# US 2014/0153994 A1 · Transport device, transport method, image forming apparatus, and image forming method

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- Number: US 2014/0153994 A1
- Document ID: US20140153994A1
- Status: Published application
- Kind: A1
- Application number: 13/887,747
- Filed: 2013-05-06
- Published: 2014-06-05
- Earliest claimed: 2012-11-30
- Assignees: Fuji Xerox Co., Ltd.
- Applicants: Fuji Xerox Co., Ltd.
- Inventors: Satoshi KUBOTA; Tomohiro YAMADA; Ayumu ONO
- Web page: https://patentgrep.com/patent/US20140153994A1

## CPC

- B65H 7/06: responsive to presence of faulty articles or incorrect separation or feed (B65H7/14 takes precedence)
- B41J 11/42: Controlling {printing material conveyance for accurate alignment of the printing material with the printhead; Print registering}
- B41J 11/70: cutting perpendicular to the direction of paper feed
- B65H 2511/11: Length
- B65H 2511/22: Distance
- B65H 2513/10: Speed
- B65H 2801/27: Devices located downstream of office-type machines
- Y10T 83/04: Processes
- Y10T 83/6572: With additional mans to engage work and orient it relative to tool station
- B65H: HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B41J: TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A transport device includes a transport unit that transports a paper sheet, a cutter unit that cuts the paper sheet, and a controller that, when transport of the paper sheet is to be halted, controls the transport unit so that the transport unit halts an ideal cut line of the paper sheet corresponding to a specified length of the paper sheet at a more upstream side in a direction of the transport of the paper sheet when a specified length of the paper sheet is shorter than a threshold length than when the specified length of the paper sheet is longer than the threshold length.

## Claims

### Claim 1

A transport device comprising:
a transport unit that transports a paper sheet;
a cutter unit that cuts the paper sheet; and
a controller that, when transport of the paper sheet is to be halted, controls the transport unit so that the transport unit halts an ideal cut line of the paper sheet corresponding to a specified length of the paper sheet at a more upstream side in a direction of the transport of the paper sheet when a specified length of the paper sheet is shorter than a threshold length than when the specified length of the paper sheet is longer than the threshold length.

### Claim 2 (depends on 1)

The transport device according to claim 1, wherein the controller controls the transport unit so that the transport unit halts the transport of an ideal cut line of a paper sheet, subsequent to a preceding paper sheet cut by the cutter unit, at a more upstream side in the direction of the transport of the paper sheet when the length of the subsequent paper sheet is shorter than a threshold length than when the length of the subsequent paper sheet is longer than the threshold length.

### Claim 3 (depends on 1)

The transport device according to claim 1, wherein the controller switches between a first mode performed when a length of the paper sheet is longer than a threshold length and a second mode performed when the length of the paper sheet is shorter than the threshold length, wherein in the first mode, when a leading end of the paper sheet is halted, the ideal cut line of the paper sheet is also caused to be halted, and wherein in the second mode, the ideal cut line is halted so that a length between the ideal cut line and the cutter unit becomes longer than a distance over which the transport unit transports the paper sheet for the shortest possible period of time from startup to halting of the transport unit.

### Claim 4 (depends on 1)

The transport device according to claim 1, further comprising an accommodating unit that accommodates curving of the paper sheet occurring downstream of the cutter unit in a paper transport path in the direction of the transport of the paper sheet,
wherein the controller adjusts a location where the ideal cut line is halted, by modifying an amount of curving occurring in the paper sheet in the accommodating unit.

### Claim 5

A transport device comprising:
a feeder unit that feeds a paper sheet that is to be cut for use;
a cutter unit that cuts the paper sheet fed by the feeder unit at an ideal cut line so that a cut paper sheet has a specified length;
a first transport section that transports and then halts the paper sheet fed from the feeder unit so that the ideal cut line of the paper sheet is placed at the cutter unit;
a second transport section that transports a preceding paper sheet cut by the cutter unit upstream of the cutter unit in the direction of the transport of the paper sheet, and halts the transport of the preceding paper sheet at a standby position;
a third transport section that transports from the cutter unit a paper sheet subsequent to the cut preceding paper sheet toward the second transport section; and
a modifying unit that modifies a paper sheet spacing between the preceding paper sheet and the subsequent paper sheet by changing a transport start timing of the transport of the subsequent paper sheet by the third transport unit in accordance with the length of the paper sheet if a timing when the second transport section halts the transport of the preceding paper sheet comes before a timing when the first transport section halts the transport of the subsequent paper sheet to place the ideal cut line of the subsequent paper sheet at the cutter unit.

### Claim 6 (depends on 5)

The transport device according to claim 5, wherein the modifying unit modifies the paper sheet spacing if a timing of decelerating a transport speed of the subsequent paper sheet to place the ideal cut line of the subsequent paper sheet at the cutter unit comes when the third transport section varies the transport speed of the subsequent paper sheet.

### Claim 7 (depends on 5)

The transport device according to claim 5, wherein the modifying unit modifies the paper sheet spacing by delaying a transport start timing of the subsequent paper sheet by the third transport section.

### Claim 8 (depends on 7)

The transport device according to claim 7, wherein the third transport section comprises a stepping motor as a driving source, and
wherein when the second transport section halts the transport of the preceding paper sheet at the standby position followed by the third transport section halting the transport of the subsequent paper sheet, the modifying unit modifies the paper sheet spacing if a timing of decelerating the transport speed of the subsequent paper sheet to place the ideal cut line of the subsequent sheet at the cuter unit comes when the stepping motor is accelerating after the third transport section halts the transport of the subsequent paper sheet once.

### Claim 9

An image forming apparatus comprising:
a transport unit that transports a paper sheet;
a cutter unit that cuts the paper sheet;
a controller that, when transport of the paper sheet is to be halted, controls the transport unit so that the transport unit halts an ideal cut line of the paper sheet corresponding to a specified length of the paper sheet at a more upstream side in a direction of the transport of the paper sheet when a specified length of the paper sheet is shorter than a threshold length than when the specified length of the paper sheet is longer than the threshold length; and
an image forming unit that forms an image on the paper sheet transported by the transport unit.

### Claim 10

A transport method comprising:
transporting a paper sheet;
cutting the paper sheet; and
when transport of the paper sheet is to be halted, controlling the transport of the paper sheet so that an ideal cut line of the paper sheet corresponding to a specified length of the paper sheet halts at a more upstream side in a direction of the transport of the paper sheet when a specified length of the paper sheet is shorter than a threshold length than when the specified length of the paper sheet is longer than the threshold length.

### Claim 11

A transport method comprising:
feeding a paper sheet that is to be cut for use;
cutting the fed paper sheet at an ideal cut line so that a cut paper sheet has a specified length;
in a first transport operation, transporting and then halting the fed paper sheet so that the ideal cut line of the paper sheet is placed at a cutting position;
in a second transport operation, transporting a preceding cut paper sheet upstream of the cutting position in the direction of the transport of the paper sheet, and halting the transport of the preceding cut paper sheet at a standby position;
in a third transport operation, transporting from the cutting position a paper sheet subsequent to the preceding cut paper sheet for the second transport operation; and
modifying a paper sheet spacing between the preceding paper sheet and the subsequent paper sheet by changing a transport start timing of the transport of the subsequent paper sheet in the third transport operation in accordance with the length of the paper sheet if a timing when the second transport operation halts the transport of the preceding paper sheet comes before a timing when the first transport operation halts the transport of the subsequent paper sheet to place the ideal cut line of the subsequent paper sheet at the cutting position.

### Claim 12

An image forming method comprising:
transporting a paper sheet;
cutting the paper sheet;
when transport of the paper sheet is to be halted, controlling the transport of the paper sheet so that an ideal cut line of the paper sheet corresponding to a specified length of the paper sheet halts at a more upstream side in a direction of the transport of the paper sheet when a specified length of the paper sheet is shorter than a threshold length than when the specified length of the paper sheet is longer than the threshold length; and
forming an image on the transported paper sheet.