公开(公告)号：US20190235399A1

公开(公告)日：2019-08-01

申请号：US16258790

申请日：2019-01-28

Applicant: KYOCERA Document Solutions Inc.

Inventor： Yuko IWASHITA ,  Kazunari HAMASAKI ,  Kazutaka SUGIMOTO

IPC: G03G5/047 ,  G03G5/06 ,  G03G5/05

CPC classification number: G03G5/047 ,  G03G5/0564 ,  G03G5/0592 ,  G03G5/0596 ,  G03G5/0635 ,  G03G5/0675 ,  G03G5/0696

Abstract: An electrophotographic photosensitive member includes a conductive substrate and a single-layer photosensitive layer. The photosensitive layer contains a charge generating material, a hole transport material, an electron transport material, an additive, and a binder resin. An optical response time is in a range from 0.05 milliseconds to 0.85 milliseconds. The optical response time is a time from irradiation of a surface of the photosensitive layer charged to +800 V with pulse light having a wavelength of 780 nm to surface potential decay of the photosensitive layer from +800 V to +400 V. An optical intensity of the pulse light is set so that the surface potential of the photosensitive layer becomes +200 V from +800 V after 400 milliseconds from pulse light irradiation of the surface of the photosensitive layer charged to the +800 V. The additive includes either of both an ultraviolet absorbing agent and an antioxidant.

公开(公告)号：US20160223924A1

公开(公告)日：2016-08-04

申请号：US15010386

申请日：2016-01-29

Applicant: KYOCERA Document Solutions Inc.

Inventor： Yuko IWASHITA ,  Kazutaka SUGIMOTO ,  Takafumi MATSUMOTO

IPC: G03G15/00

CPC classification number: G03G5/0614 ,  G03G5/0696

Abstract: An electrophotographic photosensitive member includes a photosensitive layer. The photosensitive layer contains a charge generating material and a hole transport material. Titanyl phthalocyanine contained as the charge generating material exhibits a main peak at a Bragg angle 2θ±0.2°=27.2° in a CuKα characteristic X-ray diffraction spectrum and satisfies either (B) or (C), shown below, in a differential scanning calorimetry spectrum. (B) A peak is not present in a range from 50° C. to 400° C., other than a peak resulting from vaporization of adsorbed water. (C) A peak is not present in a range from 50° C. to 270° C., other than a peak resulting from vaporization of adsorbed water, and a peak is present in a range from 270° C. to 400° C. The hole transport material is a compound represented by general formula (1).

Abstract translation: 电子照相感光构件包括感光层。 感光层含有电荷产生材料和空穴传输材料。 在CuKα特征X射线衍射光谱中，作为电荷产生材料含有的酞菁酞菁在布拉格角为2θ±0.2°= 27.2°时呈现主峰，并且在差示扫描中满足下述（B）或（C） 量热谱 （B）除了由吸附水蒸发得到的峰值以外，峰值不存在于50℃〜400℃的范围内。 （C）除了吸附水的蒸发产生的峰以外，峰不在50℃〜270℃的范围内，峰值存在于270〜400℃的范围内 空穴传输材料是由通式（1）表示的化合物。