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Image recording apparatus

  • US 10,137,684 B2
  • Filed: 09/19/2017
  • Issued: 11/27/2018
  • Est. Priority Date: 11/30/2016
  • Status: Active Grant
First Claim
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1. An image recording apparatus, comprising:

  • a timer;

    a power generator configured to receive electrical power from a power supply, and supply the electrical power to the timer as driving electrical power;

    a memory; and

    a controller,wherein the memory storing a time length parameter representing a ratio of an energized time length when the timer is in an energized state where the timer is receiving the driving electrical power from the power generator to a fundamental cycle time length which is a time length parameter used for estimation of a non-energized time length when the timer is in an non-energized state where the timer is not receiving the driving electrical power from the power generator and is based on a cyclic nature of a calendar,the controller being configured to execute;

    a storing process of calculating the energized time length during which the timer is in the energized state after a particular calculation start point based on a time measured by the timer and storing the energized time length as calculated;

    a determining process of determining whether there exists the non-energized state after the calculation start point;

    an estimation process of estimating the non-energized time length, referring to the energized time length and the time length parameter stored in the memory when it is determined in the determining process that there exists the non-energized state after the calculation start point; and

    a lapse time length calculation process of calculating a lapse time length elapsed from the calculation start point based on the non-energized time length estimated in the estimation process and the energized time length stored in the memory.

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