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US 11,590,672 B2Granted
Sheet punching apparatus
AssigneeCanon Finetech Nisca Inc.
InventorYutaka Akaike
Life of this patent
Estimating the term…
Abstract
A sheet punching apparatus includes a waste box formed of insulating resin, a detection sensor provided in the waste box and configured to detect the amount of paper chips in the waste box, and a conductive member disposed such that at least a part thereof is positioned in midair in the waste box below the detection sensor. With this configuration, erroneous detection of the detection sensor can be prevented.
Claims7
A sheet punching apparatus that punches a sheet, comprising:
- a punching unit that applies punching to a sheet;
- a waste box formed of insulating resin and configured to store paper chips generated through sheet punching by the punching unit;
- a detection unit provided at a predetermined position in the waste box and configured to detect an amount of the paper chips stored in the waste box;
- a conductive member stretched between two inner surfaces of the waste box, and
- a grounding spring connected to the conductive member, wherein
- the conductive member is disposed above a bottom surface of the waste box and below a height of the detection unit,
- the conductive member has a first end part fixed to a first inner surface of the waste box and a second end part fixed to a second inner surface opposed to the first inner surface and is stretched between the first and second inner surfaces, and
- the grounding spring is connected to one of the first and second end parts.
5 more elements
A sheet punching apparatus that punches a sheet, comprising:
- a punching unit that applies punching to a sheet;
- a waste box configured to store paper chips generated through sheet punching by the punching unit;
- a detection unit provided at a predetermined position in the waste box and configured to detect an amount of the paper chips stored in the waste box;
- and
- a conductive member configured to provide a potential difference from a paper chip to be larger than the potential difference between the paper chip and an inner surface of the waste box,
- wherein
- the conductive member is formed into a U-shape having a center part and is fixed to a bottom surface of the waste box at both its end portions, and
- the center part of the conductive member is disposed in midair in the waste box below a height of the detection unit.
5 more elements
Dependencies are inferred from the claim text.