Two-component developer, replenishing developer, and image-forming method

A replenishing developer for use in a two-component developing method including:

• performing development while replenishing a developing device with the replenishing developer;
• and discharging an excess magnetic carrier in the developing device from the developing device, comprising:
• a magenta toner having magenta toner particles each having at least a binder resin and a colorant, and an external additive;
• and
• a magnetic carrier,
• the replenishing developer being a two-component developer containing the magenta toner at a mass ratio of 2 parts by mass or more and 50 parts by mass or less with respect to 1 part by mass of the magnetic carrier,
• wherein the magenta toner has the following characteristics:
• (i) when a concentration of the magenta toner in a solution of the magenta toner in chloroform is represented by Cm (mg/ml) and an absorbance of the solution at a wavelength of 538 nm is represented by A538, a relationship between Cm and A538 satisfies the following expression (3)
• 2.00<A538/Cm<6.55 (3);
• (ii) a lightness L* and a chroma C* of the magenta toner determined in a powder state satisfy relationships of 35.0≦L*≦45.0 and 60.0≦C*≦72.0;
• and
• (iii) an absolute value for a triboelectric charge quantity of the magenta toner measured by a two-component method using the magenta toner and the magnetic carrier is 50 mC/kg or more and 120 mC/kg or less.

An image-forming method, comprising:

• a charging step of charging an electrostatic latent image bearing member;
• an electrostatic latent image forming step of forming an electrostatic latent image on the electrostatic latent image bearing member charged in the charging step;
• a developing step of developing the electrostatic latent image formed on the electrostatic latent image bearing member with a two-component developer containing a magenta toner having magenta toner particles each having at least a binder resin and a colorant, and an external additive, and a magnetic carrier to form a magenta toner image;
• a transferring step of transferring the magenta toner image on the electrostatic latent image bearing member onto a transfer material through or without through an intermediate transfer body;
• and
• a fixing step of fixing the magenta toner image to the transfer material,
• wherein:
• a laid-on level of the magenta toner of a monochromatic solid image portion having an image density of 1.5 in the magenta toner image unfixed to be formed on the transfer material is in a range of 0.10 mg/cm2 or more to 0.50 mg/cm2 or less;
• and
• the magenta toner has the following characteristics:
• (i) when a concentration of the magenta toner in a solution of the magenta toner in chloroform is represented by Cm (mg/ml) and an absorbance of the solution at a wavelength of 538 nm is represented by A538, a relationship between Cm and A538 satisfies the following expression (3)
• 2.00<A538/Cm<6.55 (3);
• (ii) a lightness L* and a chroma C* of the magenta toner determined in a powder state satisfy relationships of 35.0≦L*≦45.0 and 60.0≦C*≦72.0;
• and
• (iii) an absolute value for a triboelectric charge quantity of the magenta toner measured by a two-component method using the magenta toner and the magnetic carrier is 50 mC/kg or more and 120 mC/kg or less.