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US 2016/0255225 A1Published application
Sheet conveyance device, image reading device, image forming apparatus, and sensor unit
AssigneeCanon Kabushiki Kaisha
InventorsYuichi Yamamoto, Akira Matsumoto, Masahito Ikeda
Life of this patent
Estimating the term…
Abstract
A double feed detection sensor unit includes a double feed detection sensor for detecting a document via a hole on a conveyance guide, a control circuit board on which the double feed detection sensor and an element are provided, and a protection member provided to cover the element.
Claims22
A sheet conveyance device comprising:
- a sheet stacking portion on which sheets are stacked;
- a sheet feeding unit configured to feed sheets stacked on the sheet stacking portion;
- a conveyance guide disposed on a downstream side of the sheet feeding unit in a sheet conveyance direction;
- and
- a sensor unit disposed under the conveyance guide,
- wherein the sensor unit includes:
- a sensor configured to detect a sheet conveyed along the conveyance guide via an opening formed on the conveyance guide;
- a control circuit board on which the sensor and an element electrically connected to the sensor are provided;
- and
- a protection member provided to cover the element,
- wherein the protection member includes a hole portion, and
- wherein the sensor is inserted into the hole portion to penetrate through the hole portion.
9 more elements
A sheet conveyance device comprising:
- a sheet stacking portion on which sheets are stacked;
- a sheet feeding unit configured to feed sheets stacked on the sheet stacking portion;
- a conveyance guide disposed on a downstream side of the sheet feeding unit in a sheet conveyance direction;
- and
- a sensor unit disposed under the conveyance guide,
- wherein the sensor unit includes:
- a sensor configured to detect a sheet conveyed along the conveyance guide, via an opening formed on the conveyance guide;
- a control circuit board on which the sensor and an element electrically connected to the sensor are provided;
- and
- a protection member provided to cover the element,
- wherein the protection member includes a hole portion, and
- wherein positioning of the protection member with respect to the control circuit board is performed using the hole portion of the protection member and an outer circumferential surface of the sensor.
9 more elements
An image reading device comprising:
- a sheet conveyance device configured to convey a sheet;
- and
- an image reading unit configured to read image information on a sheet fed by the sheet feeding unit,
- wherein the sheet conveyance device includes:
- a sheet stacking portion on which sheets are stacked;
- a sheet feeding unit configured to feed sheets stacked on the sheet stacking portion;
- a conveyance guide disposed on a downstream side of the sheet feeding unit in a sheet conveyance direction;
- and
- a sensor unit disposed under the conveyance guide,
- wherein the sensor unit includes:
- a sensor configured to detect a sheet conveyed along the conveyance guide, via an opening formed on the conveyance guide;
- a control circuit board on which the sensor and an element electrically connected to the sensor are provided;
- and
- a protection member provided to cover the element,
- wherein the protection member includes a hole portion, and
- wherein the sensor is inserted into the hole portion to penetrate through the hole portion.
13 more elements
An image reading device comprising:
- a sheet conveyance device configured to convey a sheet;
- and
- an image reading unit configured to read image information on a sheet fed by the sheet feeding unit, wherein the sheet conveyance device includes:
- a sheet stacking portion on which sheets are stacked;
- a sheet feeding unit configured to feed sheets stacked on the sheet stacking portion;
- a conveyance guide disposed on a downstream side of the sheet feeding unit in a sheet conveyance direction;
- and
- a sensor unit disposed under the conveyance guide,
- wherein the sensor unit includes:
- a sensor configured to detect a sheet conveyed along the conveyance guide, via an opening formed on the conveyance guide;
- a control circuit board on which the sensor and an element electrically connected to the sensor are provided;
- and
- a protection member provided to cover the element,
- wherein the protection member includes a hole portion, and
- wherein positioning of the protection member with respect to the control circuit board is performed using the hole portion of the protection member and an outer circumferential surface of the sensor.
12 more elements
An image forming apparatus comprising:
- an image forming unit configured to form an image on a recording medium;
- and
- a sheet conveyance device configured to convey a sheet,
- wherein the sheet conveyance device includes:
- a sheet stacking portion on which sheets are stacked;
- a sheet feeding unit configured to feed sheets stacked on the sheet stacking portion;
- a conveyance guide disposed on a downstream side of the sheet feeding unit in a sheet conveyance direction;
- and
- a sensor unit disposed under the conveyance guide,
- wherein the sensor unit includes:
- a sensor configured to detect a sheet conveyed along the conveyance guide, via an opening formed on the conveyance guide;
- a control circuit board on which the sensor and an element electrically connected to the sensor are provided;
- and
- a protection member provided to cover the element,
- wherein the protection member includes a hole portion, and
- wherein the sensor is inserted into the hole portion to penetrate through the hole portion.
13 more elements
An image forming apparatus comprising:
- an image forming unit configured to form an image on a recording medium;
- and
- a sheet conveyance device configured to convey a sheet,
- wherein the sheet conveyance device includes:
- a sheet stacking portion on which sheets are stacked;
- a sheet feeding unit configured to feed sheets stacked on the sheet stacking portion;
- a conveyance guide disposed on a downstream side of the sheet feeding unit in a sheet conveyance direction;
- and
- a sensor unit disposed under the conveyance guide,
- wherein the sensor unit includes:
- a sensor configured to detect a sheet conveyed along the conveyance guide, via an opening formed on the conveyance guide;
- a control circuit board on which the sensor and an element electrically connected to the sensor are provided;
- and
- a protection member provided to cover the element,
- wherein the protection member includes a hole portion, and
- wherein positioning of the protection member with respect to the control circuit board is performed using the hole portion of the protection member and an outer circumferential surface of the sensor.
13 more elements
A sensor unit for acquiring information about a conveyed sheet, the sensor unit comprising:
- a sensor configured to detect a conveyed sheet;
- a control circuit board on which the sensor and an element electrically connected to the sensor are provided;
- and
- a protection member provided to cover the element,
- wherein the protection member includes a hole portion, and
- wherein the sensor is inserted into the hole portion to penetrate through the hole portion.
3 more elements
A sensor unit for acquiring information about a conveyed sheet, the sensor unit comprising:
- a sensor configured to detect a conveyed sheet;
- a control circuit board on which the sensor and an element electrically connected to the sensor are provided;
- and
- a protection member provided to cover the element,
- wherein the protection member includes a hole portion, and
- wherein positioning of the protection member with respect to the control circuit board is performed using the hole portion of the protection member and an outer circumferential surface of the sensor.
3 more elements
Dependencies are inferred from the claim text.