Pyranthrone type compound, organic photoreceptor, image forming method and image forming apparatus
AssigneeKonica Minolta Business Technologies, Inc.
InventorsToyoko SHIBATA, Tomoko SAKIMURA
Life of this patent
Estimating the term…
Abstract
An organic photoreceptor is described. The photosensitive layer contains a pyranthrone compound represented by Formula 1 which has been subjected to purification processing so as to have a mass reduction ratio D400/450 between 400° C. and 450° C. of not more than 2.0% in a thermogravimetric analysis; D400/450={(G400−G450)/Gi}×100 wherein Gi is a mass at 25° C., and G400 and G450 are each mass at 400° C. and 450° C., respectively, wherein R1 through R14 are each a hydrogen atom, an alkyl group, an alkoxy group, an aryl group, a halogen atom, a cyano group or a nitro group. The image forming method using the photoreceptor, and the pyranthrone compound are also disclosed.
Claims11
An organic photoreceptor having a photosensitive layer provided on an electroconductive substrate wherein the photosensitive layer contains a pyranthrone compound represented by Formula 1 which has been subjected to purification processing so as to have a mass reduction ratio D400/450 between 400° C. and 450° C. of not more than 2.0% in a thermogravimetric analysis;
- D400/450={(G400−G450)/Gi}×100
- wherein Gi is a mass at 25° C., and G400 and G450 are each mass at 400° C. and 450° C. of the pyranthrone compound in the thermogravimetric analysis, respectively,
- wherein R1 through R14 are each a hydrogen atom, an alkyl group, an alkoxy group, an aryl group, a halogen atom, a cyano group or a nitro group.
A pyranthrone compound represented by Formula 1 which has been subjected to purification processing so as to have a mass reduction ratio D400/450 between 400° C. and 450° C. of not more than 2.0% in a thermogravimetric analysis;
- D400/450={(G400−G450)/Gi}×100
- wherein Gi is a mass at 25° C. and G400 and G450 are each mass at 400° C. and 450° C. of the pyranthrone compound in the thermogravimetric analysis, respectively,
- wherein R1 and R14 are each a hydrogen atom, an alkyl group, and alkoxy group, an aryl group, a halogen atom, a cyano group or a nitro group.
Dependencies are inferred from the claim text.