| 摘要 |
PROBLEM TO BE SOLVED: To surely preserve variable control information to be changed based on control operation contents or the like in an easily renritable state. SOLUTION: A display part 23 is formed at one part of the side face of a toner storage part 21 of a toner cartridge freely attachably and detachably mounted on the main body of copy machine. The display part 23 is composed of reversible thermosensible materials using known leuco coloring matters. Concerning this reversible thermosensible recording material, when a heat coloring image is rapidly cooled, a coloring state is fixed and when this image is gradually cooled, colors disappear. Therefore, by selectively performing quick cooling or gradual cooling after heating through a method for using a thermal head for the display part 23 or through hot stamping, information on the said toner cartridge or information on toners 24 can be written and erased. |
