# US 7,412,201 B2 · Post-processing trimming apparatus and image-forming apparatus

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- Number: US 7,412,201 B2
- Document ID: US7412201B2
- Status: Granted
- Kind: B2
- Application number: 11/042,983
- Filed: 2005-01-25
- Published: 2005-12-15
- Granted: 2008-08-12
- Earliest claimed: 2004-06-10
- Assignees: Konica Minolta Business Technologies, Inc.
- Inventors: Hiroyuki Wakabayashi; Toshio Shida; Masaaki Uchiyama; Masato Hattori; Norishige Kato; Kenji Kawatsu
- Web page: https://patentgrep.com/patent/US7412201B2

## CPC

- 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 1/08: of the guillotine type
- B26D 5/16: Cam means
- B26D 7/025: {acting upon planar surfaces (B26D7/04 takes precedence)}
- G03G 2215/00814: Cutter
- Y10T 83/9454: Reciprocable type
- G03G: ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- 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)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A post-processing apparatus which has a trimming apparatus for trimming an edge of sheets to make booklets, wherein the trimming apparatus has an inserting means for insertion of sheets into trimming process section of the trimming apparatus, an edge sustaining member and an edge holding member for pinching the vicinity of the edge of the sheet during the trimming process and a shifting means to make the opening size variable for receiving sheets by changing the relative position between the edge holding member and the edge sustaining member and a controller for controlling the shifting means to change the opening size between the edge holding member and the edge sustaining member according to the number of the sheets to be trimmed.

## Claims

### Claim 1

A post-processing apparatus equipped with a trimming apparatus, which carries out a trimming process on an edge of a bundle of sheets, comprising,
an inserting mechanism which inserts the bundle of sheets into a trimming process section of the trimming apparatus,
an edge holding member and an edge sustaining member which pinch a vicinity of the edge of the bundle of sheets inserted into the trimming process section,
a shifting mechanism which changes a relative position between the edge holding member and the edge sustaining member and makes an opening size between the edge holding member and the edge sustaining member variable before a pinching motion, and
a controller for receiving information about the number of sheets composing the bundle of sheets from an image forming apparatus;
said controller which controls the shifting mechanism to adjust the opening size depending on the number of sheets composing the bundle of sheets to be trimmed so as to make at least one of the edge holding member and the edge sustaining member stand by while maintaining the opening size before starting of a pinching motion thereof and before the bundle of sheets is inserted into the trimming process section by the inserting mechanism.

### Claim 2 (depends on 1)

The post-processing apparatus of claim 1, wherein the controller makes the edge holding member stand by at a first opening position when the number of sheets composing the bundle of sheets to be trimmed is greater than a predetermined number, and then, makes the edge holding member stand by at a second opening position closer to the edge sustaining member than the first opening position when the number of the sheets is not greater than the predetermined number, and controls the shifting mechanism to move the edge holding member toward the edge sustaining member from each of the opening positions to pinch the bundle of sheets before the trimming process.

### Claim 3 (depends on 2)

The post-processing apparatus of claim 2 comprising a first detector which detects that the edge holding member is located at the first opening position and a second detector which detects that the edge holding member is located at the second opening position.

### Claim 4 (depends on 1)

The post-processing apparatus of claim 1, wherein the shifting mechanism is comprised to allow both the edge holding member and the edge sustaining member to be movable.

### Claim 5 (depends on 1)

An image-forming apparatus which is equipped with an image-forming portion to form an image on a sheet and has the post-processing apparatus of claim 1.

### Claim 6 (depends on 5)

The image-forming apparatus of claim 5, wherein the controller of the post-processing apparatus controls the shifting mechanism based on information regarding the number of sheets to be trimmed, transmitted from an image-forming apparatus controller installed in the image-forming apparatus.