Fuser control device and image forming apparatus
AssigneeOki Data Corporation
InventorToshiki Sato
Life of this patent
Estimating the term…
Abstract
A fuser control device includes a heat application part for heat supply, a fuser part that has a passage region where a print medium passes through and a not-passage region that is located at both sides of the passage region where the print medium does not pass through, and a first temperature detection part that detects a first temperature of the passage region, a second temperature detection part that detects a second temperature of the not-passage region, and a heat application controller that changes a target temperature according to the first detection temperature and the second detection temperature, and performs the heat generation such that a temperature of the fuser part approaches the target temperature.
Claims20
A fuser control device, comprising:
- a heat application part that generates heat and supplies the heat;
- a fuser part
- that has a passage region where a print medium passes through and a not-passage region that is located at both sides of the passage region where the print medium does not pass through, and
- that fuses an image on the print medium by the heat applied from the heat application part while the print medium passes therethrough;
- a first temperature detection part that detects a temperature of the passage region and outputs a first detection temperature determined by the detected temperature;
- a second temperature detection part that detects another temperature of the not-passage region and outputs a second detection temperature determined by the detected another temperature;
- a determination part that determines whether the fuser part is in a pre-fusion state or in a print execution state;
- and
- a heat application controller
- that preconfigures a first switch temperature for switching a target temperature of the fuser part for the pre-fusion state and a second switch temperature for switching the target temperature of the fuser part for the print execution state, and
- that changes the target temperature of the fuser part according to the first detection temperature, the second detection temperature and the first switch temperature if the determination part determines that the fuser part is in the pre-fusion state,
- that changes the target temperature of the fuser part according to the first detection temperature, the second detection temperature and the second switch temperature if the determination part determines that the fuser part is in the print execution state, and
- that controls the heat application part so that a temperature of the fuser part approaches the target temperature.
A fuser control device, comprising:
- a heat application part that generates heat and supplies the heat;
- a fuser part
- that has a passage region where a print medium passes through and a not-passage region that is located at both sides of the passage region where the print medium does not pass through, and
- that perform a fusing to fuse an image on the print medium by the heat applied from the heat application part while the print medium passes therethrough;
- a first temperature detection part that detects a temperature of the passage region and outputs a first detection temperature determined by the detected temperature;
- a second temperature detection part that detects another temperature of the not-passage region and outputs a second detection temperature determined by the detected another temperature;
- and
- a heat application controller that changes a target temperature of the fuser part according to the first detection temperature and the second detection temperature, and controls the heat application part so that a temperature of the fuser part approaches the target temperature, wherein
- using a primary correlation coefficient of a first temperature difference between the first detection temperature and the second detection temperature and a second temperature difference between the first detection temperature and an end part temperature of the print medium that is configured for before performing the fusing and during the fusing, the heat application controller performs a temperature control of the fuser part by changing the target temperature of the fuser part before the fusing and during the fusing.
Dependencies are inferred from the claim text.