US4717638A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Paper for electrostatography using encapsulated toner
Assignee: Fujifilm Holdings Corp
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Filing: 1986-04-16
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Granted: 1988-01-05
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Expires: 2006-04-16
Abstract
Abstract A paper for electrostatography using an encapsulated toner which comprises a core and a shell enclosing the core, characterized in that the optically measured surface roughness value (Rp value) is not more than 3.2 μm.
Inventors
- 👤 Takeshi Mikami
- 👤 Masakazu Maekawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:00
CPC Classifications
G; G03; G03G; G03G9/00; G03G9/08; G03G9/093; G03G7/00; G03G7/006; G03G9/0825
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
62 words
In an electrostatographic process wherein an encapsulated toner which comprises a core and a shell enclosing the core is fixed on a substrate under pressure to form a toner image, the improvement which comprises the substrate for retaining the toner image under fixation being a sized fibrous paper sheet having a optically measured surface roughness value of not more than 3.2 μm.
Claim 2
Dependent Claim
62 words
In an electrostatographic process wherein an encapsulated toner which comprises a core and a shell enclosing the core is fixed on a substrate under pressure to form a toner image, the improvement which comprises the substrate for retaining the toner image under fixation being a sized fibrous paper sheet having a optically measured surface roughness value of not more than 3.2 μm.
Claim 3
Dependent Claim
28 words
The electrostatographic process as claimed in claim 1 in which said optically measured surface roughness value of the sized fibrous paper sheet is not more than 2.9 μm.
Claim 4
Dependent Claim
21 words
The electrostatographic process as claimed in claim 1 in which the fibers of the sized fibrous paper sheet are wood pulp.
Claim 5
Dependent Claim
21 words
The electrostatographic process as claimed in claim 2 in which the fibers of the sized fibrous paper sheet are wood pulp.
Claim 6
Dependent Claim
25 words
The electrostatographic process as claimed in claim 1 in which the sized fibrous paper sheet possesses a Cobb size degree of 15-25 g/m 2 .
Claim 7
Dependent Claim
25 words
The electrostatographic process as claimed in claim 2 in which the sized fibrous paper sheet possesses a Cobb size degree of 15-25 g/m 2 .
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) | 1991-01-04 | 1991-07-06 | 1992-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-01-04 | 1995-07-06 | 1996-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-01-04 | 1999-07-06 | 2000-01-05 | $7700.00 | Window Closed / Lapsed |