Patent US4363550A successfully refreshed from Google Patents.
US4363550A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recording sheet separating device in a transfer-type electronic copying machine
Assignee: Toshiba Corp
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Filing: 1980-12-04
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Granted: 1982-12-14
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Expires: 2000-12-04
Abstract
Abstract In a transfer-type electronic copying machine including a photosensitive drum, charging device, exposure device, developing device, transfer device, and separating device, the separating device of this invention has a separating section for separating a recording sheet bearing a toner image thereon from the surface of the photosensitive drum. The recording sheet is guided by a guide roller facing the photosensitive drum and having a slit formed therein, and is brought in contact with a conductive brush through the slit to be de-electrified.
Inventors
- 👤 Kenshi Toshimitsu
- 👤 Akihiro Kanazashi
- 👤 Mitsuaki Kohyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:47
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/65; G03G15/6532; G03G15/6535; Y; Y10; Y10S; Y10S271/00; Y10S271/90
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
120 words
A separating device for use in a transfer-type copying machine for separating a recording sheet from a surface of a photosensitive member after a developed image on the surface of the photosensitive member has been transferred to the recording sheet at an image transfer station, said separating device comprising: (a) separating means for separating the recording sheet bearing a toner image thereon from the surface of said photosensitive member; (b) guide means, facing said photosensitive member and having at least one opening, for supporting the separated recording sheet; and (c) de-electrifying means, separate from said guide means, for de-electrifying said recording sheet through said opening, said guide means maintaining constant the distance between said recording sheet and said de-electrifying means.
Claim 2
Dependent Claim
120 words
A separating device for use in a transfer-type copying machine for separating a recording sheet from a surface of a photosensitive member after a developed image on the surface of the photosensitive member has been transferred to the recording sheet at an image transfer station, said separating device comprising: (a) separating means for separating the recording sheet bearing a toner image thereon from the surface of said photosensitive member; (b) guide means, facing said photosensitive member and having at least one opening, for supporting the separated recording sheet; and (c) de-electrifying means, separate from said guide means, for de-electrifying said recording sheet through said opening, said guide means maintaining constant the distance between said recording sheet and said de-electrifying means.
Claim 3
Dependent Claim
23 words
A separating device according to claim 1, wherein said guide means is a cylindrical turn roller inside which said de-electrifying means is disposed.
Claim 4
Dependent Claim
18 words
A separating device according to claim 1, wherein said guide means is a plate having a curved surface.
Claim 5
Dependent Claim
24 words
A separating device according to claim 1, wherein said de-electrifying means is a conductive brush inserted in said opening to face said recording sheet.
Claim 6
Dependent Claim
23 words
A separating device according to claim 1, wherein said de-electrifying means is an AC corona charger to charge said recording sheet with electricity.
References Cited (Backward Citations)
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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) | 1985-12-13 | 1986-06-14 | 1986-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-12-13 | 1990-06-14 | 1990-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-12-13 | 1994-06-14 | 1994-12-14 | $7700.00 | Window Closed / Lapsed |