Novel phthalocyanine pigments and electrophotographic uses thereof

Claim 2

An electrically photosensitive material comprising an electrically insulating carrier and an electrically photosensitive phthalocyanine pigment of the structure: ##STR21## wherein: R 1 represents ##STR22## n represents 1, 2, 3 or any combination of 1, 2 and 3 R 2 , R 3 , R 4 and R 5 represent alkyl, alkylaryl, alkoxy, alkoxyaryl, cycloalkyl, aryl, aralkyl or aryloxy; R 6 represents hydrogen or chlorine and AlPc represents ##STR23##

Claim 3

A material as in claim 1, wherein said electrically photosensitive phthalocyanine pigment has a structure according to Formula I, wherein R 2 , R 3 , R 4 and R 5 represent phenyl, methoxyphenyl, methylphenyl, benzyl, cyclohexyl or methyl.

Claim 4

A material as in claim 1, wherein said electrically photosensitive phthalocyanine pigment has the structure: ##STR24##

Claim 5

A material as in claims 1, 2 or 3, which also includes a charge control agent.

Claim 6

A photoelectrophoretic image recording method comprising the steps of: (a) placing an imaging element comprising a layer of an electrically photosensitive material in an electrical field; and (b) exposing said element to an image pattern of electromagnetic radiation to which said layer is photosensitive to form a record of the image pattern of electromagnetic radiation in said layer; wherein said layer comprises an electrically photosensitive phthalocyanine pigment having the structure: ##STR25## wherein: R 1 represents ##STR26## n represents 1, 2, 3 or any combination of 1, 2 and 3 R 2 , R 3 , R 4 and R 5 represent alkyl, alkylaryl, alkoxy, alkoxyaryl, cycloalkyl, aryl, aralkyl or aryloxy; R 6 represents hydrogen or chlorine and AlPc represents ##STR27##

Claim 7

A photoelectrophoretic image recording method comprising the steps of: (a) placing an imaging element comprising a layer of an electrically photosensitive material in an electrical field; and (b) exposing said element to an image pattern of electromagnetic radiation to which said layer is photosensitive to form a record of the image pattern of electromagnetic radiation in said layer; wherein said layer comprises an electrically photosensitive phthalocyanine pigment having the structure: ##STR25## wherein: R 1 represents ##STR26## n represents 1, 2, 3 or any combination of 1, 2 and 3 R 2 , R 3 , R 4 and R 5 represent alkyl, alkylaryl, alkoxy, alkoxyaryl, cycloalkyl, aryl, aralkyl or aryloxy; R 6 represents hydrogen or chlorine and AlPc represents ##STR27##

Claim 8

A method as in claim 5, further comprising the steps of: (a) placing said element between two electrodes during the exposure and application of the electric field and then (b) separating the electrodes thereby forming a visual record of the image pattern of electromagnetic radiation on at least one of the electrodes.

Claim 9

A method as in claim 5, further comprising the steps of: (a) placing said layer between two support sheets to form the imaging element; (b) positioning the element between two electrodes during the exposure and application of the electric field; and (c) separating the two support sheets thereby forming a visual record of the image pattern of electromagnetic record on the support sheets.

Claim 10

A method as in claim 5, further comprising the step of developing a visual record of the image pattern of electromagnetic radiation by removing the exposed or unexposed portion of said layer.

Claim 12

An imaging element comprising a layer of an electrically photosensitive material which comprises an electrically photosensitive phthalocyanine pigment of the structure: ##STR29## wherein: R 1 represents ##STR30## n represents 1, 2, 3 or any combination of 1, 2 and 3 R 2 , R 3 , R 4 and R 5 represent alkyl, alkylaryl, alkoxy, alkoxyaryl, cycloalkyl, aryl, aralkyl or aryloxy; R 6 represents hydrogen or chlorine and AlPc represents ##STR31##

Claim 13

An imaging element comprising a layer of an electrically photosensitive material which comprises an electrically photosensitive phthalocyanine pigment of the structure: ##STR29## wherein: R 1 represents ##STR30## n represents 1, 2, 3 or any combination of 1, 2 and 3 R 2 , R 3 , R 4 and R 5 represent alkyl, alkylaryl, alkoxy, alkoxyaryl, cycloalkyl, aryl, aralkyl or aryloxy; R 6 represents hydrogen or chlorine and AlPc represents ##STR31##

Claim 14

An element as in claim 10 wherein the layer is carried on a support.

Claim 15

An element as in claim 10 wherein the layer is situated between two support sheets.

Claim 16

An element as in claim 10 wherein at least one support sheet is transparent to activating electromagnetic radiation.

Claim 17

An element as in claims 12 and 13, wherein said electrically photosensitive phthalocyanine pigment has the structure: ##STR32##

Claim 18

An electrographic developer composition comprising a toner which contains a resin and a phthalocyanine pigment having the structure: ##STR33## wherein: R 1 represents ##STR34## n represents 1, 2, 3 or any combination of 1, 2 and 3 R 2 , R 3 , R 4 and R 5 represent akyl, alkylaryl, alkoxy, alkoxyaryl, cycloalkyl, aryl, aralkyl or aryloxy; R 6 represents hydrogen or chlorine and AlPc represents ##STR35##

Claim 19

An electrographic developer composition comprising a toner which contains a resin and a phthalocyanine pigment having the structure: ##STR33## wherein: R 1 represents ##STR34## n represents 1, 2, 3 or any combination of 1, 2 and 3 R 2 , R 3 , R 4 and R 5 represent akyl, alkylaryl, alkoxy, alkoxyaryl, cycloalkyl, aryl, aralkyl or aryloxy; R 6 represents hydrogen or chlorine and AlPc represents ##STR35##

Claim 20

A developer composition as in claim 15, wherein said pigment has a structure according to Formula I wherein R 2 , R 3 , R 4 and R 5 represent phenyl, methoxyphenyl, methylphenyl, benzyl, cyclohexyl or methyl.

Claim 21

A developer composition as in claim 15, wherein said pigment has the structure: ##STR36##

Claim 22

A developer composition as in claims 15, 16 or 17, which also includes a carrier.

Claim 23

In an electrographic process wherein a visible image is developed on a substrate by depositing toners on an electrostatic charge pattern on the substrate, the improvement wherein the toner comprises a phthalocyanine pigment having the structure: ##STR37## wherein: R 1 represents ##STR38## n represents 1, 2, 3 or any combination of 1, 2 and 3 R 2 , R 3 , R 4 and R 5 represent alkyl, alkylaryl, alkoxy, alkoxyaryl, cycloalkyl, aryl, aralkyl or aryloxy; R 6 represents hydrogen or chlorine and AlPc represents ##STR39##

Claim 24

In an electrographic process wherein a visible image is developed on a substrate by depositing toners on an electrostatic charge pattern on the substrate, the improvement wherein the toner comprises a phthalocyanine pigment having the structure: ##STR37## wherein: R 1 represents ##STR38## n represents 1, 2, 3 or any combination of 1, 2 and 3 R 2 , R 3 , R 4 and R 5 represent alkyl, alkylaryl, alkoxy, alkoxyaryl, cycloalkyl, aryl, aralkyl or aryloxy; R 6 represents hydrogen or chlorine and AlPc represents ##STR39##

Claim 25

A process as in claim 19, wherein said pigment has a structure according to Formula I wherein R 2 , R 3 , R 4 and R 5 represent phenyl, methoxyphenyl, methylphenyl, benzyl, cyclohexyl or methyl.

Claim 26

A process as in claim 19, wherein said pigment has the structure: ##STR40##

Claim 27

An image comprising an electrically photosensitive pigment having the structure: ##STR41## wherein: R 1 represents ##STR42## n represents 1, 2, 3 or any combination of 1, 2 and 3 R 2 , R 3 , R 4 and R 5 represent alkyl, alkylaryl, alkoxy, alkoxyaryl, cycloalkyl, aryl, aralkyl or aryloxy; R 6 represents hydrogen or chlorine and AlPc represents ##STR43##

Claim 28

An image comprising an electrically photosensitive pigment having the structure: ##STR41## wherein: R 1 represents ##STR42## n represents 1, 2, 3 or any combination of 1, 2 and 3 R 2 , R 3 , R 4 and R 5 represent alkyl, alkylaryl, alkoxy, alkoxyaryl, cycloalkyl, aryl, aralkyl or aryloxy; R 6 represents hydrogen or chlorine and AlPc represents ##STR43##