Developer and image forming apparatus
OwnerTakeshi KOJIMAinventor
Life of this patent
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Abstract
Developer is to be used in an image forming apparatus of an electro-photography type, in which a developer supporting member attaches the developer to a static latent image supporting member for developing a static latent image. The developer includes an outer additive; and base particles. Further, the developer has a charge amount Q1 before the image forming apparatus performs a continuous printing operation and a charge amount Q2 after the image forming apparatus performs the continuous printing operation so that a ratio of Q1 to Q2 (Q1/Q2) becomes between 0.81 and 0.94.
Claims11
Developer to be used in an image forming apparatus of an electro-photography type, in which a developer supporting member attaches the developer to a static latent image supporting member for developing a static latent image, comprising:
- an outer additive;
- and
- base particles,
- wherein said developer has a charge amount Q1 before the image forming apparatus performs a continuous printing operation and a charge amount Q2 after the image forming apparatus performs the continuous printing operation so that a ratio of Q1 to Q2 (Q1/Q2) becomes between 0.81 and 0.94.
Developer to be used in an image forming apparatus of an electro-photography type, in which a developer supporting member attaches the developer to a static latent image supporting member for developing a static latent image, comprising:
- an outer additive;
- and
- base particles having a charge amount Q0 before the outer additive is added thereto,
- wherein said developer has a charge amount Q1 after the outer additive is added to the base particles so that a ratio of Q0 to Q1 (Q0/Q1) becomes between 1.06 and 1.08.
Dependencies are inferred from the claim text.