus for providing an image on a stack of fan fold paper by transferring the image on a photoconductive surface to said fan fold paper and then stacking the fan fold paper in a stacking bin, the improvement comprising: means disposed between said photoconductive surface and said stacking bin for charging selected sheets of said portion of said fan fold paper.
Claim 19
Dependent Claim
64 words
In a xerographic apparatus for providing an image on a stack of fan fold paper by transferring the image on a photoconductive surface to said fan fold paper and then stacking the fan fold paper in a stacking bin, the improvement comprising: means disposed between said photoconductive surface and said stacking bin for charging selected sheets of said portion of said fan fold paper.
Claim 20
Dependent Claim
19 words
The apparatus of claim 12 in which said means charges alternate sheets of said portion of said fan fold.
Claim 21
Dependent Claim
37 words
The apparatus of claim 12 in which said means charges to a First polarity alternate sheets of said fan fold and charges to a second polarity the sheets of said fan fold intermediate to said alternate sheets.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-10 | 1978-08-12 | 1979-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-10 | 1982-08-12 | 1983-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-10 | 1986-08-12 | 1987-02-11 | $7700.00 | Window Closed / Lapsed |