它适用于高分辨率和正充电型，高速的电子照相设备，该设备是极好的操作稳定性，图像存储器和，没有图像缺陷的出现归因于由于接触构件或油或皮脂，稳定污染产生裂纹 高的图像质量能够得到Te，且高灵敏度和快速响应高度耐用电子照相感光体，其目的在于提供使用其的电子照相设备。 在导电载体上，至少一个电荷产生材料，空穴传输材料，电子传输材料和包含含有粘结剂树脂的感光层的电子照相感光体，是最外面的层，电荷产生材料，空穴传输材料 电子传输材料，粘合剂树脂，以及具有两个或分子中更多的自由基聚合的双键，长链烷基或在分子中具有脂环族基团和至少一种的单体的自由基聚合性双 具有结合的单体，在含有包含高度支化的聚合物的聚合引发剂的存在下聚合。

Is applied to an electrophotographic apparatus of high resolution and high speed of the positive charging type, it is excellent in operation stability, image memory and, without the occurrence of image defects due to cracks occurring in contamination by the contact member or fat or sebum, stable high image quality can be obtained on, and a high sensitivity and fast response high durability electrophotographic photosensitive member, and aims to provide an electrophotographic apparatus using the same.
On a conductive support, at least a charge generating material, hole transport material, the electron transporting material and an electrophotographic photosensitive member comprising a photosensitive layer containing a binder resin, the outermost layer, a charge generating material, hole transport material , an electron-transporting material, binder resin, and a monomer having two or more radical-polymerizable double bond in the molecule, a long chain alkyl group or an alicyclic group in the molecule and at least one radically polymerizable double a monomer having an bond, is polymerized in the presence of a polymerization initiator containing a highly branched polymer comprising.