Printing device

Patent metadata

Field	Value
Publication number	US-2016144643-A1
Application number	US-201615012163-A
Country	US
Kind code	A1
Filing date	Feb 1, 2016
Priority date	Aug 2, 2013
Publication date	May 26, 2016
Grant date	—

Abstract

A printing device includes an image recording portion which records an image on a sheet, an image defect detection unit which detects the sheet on which image defects occur, a setting unit by which a sorting number of copies of the sheets is set, a first stamper unit which attaches ink to a leading end edge of the sheet on which the image defects occur, and a second stamper unit which is disposed so as to be arranged with the first stamper unit in a sheet width direction and attaches ink to the leading end edge of the sheet corresponding to the sorting number of copies.

First claim

What is claimed is:

1 . A printing device, comprising:
a sheet feed portion which feeds a recording medium sheet; a sheet discharging portion on which recording medium sheets having images recorded are to be loaded; a conveyance portion which conveys the recording medium sheet from the sheet feed portion to the sheet discharging portion; an image recording portion which records an image on a surface of the conveyed recording medium sheet by the conveyance portion; an image defect detection unit which detects a recording medium sheet, on which image defects occur, among the recording medium sheets having the images recorded by the image recording portion; a first stamper unit which is provided on a downstream side of the image recording portion in the conveyance portion with respect to a conveyance direction of the recording medium sheet and attaches ink to a leading end edge of the recording medium sheet on which the image defects occur; a first stamp control unit which controls an operation of the first stamper unit based on detection results of the image defect detection unit; a receiving unit which receives an input of a number of sheets which is a unit of sorting when the recording medium sheets loaded on the sheet discharging portion are sorted by a definite number; a setting unit which sets the received number as a sorting number of sheets; a second stamper unit which is provided on the downstream side of the image recording portion in the conveyance portion with respect to the conveyance direction of the recording medium sheet and attaches ink to the leading end edge of the recording medium corresponding to the sorting number of sheets set by the setting unit; and a counting unit which counts a number of recording medium sheets conveyed to the second stamper unit; a second stamp control unit which controls an operation of the second stamper unit based on the number of the recording medium sheets conveyed to the second stamper unit and the sorting number of sheets set by the setting unit.

2 . The printing device according to claim 1 ,
wherein stamp performance positions, at which stamping which attaches ink to the recording medium sheet using the first stamper unit and the second stamper unit is performed, are same as each other in the conveyance direction of the conveyance portion, and wherein distances of the first stamper unit and the second stamper unit from positions corresponding to a center position of the recording medium sheet in a direction orthogonal to the conveyance direction of the conveyance portion are different from each other.

3 . The printing device according to claim 1 ,
wherein a kind of the ink used in the first stamper unit and a kind of the ink used in the second stamper unit are different from each other.

4 . The printing device according to claim 1 ,
wherein the ink which is used in the first stamper unit and the second stamper unit is formed of a highly water retentive material.

5 . The printing device according to claim 1 ,
wherein each of the first stamper unit and the second stamper unit includes: a stamp portion into which ink is impregnated, and a retractable mechanism which causes the stamp portion to protrude toward a stamp position of the recording medium sheet and retracts the stamp portion from the stamp position, and wherein in a state where the stamp portion protrudes toward the stamp position, the lead end edge of the recording medium conveyed by the conveyance portion abuts the stamp portion and ink is attached to the leading end edge, and the stamp portion is retracted from the stamp position by a force of the abutment.

6 . The printing device according to claim 5 ,
wherein the stamp portion is accommodated in a stamp container, and an opening/closing lid, which opens and closes the stamp container so as to be interlocked with the retractable mechanism and exposes and seals the stamp portion, is provided in the stamp container.

7 . The printing device according to claim 5 ,
wherein the first stamper unit includes: a stamp movement portion which moves the stamp portion between a standby position and the stamp position, and a position detection unit which detects whether the stamp portion is positioned at the standby position or the stamp position, and wherein the conveyance portion stops conveyance of the recording medium sheet when it is not detected that the stamp portion is positioned at the stamp position by the position detection unit after a predetermined period elapses from a timing when the stamp movement portion starts a movement which moves the stamp portion from the standby position to the stamp position.

8 . The printing device according to claim 7 ,
wherein the conveyance portion stops the conveyance of the recording medium sheet when it is not detected that the stamp portion is positioned at the standby position by the position detection unit in at least one of at the time of device operation start and at the time of print job change.

9 . The printing device according to claim 1 ,
wherein the conveyance portion includes a chain gripper, in which a plurality of grippers holding a leading end portion of the recording medium sheet between a pair of chains are provided at a position on the downstream side of the image recording portion in the conveyance direction of the conveyance portion, and on an upstream side of the sheet discharging portion, which discharges the recording medium sheet having images formed by the image recording portion, in the conveyance direction of the conveyance portion, and wherein the first stamper unit and the second stamper unit are provided inside the disposition position of the chain gripper.

10 . The printing device according to claim 9 ,
wherein the chain gripper is disposed along an inclined surface which has an upward inclination with respect to a horizontal surface, and wherein the first stamper unit and the second stamper unit are disposed in a depressed portion which is formed on the inclined surface.

11 . The printing device according to claim 1 ,
wherein the first stamper unit and the second stamper unit have a same configuration as each other.

12 . The printing device according to claim 1 ,
wherein the second stamp control unit operates the second stamper unit when the number of recording medium sheets except for the detected recording medium sheets having image defects reaches the set sorting number of sheets.

13 . The printing device according to claim 1 ,
wherein stamp performance positions, at which stamping which attaches ink to the recording medium sheet using the first stamper unit and the second stamper unit is performed, are same as each other in the conveyance direction of the conveyance portion.

Assignees

• Fujifilm Corp

Inventors

• Igarashi Hiroyuki
• Uemura Hiroshi

Classifications

• B41J29/46

  Applications of alarms, e.g. responsive to approach of end of line · CPC title

• B41K3/48

  for conveying intermittently to or from stamping station · CPC title

• B41K3/04

  and movable at right angles to the surface to be stamped · CPC title

• B41J11/0095

  Detecting means for copy material, e.g. for detecting or sensing presence of copy material or its leading or trailing end · CPC title

• B41J29/40

  Means for printing fixed, i.e. unchanging, matter in addition to selectable matter · CPC title