Patent US4958827A successfully refreshed from Google Patents.
US4958827A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet ejector
Assignee: Ricoh Co Ltd
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Filing: 1989-09-05
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Granted: 1990-09-25
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Expires: 2009-09-05
Abstract
Abstract A sheet ejector for transporting sheets discharged from a sheet handling apparatus such as electronic copying machine or facsimile machine to a sheet tray is disclosed. The sheet discharged from the sheet handling apparatus is pinched by a movable member which is moved to the sheet tray to transport the sheet therewith and to eject the sheet to the sheet tray.
Inventors
- 👤 Tamaki Kaneko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:00
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/65; G03G15/6552; B; B65; B65H; B65H29/00; B65H29/20; B65H29/22
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
177 words
A sheet ejector for transporting sheets discharged from a sheet handling apparatus to a sheet tray having a sheet receiving plane arranged substantially horizontally comprising: a movable member vertically movable from a wait position corresponding to a sheet discharge port of said sheet handling apparatus toward said sheet receiving plane of said sheet tray; a pair of rollers, a drive device for said rollers and stopping means for said rollers which are disposed on said movable member for holding a sheet discharged from said sheet handling apparatus and for discharging the sheet to said sheet tray by rotating; means for discharging sheets from said sheet handling apparatus so that said discharged sheet is held by said pair of rollers on said movable member positioned in said wait position; means for transporting said movable member to a position in which said pair of rollers are located above an uppermost sheet of sheets stacked on said sheet tray while holding the sheets by said pair of rollers; and means for rotating said pair of rollers to discharge the sheet.
Claim 2
Dependent Claim
177 words
A sheet ejector for transporting sheets discharged from a sheet handling apparatus to a sheet tray having a sheet receiving plane arranged substantially horizontally comprising: a movable member vertically movable from a wait position corresponding to a sheet discharge port of said sheet handling apparatus toward said sheet receiving plane of said sheet tray; a pair of rollers, a drive device for said rollers and stopping means for said rollers which are disposed on said movable member for holding a sheet discharged from said sheet handling apparatus and for discharging the sheet to said sheet tray by rotating; means for discharging sheets from said sheet handling apparatus so that said discharged sheet is held by said pair of rollers on said movable member positioned in said wait position; means for transporting said movable member to a position in which said pair of rollers are located above an uppermost sheet of sheets stacked on said sheet tray while holding the sheets by said pair of rollers; and means for rotating said pair of rollers to discharge the sheet.
Claim 3
Dependent Claim
24 words
A sheet ejector as claimed in claim 1, further comprising: a sheet position sensor disposed on said movable member for detecting said uppermost sheet.
Claim 4
Dependent Claim
34 words
A sheet ejector as claimed in claim 1, further comprising: a one-way clutch means for permitting said rollers to rotate only in such a direction as to discharge a sheet to said sheet tray.
Claim 5
Dependent Claim
60 words
A sheet ejector as claimed in claim 1, further comprising: a sheet sensor for detecting a front edge of a sheet to determine a period of time of rotating of said rollers for holding the sheet, and for detecting a trailing edge of the sheet to determine a period of time of rotation of said rollers for discharging the sheet.
Claim 6
Dependent Claim
42 words
A sheet ejector as claimed in claim 1, in which said stopping means for preventing of withdrawing of said sheet comprising a one way clutch, a spring for pressing said pinch rollers toward each other and a means for stopping said motor.
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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) | 1993-09-24 | 1994-03-26 | 1994-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-09-24 | 1998-03-26 | 1998-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-09-24 | 2002-03-26 | 2002-09-25 | $7700.00 | Window Closed / Lapsed |