US4589579A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Toner vessel for copying machine
Assignee: Ricoh Co Ltd
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Filing: 1984-05-01
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Granted: 1986-05-20
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Expires: 2004-05-01
Abstract
Abstract A toner vessel for use in a copying machine includes a square dish-shaped vessel body which is opened at the upper part, is provided with an outwardly projecting flange at the peripheral edge of said opening and receives the toner therein. The opening of the vessel body is covered with a lower part of a twice-folded cover sheet and its periphery is fitted on said flange. A cover plate, covering the lower part of this cover sheet, is mounted on the vessel body movably in the horizontal direction. A slit is provided in a place on the portion of this cover plate near the folded portion of the cover sheet, and simultaneously a projection for removing the toner is provided on the inside in the neighborhood of this slit on the side opposite to the folded portion. A folded upper portion of the cover sheet is designed to pass through the slit and then extend through the head of the projection for removing the toner along the back of the cover plate.
Inventors
- 👤 Yoshiharu Morita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:17
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/06; G03G15/08; G03G15/0822; G03G15/0877; G03G15/0881; G03G15/0882; Y; Y10; Y10S; Y10S222/00; Y10S222/01
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
218 words
A toner vessel for use in a copying machine including: a sqaure dish-shaped vessel body which has an opening at its upper part and is provided with an outwardly projecting flange at the peripheral edge of said opening, said vessel receiving the toner therein; a reversely folded cover sheet having an upper part and a lower part, said opening of said vessel body being openably covered with said lower part of said cover sheet, said lower part having a peripheral edge adhered to said outwardly projecting flange; a cover plate which covers said lower part of said cover sheet and is mounted on said vessel body for movement in the horizontal direction; said cover plate having a slit located at the portion of said cover plate near the folded portion of said cover sheet; said upper part of said cover sheet extending through said slit and thence along the back of said cover plate, the improvement which comprises: a projection being provided on the back of said cover plate adjacent to said slit for removing the toner that adheres to the cover sheet, said projection being located on the side of said slit in the direction in which said cover sheet is advanced when said opening is uncovered, said projection slidably contacting the back of said cover sheet.
Claim 2
Dependent Claim
218 words
A toner vessel for use in a copying machine including: a sqaure dish-shaped vessel body which has an opening at its upper part and is provided with an outwardly projecting flange at the peripheral edge of said opening, said vessel receiving the toner therein; a reversely folded cover sheet having an upper part and a lower part, said opening of said vessel body being openably covered with said lower part of said cover sheet, said lower part having a peripheral edge adhered to said outwardly projecting flange; a cover plate which covers said lower part of said cover sheet and is mounted on said vessel body for movement in the horizontal direction; said cover plate having a slit located at the portion of said cover plate near the folded portion of said cover sheet; said upper part of said cover sheet extending through said slit and thence along the back of said cover plate, the improvement which comprises: a projection being provided on the back of said cover plate adjacent to said slit for removing the toner that adheres to the cover sheet, said projection being located on the side of said slit in the direction in which said cover sheet is advanced when said opening is uncovered, said projection slidably contacting the back of said cover sheet.
Claim 3
Dependent Claim
67 words
A toner vessel according to claim 1 wherein said cover plate has two side flanges located on opposite sides thereof and which are bent inwardly to form bent portions that define grooves, and wherein said peripheral edge of said vessel body defines two flange portions on opposite sides of said vessel body, said flange portions of said vessel body extending into said grooves of said cover plate.
Claim 4
Dependent Claim
21 words
A toner vessel according to claim 1 or claim 2 wherein said projection for removing the toner is made of sponge.
References Cited (Backward Citations)
US3999654A
Cited
US4062385A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-05-19 | 1989-11-18 | 1990-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-05-19 | 1993-11-18 | 1994-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-05-19 | 1997-11-18 | 1998-05-20 | $7700.00 | Window Closed / Lapsed |