Particle for a display device, image display medium and image forming apparatus
AssigneeFuji Xerox Co., Ltd.
InventorsSatoshi Hiraoka, Hidehiko Soyama, Yasuo Yamamoto
Life of this patent
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Abstract
A particle for a display device having a positively or negatively chargeable property and a color, the particle for a display device comprising nitrogen atoms in an amount of 0.03 mmol/g to 0.2 mmol/g. This particle for a display device can avoid reduction in image density and density contrast even after repeated rewriting, and thus prevent decrease in uniformity of an image and unevenness in image from occurring.
Claims18
A particle for a display device having a positively or negatively chargeable property and a color, the particle comprising nitrogen atoms in an amount of 0.03 mmol/g to 0.2 mmol/g.
An image display medium, comprising:
- a pair of substrates facing each other;
- and
- a particle group composed of at least two or more types of particles sealed in a clearance between the pair of substrates, at least one type of the two or more types of particles having a positively chargeable property, at least another type of the two or more types of particles having a negatively chargeable property, and the positively and negatively chargeable particles, respectively, being of colors that are different from each other, wherein at least one type of the positively and negatively chargeable particles contains nitrogen atoms in an amount of 0.03 mmol/g to 0.2 mmol/g.
An image forming apparatus, comprising:
- an image forming medium on which an image is formed;
- and
- an electric field generating means;
- wherein the image forming medium includes:
- a pair of substrates facing each other;
- and
- a particle group composed of at least two or more types of particles sealed in a clearance between the pair of substrates, at least one type of the two or more types of particles having a positively chargeable property, at least another type of the two or more types of particles having a negatively chargeable property, the positively and negatively chargeable particles respectively being of colors that are different from each other, at least one type of the positively and negatively chargeable particles containing nitrogen atoms in a predetermined content, and the nitrogen atoms taking a bond formation enabling reduction in aggregation between the nitrogen-containing particles and reduction in peeling of the nitrogen-containing particle from a substrate, and wherein the electric field generating means generates an electric field corresponding to image information, between the pair of substrates, to thereby form an image on the image forming medium.
Dependencies are inferred from the claim text.