Sheet processing apparatus and image forming apparatus
AssigneeCanon Kabushiki Kaisha
InventorKenichi Hayashi
Life of this patent
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Abstract
A sheet processing apparatus having a laser processing unit, a collecting portion, and a detecting portion. The collecting portion is disposed below a laser processing position of the laser processing unit. The collecting portion collects a scrap of the sheet produced when the sheet is processed by the laser processing unit. The detecting portion is configured to detect the scrap collected into the collecting portion and reaching a predetermined height. A detection position of the detecting portion is lower than a processing range of the laser beam where processing by the laser beam is possible.
Claims10
A sheet processing apparatus comprising:
- a laser processing unit configured to cut a sheet by irradiating the sheet with a laser beam;
- a controller configured to control an operation of the laser processing unit;
- a collecting portion provided below a laser processing position of the laser processing unit, the collecting portion being configured to collect a scrap of the sheet produced when the laser processing unit cuts the sheet;
- a detecting portion configured to detect the scrap of the sheet reaching a predetermined height in the collecting portion;
- and
- a region detecting portion configured to detect the scrap present in a region from the detection position of the detecting portion to the laser processing position,
- wherein the laser processing unit comprises a scanning portion configured to scan a laser beam,
- wherein a detection position of the detecting portion is set lower than a processing range of the laser beam irradiated by the laser processing unit, the processing range being a range where cutting by the laser beam is possible, and
- wherein the controller drives the scanning portion so that an irradiation region of the laser beam matches a sheet conveying region when the scrap is detected by the region detecting portion.
An image forming apparatus comprising:
- an image forming portion configured to form an image on a sheet;
- and
- a sheet processing apparatus being configured to cut the sheet on which an image is formed by the image forming portion, the sheet processing apparatus comprising:
- a laser processing unit configured to cut a sheet by irradiating the sheet with a laser beam;
- a controller configured to control an operation of the laser processing unit;
- a collecting portion provided below a laser processing position of the laser processing unit, the collecting portion being configured to collect a scrap of the sheet produced when the laser processing unit cuts the sheet;
- a detecting portion configured to detect the scrap of the sheet reaching a predetermined height in the collecting portion;
- and
- a region detecting portion configured to detect the scrap present in a region from the detection position of the detecting portion to the laser processing position,
- wherein the laser processing unit comprises a scanning portion configured to scan a laser beam,
- wherein a detection position of the detecting portion is set lower than a processing range of the laser beam irradiated by the laser processing unit, the processing range being a range where cutting by the laser beam is possible, and
- wherein the controller drives the scanning portion so that an irradiation region of the laser beam matches a sheet conveying region when the scrap is detected by the region detecting portion.
Dependencies are inferred from the claim text.