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:
Dec. 13, 1994
Filed:
Nov. 06, 1992
Abstract
A converting device, and recording and detecting methods using the same, wherein the converting device includes a converting layer containing a variable electroconductivity material exhibiting electronic charge conduction. The variable electroconductivity material includes: (a) an electroconductivity variation imparting agent which changes its ionic structure when exposed to one of light and heat energy, between nonionic and ionic structures, the electroconductivity variation imparting agent including at least one component selected from spiropyrane compounds, diazonium compounds, derivatives thereof, a mixture of a leuco dye and a halide compound, and an ionic dye; and (b) a charge transport substance, the electroconductivity of which varies in relation to the ionic structural change of the electroconductivity variation imparting agent, the charge transport substance including at least one component selected from an organic or inorganic charge transport material, a .pi.-electron conjugated polymer, and a charge-transfer complex compound; and a pair of electrodes formed on opposite major surfaces of said converting layer.