WO2017010003A1 - Imprimante à jet d'encre - Google Patents

Imprimante à jet d'encre Download PDF

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Publication number
WO2017010003A1
WO2017010003A1 PCT/JP2015/070429 JP2015070429W WO2017010003A1 WO 2017010003 A1 WO2017010003 A1 WO 2017010003A1 JP 2015070429 W JP2015070429 W JP 2015070429W WO 2017010003 A1 WO2017010003 A1 WO 2017010003A1
Authority
WO
WIPO (PCT)
Prior art keywords
rollers
ink
ink head
printing paper
conveyance guide
Prior art date
Application number
PCT/JP2015/070429
Other languages
English (en)
Japanese (ja)
Inventor
郁夫 武田
平田　幸司
脇原　純二
Original Assignee
富士通周辺機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 富士通周辺機株式会社 filed Critical 富士通周辺機株式会社
Priority to PCT/JP2015/070429 priority Critical patent/WO2017010003A1/fr
Priority to JP2017528258A priority patent/JP6356917B2/ja
Publication of WO2017010003A1 publication Critical patent/WO2017010003A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J13/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in short lengths, e.g. sheets
    • B41J13/10—Sheet holders, retainers, movable guides, or stationary guides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/135—Nozzles
    • B41J2/165—Prevention or detection of nozzle clogging, e.g. cleaning, capping or moistening for nozzles

Definitions

  • This application relates to an inkjet printer.
  • inkjet printers have become increasingly popular.
  • Some inkjet printers include various mechanisms for maintaining the ink head (see, for example, Patent Document 1).
  • an ink jet printer may perform a dummy jet that prevents nozzle clogging.
  • the dummy jet is ejection of ink not intended for printing.
  • the dummy jet is performed, for example, when performing continuous printing with an inkjet printer.
  • the present application discloses an ink jet printer in which dirt due to a dummy jet does not occur.
  • An ink jet printer which is an ink head that ejects ink downward, and a plurality of rollers that support printing paper that passes under the ink head, and is arranged in parallel to each other with an interval just below the ink head
  • FIG. 1 is a diagram illustrating an inkjet printer according to an embodiment.
  • FIG. 2 is a diagram illustrating a correspondence relationship between the conveyance guide and the driving mechanism.
  • FIG. 3 is a view showing a conveyance guide and an arm.
  • FIG. 4 is a diagram illustrating a drive mechanism that moves the conveyance guide.
  • FIG. 5 shows the movement of the cap.
  • FIG. 6 is a diagram illustrating a state in which the transport guide is retracted from between the transport rollers.
  • FIG. 7 is a diagram illustrating an ink discharge state during the dummy jet.
  • FIG. 8 is a diagram illustrating a loading state of the printing paper in a state where there is no conveyance guide.
  • FIG. 9 is a diagram showing the positional relationship of the ink heads.
  • FIG. 1 is a diagram illustrating an inkjet printer according to an embodiment.
  • the ink jet printer 1 according to this embodiment includes an ink head 2 and a paper feed mechanism 3.
  • the ink jet printer 1 includes, in addition to the ink head 2 and the paper feed mechanism 3, an electronic circuit, a sensor, a drive mechanism, an ink tank, and the like (not shown).
  • the ink head 2 includes a nozzle that ejects ink, a fine ink chamber that pressurizes ink ejected from the nozzle, and the like.
  • the ink head 2 discharges the ink pressurized in the ink chamber downward from the nozzle.
  • the ink head 2 has a number of nozzles arranged so as to cross the feeding direction of the printing paper 6. That is, the ink head 2 is a type of ink head that is used in a fixed state during printing, and does not reciprocate during printing.
  • the paper feed mechanism 3 includes three transport rollers 4 that support the printing paper 6 that passes under the ink head 2.
  • the transport rollers 4 are arranged in order along the feeding direction of the printing paper.
  • the transport rollers 4 are arranged in parallel with each other at an appropriate interval directly below the ink head 2.
  • the paper feed mechanism 3 includes two conveyance guides 5 that are arranged between the conveyance rollers 4 and support the printing paper 6 that passes above the conveyance rollers 4.
  • the conveyance guide 5 is an elongated plate-like member that extends in parallel with each conveyance roller 4.
  • the transport guide 5 forms an upward plate surface between the transport rollers 4, thereby preventing the front end of the printing paper 6 passing under the ink head 2 from entering between the transport rollers 4.
  • the conveyance guide 5 guides the printing paper 6 to an appropriate path by preventing the front end of the printing paper 6 from entering between the conveyance rollers 4.
  • the paper feeding mechanism 3 can feed a long continuous paper, a cut paper cut to a predetermined size, and other various printing papers 6.
  • the paper feed mechanism 3 includes a scuff roller 7 that pulls the printing paper 6 that has passed through the upper side of the conveying roller 4 and a tractor 8 that adjusts the position and the traveling direction of the printing paper 6 that passes through the upper side of the conveying roller 4.
  • the scuff roller 7 sandwiches the printing paper 6 with a pair of rollers having a soft peripheral surface, and is driven to rotate by a motor (not shown), thereby pulling the printing paper 6 that has passed over the transport roller 4.
  • the printing paper 6 in a state where the sprocket hole is fitted to the tractor 8 is tensioned by being pulled by the scuff roller 7, and is stretched directly under the ink head 2.
  • FIG. 2 is a diagram showing the correspondence between the transport guide 5 and the drive mechanism.
  • the upper diagram shows the drive mechanism 9, and the lower diagram shows the transport guide 5.
  • the drive mechanism 9 has a plurality of gears 10.
  • the transport guide 5 is connected by an arm 11 to a rotary shaft 12 disposed at a side of the transport guide 5 with an appropriate distance from the transport guide 5.
  • the rotating shaft 12 is an axis having an axis parallel to the transport roller 4 as a rotation center.
  • the rotary shaft 12 is fixed to the center of the specific gear 10 and rotates at an angle within a predetermined movable range when the drive mechanism 9 is operated.
  • FIG. 3 is a view showing the conveyance guide 5 and the arm 11.
  • the arm 11 is processed in an L shape so as not to interfere with the transport roller 4.
  • the conveyance guide 5 is an elongated member having an L-shaped cross section.
  • the conveyance guide 5 forms a support surface 13 so as to cover a gap between the conveyance rollers 4 by adopting a posture in which a flat plate surface faces upward between the conveyance rollers 4. Therefore, the printing paper 6 passing above the respective transport rollers 4 is supported by the support surface 13 and guided to an appropriate course.
  • FIG. 4 is a diagram showing a drive mechanism 9 that moves the conveyance guide 5.
  • the ink jet printer 1 includes a cap 14 that prevents the ink of the ink head 2 from drying when not printing.
  • the cap 14 is a lateral slide type cap that can be taken in and out of the ink head 2 and covers the ink head 2 during non-printing.
  • the cap 14 is slid by the belt 16 suspended on the pulley 15 of the drive mechanism 9. That is, the conveyance guide 5 and the cap 14 use the drive mechanism 9 together. Therefore, when the drive mechanism 9 is activated, the conveyance guide 5 moves in conjunction with the opening / closing operation of the cap 14.
  • Both the conveyance guide 5 and the cap 14 are used in a state of being retracted from the lower side of the ink head 2 during printing. Therefore, the inkjet printer 1 realizes a reduction in the number of parts by moving the conveyance guide 5 and the cap 14 by the drive mechanism 9 which is a common drive source.
  • FIG. 5 shows the movement of the cap 14.
  • the belt 16 is suspended along the feeding direction of the printing paper 6. Therefore, when the pulley 15 around which the belt 16 is suspended rotates, the cap 14 moves along the feeding direction of the printing paper 6.
  • the cap 14 is disposed below the ink head 2, the ejection port of the ink head 2 is covered with the cap 14.
  • the ejection port of the ink head 2 is covered with the cap 14, drying of the ink in the ink head 2 is suppressed.
  • the cap 14 is retracted from the lower side of the ink head 2, the ejection port of the ink head 2 is opened. When the ejection port of the ink head 2 is opened, the ink head 2 can eject ink onto the printing paper 6.
  • FIG. 6 is a view showing a state in which the transport guide 5 is retracted from between the transport rollers 4.
  • the ink jet printer 1 adjusts the angle of the rotary shaft 12 with the drive mechanism 9, and disposes the transport guide 5 between the transport rollers 4 at least during loading of the printing paper 6. Further, the inkjet printer 1 adjusts the angle of the rotary shaft 12 by the drive mechanism 9 and retracts the conveyance guide 5 from between the conveyance rollers 4 at least during printing. Since the transport guide 5 is retracted from between the transport rollers 4 during printing, the ink ejected from the ink head 2 during printing does not adhere to the transport guide 5.
  • FIG. 7 is a diagram showing an ink discharge state during the dummy jet.
  • an arrow indicated by a broken line indicates an ink ejection state.
  • the ink jet printer 1 may perform a dummy jet for the purpose of preventing clogging of the nozzles of the ink head 2.
  • the dummy jet is performed automatically or manually at an appropriate timing based on various conditions such as printing amount, printing time, ambient temperature, and ink characteristics. Since the dummy jet is ejection of ink that is not intended for printing, ink is ejected from all nozzles of the ink head 2 regardless of the size of the printing paper 6 and the presence or absence of the printing paper 6.
  • the horizontal width of the printing paper 6 is smaller than the horizontal width of all the nozzles of each ink head 2, a part of the ink ejected from the ink head 2 passes through the printing paper 6 as shown in FIG. Then, it falls below the printing paper 6.
  • the ink jet printer 1 of the present embodiment retracts the transport guide 5 from between the transport rollers 4 at least during printing, the ink ejected from the ink head 2 does not adhere to the transport guide 5.
  • the transport rollers 4 are arranged in parallel with each other at an appropriate interval directly below the ink head 2, so that the ink ejected from the ink head 2 is applied to the transport roller 4. Does not adhere. Therefore, in the case of the ink jet printer 1 of the present embodiment, the components of the paper feed mechanism 3 such as the transport guide 5 that guides the print paper 6 are not soiled even when the dummy jet is performed.
  • the components of the paper feed mechanism 3 are not soiled, so the printing paper 6 is not soiled with ink.
  • the ink ejected downward through the transport rollers 4 falls to a tray (not shown) provided at the lower part of the inkjet printer 1.
  • the conveyance guide 5 is disposed between the conveyance rollers 4 at least during loading of the printing paper 6, so that the leading edge of the printing paper 6 is sent to the lower side of the conveyance roller 4. There is no end.
  • FIG. 8 is a diagram illustrating the loading state of the printing paper 6 in the state where the conveyance guide 5 is not provided. If the conveyance guide 5 is not provided, the leading edge of the printing paper 6 may hang down due to its own weight during loading of the printing paper 6, and the printing paper 6 may be sent to the lower side of the conveyance roller 4. However, since the inkjet printer 1 of the present embodiment includes the conveyance guide 5, the leading edge of the printing paper 6 hangs down under its own weight during loading of the printing paper 6, and the printing paper 6 is sent to the lower side of the conveyance roller 4. There is no end.
  • FIG. 9 is a diagram showing the positional relationship of the ink head 2.
  • the ink jet printer 1 according to the present embodiment includes a plurality of ink heads 2 having a width of about several centimeters to a few tens of centimeters whose width is less than the width of the printing paper 6.
  • the ink heads 2 are alternately arranged in two rows in a direction crossing the feeding direction of the printing paper 6 as shown in FIG.
  • the ink jet printer 1 can be used even if the width of the ink head 2 is less than the width of the printing paper 6.
  • the ink jet printer 1 of the present embodiment is not limited to the one provided with a plurality of ink heads 2.
  • the inkjet printer 1 according to the embodiment may include one ink head 2 having a long lateral width.
  • the ink jet printer 1 includes one ink head 2, only two transport rollers 4 and only one transport guide 5 are required.
  • the conveyance guide 5 is rotated by the rotation shaft 12.
  • the conveyance guide 5 disposed between the conveyance rollers 4 is not rotated by the rotation shaft 12, and the conveyance guide 4 is rotated by the rotation shaft 12. You may evacuate from between.
  • the conveyance guide 5 can be retracted using, for example, a slide mechanism, a winding mechanism, and other various mechanisms.

Landscapes

  • Ink Jet (AREA)
  • Handling Of Sheets (AREA)

Abstract

L'imprimante à jet d'encre selon la présente invention comprend : une tête d'impression qui projette de l'encre vers le bas; une pluralité de rouleaux de support pour du papier d'impression passant sous la tête d'impression, la pluralité de rouleaux étant agencés de manière à être espacés les uns des autres et parallèles les uns aux autres, au moins directement en dessous de la tête d'impression; des guides de transport, disposés entre la pluralité de rouleaux, pour supporter le papier d'impression passant au-dessus de la pluralité de rouleaux; et un mécanisme d'entraînement qui rétracte les guides de transport à partir de leur position entre la pluralité de rouleaux, au moins pendant l'impression.
PCT/JP2015/070429 2015-07-16 2015-07-16 Imprimante à jet d'encre WO2017010003A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/JP2015/070429 WO2017010003A1 (fr) 2015-07-16 2015-07-16 Imprimante à jet d'encre
JP2017528258A JP6356917B2 (ja) 2015-07-16 2015-07-16 インクジェットプリンタ

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2015/070429 WO2017010003A1 (fr) 2015-07-16 2015-07-16 Imprimante à jet d'encre

Publications (1)

Publication Number Publication Date
WO2017010003A1 true WO2017010003A1 (fr) 2017-01-19

Family

ID=57758014

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2015/070429 WO2017010003A1 (fr) 2015-07-16 2015-07-16 Imprimante à jet d'encre

Country Status (2)

Country Link
JP (1) JP6356917B2 (fr)
WO (1) WO2017010003A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000191195A (ja) * 1998-12-25 2000-07-11 Hitachi Koki Co Ltd インクジェット記録装置
JP2000313147A (ja) * 1999-04-28 2000-11-14 Toshiba Tec Corp レジ用インクジェットプリンタ
JP2010126268A (ja) * 2008-11-25 2010-06-10 Olympus Corp 画像記録装置
JP2015063361A (ja) * 2013-09-24 2015-04-09 ブラザー工業株式会社 画像記録装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4222605B2 (ja) * 2003-09-18 2009-02-12 株式会社リコー 画像形成装置
KR20060116548A (ko) * 2005-05-10 2006-11-15 삼성전자주식회사 잉크젯 프린터

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000191195A (ja) * 1998-12-25 2000-07-11 Hitachi Koki Co Ltd インクジェット記録装置
JP2000313147A (ja) * 1999-04-28 2000-11-14 Toshiba Tec Corp レジ用インクジェットプリンタ
JP2010126268A (ja) * 2008-11-25 2010-06-10 Olympus Corp 画像記録装置
JP2015063361A (ja) * 2013-09-24 2015-04-09 ブラザー工業株式会社 画像記録装置

Also Published As

Publication number Publication date
JPWO2017010003A1 (ja) 2018-02-01
JP6356917B2 (ja) 2018-07-11

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