Resins for toners, toners, developers, image forming devices, and process cartridges

A technology of toner and resin, which is applied to the equipment, developer, and electrical recording process using charge patterns, etc., which can solve the problems of gloss change, time-consuming, and rapid melting of crystalline segments To avoid problems such as poor retention of pigment properties, and to achieve excellent pigment dispersibility
CN105706004BActive Publication Date: 2019-11-01RICOH KK
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
RICOH KK
Publication Date
2019-11-01

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Abstract

Provided is a resin for toner that is a copolymer including a crystalline segment and has a maximum elastic stress value (ES100) of 1,000 Pa or less at 100°C, and when the temperature is lowered from 100°C to 70°C Maximum elastic stress value (ES70) at 70°C of 1,000 Pa or greater, where each maximum elastic stress value is measured according to the large-amplitude oscillatory shear procedure.
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Description

technical field

[0001] The present invention relates to a resin for toner, a toner, a developer, an image forming apparatus, and a process cartridge. Background technique

[0002] Conventionally, a latent image formed electrically or magnetically in an electrophotographic image forming apparatus or the like is developed with an electrophotographic toner (hereinafter may be simply referred to as "toner"). In electrophotography, for example, an electrostatic charge image (latent image) is formed on a photoreceptor, and then developed with a toner, thereby forming a toner image. Typically, the toner image is transferred onto a transfer material such as paper, and then fixed on the transfer material such as paper. In the fixing step of fixing the toner image on the transfer paper, thermal fixing techniques such as heating roller fixing technique and heating belt fixing technique are generally used due to their high energy efficiency.

[0003] Recently, demands for faster and m...

Claims

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