Process for producing hydroxygallium phthalocyanine

Assignee: Fujifilm Business Innovation Corp

•

Filing: 1993-08-23

•

Granted: —

•

Expires: 2013-08-23

📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A halogen-containing hydroxygallium phthalocyanine crystal showing intense diffraction peaks at Bragg angles (2ϑ±0.2°) of (1) 7.7°, 16.5°, 25.1° and 26.6°; (2) 7.9°, 16.5°, 24.4°, and 27.6°; (3) 7.0°, 7.5°, 10.5°, 11.7°, 12.7°, 17.3°, 18.1°, 24.5°, 26.2°, and 27.1°; 4) 7.5°, 9.9°, 12.5°, 16.3°, 18.6°, 25.1°, and 28.3°; or (5) 6.8°, 12.8°, 15.8°, and 26.0° and an electrophotographic photoreceptor containing the halogen-containing hydroxygallium phthalocyanine crystal as a charge generating material are disclosed. Hydroxygallium phthalocyanine crystals are produced by reacting a gallium trihalide with phthalonitrile or diiminoisoindoline in a halogenated aromatic hydrocarbon solvent, treating the resulting halogenated gallium phthalocyanine with an amide solvent, and hydrolyzing the halogenated gallium phthalocyanine. The photoreceptor exhibits stabilized electrophotographic characteristics.

Inventors

👤 Katsumi C/O Fuji Xerox Co. Ltd. Nukada
👤 Katsumi C/O Fuji Xerox Co. Ltd. Daimon
👤 Yasuo C/O Fuji Xerox Co. Ltd. Sakaguchi
👤 Masakazu c/o Fuji Xerox Co. Ltd. IIjima

Bibliographic Details

Application Number —

Jurisdiction EP

Data Source google_patents

Last Synchronized 2026-11-09 05:00

CPC Classifications

C; C09; C09B; C09B67/00; C09B67/0025; C09B67/0026; C09B67/0001; C09B67/0014; C09B67/0016; G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0664; G03G5/0696

Claims Analysis

Total Claims: 5

Claim 1

Independent Claim 54 words

A halogen-containing hydroxygallium phthalocyanine crystal showing intense diffraction peaks at Bragg angles (2ϑ±0.2°) of (1) 7.7°, 16.5°, 25.1° and 26.6°; (2) 7.9°, 16.5°, 24.4°, and 27.6°; (3) 7.0°, 7.5°, 10.5°, 11.7°, 12.7°, 17.3°, 18.1°, 24.5°, 26.2°, and 27.1°; 4) 7.5°, 9.9°, 12.5°, 16.3°, 18.6°, 25.1°, and 28.3°; or (5) 6.8°, 12.8°, 15.8°, and 26.0°.

Claim 2

Dependent Claim 62 words

An electrophotographic photoreceptor comprising a photosensitive layer containing a halogen-containing hydroxygallium phthalocyanine crystal showing intense diffraction peaks at Bragg angles (2ϑ±0.2°) of (1) 7.7°, 16.5°, 25.1° and 26.6°; (2) 7.9°, 16.5°, 24.4°, and 27.6°; (3) 7.0°, 7.5°, 10.5°, 11.7°, 12.7°, 17.3°, 18.1°, 24.5°, 26.2°, and 27.1°; 4) 7.5°, 9.9°, 12.5°, 16.3°, 18.6°, 25.1°, and 28.3°; or (5) 6.8°, 12.8°, 15.8°, and 26.0°.

Claim 3

Dependent Claim 29 words

A process for producing a hydroxygallium phthalocyanine crystal comprising reacting a gallium trihalide with phthalonitrile or diiminoisoindoline in an aromatic hydrocarbon solvent and hydrolyzing the resulting halogenated gallium phthalocyanine.

Claim 4

Dependent Claim 31 words

A process for producing a hydroxygallium phthalocyanine crystal as claimed in Claim 3, wherein said aromatic hydrocarbon solvent is a halogenated hydrocarbon having a boiling point of not less than 150°C.

Claim 5

Dependent Claim 20 words

A process for producing a hydroxygallium phthalocyanine crystal as claimed in Claim 3, wherein said gallium trihalide is gallium trichloride.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Maintenance schedule is calculated for granted US utility patents.

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag

Select Category

Notes (Optional)