Fixing device with a heat generating layer containing a high molecular compound and a carbon fiber, and an electrophotographic image forming apparatus containing the fixing device

摘要

Provided is a fixing device, the heat generation amount of which can be obtained with a smaller amount of a microwave absorbing material. As a result, the start-up (warm-up) time for achieving a fixing temperature can be shortened without impairing characteristics such as flexibility, releasing property, and durability. The fixing device includes a heating member; a pressurizing member; and a microwave generating unit. It is configured to fix an unfixed toner on a recording material by passing the recording material through a nip formed between the heating member and the pressurizing member. The heating member includes a heat generating layer for generating heat with microwaves generated by the microwave generating unit. The heat generating layer contains a high molecular compound and a carbon fiber having an average fiber diameter of 80-150 nm, an average fiber length of 6-10 μm, and an absorption peak in a Raman spectrum resulting from a graphite structure.

主权项

1. A fixing device, comprising:
a heating member; a pressurizing member; and a microwave generating unit, the fixing device being configured to fix an unfixed toner on a recording material by passing the recording material through a nip formed by the heating member and the pressurizing member, wherein: the heating member comprises a heat generating layer for generating heat with a microwave generated by the microwave generating unit; the heat generating layer contains a high molecular compound and a carbon fiber; and wherein: the carbon fiber
has an average fiber diameter of 80 nm or more and 150 nm or less,has an average fiber length of 6 μm or more and 10 μm or less, andhas, in a Raman spectrum, an absorption peak resulting from a graphite structure.