| Patent Number |
Title Of Patent |
Date Issued |
| 5186477 |
Drum chucking device |
February 16, 1993 |
| Disclosed is a chucking device for chucking a drum to keep it vertical while the drum is immersed in a coating liquid to be coated with the coating liquid. The chucking device comprises upper and lower pressure members having tapered peripheral surfaces at their ends facing each othe |
| 5153088 |
Electrophotosensitive material with x-type metal free phthalocyanine and perylene compound |
October 6, 1992 |
| This invention provides an electrophotosensitive material comprising a conductive substrate and a photosensitive layer formed thereon, the photosensitive layer includes a perylene compound (I) and an X-type metal-free phtalocyanine as a charge-generating ingredient and a diamine deri |
| 5087544 |
Perylene electrophotosensitive material with m-phenylenediamine |
February 11, 1992 |
| The present invention provides an electrophotosensitive material comprising a conductive substrate, and a photosensitive layer provided on the conductive substrate and containing a m-phenylenediamine compound represented by the general formula [I]: ##STR1## (wherein R.sup.1, R.su |
| 5059503 |
Electrophotosensitive material with combination of charge transfer materials |
October 22, 1991 |
| The present invention provides an electrophotosensitive material containing the diamine derivative represented by the following general formula (I) and at least one selected from the group consisting of the hydrazone compound, fluorene compound and m-phenylenediamine compound. ##STR1 |
| 4600668 |
Electrophotographic process |
July 15, 1986 |
| In the electrophotographic process in which an image is formed by performing imagewise light exposure, toner development, toner image transfer and cleaning after charging a photoconductive photosensitive layer by direct current corona discharge, an organic photoconductive photosensit |
| 4574114 |
Photosensitive composition for electrophotography having polyvinyl carbazole and silicone oil |
March 4, 1986 |
| A photosensitive composition for electrophotography comprising polyvinyl carbazole, a charge-generating organic pigment, and as a sensitizing agent a silicone oil, thereby enhancing the sensitivity of the resulting photosensitive layer and improving the aging characteristic thereof. |
| 4447514 |
Organic photosensitive material for electrophotography comprising polyvinylcarbazole and pyrene |
May 8, 1984 |
| Disclosed is an organic photosensitive material for electrophotography comprising a charge-transporting medium composed mainly of polyvinyl carbazole and a perylene type pigment as a charge-generating pigment dispersed in said charge-transporting medium, wherein 1 to 30 parts by weig |
| 4413047 |
Cadmium photoconductor with (dialkylpyrophosphato) organic titanate additive |
November 1, 1983 |
| Disclosed is a photosensitive material for electrophotography comprising a conductive substrate and a layer of a composition comprising a dispersion of a photoconductive pigment in a binder resin, which is formed on the conductive substrate, wherein a (dialkypyrophosphato) organic titana |
| 4260238 |
Transfer type electrostatic copying apparatus |
April 7, 1981 |
| A transfer type electrostatic copying apparatus employs a photosensitive member of organic photoconductive material and one-component developing toner. There is provided a charge eraser lamp for erasing or removing a residual charge remaining on the surface of the photosensitive member |
| 4226928 |
Laminated photosensitive material for electrophotography |
October 7, 1980 |
| In a laminated photosensitive material for electrophotography, an intermediate layer comprising, incorporated in a binder, phthalocyanine or a phthalocyanine derivative and a polycyclic aromatic nitro compound at a specific ratio is formed on an electrically conductive substrate, and a |
| 4214907 |
Photosensitive material for electrophotography having a polyvinyl carbazole derivative, phthaloc |
July 29, 1980 |
| In a photosensitive material for electrophotography, an intermediate layer comprising an organic polymeric photoconductor and a polycyclic aromatic nitro compound at a specific ratio is formed on an electrically conductive substrate, and a top layer comprising, incorporated in a binder, |
