An ink cartridge includes an ink chamber configured to store ink and a light blocking layer disposed within the ink chamber. The fastener is sandwiched between the mounting plate and the elastic membrane. The fixed port mode applies a VLAN tag with a default VLAN identifier associated with the ingress port. Finally, the system groups users based on similarity of their fashion preferences. for 24 seconds, at least 90% of the developed silver is in contact with the photosensitive silver halide grains after development;. Further, there is provided an electronic device which includes a display device, a case including a first space for retaining the display device, the display device being operable to be slid into the first space, a stopper disposed in a second space between the retained display device and the case, and an electronic device arranged in a third space formed by arranging the stopper.