Information processing apparatus, non-transitory computer readable recording medium that records information processing program, and information processing method

A non-transitory computer readable recording medium that records an information processing program executable by a controller circuit of an information processing apparatus, the information processing program causing the controller circuit to

• determine a feed-time-period, the feed-time-period being a time period in which an image forming apparatus, which feeds media and forms images, feeds one medium,
• calculate a variation-value for each variation-calculation-span, the variation-calculation-span being a span in which a certain number of media is fed, the variation-value being a standard deviation of the feed-time-periods of the media,
• detect that a successive-occurrence-number reaches a successive-occurrence-reference-number, the successive-occurrence-number being a number of successive variation-values in each variation-calculation-span that exceeds a variation-reference-value,
• determine a number-of-fed-media-at-wear-detected-time, the number-of-fed-media-at-wear-detected-time being a number of the fed media from start of operation of the image forming apparatus to a point at which the successive-occurrence-number reaches the successive-occurrence-reference-number,
• divide the number-of-fed-media-at-wear-detected-time by a number-of-total-operation-days to calculate an average-number-of-fed-media-per-day, the number-of-total-operation-days being a number of days from the start of operation of the image forming apparatus to the point at which the successive-occurrence-number reaches the successive-occurrence-reference-number, and
• divide an allowed-number-of-media-to-be-fed-after-wear-detection by the average-number-of-fed-media-per-day to calculate a predicted-number-of-days, the allowed-number-of-media-to-be-fed-after-wear-detection being a number of feedable media from the point at which the successive-occurrence-number reaches the successive-occurrence-reference-number to a point at which a part is replaced, the predicted-number-of-days being a number of days in which the allowed-number-of-media-to-be-fed-after-wear-detection is to be consumed starting from a day on which the successive-occurrence-number reaches the successive-occurrence-reference-number.

An information processing method, comprising:

• determining a feed-time-period, the feed-time-period being a time period in which an image forming apparatus, which feeds media and forms images, feeds one medium;
• calculating a variation-value for each variation-calculation-span, the variation-calculation-span being a span in which a certain number of media is fed, the variation-value being a standard deviation of the feed-time-periods of the media;
• detecting that a successive-occurrence-number reaches a successive-occurrence-reference-number, the successive-occurrence-number being a number of successive variation-values in each variation-calculation-span that exceeds a variation-reference-value;
• determining a number-of-fed-media-at-wear-detected-time, the number-of-fed-media-at-wear-detected-time being a number of the fed media from start of operation of the image forming apparatus to a point at which the successive-occurrence-number reaches the successive-occurrence-reference-number;
• dividing the number-of-fed-media-at-wear-detected-time by a number-of-total-operation-days to calculate an average-number-of-fed-media-per-day, the number-of-total-operation-days being a number of days from the start of operation of the image forming apparatus to the point at which the successive-occurrence-number reaches the successive-occurrence-reference-number;
• and
• dividing an allowed-number-of-media-to-be-fed-after-wear-detection by the average-number-of-fed-media-per-day to calculate a predicted-number-of-days, the allowed-number-of-media-to-be-fed-after-wear-detection being a number of feedable media from the point at which the successive-occurrence-number reaches the successive-occurrence-reference-number to a point at which a part is replaced, the predicted-number-of-days being a number of days in which the allowed-number-of-media-to-be-fed-after-wear-detection is to be consumed starting from a day on which the successive-occurrence-number reaches the successive-occurrence-reference-number.