# US 10,307,929 B2 · Punching apparatus

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- Number: US 10,307,929 B2
- Document ID: US10307929B2
- Status: Granted
- Kind: B2
- Application number: 15/428,166
- Filed: 2017-02-09
- Published: 2017-08-24
- Granted: 2019-06-04
- Earliest claimed: 2016-02-22
- Assignees: Canon Finetech Nisca Inc.
- Applicants: Canon Finetech Nisca Inc.
- Inventors: Yutaka Akaike
- Web page: https://patentgrep.com/patent/US10307929B2

## CPC

- B26F 1/14: Punching tools; Punching dies
- B26D 7/18: Means for removing cut-out material or waste
- B65H 35/0086: {using movable cutting elements}
- G03G 15/6582: {Special processing for irreversibly adding or changing the sheet copy material characteristics or its appearance, e.g. stamping, annotation printing, punching}
- B26D 2007/0018: {Trays, reservoirs for waste, chips or cut products}
- B42C 1/12: Machines for both collating or gathering and permanently attaching together the sheets or signatures
- G03G 2215/00818: Punch device
- B26F: PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING (marking-out, perforating or making buttonholes A41H25/00; shoemaking A43D; surgery A61B; punching metal B21D; drilling metal B23B; cutting of metal by applying heat locally, e.g. flame cutting, B23K; cutting by abrasive fluid jets B24C5/02; details common to machines for severing B26D; drilling wood B27C; drilling stone B28D; working of plastics or substances in a plastic state B29; making boxes, cartons, envelopes or bags, of paper or similarly worked materials, e.g. metal foil, B31B; of glass C03B; of leather C14B; of textile materials D06H; for light guides G02B6/25; of tickets G07B)
- B26D: CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING (for growing crops or plants A01D, A01G; for fodder or straw A01F; for bulk butter A01J; for dough A21C; slaughtering A22B; for tobacco, cigars or cigarettes A24; marking-out, perforating or making buttonholes A41H25/00; manufacturing footwear A43D; brushmaking A46D; surgery A61B; disintegrating, mincing or shredding in general B02C; cutting wire, making pins or nails B21F, B21G; of the kind used formetal B23; cutting by abrasive fluid jets B24C5/02; hand-held cutting tools B26B; perforating, cutting-out, stamping-out or punching, or severing by means other than cutting B26F; for wood B27; for stone B28D; working of plastics or substances in a plastic state B29; making boxes, cartons, envelopes or bags, of paper or similarly worked materials, e.g. metal foil, B31B; article or web delivery apparatus incorporating cutting or line-perforating devices B65H35/00; for leather or upholstery B68, C14B; for glass C03B; making matches C06F; for peat C10F; for sugar C13B45/00; for textile materials D06H; civil engineering, building, mining, see Section E; for light guides G02B6/25; cutting processed photographic material G03D15/04)
- B65H: HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- G03G: ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- B42C: BOOKBINDING (cutting or perforating machines, devices or tools B26; folding sheets or webs B31F; ornamenting books B44)

## Abstract

A punching apparatus, including: a punching portion configured to punch a sheet; and a chad box configured to store a chad of a sheet punched by the punching portion, wherein the chad box includes: a first inner wall portion formed of an insulator; and a second inner wall portion formed of a conductor and arranged above the first inner wall portion.

## Claims

### Claim 1

A punching apparatus, comprising:
a punching portion which is configured to punch a sheet;
a chad box which includes a bottom surface, a first inner wall surface, a second inner wall surface located adjacent to the first inner wall surface, a third inner wall surface located adjacent to the second inner wall surface, and a fourth inner wall surface located adjacent to the third inner wall surface and the first inner wall surface, a space surrounded by the bottom surface, the first inner wall surface, the second inner wall surface, the third inner wall surface, and the fourth inner wall surface being configured to store a chad of a sheet punched by the punching portion, the chad box being formed of resin;
a conductive wire which extends in a horizontal direction along the first inner wall surface, the second inner wall surface, the third inner wall surface, and the fourth inner wall surface at a predetermined height from the bottom surface;
a first support portion which is configured to support the conductive wire along the first inner wall surface and is provided in the space;
a second support portion which is configured to support the conductive wire along the second inner wall surface and is provided in the space;
a third support portion which is configured to support the conductive wire along the third inner wall surface and is provided in the space; and
a fourth support portion which is configured to support the conductive wire along the fourth inner wall surface and is provided in the space.

### Claim 2 (depends on 1)

A punching apparatus according to claim 1, further comprising a detector configured to detect chads in the chad box,
wherein the detector is arranged above the conductive wire.

### Claim 3 (depends on 2)

A punching apparatus according to claim 2, wherein the detector detects that the chad box is full of chads.

### Claim 4 (depends on 1)

A punching apparatus according to claim 1, further comprising a ground member configured to ground the conductive wire.

### Claim 5 (depends on 1)

A punching apparatus according to claim 1, wherein the conductive wire is made of metal.