A fluid ejection device includes a flexible membrane and an adhesive layer on the flexible membrane. , and especially at about 70\xb11\xb0 C. The method can optimize the hardware used to implement error diffusion and improve the operating efficiency. The cable modem notifies the cable modem termination system of the switch to battery backup mode of operation. In addition, since the plurality of storage media are controlled concurrently, image data can be promptly read from or written to the storage media, and data transfer speed between the storage media can be increased.