ELECTROPHOTOGRAPHIC TONER, INVISIBLE ELECTROPHOTOGRAPHIC TONER, ELECTROPHOTOGRAPHIC DEVELOPER, TONER CARTRIDGE, PROCESS CARTRIDGE, AND IMAGE FORMATION APPARATUS

摘要

The present invention is sufficiently high absorption in the near-infrared wavelength range of 750nm~1000nm,, excellent light fastness and a task is to provide a toner for electrophotography. ; to achieve the above object, containing a binder resin and an infrared absorber, and at least one of the infrared absorber is to, by the following structural formula (1) show that the US Perry dingye squarylium pigment, provides a toner for electrophotography. In another aspect, the present invention, containing a binder resin and an infrared absorber, and at least one of said infrared absorbing agent, the following structural formula (1) Superior US dingye squarylium pigment, invisible electrophotographic represented by ( ) provide a toner The. In another aspect, the present invention provides a developer for electrophotography containing the toner for electrophotography invisible. In another aspect, the present invention provides a toner cartridge for receiving a non-visible toner for the electrophotography. In another aspect, the present invention, the developer together with the holding member at least comprising a box, provides a process cartridge accommodating a developer for the electrophotography. In another aspect, the present invention, developed by the developer for the electrophotography, and provides an image forming apparatus having a developing means for forming a toner image.