Image forming apparatus
AssigneeCanon Kabushiki Kaisha
InventorYoshimitsu Nakane
Life of this patent
Estimating the term…
Abstract
An image forming apparatus includes an image bearing member configured to bear a toner image on a surface thereof, a transfer unit configured to transfer the toner image on the image bearing member to a sheet, a fixing unit configured to heat and fix the toner image on the sheet transferred by the transfer unit, a reading unit configured to read the sheet that has passed through the fixing unit, from an end surface of the sheet, a control unit configured to control a fixing temperature when the fixing unit heats and fixes the toner image on the sheet, based on an image read by the reading unit.
Claims8
An image forming apparatus comprising:
- an image bearing member configured to bear a toner image on a surface thereof;
- a transfer unit configured to transfer the toner image on the image bearing member to a sheet;
- a fixing unit configured to heat and fix the toner image on the sheet transferred by the transfer unit;
- a reading unit configured to read the sheet that has passed through the fixing unit, from an end surface of the sheet;
- a control unit configured to control a fixing temperature when the fixing unit heats and fixes the toner image on the sheet, based on an image read by the reading unit;
- a skew-feed unit configured to skew feed a sheet in a direction of approaching to the reading unit;
- and
- a stop unit configured to stop the sheet that is skew fed by the skew-feed unit to adjust a position.
An image forming apparatus comprising:
- an image bearing member configured to bear a toner image on a surface thereof;
- a transfer unit configured to transfer the toner image on the image bearing member to a sheet;
- a fixing unit configured to heat and fix the toner image on the sheet transferred by the transfer unit;
- a reading unit configured to read the sheet that has passed through the fixing unit, from an end surface of the sheet;
- and
- a control unit configured to control a fixing temperature when the fixing unit heats and fixes the toner image on the sheet, based on an image read by the reading unit,
- wherein the fixing unit applies heat to the sheet including a resin layer on an upper surface of a paper layer and embeds the toner image formed on the resin layer into the resin layer to be fixed, and
- wherein the control unit calculates a protrusion amount of the toner image from the resin layer based on the image read by the reading unit, and controls the fixing unit to increase the fixing temperature when the protrusion amount is larger than a predetermined value.
An image forming apparatus comprising:
- an image bearing member configured to bear a toner image on a surface thereof;
- a transfer unit configured to transfer the toner image on the image bearing member to a sheet;
- a fixing unit configured to heat and fix the toner image on the sheet transferred by the transfer unit;
- a reading unit configured to read the sheet that has passed through the fixing unit, from an end surface of the sheet;
- and
- a control unit configured to control a fixing temperature when the fixing unit heats and fixes the toner image on the sheet, based on an image read by the reading unit,
- wherein the fixing unit applies heat to the sheet including a resin layer on an upper surface of a paper layer and embeds the toner image formed on the resin layer into the resin layer to be fixed, and
- wherein the control unit calculates an infiltration length that is a length of region where the toner image infiltrates into the resin layer, based on the image read by the reading unit, and controls the fixing unit to decrease the fixing temperature when the infiltration length is larger than a predetermined value.
Dependencies are inferred from the claim text.