Image forming apparatus which can form an image on a label sheet and control method thereof
First Claim
1. An image forming apparatus comprising:
- a sheet transport path;
a toner image transfer section along the sheet transport path at which a toner image is transferred to a label sheet conveyed along the sheet transport path;
a heating unit downstream from the toner image transfer section in a sheet transporting direction, the heating unit having a plurality of groups of heating members; and
a control unit configured to select a pair of the groups based on a size of the sheet, and during heating of the sheet by the heating unit, control the selected pair of the groups to generate less heat than the other groups.
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Abstract
An image forming apparatus includes a sheet transport path, a toner image transfer section along the sheet transport path at which a toner image is transferred to a sheet conveyed along the sheet transport path, a heating unit downstream from the toner image transfer section in a sheet transporting direction, the heating unit having a plurality of heating members arranged along a sheet width direction, and a control unit. The control unit is configured to determine locations of end portions of a label on the sheet in the sheet width direction, and during heating of the sheet by the heating unit, control heating members at locations facing the end portions of the label to generate less heat than the one or more of the other heating members.
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Citations
20 Claims
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1. An image forming apparatus comprising:
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a sheet transport path; a toner image transfer section along the sheet transport path at which a toner image is transferred to a label sheet conveyed along the sheet transport path; a heating unit downstream from the toner image transfer section in a sheet transporting direction, the heating unit having a plurality of groups of heating members; and a control unit configured to select a pair of the groups based on a size of the sheet, and during heating of the sheet by the heating unit, control the selected pair of the groups to generate less heat than the other groups. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An image forming apparatus comprising:
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a sheet transport path; a toner image transfer section along the sheet transport path at which a toner image is transferred to a label sheet conveyed along the sheet transport path; a fixing unit downstream from the toner image transfer section in a sheet transporting direction, the fixing unit having a plurality of groups of heating members; and a control unit configured to select a pair of the groups based on a size of the sheet, and during fixing of the sheet by the fixing unit, control the selected pair of the groups to generate no heat. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. A method of forming an image on a sheet, comprising:
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transferring a toner image onto a label sheet; conveying the sheet with the toner image to a fixing unit; selecting a pair of groups of heating members included in a heater of the fixing unit based on a size of the sheet; and heating the sheet with the heater while clamping the sheet conveyed to the fixing unit to fix the toner image onto the sheet, wherein during the heating, the selected pair of the groups are controlled to generate less heat than the other groups. - View Dependent Claims (20)
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Specification