Inorganic particle, electrostatic charge image developing toner, electrostatic charge image developer, developer cartridge, process cartridge, and image forming apparatus

摘要

An irregular shape inorganic particle satisfies the following formulas (1) and (2),
1/17≦A/B≦ 1/13  (1)1.2≦C/D≦1.5  (2)
wherein A represents a distance between the center of a circumscribed rectangle, in which lines sandwiching a projected image and being parallel to an absolute maximum length of the projected image of inorganic fine particles are long sides and lines sandwiching the projected image and being perpendicular to the absolute maximum length are short sides, and the center of gravity of the projected image, B represents the absolute maximum length, C represents a length of a long side of the circumscribed rectangle, and D represents a length of a short side of the circumscribed rectangle.

主权项

1. An inorganic particle comprising:
inorganic particles having irregular shape and satisfying the following formulas (1) and (2),
1/17≦A/B≦ 1/13  (1)1.2≦C/D≦1.5  (2) wherein A represents a distance between the center of a circumscribed rectangle, in which lines sandwiching a projected image and being parallel to an absolute maximum length of the projected image of inorganic fine particles are long sides and lines sandwiching the projected image and being perpendicular to the absolute maximum length are short sides, and the center of gravity of the projected image, B represents the absolute maximum length, C represents a length of a long side of the circumscribed rectangle, and D represents a length of a short side of the circumscribed rectangle.