Methods for providing a page countdown for a replaceable unit of an image forming device
US9304467B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 22, 2015 |
| Grant date | Apr 5, 2016 |
| Priority date | — |
| Expiry date | Apr 22, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/086
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method for providing a page countdown for a replaceable unit of an image forming device according to one embodiment includes calculating a number of pages remaining until the replaceable unit will reach the end of its life. The calculated number of pages remaining until the replaceable unit will reach the end of life is displayed on a display screen. After the calculated number of pages remaining is displayed, the displayed number of pages remaining is decreased in response to printing of pages by the image forming device, the number of pages remaining is recalculated and a discrepancy between the displayed number of pages remaining and the recalculated number of pages remaining is tracked. If the discrepancy exceeds a predetermined error threshold, the recalculated number of pages remaining is displayed and the displayed number of pages remaining continues to be decreased from the displayed recalculated number of pages remaining.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.