US5264266A
Expired / Lapsed
US
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Information recording medium including an organic polysilane and an oxo metallic phthalocyaning
Assignee: Kyocera Mita Industrial Co Ltd
•
Filing: 1991-09-09
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Granted: 1993-11-23
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Expires: 2011-09-09
Abstract
Abstract An information recording medium comprises a recording layer including a mixture of organic polysilane and oxo metallic phthalocyanine pigment. Information is recorded by adding heat or light to the recording layer. In a method for recording information onto the information recording medium, a decoloring reaction of oxo metallic phthalocyanine pigment is used which is caused by heating the recording layer to a temperature equal to or higher than a pyrolyzing point of organic polysilane.
Inventors
- 👤 Masaaki Yokoyama
- 👤 Mikio Kakui
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:11
CPC Classifications
G; G11; G11B; G11B7/00; G11B7/24; G11B7/241; G11B7/242; G11B7/244; G11B7/246; G11B7/248; G11B7/004; G11B7/0045; G11B7/00455; G11B7/245; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10S430/00; Y10S430/146; Y10S430/165
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
62 words
An information recording medium for recording information by adding heat or light to a recording layer on a substrate, wherein said recording layer includes a mixture of organic polysilane and oxo metallic phthalocyanine pigment, and wherein information is capable of being recorded on the information recording medium by use of a decoloring reaction between the organic polysilane and the oxo metallic phthalocyanine.
Claim 2
Dependent Claim
62 words
An information recording medium for recording information by adding heat or light to a recording layer on a substrate, wherein said recording layer includes a mixture of organic polysilane and oxo metallic phthalocyanine pigment, and wherein information is capable of being recorded on the information recording medium by use of a decoloring reaction between the organic polysilane and the oxo metallic phthalocyanine.
Claim 3
Dependent Claim
15 words
An information recording medium as claimed in claim 1, wherein said organic polysilane is phenylmethylpolysilane.
Claim 4
Dependent Claim
17 words
An information recording medium as claimed in claim 1, wherein said oxo metallic phthalocyanine pigment is titanylphthalocyanine.
Claim 5
Dependent Claim
23 words
An information recording medium as claimed in claim 1, wherein said organic polysilane is phenylmethylpolysilane and said oxo metallic phthalocyanine pigment is titanylphthalocyanine.
Claim 6
Dependent Claim
68 words
An information recording medium for recording information by adding heat or light to a recording layer on a substrate, wherein said recording layer comprises a first layer including oxo metallic phthalocyanine pigment and a second layer consisting of organic polysilane, and wherein information is capable of being recorded on the information recording medium by use of a decoloring reaction between the organic polysilane and the oxo metallic phthalocyanine.
Claim 7
Dependent Claim
68 words
An information recording medium for recording information by adding heat or light to a recording layer on a substrate, wherein said recording layer comprises a first layer including oxo metallic phthalocyanine pigment and a second layer consisting of organic polysilane, and wherein information is capable of being recorded on the information recording medium by use of a decoloring reaction between the organic polysilane and the oxo metallic phthalocyanine.
Claim 8
Dependent Claim
15 words
An information recording medium as claimed in claim 5, wherein said organic polysilane is phenylmethylpolysilane.
Claim 9
Dependent Claim
17 words
An information recording medium as claimed in claim 5, wherein said oxo metallic phthalocyanine pigment is titanylphthalocyanine.
Claim 10
Dependent Claim
23 words
An information recording medium as claimed in claim 5, wherein said organic polysilane is phenylmethylpolysilane and said oxo metallic phthalocyanine pigment is titanylphthalocyanine.
Claim 11
Dependent Claim
92 words
An information recording medium for recording information by applying heat or ultraviolet radiation to a recording layer on a substrate, wherein said recording layer includes an organic polysilane and an oxo metallic phthalocyanine pigment, wherein said organic polysilane and said oxo metallic phthalocyanine pigment are selected so as to react together after exposure to both heat and ultraviolet radiation in a decoloring reaction, and wherein information is capable of being recorded on the information recording medium by the decoloring reaction which takes place between the organic polysilane and the oxo metallic phthalocyanine.
Claim 12
Dependent Claim
92 words
An information recording medium for recording information by applying heat or ultraviolet radiation to a recording layer on a substrate, wherein said recording layer includes an organic polysilane and an oxo metallic phthalocyanine pigment, wherein said organic polysilane and said oxo metallic phthalocyanine pigment are selected so as to react together after exposure to both heat and ultraviolet radiation in a decoloring reaction, and wherein information is capable of being recorded on the information recording medium by the decoloring reaction which takes place between the organic polysilane and the oxo metallic phthalocyanine.
Claim 13
Dependent Claim
15 words
An information recording medium as claimed in claim 9, wherein said organic polysilane is phenylmethylpolysilane.
Claim 14
Dependent Claim
17 words
An information recording medium as claimed in claim 9, wherein said oxo metallic phthalocyanine pigment is titanylphthalocyanine.
Claim 15
Dependent Claim
23 words
An information recording medium as claimed in claim 9, wherein said organic polysilane is phenylmethylpolysilane and said oxo metallic phthalocyanine pigment is titanylphthalocyanine.
Claim 16
Dependent Claim
24 words
An information recording medium as claimed in claim 9, wherein said organic polysilane and said oxo metallic phthalocyanine are present in a single layer.
Claim 17
Dependent Claim
23 words
An information recording medium as claimed in claim 9, wherein said organic polysilane and said oxo metallic phthalocyanine are present in separate layers.
Claim 18
Dependent Claim
88 words
An information recording medium with information recorded thereon by applying heat or light to a recording layer on a substrate, wherein said recording layer includes an organic polysilane and an oxo metallic phthalocyanine pigment, wherein said organic polysilane and said oxo metallic phthalocyanine pigment are selected so as to react together after exposure to both heat and light in a decoloring reaction, and wherein information is recorded on the information recording medium by the decoloring reaction which takes place between the organic polysilane and the oxo metallic phthalocyanine.
Claim 19
Dependent Claim
88 words
An information recording medium with information recorded thereon by applying heat or light to a recording layer on a substrate, wherein said recording layer includes an organic polysilane and an oxo metallic phthalocyanine pigment, wherein said organic polysilane and said oxo metallic phthalocyanine pigment are selected so as to react together after exposure to both heat and light in a decoloring reaction, and wherein information is recorded on the information recording medium by the decoloring reaction which takes place between the organic polysilane and the oxo metallic phthalocyanine.
Claim 20
Dependent Claim
15 words
An information recording medium as claimed in claim 15, wherein said organic polysilane is phenylmethylpolysilane.
Claim 21
Dependent Claim
17 words
An information recording medium as claimed in claim 15, wherein said oxo metallic phthalocyanine pigment is titanylphthalocyanine.
Claim 22
Dependent Claim
23 words
An information recording medium as claimed in claim 15, wherein said organic polysilane is phenylmethylpolysilane and said oxo metallic phthalocyanine pigment is titanylphthalocyanine.
Claim 23
Dependent Claim
24 words
An information recording medium as claimed in claim 15, wherein said organic polysilane and said oxo metallic phthalocyanine are present in a single layer.
Claim 24
Dependent Claim
23 words
An information recording medium as claimed in claim 15, wherein said organic polysilane and said oxo metallic phthalocyanine are present in separate layers.
References Cited (Backward Citations)
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| 3.5 Years (Year 4) | 1996-11-22 | 1997-05-24 | 1997-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-11-22 | 2001-05-24 | 2001-11-23 | $3760.00 | Window Closed / Lapsed |
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