Image forming apparatus, and method and computer-readable medium for the same
First Claim
1. An image forming apparatus comprising:
- a process unit configured to form a toner image on a sheet;
a fuser configured to heat the sheet passed through the process unit thereby thermally fixing the toner image onto the sheet;
a re-conveyor configured to convey the sheet passed through the fuser to the process unit; and
a controller configured to perform particular duplex printing in response to receipt of a print instruction, the particular duplex printing comprising;
when the sheet is a first sheet to pass through the fuser for a first time after the print instruction has been received, setting a target temperature of the fuser for thermally fixing the toner image onto the sheet to a second temperature higher than a first temperature;
when the sheet is the first sheet to pass through the fuser for a second time, setting the target temperature of the fuser to the first temperature;
when the sheet is a second sheet to pass through the fuser for a first time after the first sheet has passed through the fuser for the second time, setting the target temperature of the fuser to the first temperature;
when the sheet is the second sheet to pass through the fuser for a second time, setting the target temperature of the fuser to the first temperature;
when the target temperature of the fuser is the first temperature, controlling the re-conveyor to convey the sheet passed through the fuser to the process unit in a first period of time; and
when the target temperature of the fuser is the second temperature, controlling the re-conveyor to convey the sheet passed through the fuser to the process unit in a second period of time, the second period of time being longer than the first period of time.
2 Assignments
0 Petitions
Accused Products
Abstract
An image forming apparatus includes a process unit configured to form a toner image on a sheet, a fuser configured to heat the sheet passed through the process unit thereby fixing the toner image onto the sheet, a re-conveyor configured to convey the sheet passed through the fuser to the process unit, and a controller configured to perform particular duplex printing including controlling, when a temperature of the fuser is a first temperature, the re-conveyor to convey the sheet passed through the fuser to the process unit in a first period of time, and controlling, when the temperature of the fuser is a second temperature higher than the first temperature, the re-conveyor to convey the sheet passed through the fuser to the process unit in a second period of time longer than the first period of time.
7 Citations
19 Claims
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1. An image forming apparatus comprising:
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a process unit configured to form a toner image on a sheet; a fuser configured to heat the sheet passed through the process unit thereby thermally fixing the toner image onto the sheet; a re-conveyor configured to convey the sheet passed through the fuser to the process unit; and a controller configured to perform particular duplex printing in response to receipt of a print instruction, the particular duplex printing comprising; when the sheet is a first sheet to pass through the fuser for a first time after the print instruction has been received, setting a target temperature of the fuser for thermally fixing the toner image onto the sheet to a second temperature higher than a first temperature; when the sheet is the first sheet to pass through the fuser for a second time, setting the target temperature of the fuser to the first temperature; when the sheet is a second sheet to pass through the fuser for a first time after the first sheet has passed through the fuser for the second time, setting the target temperature of the fuser to the first temperature; when the sheet is the second sheet to pass through the fuser for a second time, setting the target temperature of the fuser to the first temperature; when the target temperature of the fuser is the first temperature, controlling the re-conveyor to convey the sheet passed through the fuser to the process unit in a first period of time; and when the target temperature of the fuser is the second temperature, controlling the re-conveyor to convey the sheet passed through the fuser to the process unit in a second period of time, the second period of time being longer than the first period of time. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method adapted to be implemented on a processor coupled with an image forming apparatus comprising a process unit, a fuser, and a re-conveyor, the method comprising:
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when the sheet is a first sheet to pass through the fuser for a first time after the print instruction has been received, setting a target temperature of the fuser for thermally fixing the toner image onto the sheet to a second temperature higher than a first temperature; when the sheet is the first sheet to pass through the fuser for a second time, setting the target temperature of the fuser to the first temperature; when the sheet is a second sheet to pass through the fuser for a first time after the first sheet has passed through the fuser for the second time, setting the target temperature of the fuser to the first temperature; when the sheet is the second sheet to pass through the fuser for a second time, setting the target temperature of the fuser to the first temperature; when the target temperature of the fuser is the first temperature, controlling the re-conveyor to convey the sheet passed through the fuser to the process unit in a first period of time; and when the target temperature of the fuser is the second temperature higher than the first temperature, controlling the re-conveyor to convey the sheet passed through the fuser to the process unit in a second period of time, the second period of time being longer than the first period of time.
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15. An image forming apparatus comprising:
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a process unit configured to form a toner image on a sheet; a fuser configured to heat the sheet passed through the process unit thereby thermally fixing the toner image onto the sheet; a re-conveyor configured to convey the sheet passed through the fuser to the process unit; and a controller configured to perform particular duplex printing in response to receipt of a print instruction, the particular duplex printing comprising; when an outside air temperature is equal to or lower than a threshold temperature before a first sheet passes through the fuser for a first time after receipt of the print instruction, setting a target temperature of the fuser to a second temperature higher than a first temperature; when the outside air temperature is higher than the threshold temperature before the first sheet passes through the fuser for the first time after receipt of the print instruction, setting the target temperature of the fuser to the first temperature; when the target temperature of the fuser is the first temperature, controlling the re-conveyor to convey the sheet passed through the fuser to the process unit in a first period of time; and when the target temperature of the fuser is the second temperature higher than the first temperature, controlling the re-conveyor to convey the sheet passed through the fuser to the process unit in a second period of time, the second period of time being longer than the first period of time. - View Dependent Claims (16, 17, 18, 19)
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Specification