| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an image forming system or the like that can properly use a developer up to its appropriate deterioration state according to an initial capacity of a developer container. <P>SOLUTION: The image forming system includes: a first developer container (developing cartridge 5C) configured to contain a developer (toner T); a second developer container (developing cartridge 5B) configured to contain the developer, wherein an amount of the developer contained in the second developer container is larger than that contained in the first developing container; and an image forming apparatus configured to detachably mount therein the first developer container and the second developer container at a same position. The first developer container is configured such that light reception time (time when a light-receiving element receives light having intensity equal to or above a prescribed value for a fixed time) obtained when the first developer container having a prescribed amount of developer remaining is mounted in the image forming apparatus is shorter than a light reception time obtained when the second developer container having the same prescribed amount of developer remaining is mounted in the image forming apparatus. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
