Toner and image forming method
AssigneeCanon Kabushiki Kaisha
InventorsKiyoshi Mizoe, Tsuyoshi Takiguchi, Fumihiro Arahira, Masanori Ito
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Abstract
A toner suitable for use in an image forming method including a contact charging step is provided. The toner includes: toner particles comprising at least a binder resin and a colorant, and fine particles. The fine particles comprise: (i) a tungsten-containing tin oxide, or (ii) base particles, and a tungsten-containing tin compound coating the base particles, the fine particles contain tin (Sn) in a weight ratio (Sn/b) of 0.01 to 2.0 with respect to the base particles (B). In the fine particles, tungsten (W) is contained in a mol ratio (W/Sn) of 0.001 to 0.3 with respect to the tin (Sn).
Claims67
A toner comprising:
- toner particles comprising at least a binder resin and a colorant, and fine particles;
- wherein the fine particles comprise base particles, and a tungsten-containing tin compound coating the base particles, the fine particles contain tin (Sn) in a weight ratio (Sn/b) of 0.01 to 2.0 with respect to the base particles (B), and tungsten (W) is contained in a mol ratio (W/Sn) of 0.001 to 0.3 with respect to the tin (Sn).
An image forming method, comprising at least:
- a charging step of causing a charging member supplied with a voltage to contact an image-bearing member, thereby charging the image-bearing member;
- a latent image-forming step of forming an electrostatic latent image on the charged image-bearing member;
- a developing step of transferring a toner carried on a toner-carrying member onto the electrostatic latent image on the image-bearing member to form a toner image;
- and
- a transfer step of electrostatically transferring the toner image formed on the image bearing member onto a transfer-receiving material,
- wherein the toner comprises:
- toner particles comprising at least a binder resin and a colorant, and fine particles;
- wherein the fine particles comprise base particles, and a tungsten-containing tin compound coating the base particles, the fine particles contain tin (Sn) in a weight ratio (Sn/b) of 0.01 to 2.0 with respect to the base particles (B), and tungsten (W) is contained in a mol ratio (W/Sn) of 0.001 to 0.3 with respect to the tin (Sn).
A toner comprising:
- toner particles comprising at least a binder resin and a colorant, and fine particles;
- wherein the fine particles comprise tungsten-containing tin oxide fine particles, and tungsten (W) is contained therein in a mol ratio (W/Sn) of 0.001 to 0.3 with respect to the tin (Sn).
An image forming method, comprising at least:
- a charging step of causing a charging member supplied with a voltage to contact an image-bearing member to charge the image-bearing member;
- a latent image-forming step of forming an electrostatic latent image on the charged image-bearing member;
- a developing step of transferring a toner carried on a toner-carrying member onto the electrostatic latent image on the image-baring member to form a toner image;
- and
- a transfer step of electrostatically transferring the toner image formed on the image bearing member onto a transfer-receiving material,
- wherein the toner comprises:
- toner particles comprising at least a binder resin and a colorant, and fine particles;
- wherein the fine particles comprise tungsten-containing tin oxide fine particles, and tungsten (W) is contained therein in a mol ratio (W/Sn) of 0.001 to 0.3 with respect to the tin (Sn).
Dependencies are inferred from the claim text.