Abstract: A circuit in an electronic device, such a computer, printer, copier and the like, evaluates a duration of a power cycle of the electronic device. The circuit, upon detection of a sufficiently brief power cycle, selects a shortened boot-up sequence to expedite recovery of the electronic device into an operational state. The circuit includes a short-power cycle detector which retains a power cycle status for use in evaluation of the power cycle duration and a charging circuit for updating the power cycle status. Timing elements for providing isolation of the charging circuit during evaluation and the updating of the power cycle status during an operational state are also presented.

Abstract: An electrophotographic imaging device having a controller including power management circuitry managing the distribution of electrical power to an image fixing device and other electrically powered components. The power management circuitry manages the power distribution first to provide the image fixing device with sufficient power to meet the image fixing requirements, and second to meet the power requirements of the remaining electrically powered components. For example, during normal operation of the imaging device, if, for a particular print job, more heat is required to fix the toner with sufficient strength thus requiring a higher image fixing device temperature to maintain the same printer speed (pages per minute) additional electrical power is required for the image fixing device.