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US 12,681,412 B2Granted
Image forming apparatus and image forming system that manufactures booklets by heating multiple sheets
AssigneeCanon Kabushiki Kaisha
InventorYuya Hirano
Life of this patent
Estimating the term…
Abstract
An image forming unit forms an image on a sheet using toner. A fixing unit includes a first heater that fixes the image to the sheet. A booklet manufacturing unit manufactures a booklet by heating a plurality of sheets that have passed through the fixing unit using a second heater and bonding together the plurality of sheets. Power is supplied to the first heater and the second heater through an inlet. A first detection circuit that detects an inlet current flowing through the inlet. A control circuit controls adjusts the power supplied to the second heater so that the inlet current does not exceed a rated value on a basis of the inlet current detected by the first detection circuit.
Claims21
An image forming apparatus comprising:
- an image forming unit that forms an image on a sheet using toner;
- a fixing unit including a first heater that fixes the image to the sheet;
- a booklet manufacturing unit that manufactures a booklet by heating a plurality of sheets that have passed through the fixing unit using a second heater and bonding together the plurality of sheets;
- an inlet through which power is supplied to the first heater and the second heater;
- a first detection circuit that detects an inlet current flowing through the inlet;
- and
- a control circuit that controls the power supplied from the inlet to the first heater and the second heater,
- wherein the control circuit adjusts:
- the power supplied to the second heater so that the inlet current does not exceed a rated value on a basis of the inlet current detected by the first detection circuit;
- and
- timing of power supply to the second heater so that the inlet current does not exceed the rated value in a case where the inlet current is greater than a first threshold less than the rated value, and
- wherein the adjusting timing of power supply to the second heater includes delaying the timing of power supply to the second heater.
9 more elements
An image forming apparatus comprising:
- an image forming unit that forms an image on a sheet using toner;
- a fixing unit including a first heater that fixes the image to the sheet;
- a booklet manufacturing unit that manufactures a booklet by heating a plurality of sheets that have passed through the fixing unit using a second heater and bonding together the plurality of sheets;
- an inlet through which power is supplied to the first heater and the second heater;
- a first detection circuit that detects an inlet current flowing through the inlet;
- and
- a control circuit that controls the power supplied from the inlet to the first heater and the second heater,
- wherein the control circuit adjusts:
- the power supplied to the second heater so that the inlet current does not exceed a rated value on a basis of the inlet current detected by the first detection circuit;
- and
- the power supplied to the first heater and the power supplied to the second heater so that the inlet current does not exceed the rated value in a case where the inlet current is greater than a first threshold less than the rated value.
8 more elements
An image forming apparatus comprising:
- an image forming unit that forms an image on a sheet using toner;
- a fixing unit including a first heater that fixes the image to the sheet;
- a booklet manufacturing unit that manufactures a booklet by heating a plurality of sheets that have passed through the fixing unit using a second heater and bonding together the plurality of sheets;
- an inlet through which power is supplied to the first heater and the second heater;
- a first detection circuit that detects an inlet current flowing through the inlet;
- and
- a control circuit that controls the power supplied from the inlet to the first heater and the second heater;
- and
- a second detection circuit that detects a heater current flowing through the second heater,
- wherein the control circuit adjusts:
- the power supplied to the second heater so that the inlet current does not exceed a rated value on a basis of the inlet current detected by the first detection circuit;
- and
- at least power supplied to the second heater so that the inlet current does not exceed the rated value on a basis of the inlet current and the heater current detected by the second detection circuit.
10 more elements
An image forming system including an image forming apparatus and a post-processing apparatus detachable from the image forming apparatus, wherein:
- the image forming apparatus includes:
- an image forming unit that forms an image on a sheet using toner;
- and
- a fixing unit including a first heater that fixes the image to the sheet,
- the post-processing apparatus includes:
- a booklet manufacturing unit that manufactures a booklet by heating a plurality of sheets that have passed through the fixing unit using a second heater and bonding together the plurality of sheets,
- the image forming apparatus further includes:
- an inlet through which power is supplied to the first heater and the second heater;
- a first detection circuit that detects an inlet current flowing through the inlet;
- and
- a control circuit that controls the power supplied from the inlet to the first heater and the second heater,
- wherein the control circuit:
- adjusts the power supplied to the second heater so that the inlet current does not exceed a rated value on a basis of the inlet current detected by the first detection circuit;
- and
- timing of power supply to the second heater so that the inlet current does not exceed the rated value in a case where the inlet current is greater than a first threshold less than the rated value, and
- wherein the adjusting timing of power supply to the second heater includes delaying the timing of power supply to the second heater.
13 more elements
Dependencies are inferred from the claim text.