| 摘要 |
PURPOSE:To surely form a tracking pattern by means of non-visible toner by preventing the generation of non-visible toner interruption and making the substitution of non-visible toner difficult. CONSTITUTION:This image forming device is provided with four visible toner cases 202a to 205a respectively storing Y, M, C and Bk color toner materials, four non-visible toner cases 206a storing non-visible toner and a feeding line 206b for feeding the non-visible toner in the cases 206a to a non-visible developing device 206. The four non-visible toner cases 206a are respectively stored in the four visible toner cases 202a to 205a. |
