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US 2019/0375605 A1Published application
Image forming apparatus
AssigneeCanon Kabushiki Kaisha
InventorsSatoshi Tsuda, Yasuhiko Fuse, Takashi Kuwata, Yoshiteru Kaida, Shoichi Koyama
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Abstract
The image forming apparatus includes a feeding unit, a detection unit provided downstream of the feeding unit, a measurement unit that measures a measured time from the start of conveyance of a recording material to the detection of the recording material, and a determination unit that performs renewal determination for determining whether the feeding unit has been replaced with a new unit. Thus, replacement of the feeding unit with a new unit can automatically be detected.
Claims13
An image forming apparatus comprising:
- a feeding unit configured to convey a recording material and detachably mountable on an apparatus main body that forms an image on the recording material;
- a first detection unit configured to detect the recording material, the first detection unit provided downstream of the feeding unit in a conveyance direction of the recording material;
- a measurement unit configured to measure a measured time from start of conveyance of the recording material by the feeding unit to detection of the recording material by the detection unit;
- and
- a first determination unit configured to form a first data set from a plurality of measured times acquired by the measurement unit in a plurality of measurement processes, form a second data set from a plurality of measured times acquired by the measurement unit in a plurality of measurement processes during a period different from a period during which the first data set is formed, and perform renewal determination for determining whether the feeding unit is replaced with a new unit based on a change from the first data set to the second data set.
2 more elements
Dependencies are inferred from the claim text.