Positively charged toner and two-component developer including positively charged toner

A positively charged toner comprising:

• a toner base particle;
• and
• an external additive that is adhered to a surface of the toner base particle,
• wherein that the external additive includes
• a silica particle a surface of which has been positively charged,
• a strontium titanate particle a surface of which is not positively charged and
• a resin fine particle that is formed of an acrylic resin,
• a number average primary particle diameter of the silica particle is equal to or greater than 10 nm but equal to or less than 40 nm,
• a number average primary particle diameter of the strontium titanate particle is equal to or greater than 10 nm but equal to or less than 40 nm,
• a coverage ratio of the silica particle to a surface region of the toner base particle is equal to or greater than 30% but equal to or less than 40% and
• a coverage ratio of the strontium titanate particle to the surface region of the toner base particle is equal to or greater than 5% but equal to or less than 10%.