US 7,321,460 B2
Particle for display device, method for manufacturing particle for display device, image display medium and image forming apparatus
Satoshi Hiraoka, Minamiashigara (Japan); Hidehiko Soyama, Minamiashigara (Japan); and Yasuo Yamamoto, Minamiashigara (Japan)
Assigned to Fuji Xerox Co., Ltd., Tokyo (Japan)
Filed on Sep. 15, 2004, as Appl. No. 10/940,968.
Claims priority of application No. 2004-023750 (JP), filed on Jan. 30, 2004.
Prior Publication US 2005/0168800 A1, Aug. 04, 2005
Int. Cl. G02B 26/00 (2006.01); G09G 3/34 (2006.01); G03G 17/04 (2006.01)
U.S. Cl. 359—296  [345/107; 430/32] 8 Claims
OG exemplary drawing
 
1. Particles for forming an image in a display device comprising a positively or negatively chargeable property and color, wherein an abundance ratio of particles within the display device with a major axis to minor axis length ratio of approximately 1.2 or greater is approximately 5% or less by number, and further comprising, as the white colorant, at least two types of titanium oxide having different average particle diameters.