US4017174A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Developer assembly support
Assignee: Xerox Corp
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Filing: 1975-10-14
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Granted: 1977-04-12
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Expires: 1995-10-14
Abstract
Abstract An electrostatographic apparatus having a movable liquid development assembly to compensate for variance between the liquid developer applicator roll and the imaging surface in which the development assembly comprises a reservoir receptacle having a liquid developer applicator roll member movable into and out of contact with the surface of an imaging member, the receptacle having support means including a plurality of arms to suspend the development assembly from a fixed support.
Inventors
- 👤 Robert Andrew Cheeseman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:39
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/06; G03G15/10; G03G15/101
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
89 words
An electrostatographic apparatus comprising a liquid development assembly having support means therefor, said liquid development assembly having an applicator roll movable into and out of contact with the surface of an imaging member, said support means including a plurality of arms holding said liquid development assembly for movement in a plane substantially perpendicular to said imaging member surface at the area of contact with said applicator roll when they are in contact to compensate for variances therebetween and provide a uniform width of engagement along the length of contact.
Claim 2
Dependent Claim
89 words
An electrostatographic apparatus comprising a liquid development assembly having support means therefor, said liquid development assembly having an applicator roll movable into and out of contact with the surface of an imaging member, said support means including a plurality of arms holding said liquid development assembly for movement in a plane substantially perpendicular to said imaging member surface at the area of contact with said applicator roll when they are in contact to compensate for variances therebetween and provide a uniform width of engagement along the length of contact.
Claim 3
Dependent Claim
52 words
A device according to claim 1 wherein said development assembly has a forward portion adjacent to and generally parallel with said applicator roll and a rear-ward portion generally parallel to said applicator roll and spaced therefrom, at least one of said support means cooperating with each of said forward and rear-ward portions.
Claim 4
Dependent Claim
18 words
A device according to claim 1 wherein each of said support means are generally parallel to one another.
Claim 5
Dependent Claim
34 words
A device according to claim 1 wherein said imaging member is of a cylindrical shape, said applicator roll forming a uniform nip with the surface of said imaging member across the area of engagement.
Claim 6
Dependent Claim
27 words
A device according to claim 1 wherein said liquid development assembly is biased by an external spring force to urge said applicator roll against said imaging member.
Claim 7
Dependent Claim
22 words
A device according to claim 1 wherein said support means comprise flexible strap-like arms suspending said development assembly from a fixed support.
Claim 8
Dependent Claim
29 words
A device according to claim 6 wherein each of said arms is fixed at first end to said development assembly and at a second end to said fixed support.
Claim 9
Dependent Claim
23 words
A device according to claim 1 wherein said support means transmit a spring force to bias said applicator roll against said imaging member.
Claim 10
Dependent Claim
20 words
A device according to claim 8 wherein said support arms are each inherently a spring and provide said spring force.
Claim 11
Dependent Claim
24 words
A device according to claim 1 wherein said support means comprise pivotally mounted, structurally rigid arms suspending the development assembly from a fixed support.
Claim 12
Dependent Claim
31 words
A device according to claim 10 wherein each of said arms is pivotally mounted at a first end to the development assembly an at a second end to the fixed support.
References Cited (Backward Citations)
US470164A
Cited
US3931792A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-04-11 | 1980-10-11 | 1981-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-11 | 1984-10-11 | 1985-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-11 | 1988-10-11 | 1989-04-12 | $7700.00 | Window Closed / Lapsed |