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US4501808A
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Recording medium and process employing a photosensitive organic film
Assignee: Canon Inc
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Filing: 1983-08-25
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Granted: 1985-02-26
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Expires: 2003-08-25
Abstract
Abstract An organic film comprising at least one compound of the following formulae (1)-(5): <IMAGE> (1) wherein R11 and R13 each represent substituted or unsubstituted aryl, R12 represents substituted or unsubstituted arylene, and A(-) represents an anionic residue; <IMAGE> (2) wherein R21, R22, and R24 each represent substituted or unsubstituted aryl, R23 represents substituted or unsubstituted arylene, and A(-) represents an anionic residue; <IMAGE> (3) wherein R31, R33, and R35 each represent substituted or unsubstituted aryl, R32 and R34 each represent substituted or unsubstituted arylene, and A(-) represents an anionic residue; <IMAGE> (4) wherein R41 represents alkyl, substituted or unsubstituted phenyl, or substituted or unsubstituted styryl, R42 represents substituted or unsubstituted arylene, R43 represents substituted or unsubstituted aryl, and A(-) represents an anionic residue; and <IMAGE> (5) wherein R51 represents alkoxy, R52 represents alkyl, R53 represents substituted or unsubstituted arylene, R54 represents substituted or unsubstituted aryl, A(-) represents an anionic residue, and n represents an integer of 1 or 2.
Inventors
- 👤 Kiyoshi Sakai
- 👤 Shozo Ishikawa
- 👤 Tetsuo Arita
- 👤 Minoru Mabuchi
- 👤 Shoji Umehara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:20
CPC Classifications
H; H10; H10K; H10K85/00; H10K85/60; H10K85/615; G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0664; G03G5/0666; G03G5/0672; G03G5/0674; G11; G11B; G11B7/00; G11B7/24; G11B7/241; G11B7/242; G11B7/244; H10F; H10F77/00; H10F77/30; H10F77/306; H10K85/626; H10K85/631; H10K85/633; H10K85/649; H10K85/654; H10K85/657; H10K85/6576; G11B7/245; G11B7/252; G11B7/253; G11B7/2532; G11B7/256; G11B7/258; G11B7/2585; G11B7/259; H10K39/00; H10K39/30; H10K39/32; H10K85/10; H10K85/141; H10K85/146; Y; Y10; Y10S; Y10S430/00; Y10S430/146
Claims Analysis
Total Claims: 60
Claim 1
Independent Claim
191 words
An electrophotographic photosensitive member having a conductive substrate and a photosensitive layer which comprises at least one compound of the following formulae (1)-(5), and a binder: ##STR26## wherein R 11 and R 13 each represent substituted or unsubstituted aryl, R 12 represents substituted or or unsubstituted arylene, and A.sup.⊖ represents an anionic residue; ##STR27## wherein R 21 , R 22 , and R 24 each represent substituted or unsubstituted aryl, R 23 represents substituted or unsubstituted arylene, and A.sup.⊖ represents an anionic residue; ##STR28## wherein R 31 , R 33 , and R 35 each represent substituted or unsubstituted aryl, R 32 and R 34 each represent substituted or unsubstituted arylene, and A.sup.⊖ represents an anionic residue; ##STR29## wherein R 41 represents alkyl, substituted or unsubstituted phenyl, or substituted or unsubstituted styryl, R 42 represents substituted or unsubstituted arylene, R 43 represents substituted or unsubstituted aryl, and A.sup.⊖ represents an anionic residue; and ##STR30## wherein R 51 represents alkoxy, R 52 represents alkyl, R 53 represents substituted or unsubstituted arylene, R 54 represents substituted or unsubstituted aryl, A.sup.⊖ represents an anionic residue, and n represents an integer of 1 or 2.
Claim 2
Dependent Claim
191 words
An electrophotographic photosensitive member having a conductive substrate and a photosensitive layer which comprises at least one compound of the following formulae (1)-(5), and a binder: ##STR26## wherein R 11 and R 13 each represent substituted or unsubstituted aryl, R 12 represents substituted or or unsubstituted arylene, and A.sup.⊖ represents an anionic residue; ##STR27## wherein R 21 , R 22 , and R 24 each represent substituted or unsubstituted aryl, R 23 represents substituted or unsubstituted arylene, and A.sup.⊖ represents an anionic residue; ##STR28## wherein R 31 , R 33 , and R 35 each represent substituted or unsubstituted aryl, R 32 and R 34 each represent substituted or unsubstituted arylene, and A.sup.⊖ represents an anionic residue; ##STR29## wherein R 41 represents alkyl, substituted or unsubstituted phenyl, or substituted or unsubstituted styryl, R 42 represents substituted or unsubstituted arylene, R 43 represents substituted or unsubstituted aryl, and A.sup.⊖ represents an anionic residue; and ##STR30## wherein R 51 represents alkoxy, R 52 represents alkyl, R 53 represents substituted or unsubstituted arylene, R 54 represents substituted or unsubstituted aryl, A.sup.⊖ represents an anionic residue, and n represents an integer of 1 or 2.
Claim 3
Dependent Claim
44 words
The electrophotographic photosensitive member of claim 1, wherein said compound is a polymethine compound of the following formula ##STR31## wherein R 11 and R 13 each denote substituted or unsubstituted aryl, R 12 denotes substituted or unsubstituted arylene, and A.sup.⊖ is an anionic residue.
Claim 4
Dependent Claim
48 words
The electrophotographic photosensitive member of claim 1, wherein said compound is a polymethine compound of the following formula ##STR32## wherein R 21 , R 22 , and R 24 each denote substituted or unsubstituted aryl, R 23 denotes substituted or unsubstituted arylene, and A.sup.⊖ is an anionic residue.
Claim 5
Dependent Claim
52 words
The electrophotographic photosensitive member of claim 1, wherein said compound is a polymethine compound of the following formula ##STR33## wherein R 31 , R 33 , and R 35 each denote substituted or unsubstituted aryl, R 32 and R 34 each denote substituted or unsubstituted arylene, and A.sup.⊖ is an anionic residue.
Claim 6
Dependent Claim
53 words
The electrophotographic photosensitive member of claim 1, wherein said compound is a naphthothiapyrylium compound of the following formula ##STR34## wherein R 41 is alkyl, substituted or unsubstituted phenyl, or substituted or unsubstituted styryl, R 42 denotes substituted or unsubstituted arylene, R 43 denotes substituted or unsubstituted aryl, and A.sup.⊖ is an anionic residue.
Claim 7
Dependent Claim
56 words
The electrophotographic photosensitive member of claim 1, wherein said compound is a benzothiapyrylium compound of the following formula ##STR35## wherein R 51 is alkoxy, R 52 is alkyl; R 53 denotes substituted or unsubstituted arylene, R 54 denotes substituted or unsubstituted aryl, A.sup.⊖ is an anionic residue, and n is an integer of 1 or 2.
Claim 8
Dependent Claim
22 words
The electrophotographic photosensitive member of claim 1, wherein said photosensitive layer contains another photoconductive substance besides the compound of the formulae (1)-(5).
Claim 9
Dependent Claim
16 words
The electrophotographic photosensitive member of claim 7, wherein said photoconductive substance is an organic photoconductive substance.
Claim 10
Dependent Claim
35 words
The electrophotographic photosensitive member of claim 8, wherein said organic photoconductive substance is at least one compound selected from the group consisting of hydrazones, pyrazoline compounds, oxazole compounds, thiazole compounds, triarylmethanes, polyarylalkanes, triphenylamine, and poly(N-vinyl-carbazole).
Claim 11
Dependent Claim
15 words
The electrophotographic photosensitive member of claim 9, wherein said organic photoconductive substance is a hydrazone.
Claim 12
Dependent Claim
16 words
The electrophotographic photosensitive member of claim 7, wherein said photoconductive substance is an inorganic photoconductive substance.
Claim 13
Dependent Claim
29 words
The electrophotographic photosensitive member of claim 11, wherein said inorganic photoconductive substance is at least one compound selected from the group consisting of zinc oxide, cadmium sulfide, and selenium.
Claim 14
Dependent Claim
21 words
The electrophotographic photosensitive member of claim 1, wherein an undercoating layer is laid between said conductive substrate and said photosensitive layer.
Claim 15
Dependent Claim
196 words
An electrophotographic photosensitive member having a conductive substrate, charge generation layer, and charge transport layer, said charge generation layer comprising a binder and at least one compound of the following formulae (1)-(5): ##STR36## wherein R 11 and R 13 each represent substituted or unsubstituted aryl, R 12 represents substituted or unsubstituted arylene, and A.sup.⊖ represents an anionic residue; ##STR37## wherein R 21 , R 22 , and R 24 each represent substituted or unsubstituted aryl, R 23 represents substituted or unsubstituted arylene, and A.sup.⊖ represents an anionic residue; ##STR38## wherein R 31 , R 33 , and R 35 each represent substituted or unsubstituted aryl, R 32 and R 34 each represent substituted or unsubstituted arylene, and A.sup.⊖ represents an anionic residue; ##STR39## wherein R 41 represents alkyl, substituted or unsubstituted phenyl, or substituted or unsubstituted styryl, R 42 represents substituted or unsubstituted arylene, R 43 represents substituted or unsubstituted aryl, and A.sup.⊖ represents an anionic residue; and ##STR40## wherein R 51 represents alkoxy, R 52 represents alkyl, R 53 represents substituted or unsubstituted arylene, R 54 represents substituted or unsubstituted aryl, A.sup.⊖ represents an anionic residue, and n represents an integer of 1 or 2.
Claim 16
Dependent Claim
196 words
An electrophotographic photosensitive member having a conductive substrate, charge generation layer, and charge transport layer, said charge generation layer comprising a binder and at least one compound of the following formulae (1)-(5): ##STR36## wherein R 11 and R 13 each represent substituted or unsubstituted aryl, R 12 represents substituted or unsubstituted arylene, and A.sup.⊖ represents an anionic residue; ##STR37## wherein R 21 , R 22 , and R 24 each represent substituted or unsubstituted aryl, R 23 represents substituted or unsubstituted arylene, and A.sup.⊖ represents an anionic residue; ##STR38## wherein R 31 , R 33 , and R 35 each represent substituted or unsubstituted aryl, R 32 and R 34 each represent substituted or unsubstituted arylene, and A.sup.⊖ represents an anionic residue; ##STR39## wherein R 41 represents alkyl, substituted or unsubstituted phenyl, or substituted or unsubstituted styryl, R 42 represents substituted or unsubstituted arylene, R 43 represents substituted or unsubstituted aryl, and A.sup.⊖ represents an anionic residue; and ##STR40## wherein R 51 represents alkoxy, R 52 represents alkyl, R 53 represents substituted or unsubstituted arylene, R 54 represents substituted or unsubstituted aryl, A.sup.⊖ represents an anionic residue, and n represents an integer of 1 or 2.
Claim 17
Dependent Claim
44 words
The electrophotographic photosensitive member of claim 14, wherein said compound is a polymethine compound of the following formula ##STR41## wherein R 11 and R 13 each denote substituted or unsubstituted aryl, R 12 denotes substituted or unsubstituted arylene, and A.sup.⊖ is an anionic residue.
Claim 18
Dependent Claim
48 words
The electrophotographic photosensitive member of claim 14, wherein said compound is a polymethine compound of the following formula ##STR42## wherein R 21 , R 22 , and R 24 each denote substituted or unsubstituted aryl, R 23 denotes substituted or unsubstituted arylene, and A.sup.⊖ is an anionic residue.
Claim 19
Dependent Claim
52 words
The electrophotographic photosensitive member of claim 14, wherein said compound is a polymethine compound of the following formula ##STR43## wherein, R 31 , R 33 , and R 35 each denote substituted or unsubstituted aryl, R 32 and R 34 each denotes substituted or unsubstituted arylene, and A.sup.⊖ is an anionic residue.
Claim 20
Dependent Claim
53 words
The electrophotographic photosensitive member of claim 14, wherein said compound is a naphthothiapyrylium compound of the following formula ##STR44## wherein R 41 is alkyl, substituted or unsubstituted phenyl, or substituted or unsubstituted styryl, R 42 denotes substituted or unsubstituted arylene, R 43 denotes substituted or unsubstituted aryl, and A.sup.⊖ is an anionic residue.
Claim 21
Dependent Claim
56 words
The electrophotographic photosensitive member of claim 14, wherein said compound is a benzothiapyrylium compound of the following formula ##STR45## wherein R 51 is alkoxy, R 52 is alkyl, R 53 denotes substituted or unsubstituted arylene, R 54 denotes substituted or unsubstituted aryl, A.sup.⊖ is an anionic residue; and n is an integer of 1 or 2.
Claim 22
Dependent Claim
23 words
The electrophotographic photosensitive member of claim 14, wherein the charge transport layer is laid on the upper side of the charge generation layer.
Claim 23
Dependent Claim
22 words
The electrophotographic photosensitive member of claim 20, wherein an undercoating layer is laid between the conductive substrate and the charge generation layer.
Claim 24
Dependent Claim
24 words
The electrophotographic photosensitive member of claim 14, wherein the compound of the formulae (1)-(5) in the charge generation layer is dispersed in the binder.
Claim 25
Dependent Claim
17 words
The electrophotographic photosensitive member of claim 22, wherein the charge generation layer has a thickness of 0.01-10μ.
Claim 26
Dependent Claim
17 words
The electrophotographic photosensitive member of claim 23, wherein the charge generation layer has a thickness of 0.05-2μ.
Claim 27
Dependent Claim
19 words
The electrophotographic photosensitive member of claim 14, wherein the charge transport layer comprises a charge-transporting material and a binder.
Claim 28
Dependent Claim
16 words
The electrophotographic photosensitive member of claim 25, wherein the charge transporting material is a hole-transporting material.
Claim 29
Dependent Claim
38 words
The electrophotographic photosensitive member of claim 26, wherein the hole-transporting material is at least one compound selected from the group consisting of hydrazones, pyrazoline compounds, oxazole compounds, thiazole compounds, triarylmethanes, polyarylalkanes, organic photoconductive polymers, pyrene, and carbazole derivatives.
Claim 30
Dependent Claim
14 words
The electrophotographic photosensitive member of claim 27, wherein the hole-transporting material is a hydrazone.
Claim 31
Dependent Claim
15 words
The electrophotographic photosensitive member of claim 27, wherein the hole-transporting material is a pyrazoline derivative.
Claim 32
Dependent Claim
15 words
The electrophotographic photosensitive member of claim 25, wherein the charge-transporting material is an electron-transporting material.
Claim 33
Dependent Claim
29 words
The electrophotographic photosensitive member of claim 30, wherein the electron-transporting material is at least one compound selected from the group consisting of chloranil, bromanil, tetracyanoethylene, tetracyanoquinodimethane, polynitrofluoroenones, and polynitroxanthones.
Claim 34
Dependent Claim
259 words
An electrophotographic process comprising the steps of (I) charging to the surface of a photosensitive member which is formed on a conductive substrate and has a charge generation layer and a charge transport layer, said charge generation layer comprising a binder and at aleast one compound of the following formulae (1)-(5); ##STR46## wherein R 11 and R 13 each represent substituted or unsubstituted aryl, R 12 represents substituted or unsubstituted arylene, and A.sup.⊖ represents an anionic residue; ##STR47## wherein R 21 , R 22 , and R 24 each represent substituted or unsubstituted aryl, R 23 represents substituted or unsubstituted arylene, and A.sup.⊖ represents an anionic residue; ##STR48## wherein R 31 , R 33 , and R 35 each represent substituted or unsubstituted aryl, R 32 and R 34 each represent substituted of unsubstituted arylene, and A.sup.⊖ represents an anionic residue; ##STR49## wherein R 41 represents alkyl, substituted or unsubstituted phenyl, or substituted or unsubstituted styryl, R 42 represents substituted or unsubstituted arylene, R 43 represents substituted or unsubstituted aryl, and A.sup.⊖ represents an anionic residue; and ##STR50## wherein R 51 represents alkoxy; R 52 represents alkyl, R 53 represents substituted or unsubstituted arylene, R 54 represents substituted or unsubstituted aryl; A.sup.⊖ represents an anionic residue, and n represents an integer of 1 or 2: (II) exposing the charged surface to an imaging laser beam: (III) developing the resulting electrostatic latent images with a toner: (IV) transferring the toner images onto a recording medium such as transfer paper: and (V) fixing the transferred toner images to the recording medium.
Claim 35
Dependent Claim
259 words
An electrophotographic process comprising the steps of (I) charging to the surface of a photosensitive member which is formed on a conductive substrate and has a charge generation layer and a charge transport layer, said charge generation layer comprising a binder and at aleast one compound of the following formulae (1)-(5); ##STR46## wherein R 11 and R 13 each represent substituted or unsubstituted aryl, R 12 represents substituted or unsubstituted arylene, and A.sup.⊖ represents an anionic residue; ##STR47## wherein R 21 , R 22 , and R 24 each represent substituted or unsubstituted aryl, R 23 represents substituted or unsubstituted arylene, and A.sup.⊖ represents an anionic residue; ##STR48## wherein R 31 , R 33 , and R 35 each represent substituted or unsubstituted aryl, R 32 and R 34 each represent substituted of unsubstituted arylene, and A.sup.⊖ represents an anionic residue; ##STR49## wherein R 41 represents alkyl, substituted or unsubstituted phenyl, or substituted or unsubstituted styryl, R 42 represents substituted or unsubstituted arylene, R 43 represents substituted or unsubstituted aryl, and A.sup.⊖ represents an anionic residue; and ##STR50## wherein R 51 represents alkoxy; R 52 represents alkyl, R 53 represents substituted or unsubstituted arylene, R 54 represents substituted or unsubstituted aryl; A.sup.⊖ represents an anionic residue, and n represents an integer of 1 or 2: (II) exposing the charged surface to an imaging laser beam: (III) developing the resulting electrostatic latent images with a toner: (IV) transferring the toner images onto a recording medium such as transfer paper: and (V) fixing the transferred toner images to the recording medium.
Claim 36
Dependent Claim
43 words
The electrophotographic process of claim 32, wherein said compound is a polymethine compound of the following formula ##STR51## wherein R 11 and R 13 each denote substituted or unsubstituted aryl, R 12 denotes substituted or unsubstituted arylene, and A.sup.⊖ is an anionic residue.
Claim 37
Dependent Claim
47 words
The electrophotographic process of claim 32, wherein said compound is a polymethine compound of the following formula ##STR52## wherein R 21 , R 22 , and R 24 each denote substituted or unsubstituted aryl, R 23 denotes substituted or unsubstituted arylene, and A.sup.⊖ is an anionic residue.
Claim 38
Dependent Claim
51 words
The electrophotographic process of claim 32, wherein said compound is a polymethine compound of the following formula ##STR53## wherein R 31 , R 33 , and R 35 each denote substituted or unsubstituted aryl, R 32 and R 34 each denotes substituted or unsubstituted arylene, and A.sup.⊖ is an anionic residue.
Claim 39
Dependent Claim
53 words
The electrophotographic process of claim 32, wherein said compound is a naphthothiapyrylium compound of the following formula ##STR54## PS wherein R 41 is alkyl, substituted or unsubstituted phenyl, or substituted or unsubstituted styryl; R 42 denotes substituted or unsubstituted arylene, R 43 denotes substituted or unsubstituted aryl, and A.sup.⊖ is an anionic residue.
Claim 40
Dependent Claim
55 words
The electrophotographic process of claim 32, wherein said compound is a benzothiapyrylium compound of the following formula ##STR55## wherein R 51 is alkoxy, R 52 is alkyl, R 53 denotes substituted or unsubstituted arylene, R 54 denotes substituted or unsubstituted aryl; A.sup.⊖ is an anionic residue, and n is an integer of 1 or 2.
Claim 41
Dependent Claim
14 words
The electrophotographic process of claim 32, wherein the laser used is a semiconductor laser.
Claim 42
Dependent Claim
18 words
The electrophotographic process of claim 32, wherein the laser beam has a wavelength of 750 nm or longer.
Claim 43
Dependent Claim
15 words
The electrophotographic process of claim 38, wherein the semiconductor laser is a gallium-aluminum-arsenic semiconductor laser.
Claim 44
Dependent Claim
22 words
The electrophotographic process of claim 32, wherein the charge transport layer is laid on the upper side of the charge generation layer.
Claim 45
Dependent Claim
189 words
An optical recording medium provided with a recording layer on a substrate, said recording layer comprising at least one compound of the following formulae (1)-(5): ##STR56## wherein R 11 and R 13 each represent substituted or unsubstituted aryl, R 12 represents substituted or unsubstituted arylene, and A.sup.⊖ represents an anionic residue; ##STR57## wherein R 21 , R 22 , and R 24 each represent substituted or unsubstituted aryl, R 23 represents substituted or unsubstituted arylene, and A.sup.⊖ represents an anionic residue; ##STR58## wherein R 31 , R 33 , and R 35 each represent substituted or unsubstituted aryl, R 32 and R 34 each represent substituted or unsubstituted arylene, and A.sup.⊖ represents an anionic residue; ##STR59## wherein R 41 represents alkyl, substituted or unsubstituted phenyl, or substituted or unsubstituted styryl, R 42 represents substituted or unsubstituted arylene R 43 represents substituted or unsubstituted aryl; and A.sup.⊖ represents an anionic residue; and ##STR60## wherein R 51 represents alkoxy, R 52 represents alkyl, R 53 represents substituted or unsubstituted arylene, R 54 represents substituted or unsubstituted aryl, A.sup.⊖ represents an anionic residue; and n represents an integer of 1 or 2.
Claim 46
Dependent Claim
189 words
An optical recording medium provided with a recording layer on a substrate, said recording layer comprising at least one compound of the following formulae (1)-(5): ##STR56## wherein R 11 and R 13 each represent substituted or unsubstituted aryl, R 12 represents substituted or unsubstituted arylene, and A.sup.⊖ represents an anionic residue; ##STR57## wherein R 21 , R 22 , and R 24 each represent substituted or unsubstituted aryl, R 23 represents substituted or unsubstituted arylene, and A.sup.⊖ represents an anionic residue; ##STR58## wherein R 31 , R 33 , and R 35 each represent substituted or unsubstituted aryl, R 32 and R 34 each represent substituted or unsubstituted arylene, and A.sup.⊖ represents an anionic residue; ##STR59## wherein R 41 represents alkyl, substituted or unsubstituted phenyl, or substituted or unsubstituted styryl, R 42 represents substituted or unsubstituted arylene R 43 represents substituted or unsubstituted aryl; and A.sup.⊖ represents an anionic residue; and ##STR60## wherein R 51 represents alkoxy, R 52 represents alkyl, R 53 represents substituted or unsubstituted arylene, R 54 represents substituted or unsubstituted aryl, A.sup.⊖ represents an anionic residue; and n represents an integer of 1 or 2.
Claim 47
Dependent Claim
44 words
The optical recording medium of claim 42, wherein said compound is a polymethine compound of the following formula ##STR61## wherein R 11 and R 13 each denote substituted or unsubstituted aryl, R 12 denotes substituted or unsubstituted arylene, and A.sup.⊖ is an anionic residue.
Claim 48
Dependent Claim
48 words
The optical recording medium of claim 42, wherein said compound is a polymethine compound of the following formula ##STR62## wherein R 21 , R 22 , and R 24 each denote substituted or unsubstituted aryl, R 23 denotes substituted or unsubstituted arylene, and A.sup.⊖ is an anionic residue.
Claim 49
Dependent Claim
52 words
The optical recording medium of claim 42, wherein said compound is a polymethine compound of the following formula ##STR63## wherein R 31 , R 33 , and R 35 each denote substituted or unsubstituted aryl, R 32 and R 34 each denote substituted or unsubstituted arylene, and A.sup.⊖ is an anionic residue.
Claim 50
Dependent Claim
53 words
The optical recording medium of claim 42, wherein said compound is a naphthothiapyrylium compound of the following formula ##STR64## wherein R 41 is alkyl, substituted or unsubstituted phenyl, or substituted or unsubstituted styryl, R 42 denotes substituted or unsubstituted arylene, R 43 denotes substituted or unsubstituted aryl, and A.sup.⊖ is an anionic residue.
Claim 51
Dependent Claim
56 words
The optical recording medium of claim 42, wherein said compound is a benzothiapyrylium compound of the following formula ##STR65## wherein R 51 is alkoxy; R 52 is alkyl, R 53 denotes substituted or unsubstituted arylene, R 54 denotes substituted or unsubstituted aryl, A.sup.⊖ is an anionic residue, and n is an integer of 1 or 2.
Claim 52
Dependent Claim
21 words
The optical recording medium of claim 42, wherein the recording layer comprises a compound of the formulae (1)-(5) and a binder.
Claim 53
Dependent Claim
38 words
The optical recording medium of claim 48, wherein the binder is at least one resin selected from the group consisting of cellulose esters, cellulose ethers, vinyl resins, acrylic resins, polyesters, polyacrylates, polyamides, polyimides, epoxy resins, and phenolic resins.
Claim 54
Dependent Claim
14 words
The optical recording medium of claim 49, wherein the binder is a cellulose ester.
Claim 55
Dependent Claim
13 words
The optical recording medium of claim 50, wherein the cellulose ester is nitrocellulose.
Claim 56
Dependent Claim
16 words
The optical recording medium of claim 42, wherein the recording layer has a thickness of 0.01-10μ.
Claim 57
Dependent Claim
16 words
The optical recording medium of claim 52, wherein the recording layer has a thickness of 0.05-2μ.
Claim 58
Dependent Claim
22 words
The optical recording medium of claim 42, wherein the recording layer is a vapor-deposited film of the compound of the formulae (1)-(5).
Claim 59
Dependent Claim
18 words
The optical recording medium of claim 42, wherein the substrate is made of a plastic, glass, or metal.
Claim 60
Dependent Claim
20 words
The optical recording medium of claim 42, wherein a reflecting layer is laid between the substrate and the recording layer.
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) | 1988-02-26 | 1988-08-27 | 1989-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-02-26 | 1992-08-27 | 1993-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-02-26 | 1996-08-27 | 1997-02-26 | $7700.00 | Window Closed / Lapsed |