The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 26, 1995
Filed:
Feb. 09, 1993
Industrial Technology Research Institute, Chutung, TW;
Abstract
Organic photoreceptors of the functionally separated laminated type containing a hydrazone compound in the charge transport layer thereof which provides low crystallinity and improved sensitivity, durability, and reproducibility. The hydrazone compound disclosed in the present invention is presented by the following general formula (I): ##STR1## wherein R.sub.1 represents a substituted or unsubstituted C.sub.1 -C.sub.4 alkyl group, R.sub.2 represents a hydrogen atom, or an alkyl or alkoxy group; n is an integer of either 1 or 2; R.sub.3 and R.sub.4 each independently represents a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group or a substituted or unsubstituted aralkyl group; or alternatively R.sub.3 and R.sub.4 form a substituted or unsubstituted aromatic heterocyclic ring residue cojointly with the nitrogen atom to which they are bonded.