A developer replenishing device included in an image forming apparatus of the present invention replenishes a developer from a developer container to a developing device and allows the developer container to decrease in volume when air or the developer is discharged from the developer container. The capsule is formed by laminating two dome-shaped films together at the peripheries thereof. It is possible to update and re-seal sealed data having a usability condition of matching with predetermined terminal environment information during a secure boot without rebooting a terminal when a program using the sealed data is updated. 02\u03a9\xb7cm or less measured at a compression density of 0. The present invention also broadly comprises a one-way clutch with inner and outer races, at least one engagement element, and at least one elastically deformable element. below the minimum reaction temperature, and is provided at the pressure.