US4400706A
Expired / Lapsed
US
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Discharge recording medium
Assignee: Honshu Seishi KK
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Filing: 1981-07-28
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Granted: 1983-08-23
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Expires: 2001-07-28
Abstract
Abstract A discharge recording medium having a colored insulating layer, a metal-vaporized layer and, as required, a protection layer formed in that order on a support member, wherein the colored insulating layer contains a graphite powder having particles of a specifically determined average size in an amount according to a specifically determined ratio with respect to a bonding resin in the colored insulating layer.
Inventors
- 👤 Shuji Takemura
- 👤 Kazumi Hirakawa
- 👤 Tsuneto Yoshizumi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:59
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/24; B41M5/245; G; G01; G01D; G01D15/00; G01D15/06
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
105 words
In a discharge recording medium comprising a colored insulating layer comprising an insulating bonding resin with or without a coloring agent, a metal-vaporized layer and, if desired, a protection layer that are formed in that order on a support member, the improvement wherein the colored insulating layer contains a graphite powder having an average particle diameter of 0.1 to 50 μm in amounts of greater than about 15 parts by weight per 100 parts by weight of a bonding resin which is contained in said colored insulating layer, so that the colored insulating layer has a surface resistivity of 10 10 to 10 13 ohms.
Claim 2
Dependent Claim
105 words
In a discharge recording medium comprising a colored insulating layer comprising an insulating bonding resin with or without a coloring agent, a metal-vaporized layer and, if desired, a protection layer that are formed in that order on a support member, the improvement wherein the colored insulating layer contains a graphite powder having an average particle diameter of 0.1 to 50 μm in amounts of greater than about 15 parts by weight per 100 parts by weight of a bonding resin which is contained in said colored insulating layer, so that the colored insulating layer has a surface resistivity of 10 10 to 10 13 ohms.
Claim 3
Dependent Claim
21 words
A discharge recording medium according to claim 1, wherein the graphite powder has an average diameter of 0.5 to 30 μm.
Claim 4
Dependent Claim
32 words
A discharge recording medium according to claim 1, wherein the content of the graphite powder is greater than about 20 parts by weight per 100 parts by weight of the bonding resin.
Claim 5
Dependent Claim
16 words
A discharge recording medium according to claim 1, wherein the bonding resin is a cellulose resin.
Claim 6
Dependent Claim
28 words
A discharge recording medium according to claim 1, wherein the colored insulating layer further contains a small amount of carbon black having particle diameters smaller than 0.1 μm.
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) | 1986-08-22 | 1987-02-21 | 1987-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-22 | 1991-02-21 | 1991-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-22 | 1995-02-21 | 1995-08-23 | $7700.00 | Window Closed / Lapsed |