US4341855A
Expired / Lapsed
US
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Photographic element provided with a magnetic recording stripe and method and composition for manufacture thereof
Assignee: Eastman Kodak Co
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Filing: 1980-06-18
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Granted: 1982-07-27
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Expires: 2000-06-18
Abstract
Abstract Photographic elements are provided with a magnetic stripe that is useful for sound recording by applying a magnetic striping composition, containing finely-divided magnetic particles and an acrylated epoxy resin, over the anti-halation layer of the element. The striping composition penetrates the anti-halation layer to contact the support and is cured to an alkali-insoluble cross-linked stripe which is composite with the anti-halation layer and strongly bonded to the support so as to resist removal by alkaline photographic processing solutions.
Inventors
- 👤 Edward D. Morrison
- 👤 Harry J. Krall
- 👤 David L. Carr
- 👤 Chen-i Lu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:40
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/62; G11B5/633; G03; G03C; G03C5/00; G03C5/12; Y; Y10; Y10S; Y10S428/00; Y10S428/90
Claims Analysis
Total Claims: 41
Claim 1
Independent Claim
197 words
A method of forming a magnetic stripe on a photographic element, said element comprising a support having thereon an anti-halation layer which contains an alkali-soluble binder that renders such layer removable by an alkaline photographic processing solution, said magnetic stripe being composite with said anti-halation layer and bonded to said support so as to resist removal by an alkaline photographic processing solution, which method comprises the steps of: (1) depositing on the anti-halation layer of said element a stripe of a composition comprising a suspension of finely-divided magnetic particles in a liquid medium which is capable of penetrating through said anti-halation layer and being cured to an alkali-insoluble cross-linked polymeric matrix which surrounds said magnetic particles and bonds to said support, said liquid medium, consisting essentially of (a) an acrylated epoxy resin, (b) a polymerizable acrylic monomer, and (c) an organic solvent that is capable of solubilizing said anti-halation layer, and (2) curing said stripe to convert said liquid medium to an alkali-insoluble cross-linked polymeric matrix which surrounds said magnetic particles and bonds to said support, thereby forming a magnetic stripe which is composite with said anti-halation layer and resistant to removal by alkaline photographic processing solutions.
Claim 2
Independent Claim
197 words
A method of forming a magnetic stripe on a photographic element, said element comprising a support having thereon an anti-halation layer which contains an alkali-soluble binder that renders such layer removable by an alkaline photographic processing solution, said magnetic stripe being composite with said anti-halation layer and bonded to said support so as to resist removal by an alkaline photographic processing solution, which method comprises the steps of: (1) depositing on the anti-halation layer of said element a stripe of a composition comprising a suspension of finely-divided magnetic particles in a liquid medium which is capable of penetrating through said anti-halation layer and being cured to an alkali-insoluble cross-linked polymeric matrix which surrounds said magnetic particles and bonds to said support, said liquid medium, consisting essentially of (a) an acrylated epoxy resin, (b) a polymerizable acrylic monomer, and (c) an organic solvent that is capable of solubilizing said anti-halation layer, and (2) curing said stripe to convert said liquid medium to an alkali-insoluble cross-linked polymeric matrix which surrounds said magnetic particles and bonds to said support, thereby forming a magnetic stripe which is composite with said anti-halation layer and resistant to removal by alkaline photographic processing solutions.
Claim 3
Independent Claim
203 words
A method of forming a magnetic stripe on a photographic element, said element comprising a support having thereon an anti-halation layer which contains an alkali-soluble binder that renders such layer removable by an alkaline photographic processing solution, said magnetic stripe being composite with said anti-halation layer and bonded to said support so as to resist removal by an alkaline photographic processing solution, which method comprises the steps of: (1) depositing on the anti-halation layer of said element a stripe of a composition comprising a suspension of finely-divided magnetic particles in a liquid medium which is capable of penetrating through said anti-halation layer and being cured to an alkali-insoluble cross-linked polymeric matrix which surrounds said magnetic particles and bonds to said support, said liquid medium consisting essentially of (a) an acrylated epoxy resin, (b) a polymerizable acrylic monomer, (c) a lower aliphatic alcohol and (d) a member selected from the group consisting of ketones and organic esters, and (2) curing said stripe to convert said liquid medium to an alkali-insoluble cross-linked polymeric matrix which surrounds said magnetic particles and bonds to said support, thereby forming a magnetic stripe which is composite with said anti-halation layer and resistant to removal by alkaline photographic processing solutions.
Claim 4
Independent Claim
203 words
A method of forming a magnetic stripe on a photographic element, said element comprising a support having thereon an anti-halation layer which contains an alkali-soluble binder that renders such layer removable by an alkaline photographic processing solution, said magnetic stripe being composite with said anti-halation layer and bonded to said support so as to resist removal by an alkaline photographic processing solution, which method comprises the steps of: (1) depositing on the anti-halation layer of said element a stripe of a composition comprising a suspension of finely-divided magnetic particles in a liquid medium which is capable of penetrating through said anti-halation layer and being cured to an alkali-insoluble cross-linked polymeric matrix which surrounds said magnetic particles and bonds to said support, said liquid medium consisting essentially of (a) an acrylated epoxy resin, (b) a polymerizable acrylic monomer, (c) a lower aliphatic alcohol and (d) a member selected from the group consisting of ketones and organic esters, and (2) curing said stripe to convert said liquid medium to an alkali-insoluble cross-linked polymeric matrix which surrounds said magnetic particles and bonds to said support, thereby forming a magnetic stripe which is composite with said anti-halation layer and resistant to removal by alkaline photographic processing solutions.
Claim 5
Dependent Claim
32 words
A method as claimed in claim 1 wherein said acrylated epoxy resin has the formula: ##STR6## wherein R is a hydrogen atom or a methyl group and n is 1 to 20.
Claim 6
Dependent Claim
16 words
A method as claimed in claim 1 wherein said polymerizable acrylic monomer is a difunctional monomer.
Claim 7
Dependent Claim
87 words
A method as claimed in claim 1 wherein said polymerizable acrylic monomer has the formula: ##STR7## wherein each R 1 is independently selected from the group consisting of a hydrogen atom and an alkyl group of 1 to 2 carbon atoms, and each R 2 is independently selected from the group consisting of an alkyl group of 1 to 6 carbon atoms and a radical of the formula: ##STR8## in which R 3 is a hydrogen atom or an alkyl group of 1 to 2 carbon atoms.
Claim 8
Dependent Claim
15 words
A method as claimed in claim 1 wherein said polymerizable acrylic monomer is neopentylglycol diacrylate.
Claim 9
Dependent Claim
18 words
A method as claimed in claim 1 wherein said polymerizable acrylic monomer comprises butyl acrylate and neopentylglycol diacrylate.
Claim 10
Dependent Claim
15 words
A method as claimed in claim 1 wherein said organic solvent comprises methanol and acetone.
Claim 11
Dependent Claim
16 words
A method as claimed in claim 1 wherein said organic solvent comprises methanol and ethyl acetate.
Claim 12
Dependent Claim
13 words
A method as claimed in claim 1 wherein said support is cellulose triacetate.
Claim 13
Dependent Claim
15 words
A method as claimed in claim 1 wherein said alkali-soluble binder is cellulose acetate phthalate.
Claim 14
Independent Claim
207 words
A method of forming a magnetic stripe on a photographic element comprising a support having thereon an anti-halation layer which contains an alkali-soluble binder that renders such layer removable by an alkaline photographic processing solution, said magnetic stripe being composite with said anti-halation layer and bonded to said support so as to resist removal by an alkaline photographic processing solution, which method comprises the steps of: (1) depositing on the anti-halation layer of said element a stripe of a composition comprising a suspension of finely-divided magnetic particles in a liquid medium which is capable of penetrating through said anti-halation layer and being cured to an alkali-insoluble cross-linked polymeric matrix which surrounds said magnetic particles and bonds to said support, said liquid medium consisting essentially of (a) an acrylated epoxy resin of the formula: ##STR9## wherein n has a value of about 13, (b) butyl acrylate (c) neopentylglycol diacrylate (d) methyl ethyl ketone (e) acetone (f) methanol, and (g) 2,4-dichlorobenzoyl peroxide and (2) curing said stripe to convert said liquid medium to an alkali-insoluble cross-linked polymeric matrix which surrounds said magnetic particles and bonds to said support, thereby forming a magnetic stripe which is composite with said anti-halation layer and resistant to removal by alkaline photographic processing solutions.
Claim 15
Independent Claim
207 words
A method of forming a magnetic stripe on a photographic element comprising a support having thereon an anti-halation layer which contains an alkali-soluble binder that renders such layer removable by an alkaline photographic processing solution, said magnetic stripe being composite with said anti-halation layer and bonded to said support so as to resist removal by an alkaline photographic processing solution, which method comprises the steps of: (1) depositing on the anti-halation layer of said element a stripe of a composition comprising a suspension of finely-divided magnetic particles in a liquid medium which is capable of penetrating through said anti-halation layer and being cured to an alkali-insoluble cross-linked polymeric matrix which surrounds said magnetic particles and bonds to said support, said liquid medium consisting essentially of (a) an acrylated epoxy resin of the formula: ##STR9## wherein n has a value of about 13, (b) butyl acrylate (c) neopentylglycol diacrylate (d) methyl ethyl ketone (e) acetone (f) methanol, and (g) 2,4-dichlorobenzoyl peroxide and (2) curing said stripe to convert said liquid medium to an alkali-insoluble cross-linked polymeric matrix which surrounds said magnetic particles and bonds to said support, thereby forming a magnetic stripe which is composite with said anti-halation layer and resistant to removal by alkaline photographic processing solutions.
Claim 16
Independent Claim
204 words
A method of forming a magnetic stripe on a photographic element comprising a support having thereon an anti-halation layer which contains an alkali-soluble binder that renders such layer removable by an alkaline photographic processing solution, said magnetic stripe being composite with said anti-halation layer and bonded to said support so as to resist removal by an alkaline photographic processing solution, which method comprises the steps of: (1) depositing on the anti-halation layer of said element a stripe of a composition comprising a suspension of finely-divided magnetic particles in a liquid medium which is capable of penetrating through said anti-halation layer and being cured to an alkali-insoluble cross-linked polymeric matrix which surrounds said magnetic particles and bonds to said support, said liquid medium consisting essentially of (a) an acrylated epoxy resin of the formula: ##STR10## wherein n has a value of about 13, (b) 1,6-hexanediol diacrylate (c) cellulose nitrate (d) ethyl acetate (e) methanol, and (f) 2,4-dichlorobenzoyl peroxide and (2) curing said stripe to convert said liquid medium to an alkali-insoluble cross-linked polymeric matrix which surrounds said magnetic particles and bonds to said support, thereby forming a magnetic stripe which is composite with said anti-halation layer and resistant to removal by alkaline photographic processing solutions.
Claim 17
Independent Claim
204 words
A method of forming a magnetic stripe on a photographic element comprising a support having thereon an anti-halation layer which contains an alkali-soluble binder that renders such layer removable by an alkaline photographic processing solution, said magnetic stripe being composite with said anti-halation layer and bonded to said support so as to resist removal by an alkaline photographic processing solution, which method comprises the steps of: (1) depositing on the anti-halation layer of said element a stripe of a composition comprising a suspension of finely-divided magnetic particles in a liquid medium which is capable of penetrating through said anti-halation layer and being cured to an alkali-insoluble cross-linked polymeric matrix which surrounds said magnetic particles and bonds to said support, said liquid medium consisting essentially of (a) an acrylated epoxy resin of the formula: ##STR10## wherein n has a value of about 13, (b) 1,6-hexanediol diacrylate (c) cellulose nitrate (d) ethyl acetate (e) methanol, and (f) 2,4-dichlorobenzoyl peroxide and (2) curing said stripe to convert said liquid medium to an alkali-insoluble cross-linked polymeric matrix which surrounds said magnetic particles and bonds to said support, thereby forming a magnetic stripe which is composite with said anti-halation layer and resistant to removal by alkaline photographic processing solutions.
Claim 18
Dependent Claim
191 words
A photographic element comprising a support, an anti-halation layer on said support which contains an alkali-soluble binder that renders such layer removable by an alkaline photographic processing solution, and a magnetic stripe which is composite with said anti-halation layer and bonded to said support so as to resist removal by an alkaline photographic processing solution, said magnetic stripe having been formed by: (1) depositing on the anti-halation layer of said element a stripe of a composition comprising a suspension of finely-divided magnetic particles in a liquid medium which is capable of penetrating through said anti-halation layer and being cured to an alkali-insoluble cross-linked polymeric matrix which surrounds said magnetic particles and bonds to said support, said liquid medium consisting essentially of (a) an acrylated epoxy resin, (b) a polymerizable acrylic monomer, and (c) an organic solvent that is capable of solubilizing said anti-halation layer, and (2) curing said stripe to convert said liquid medium to an alkali-insoluble cross-linked polymeric matrix which surrounds said magnetic particles and bonds to said support, thereby forming a magnetic stripe which is composite with said anti-halation layer and resistant to removal by alkaline photographic processing solutions.
Claim 19
Dependent Claim
191 words
A photographic element comprising a support, an anti-halation layer on said support which contains an alkali-soluble binder that renders such layer removable by an alkaline photographic processing solution, and a magnetic stripe which is composite with said anti-halation layer and bonded to said support so as to resist removal by an alkaline photographic processing solution, said magnetic stripe having been formed by: (1) depositing on the anti-halation layer of said element a stripe of a composition comprising a suspension of finely-divided magnetic particles in a liquid medium which is capable of penetrating through said anti-halation layer and being cured to an alkali-insoluble cross-linked polymeric matrix which surrounds said magnetic particles and bonds to said support, said liquid medium consisting essentially of (a) an acrylated epoxy resin, (b) a polymerizable acrylic monomer, and (c) an organic solvent that is capable of solubilizing said anti-halation layer, and (2) curing said stripe to convert said liquid medium to an alkali-insoluble cross-linked polymeric matrix which surrounds said magnetic particles and bonds to said support, thereby forming a magnetic stripe which is composite with said anti-halation layer and resistant to removal by alkaline photographic processing solutions.
Claim 20
Dependent Claim
33 words
A photographic element as claimed in claim 14 wherein said acrylated epoxy resin has the formula: ##STR11## wherein R is a hydrogen atom or a methyl group and n is 1 to 20.
Claim 21
Dependent Claim
17 words
A photographic element as claimed in claim 14 wherein said polymerizable acrylic monomer is a difunctional monomer.
Claim 22
Dependent Claim
88 words
A photographic element as claimed in claim 14 wherein said polymerizable acrylic monomer has the formula: ##STR12## wherein each R 1 is independently selected from the group consisting of a hydrogen atom and an alkyl group of 1 to 2 carbon atoms, and each R 2 is independently selected from the group consisting of an alkyl group of 1 to 6 carbon atoms and a radical of the formula: ##STR13## in which R 3 is a hydrogen atom or an alkyl group of 1 to 2 carbon atoms.
Claim 23
Dependent Claim
16 words
A photographic element as claimed in claim 14 wherein said polymerizable acrylic monomer is neopentylglycol diacrylate.
Claim 24
Dependent Claim
19 words
A photographic element as claimed in claim 14 wherein said polymerizable acrylic monomer comprises butyl acrylate and neopentylglycol diacrylate.
Claim 25
Dependent Claim
16 words
A photographic element as claimed in claim 14 wherein said polymerizable acrylic monomer is 1,6-hexanediol diacrylate.
Claim 26
Dependent Claim
30 words
A photographic element as claimed in claim 14 wherein said organic solvent comprises a lower aliphatic alcohol and a member selected from the group consisting of ketones and organic esters.
Claim 27
Dependent Claim
16 words
A photographic element as claimed in claim 14 wherein said organic solvent comprises methanol and acetone.
Claim 28
Dependent Claim
17 words
A photographic element as claimed in claim 14 wherein said organic solvent comprises methanol and ethyl acetate.
Claim 29
Dependent Claim
14 words
A photographic element as claimed in claim 14 wherein said support is cellulose triacetate.
Claim 30
Dependent Claim
16 words
A photographic element as claimed in claim 14 wherein said alkali-soluble binder is cellulose acetate phthalate.
Claim 31
Dependent Claim
137 words
A coating composition which is useful for forming a magnetic stripe on a photographic element comprising a support and an anti-halation layer, said anti-halation layer containing an alkali-soluble binder that renders said layer removable by an alkaline photographic processing solution and said magnetic stripe being composite with said anti-halation layer and bonded to said support so as to resist removal by an alkaline photographic processing solution, said coating composition comprising a suspension of finely-divided magnetic particles in a liquid medium which is capable of penetrating through said anti-halation layer and being cured to an alkali-insoluble cross-linked polymeric matrix which surrounds said magnetic particles and bonds to said support, said liquid medium consisting essentially of (a) an acrylated epoxy resin, (b) a polymerizable acrylic monomer, and (c) an organic solvent that is capable of solubilizing said anti-halation layer.
Claim 32
Dependent Claim
137 words
A coating composition which is useful for forming a magnetic stripe on a photographic element comprising a support and an anti-halation layer, said anti-halation layer containing an alkali-soluble binder that renders said layer removable by an alkaline photographic processing solution and said magnetic stripe being composite with said anti-halation layer and bonded to said support so as to resist removal by an alkaline photographic processing solution, said coating composition comprising a suspension of finely-divided magnetic particles in a liquid medium which is capable of penetrating through said anti-halation layer and being cured to an alkali-insoluble cross-linked polymeric matrix which surrounds said magnetic particles and bonds to said support, said liquid medium consisting essentially of (a) an acrylated epoxy resin, (b) a polymerizable acrylic monomer, and (c) an organic solvent that is capable of solubilizing said anti-halation layer.
Claim 33
Dependent Claim
33 words
A coating composition as claimed in claim 26 wherein said acrylated epoxy resin has the formula: ##STR14## wherein R is a hydrogen atom or a methyl group and n is 1 to 20.
Claim 34
Dependent Claim
17 words
A coating composition as claimed in claim 26 wherein said polymerizable acrylic monomer is a difunctional monomer.
Claim 35
Dependent Claim
88 words
A coating composition as claimed in claim 26 wherein said polymerizable acrylic monomer has the formula: ##STR15## wherein each R 1 is independently selected from the group consisting of a hydrogen atom and an alkyl group of 1 to 2 carbon atoms, and each R 2 is independently selected from the group consisting of an alkyl group of 1 to 6 carbon atoms and a radical of the formula: ##STR16## in which R 3 is a hydrogen atom or an alkyl group of 1 to 2 carbon atoms.
Claim 36
Dependent Claim
16 words
A coating composition as claimed in claim 26 wherein said polymerizable acrylic monomer is neopentylglycol diacrylate.
Claim 37
Dependent Claim
19 words
A coating composition as claimed in claim 26 wherein said polymerizable acrylic monomer comprises butyl acrylate and neopentylglycol diacrylate.
Claim 38
Dependent Claim
16 words
A coating composition as claimed in claim 26 wherein said polymerizable acrylic monomer is 1,6-hexanediol diacrylate.
Claim 39
Dependent Claim
30 words
A coating composition as claimed in claim 26 wherein said organic solvent comprises a lower aliphatic alcohol and a member selected from the group consisting of ketones and organic esters.
Claim 40
Dependent Claim
16 words
A coating composition as claimed in claim 26 wherein said organic solvent comprises methanol and acetone.
Claim 41
Dependent Claim
17 words
A coating composition as claimed in claim 26 wherein said organic solvent comprises methanol and ethyl acetate.
References Cited (Backward Citations)
US3704167A
Cited
US4072592A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-07-26 | 1986-01-25 | 1986-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-07-26 | 1990-01-25 | 1990-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-07-26 | 1994-01-25 | 1994-07-27 | $7700.00 | Window Closed / Lapsed |