Toner and image forming method

Abstract

Provided is a toner that allows a transferred image to be stably output regardless of smoothness of a transfer material even under high-temperature and high-humidity environment or under low-temperature and low-humidity environment, that is excellent in cleanability for a transfer member even at the time of high-speed printing, and that causes less member contamination. The toner is a toner including toner particles each containing a binder resin and a wax, and silica fine particles on surfaces of the toner particles, wherein the silica fine particles have a number-average particle diameter of primary particles of 60nm or more and 300nm or less, a coverage rate of the surfaces of the toner particles with the silica fine particles is 15% or more and 95% or less, and the toner has a uniaxial collapse stress at a maximum consolidation stress of 10.0 kPa, of 2.5 kPa or more and 3.5 kPa or less.

Description

technical field [0001] The present invention relates to toners and image forming methods for use in electrophotographic systems, electrostatic recording systems, xerographic printing systems or toner jetting systems. Background technique [0002] In recent years, full-color image forming apparatuses such as full-color printers or full-color copiers have been required to handle not only plain paper but also various materials such as recycled paper having large surface irregularities. Therefore, a transfer method using an intermediate transfer member is mainly employed. [0003] In the transfer method using an intermediate transfer member, it is generally necessary to transfer a visualized toner image from an image bearing member to an intermediate transfer member, and then further transfer the image from the intermediate transfer member to a transfer material again . Due to the increase in the number of transfer operations compared with conventional methods, attention is pa...

AI Technical Summary

Problems solved by technology

However, the cleanliness on the intermediate transfer member is likely to be insufficient at high-speed printing, easily causing problems such as shortened member life due to member contamination, etc.

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