US4072307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corner sheet stripper
Assignee: Xerox Corp
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Filing: 1977-03-25
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Granted: 1978-02-07
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Expires: 1997-03-25
Abstract
Abstract A sheet stripper for mechanically stripping copy sheets from the moving imaging surface of an edge registration type copier without contacting the actual imaging area of the imaging surface. The stripper has a bearing portion continuously riding only on an edge area of the imaging surface outside of the imaging area. An integral stripping finger is rigidly cantilevered from this bearing portion out over the imaging area into the path of one corner of the lead edge of copy sheets thereon. The stripping edge of this stripping finger is continuously maintained spaced above the imaging area, by less than the thickness of a single sheet, by the adjacent integral bearing portion riding on the closely adjacent area of the imaging surface.
Inventors
- 👤 James J. Knieser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:18
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/65; G03G15/6532; B; B65; B65H; B65H29/00; B65H29/54; B65H29/56; Y; Y10; Y10S; Y10S271/00; Y10S271/90
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
333 words
In a copier in which images are formed on an imaging area of an imaging surface moving in a normal direction and transferred to a copy sheet, and in which said imaging surface also has a defined non-imaging edge area thereon adjacent to but outside of said imaging area, wherein the copy sheet is adhered to said imaging surface directly adjacent to, but not within, said edge area of said imaging surface, during said transfer, and wherein the adhering copy sheet is stripped from said imaging surface by a sheet stripping system engaging the lead edge thereof; the improvements in said sheet stripping system comprising: a mechanical copy sheet stripping member mounted to said copier adjacent a desired stripping point along said moving imaging surface, said stripping member having a bearing portion with a bearing surface which directly slidably engages said imaging surface only in said edge area thereof, outside of said imaging area thereof, said bearing surface being the only portion of said stripping member engaging said imaging surface, said stripping member having resilient mounting means for movement of said stripping member together with movement of said imaging surface in a direction perpendicular to said normal movement direction directly controlled by said engagement of said bearing portion thereof with said edge area, said stripping member having an integral stripping finger portion with a sheet stripping edge thereon for mechanically engaging and stripping a copy sheet from said imaging area at a corner of the sheet adjacent said edge area, said stripping finger portion and said stripping edge thereon being mounted to, and supported by, said bearing portion for movement therewith, said stripping finger portion extending from said bearing portion in said edge area out over said imaging area of said imaging surface, continuously spaced therefrom, with said stripping edge maintained closely spaced from said imaging area by less than the thickness of the copy sheet by said continuous engagement of said bearing portion with said non-imaging edge area of said imaging surface.
Claim 2
Dependent Claim
333 words
In a copier in which images are formed on an imaging area of an imaging surface moving in a normal direction and transferred to a copy sheet, and in which said imaging surface also has a defined non-imaging edge area thereon adjacent to but outside of said imaging area, wherein the copy sheet is adhered to said imaging surface directly adjacent to, but not within, said edge area of said imaging surface, during said transfer, and wherein the adhering copy sheet is stripped from said imaging surface by a sheet stripping system engaging the lead edge thereof; the improvements in said sheet stripping system comprising: a mechanical copy sheet stripping member mounted to said copier adjacent a desired stripping point along said moving imaging surface, said stripping member having a bearing portion with a bearing surface which directly slidably engages said imaging surface only in said edge area thereof, outside of said imaging area thereof, said bearing surface being the only portion of said stripping member engaging said imaging surface, said stripping member having resilient mounting means for movement of said stripping member together with movement of said imaging surface in a direction perpendicular to said normal movement direction directly controlled by said engagement of said bearing portion thereof with said edge area, said stripping member having an integral stripping finger portion with a sheet stripping edge thereon for mechanically engaging and stripping a copy sheet from said imaging area at a corner of the sheet adjacent said edge area, said stripping finger portion and said stripping edge thereon being mounted to, and supported by, said bearing portion for movement therewith, said stripping finger portion extending from said bearing portion in said edge area out over said imaging area of said imaging surface, continuously spaced therefrom, with said stripping edge maintained closely spaced from said imaging area by less than the thickness of the copy sheet by said continuous engagement of said bearing portion with said non-imaging edge area of said imaging surface.
Claim 3
Dependent Claim
29 words
The sheet stripping system of claim 1, wherein said stripping member, including said bearing portion and said stripping finger portion with said stripping edge, is a single monolithic unit.
Claim 4
Dependent Claim
27 words
The sheet stripping system of claim 1, wherein said stripping finger portion is a thick rigidly cantilevered integral extension of said bearing portion of said stripping member.
Claim 5
Dependent Claim
38 words
The sheet stripping system of claim 1, wherein said bearing surface underlies a major portion of said stripping member's dimensions transverse said normal direction of movement of said imaging surface to stably support said entire stripping member thereon.
Claim 6
Dependent Claim
41 words
The sheet stripping system of claim 1, wherein said bearing surface extends transversely of the direction of normal movement of said imaging surface by a distance greater than the distance by which said stripping finger portion extends from said bearing portion.
Claim 7
Dependent Claim
41 words
The sheet stripping system of claim 1, wherein said stripping edge of said stripping finger portion extends continuously from said edge area of said imaging surface out to the end of said stripping finger portion extending furthestmost into said imaging area.
Claim 8
Dependent Claim
44 words
The sheet stripping system of claim 6, wherein said sheet stripping edge is angularly disposed to the normal direction of movement of said imaging surface to provide a stripping edge angled relative to the lead edge of a copy sheet on said imaging surface.
Claim 9
Dependent Claim
25 words
The sheet stripping system of claim 1, wherein said spacing between said sheet stripping edge and said imaging surface is maintained less than 0.02 millimeters.
Claim 10
Dependent Claim
21 words
The sheet stripping system of claim 1, wherein said moving imaging surface is carried on a rotatably mounted generally cylindrical drum.
Claim 11
Dependent Claim
33 words
The sheet stripping system of claim 1, wherein said resilient mounting means are spring means forcibly springedly holding said bearing surface of said stripping member against said edge area of said imaging surface.
Claim 12
Dependent Claim
136 words
The sheet stripping system of claim 1, wherein said moving imaging surface is supported on a rotatably mounted generally cylindrical drum, said stripping finger portion is a thick rigidly cantilevered integral extension of said bearing portion of said stripping member, said bearing surface underlies a major portion of said stripping member's dimensions transverse said normal direction of movement of said imaging surface to stably support said entire stripping member thereon, said bearing surface extends transversely of the direction normal movement of said imaging surface by a distance greater than the distance by which said stripping finger portion extends from said bearing portion, and said stripping edge of said stripping finger portion extends continuously from said edge area of said imaging surface out to the end of said stripping finger portion extending furthestmost into said imaging area.
Claim 13
Dependent Claim
298 words
In a copying method in which images are formed on an imaging area of an imaging surface moving in a normal direction and transferred to a copy sheet, and in which said imaging surface also has a defined non-imaging edge area thereon adjacent to but outside of said imaging area, wherein the copy sheet is adhered to said imaging surface directly adjacent to, but not within, said edge area of said imaging surface, during said transfer, and wherein the adhering copy sheet is stripped from said imaging surface by a sheet stripping system engaging the lead edge thereof; the improvement in said sheet stripping comprising the steps of: mounting a mechanical copy sheet stripping member to said copier adjacent a desired stripping point along said moving imaging surface, slidably engaging said imaging surface only in said edge area thereof, outside of said imaging area thereof with a bearing surface of said stripping member, said bearing surface being the only portion of said stripping member engaging said imaging surface, resiliently moving said stripping member together with movement of said imaging surface in a direction perpendicular said normal movement direction directly controlled by said engagement of said bearing surface with said edge area, mechanically engaging and stripping a copy sheet from said imaging area at a corner of the sheet adjacent said edge area with an integral stripping finger portion of said stripping member with a sheet stripping edge thereon, said stripping finger portion being cantilevered from said bearing surface out over said imaging area of said imaging surface, maintained continuously spaced therefrom, with said stripping edge maintained closely spaced from said imaging area by less than the thickness of the copy sheet by said continuous engagement of said bearing portion with said nonimaging edge area of said imaging surface.
Claim 14
Dependent Claim
298 words
In a copying method in which images are formed on an imaging area of an imaging surface moving in a normal direction and transferred to a copy sheet, and in which said imaging surface also has a defined non-imaging edge area thereon adjacent to but outside of said imaging area, wherein the copy sheet is adhered to said imaging surface directly adjacent to, but not within, said edge area of said imaging surface, during said transfer, and wherein the adhering copy sheet is stripped from said imaging surface by a sheet stripping system engaging the lead edge thereof; the improvement in said sheet stripping comprising the steps of: mounting a mechanical copy sheet stripping member to said copier adjacent a desired stripping point along said moving imaging surface, slidably engaging said imaging surface only in said edge area thereof, outside of said imaging area thereof with a bearing surface of said stripping member, said bearing surface being the only portion of said stripping member engaging said imaging surface, resiliently moving said stripping member together with movement of said imaging surface in a direction perpendicular said normal movement direction directly controlled by said engagement of said bearing surface with said edge area, mechanically engaging and stripping a copy sheet from said imaging area at a corner of the sheet adjacent said edge area with an integral stripping finger portion of said stripping member with a sheet stripping edge thereon, said stripping finger portion being cantilevered from said bearing surface out over said imaging area of said imaging surface, maintained continuously spaced therefrom, with said stripping edge maintained closely spaced from said imaging area by less than the thickness of the copy sheet by said continuous engagement of said bearing portion with said nonimaging edge area of said imaging surface.
Claim 15
Dependent Claim
27 words
The sheet stripping method of claim 12, wherein said bearing surface of said stripping member is forcibly springedly held against said edge area of said imaging surface.
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) | 1981-02-06 | 1981-08-08 | 1982-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-06 | 1985-08-08 | 1986-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-06 | 1989-08-08 | 1990-02-07 | $7700.00 | Window Closed / Lapsed |