Charge acceptance memory effect was studied in the photoreceptor consist of organic photoconductor [(Poly-N-vinylcarbazole (PVK), Polyvinylcarbazole ethylacryrate (Poly-CEA))], memory materials such as Crystal Violet, Carbazole dye and polyester binder.
The optimum of dye concentration was about 0.1 mol%/photoconductor in monomer unit for the memory formation. And the sensitization of the memory effect by corona pre-charging was remarkable and the increase of its sensitivity was more than two orders ratio compared with only exposure.
By comparing the difference of memory behaviors between PVK and Poly-CEA, the doped dye seemed to become the memory center by light absorption.
It was found from the above experimental results that the large size of the counter anion of dye such as BF
4- and C10
4- gave remarkable effect to increase the memory sensitivity.
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