Photo-conductive composition and CRT bulb having photo-conductiv

Details Photo-conductive composition and CRT bulb having photo-conductiv Photo-conductive composition and CRT bulb having photo-conductiv

1996-08-14

1998-05-12

Martin, Roland

Radiation imagery chemistry: process, composition, or product th

Producing cathode-ray tube or element thereof

Using specified radiation-sensitive composition other than a...

430 83, G03C 500, G03G 509

Patent

active

057502960

ABSTRACT:
A photo-conductive composition and CRT bulb having a photo-conductive layer formed of the same are provided. The photo-conductive composition comprises 5-15 wt % of a charge transmitting substance, represented by the structural formula (1); ##STR1## where R.sub.1 is selected from the group consisting of a phenyl group substituted by one to three substituents selected from the group consisting of amino, dialkylamino, C.sub.1 -C.sub.6 alkoxy, C.sub.1 -C.sub.6 alkyl and cyano groups; 9-alkyl carbazole group; naphthyl group, and R.sub.2 and R.sub.3 are same or different independently from each other, each being selected from the group consisting of hydrogen and C.sub.1 -C.sub.6 alkyl, phenyl and naphthyl groups, and n is between 0 and 2; 1-15 wt % of a charge generating substance which absorbs light in the wavelength range of an ultraviolet region; 70-94 wt % of a binder; and 0.05-1 wt % of a surfactant. The photo-conductive composition exhibits excellent sintering characteristic and can form a photoconductive layer having excellent coating properties, durability and luminance.

REFERENCES:
patent: 4362798 (1982-12-01), Anderson et al.
patent: 4423129 (1983-12-01), Takasu et al.
patent: 4465857 (1984-08-01), Neumann et al.
patent: 4535043 (1985-08-01), Ishikawa et al.
patent: 4784929 (1988-11-01), Ueda et al.
patent: 4865934 (1989-09-01), Ueda et al.

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