Patent US3682137A successfully refreshed from Google Patents.
US3682137A
Expired / Lapsed
US
⏱️ 0.0 years remaining
J-shell developer housing
Assignee: Xerox Corp
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Filing: 1970-01-28
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Granted: 1972-08-08
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Expires: 1990-01-28
Abstract
Abstract Shell developer for electrostatic imaging apparatus. The shell structure is characterized by a J-shaped configuration having disposed within the shell a partition and baffle arrangement which effects movement of carrier particles and unused toner such that they are mixed with newly dispensed toner as the former and the latter strike the baffle which is disposed above the developer supply level in the shell.
Inventors
- 👤 Charles F Roth Jr
- 👤 Gordon C Butler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:57
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/06; G03G15/08; G03G15/082
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
193 words
Apparatus for developing a latent electrostatic image on a charge-retentive surface, said apparatus comprising: movable charge-retentive surface; housing structure capable of holding a quantity of developer material and being so constructed as to cause contacting of said charge-retentive surface by said developer material; means for moving said charge-retentive surface through a supply of developer ink in said housing and then in an upward direction; means disposed in said housing structure cooperating with said movable surface for effecting upward movement of developer, the spacing between said movable surface and said means disposed in said housing structure being substantially equal over the full extent of said means disposed within said housing structure; toner dispensing means disposed above said sump area and intermediate said partition and upwardly extending wall of said housing structure whereby dispensed toner is mixed with carrier material and unused toner prior to their return to the developer sump area; and baffle structure vertically disposed intermediate the outlet from said toner dispenser and the top level of developer in said sump, said baffle structure being so positioned as to form a mixing zone for newly added toner and unused toner and carrier particles.
Claim 2
Dependent Claim
193 words
Apparatus for developing a latent electrostatic image on a charge-retentive surface, said apparatus comprising: movable charge-retentive surface; housing structure capable of holding a quantity of developer material and being so constructed as to cause contacting of said charge-retentive surface by said developer material; means for moving said charge-retentive surface through a supply of developer ink in said housing and then in an upward direction; means disposed in said housing structure cooperating with said movable surface for effecting upward movement of developer, the spacing between said movable surface and said means disposed in said housing structure being substantially equal over the full extent of said means disposed within said housing structure; toner dispensing means disposed above said sump area and intermediate said partition and upwardly extending wall of said housing structure whereby dispensed toner is mixed with carrier material and unused toner prior to their return to the developer sump area; and baffle structure vertically disposed intermediate the outlet from said toner dispenser and the top level of developer in said sump, said baffle structure being so positioned as to form a mixing zone for newly added toner and unused toner and carrier particles.
Claim 3
Dependent Claim
122 words
Apparatus for developing a latent electrostatic image on a charge-retentive surface, said apparatus comprising: a movable charge-retentive surface; housing structure capable of holding a quantity of developer material and being so constructed as to cause contacting of said charge-retentive surface by said developer material; means for moving said charge-retentive surface through a supply of developer ink in said housing and then in an upward direction; means disposed in said housing structure cooperating with said movable surface for effecting upward movement of developer, the spacing between said movable surface and said means disposed in said housing structure being substantially equal over the full extent of said means disposed within said housing structure, said means disposed in said housing structure comprising a stationary partition.
Claim 4
Dependent Claim
122 words
Apparatus for developing a latent electrostatic image on a charge-retentive surface, said apparatus comprising: a movable charge-retentive surface; housing structure capable of holding a quantity of developer material and being so constructed as to cause contacting of said charge-retentive surface by said developer material; means for moving said charge-retentive surface through a supply of developer ink in said housing and then in an upward direction; means disposed in said housing structure cooperating with said movable surface for effecting upward movement of developer, the spacing between said movable surface and said means disposed in said housing structure being substantially equal over the full extent of said means disposed within said housing structure, said means disposed in said housing structure comprising a stationary partition.
Claim 5
Dependent Claim
33 words
Structure as specified in claim 2 wherein, the spacing between said partition and an upwardly extending wall of said housing structure is greater at the top of said wall than at the bottom.
Claim 6
Dependent Claim
16 words
Structure as specified in claim 3 wherein, said movable charge-retentive surface comprises an eLongated recording web.
Claim 7
Dependent Claim
219 words
Apparatus for developing a latent electrostatic image on a charge-retentive surface, said apparatus comprising: a movable charge-retentive surface; housing structure capable of holding a quantity of developer material and being so constructed as to cause contacting of said charge-retentive surface by said developer material; means for moving said charge-retentive surface through a supply of developer ink in said housing and then in an upward direction; means disposed in said housing structure cooperating with said movable surface for effecting upward movement of developer, the spacing between said movable surface and said means disposed in said housing structure being substantially equal over the full extend of said means disposed within said housing structure, toner dispensing means disposed above said sump area and intermediate said partition and upwardly extending wall of said housing structure whereby dispensed toner is mixed with carrier material and unused toner prior to their return to the developer sump area; and baffle structure vertically disposed intermediate the outlet from said toner dispenser and the top level of developer in said sump, said baffle structure being so positioned as to form a mixing zone for newly added toner and unused toner and carrier particles; said baffle structure being integral to said partition and inclined at an acute angle thereto such that mixed materials slide downwardly into the housing structure.
Claim 8
Dependent Claim
219 words
Apparatus for developing a latent electrostatic image on a charge-retentive surface, said apparatus comprising: a movable charge-retentive surface; housing structure capable of holding a quantity of developer material and being so constructed as to cause contacting of said charge-retentive surface by said developer material; means for moving said charge-retentive surface through a supply of developer ink in said housing and then in an upward direction; means disposed in said housing structure cooperating with said movable surface for effecting upward movement of developer, the spacing between said movable surface and said means disposed in said housing structure being substantially equal over the full extend of said means disposed within said housing structure, toner dispensing means disposed above said sump area and intermediate said partition and upwardly extending wall of said housing structure whereby dispensed toner is mixed with carrier material and unused toner prior to their return to the developer sump area; and baffle structure vertically disposed intermediate the outlet from said toner dispenser and the top level of developer in said sump, said baffle structure being so positioned as to form a mixing zone for newly added toner and unused toner and carrier particles; said baffle structure being integral to said partition and inclined at an acute angle thereto such that mixed materials slide downwardly into the housing structure.
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) | 1975-08-08 | 1976-02-07 | 1976-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-08 | 1980-02-07 | 1980-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-08 | 1984-02-07 | 1984-08-08 | $7700.00 | Window Closed / Lapsed |