EP0748697A1 - Tintenstrahldrucker mit Druckspalteinstellung eines Druckkopfes - Google Patents

Tintenstrahldrucker mit Druckspalteinstellung eines Druckkopfes Download PDF

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Publication number
EP0748697A1
EP0748697A1 EP96401273A EP96401273A EP0748697A1 EP 0748697 A1 EP0748697 A1 EP 0748697A1 EP 96401273 A EP96401273 A EP 96401273A EP 96401273 A EP96401273 A EP 96401273A EP 0748697 A1 EP0748697 A1 EP 0748697A1
Authority
EP
European Patent Office
Prior art keywords
roller
paper sheet
supporting
print head
guiding
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP96401273A
Other languages
English (en)
French (fr)
Inventor
Kwan-Bo Sim
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LG Electronics Inc
Original Assignee
LG Electronics Inc
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 LG Electronics Inc filed Critical LG Electronics Inc
Publication of EP0748697A1 publication Critical patent/EP0748697A1/de
Withdrawn legal-status Critical Current

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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
    • B41J25/00—Actions or mechanisms not otherwise provided for
    • B41J25/304—Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface
    • B41J25/308—Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface with print gap adjustment mechanisms
    • 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
    • B41J25/00—Actions or mechanisms not otherwise provided for
    • B41J25/304—Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface
    • B41J25/308—Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface with print gap adjustment mechanisms
    • B41J25/3082—Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface with print gap adjustment mechanisms with print gap adjustment means on the print head carriage, e.g. for rotation around a guide bar or using a rotatable eccentric bearing
    • 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

Definitions

  • the present invention relates to an ink jet printer head, and more particularly to an ink jet printer head gap controlling apparatus capable of regulating the gap between a print head and a paper sheet so that a variety of paper sheets can be automatically processed therethrough irrespective of the thicknesses of the paper sheets.
  • a conventional ink jet printer such as disclosed in Japanese Patent Publication No. 6-135090 includes a cartridge carrier 1 having a print head 4 at one end portion thereof and carried horizontally on a cartridge carrier axle 2, on which carrier an ink cartridge is to be placed.
  • a transfer roller 5 is provided for forwardly transferring a paper sheet picked up by a pickup roller (not illustrated).
  • a cradle 6 is inclined toward the transfer roller 5 for adhering the guided paper sheet to the transfer roller 5.
  • a printing platen 7 is located opposite the print head 4, on which platen 7 printing is to be performed on the paper sheet by the ink jetted from a nozzle (not illustrated) of the print head 4.
  • a combining hole 10 is formed in each side plate 15 of a carrier frame 18, into each of which combining holes 10 a bush 9 is inserted.
  • An eccentric bush 11 is rotatable in an eccentric bore within the bush 9.
  • An insertion hole 12 is displaced a certain distance from the center of the eccentric bush 11, and an end portion of the carrier axle 2 is insertingly fixed therein.
  • a selecting arm 13 formed on the outer periphery of an extension 14 extended from the eccentric bush 11, for controlling the position of the print head 4 in accordance with the thickness of each printing paper sheet.
  • the pickup roller (not illustrated) picks up a top sheet from the papers stacked in a cassette (not illustrated), the picked-up paper sheet being guided thereby onto the cradle 6, and the guided paper sheet is then transferred by the transfer roller 5 through the cradle 6 to the platen 7.
  • the selecting arm 13 has to be manually adjusted again for the different paper thickness prior to next performing the above-described printing operation.
  • the conventional ink jet printer has several disadvantages in that printer users have been troubled because the conventional printer has to be adjusted manually according to the thickness of a paper sheet being selected, and additionally, the paper sheets used are confined to limited kinds thereof because the paper selecting arm has a narrow range of adjustment.
  • an object of the present invention to provide an ink jet printer head gap controlling apparatus capable of regulating the gap between a print head and a paper sheet so that a variety of paper sheets irrespective of the thicknesses thereof can be automatically processed.
  • an ink jet printer head gap controlling apparatus includes a pickup roller for picking up paper sheets one by one from a plurality of paper sheets stacked in a cassette, a transfer roller for transferring the picked-up paper sheet forwardly along a periphery thereof, a first supporting member for guiding and elastically supporting the transferred paper sheet, a supporting roller formed on one side portion of a cartridge carrier so as to move horizontally along with the first supporting means and supporting the first supporting member, a second supporting means elastically supporting another side portion of the cartridge carrier to maintain a certain distance between a rotation axle of the supporting roller and the first supporting member and regulating a gap between a print head and the printing paper sheet transferred onto a guiding pad, and an extracting roller for outwardly extracting therefrom the paper sheet after being printed on by ink jetted from a nozzle of the print head.
  • an ink jet printer head gap controlling apparatus in accordance with the present invention includes a cassette 20 provided upwardly extending at a rear portion of a carrier frame 30 for having a plurality of paper sheets stacked therein.
  • a pickup roller 40 is provided adjacent to a lower portion of the cassette 20 for picking up a paper sheet 22 one-by-one from paper sheets stacked in the cassette 20.
  • a transfer roller 50 is provided in a lower portion of the carrier frame 30 for transferring the paper sheet 22 picked up by the pickup roller 40 forwardly along the periphery thereof, and cooperates with a first supporting member 60, a second supporting member 90, and an extracting roller 100, which will be described hereunder.
  • the first supporting member 60 is mounted at one end thereof on a coordinate axle 64 so that a body 62 for guiding the paper sheet 22 can be minutely contacted to a paper sheet 22 which advances by the transfer roller 50, and includes a friction roller 66 carried at one end portion of the body 62 and rolled frictionally with the transfer roller 50.
  • a pressing member 68 is extended upwardly from the friction roller 66 for pressing the transferred paper sheet 22 to the transfer roller 50 by the rotation of the friction roller 66.
  • An elastic supporting member 69 is placed between another end portion of the body 62 and the carrier frame 30 so that the body 62 can be moved elastically as a paper sheet 22 is passed through between the transfer roller 50 and each of the friction roller 66 and the pressing member 68, and specifically the first supporting member 60 guides and elastically supports the paper sheet 22 as it is advanced by the transfer roller 50.
  • the ink jet printer in accordance with the present invention also includes a supporting roller 70 provided at one side portion of a carriage 80 to support the pressing member 68 of the first supporting member 60 and moving horizontally along the first supporting member 60, and a guiding plate 34 provided on an upper portion of a paper guide 36 and being parallel to a print head 82.
  • the carriage 80 mounts at a front portion thereof a print head 82 having a nozzle 84 for jetting ink onto a paper sheet 22 positioned opposite thereto.
  • the carriage 80 is carried movably at a lower portion thereof on a carriage shaft 86 by s bearing or like means, along which the carriage 80 may traverse, and about which the carriage 80 may pivot forwardly and backwardly so as to vary the space between the print head nozzle 84 and the paper sheet 22.
  • another embodiment of the second supporting member 90 in accordance with the present invention includes an elastic rotation axle 98 provided at a lower portion of the carrier frame 30, and a roller 92 fixed on the elastic rotation axle 98 and moving along a guiding shelf 32 of the carrier frame 30. Meanwhile, when a force is transmitted on each side of the elastic rotation axle 98, an elasticity-originated reaction force occurs at a lower portion of the roller 92.
  • the first supporting member 60 elastically supports another side portion of the carriage 80 so that a certain distance can be obtained between a rotation axle 72 of the supporting roller 70 and the first supporting member 60, and regulates the gap between the paper sheet 22 transferred onto the guiding plate 34 and the print head 82.
  • the extracting roller 100 for extracting outwardly the paper sheet printed on the guiding plate 34 is provided at a portion slightly over the transfer roller 50.
  • the transfer roller 50 forwardly transfers the paper sheet 22 along the periphery thereof.
  • the paper sheet 22 is guided by the body 62 of the first supporting member 60 into a space between the transfer roller 50 and the body 62 of the first supporting member 60.
  • the body 62 rotates on the coordinate axle 64 as much as the thickness of the advancing paper sheet 22.
  • the elastic supporting member 69 which is provided beneath one end portion of the first supporting member 60 generates a reaction force caused by elasticity.
  • the paper sheet 22 is pressingly passed through the interspace between the transfer roller 50 and the friction roller 66 which is rolled frictionally with the transfer roller 50.
  • the paper sheet 22 pressed to the pressing member 68 upwardly facing the friction roller 66 is guided onto the guiding plate 34.
  • the rotation force being generated when the supporting roller 70 moves upwardly on the carriage shaft 86 as much as the thickness of the paper sheet 22, presses each side of the plate spring 96 mounted at one side portion of the carriage 80, and a reaction force caused by elasticity occurs at a lower portion of the rotation axle 94, so that the supporting roller 70 supports the pressing member 68 of the first supporting member 60.
  • the nozzle 84 provided in the print head 82 enables to perform the printing while maintaining a prescribed gap between the print head 82 and the transferred paper sheet 22, by jetting ink onto the paper sheet 22 mounted on the guiding plate 34. Thereafter, the printing-completed paper sheet 22 is outwardly extracted from the guiding plate 34 by the extracting roller 100.
  • the ink jet printer head gap controlling apparatus in accordance with the present invention enables to provide an enhanced convenience in using printers by removing the disadvantage in which the print head positions have to be controlled manually according to each thickness of paper sheets. Therefore, under the present invention, a variety of paper sheets can be used for printing regardless of the thicknesses thereof.

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  • Common Mechanisms (AREA)
  • Ink Jet (AREA)
EP96401273A 1995-06-13 1996-06-12 Tintenstrahldrucker mit Druckspalteinstellung eines Druckkopfes Withdrawn EP0748697A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR9515542 1995-06-13
KR1019950015542A KR970000595A (ko) 1995-06-13 1995-06-13 잉크 제트 (ink jet) 프린터의 헤드 갭 (head gap) 조정장치

Publications (1)

Publication Number Publication Date
EP0748697A1 true EP0748697A1 (de) 1996-12-18

Family

ID=19416971

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96401273A Withdrawn EP0748697A1 (de) 1995-06-13 1996-06-12 Tintenstrahldrucker mit Druckspalteinstellung eines Druckkopfes

Country Status (2)

Country Link
EP (1) EP0748697A1 (de)
KR (1) KR970000595A (de)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0854049A2 (de) * 1997-01-13 1998-07-22 Canon Kabushiki Kaisha Bildaufzeichnungsgerät
CN1550879B (zh) * 1998-11-09 2012-05-02 西尔弗布鲁克研究有限公司 数字打印装置的盒和喷墨打印装置的盒
US8789939B2 (en) 1998-11-09 2014-07-29 Google Inc. Print media cartridge with ink supply manifold
US8823823B2 (en) 1997-07-15 2014-09-02 Google Inc. Portable imaging device with multi-core processor and orientation sensor
US8866923B2 (en) 1999-05-25 2014-10-21 Google Inc. Modular camera and printer
US8896724B2 (en) 1997-07-15 2014-11-25 Google Inc. Camera system to facilitate a cascade of imaging effects
US8902340B2 (en) 1997-07-12 2014-12-02 Google Inc. Multi-core image processor for portable device
US8902333B2 (en) 1997-07-15 2014-12-02 Google Inc. Image processing method using sensed eye position
US8908075B2 (en) 1997-07-15 2014-12-09 Google Inc. Image capture and processing integrated circuit for a camera
US8936196B2 (en) 1997-07-15 2015-01-20 Google Inc. Camera unit incorporating program script scanner
US9055221B2 (en) 1997-07-15 2015-06-09 Google Inc. Portable hand-held device for deblurring sensed images

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100381579B1 (ko) * 2001-08-07 2003-04-26 삼성전자주식회사 잉크젯 프린터의 헤드갭 유지장치

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4010834A (en) * 1975-03-06 1977-03-08 U.S. Philips Corporation Printing device comprising a distance member
JPH0263782A (ja) * 1988-08-30 1990-03-05 Juki Corp 印字ヘッド位置調整機構
EP0418815A2 (de) * 1989-09-18 1991-03-27 Canon Kabushiki Kaisha Tintenstrahlaufzeichnungsapparat
EP0435695A2 (de) * 1989-12-29 1991-07-03 Canon Kabushiki Kaisha Tintenstrahlaufzeichnungsgerät
EP0650846A2 (de) * 1993-10-29 1995-05-03 Hewlett-Packard Company Selbstanpassende Steuerung des Abstandes zwischen Druckkopf und Aufzeichnungsträger in Tintenstrahldruckern

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4010834A (en) * 1975-03-06 1977-03-08 U.S. Philips Corporation Printing device comprising a distance member
JPH0263782A (ja) * 1988-08-30 1990-03-05 Juki Corp 印字ヘッド位置調整機構
EP0418815A2 (de) * 1989-09-18 1991-03-27 Canon Kabushiki Kaisha Tintenstrahlaufzeichnungsapparat
EP0435695A2 (de) * 1989-12-29 1991-07-03 Canon Kabushiki Kaisha Tintenstrahlaufzeichnungsgerät
EP0650846A2 (de) * 1993-10-29 1995-05-03 Hewlett-Packard Company Selbstanpassende Steuerung des Abstandes zwischen Druckkopf und Aufzeichnungsträger in Tintenstrahldruckern

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 14, no. 237 (M - 976)<4180> 21 May 1990 (1990-05-21) *
REX, D.K.: "PRINTHEAD ADJUSTMENT", IBM TECHNICAL DISCLOSURE BULLETIN, vol. 26, no. 12, May 1984 (1984-05-01), NEW YORK US, pages 6373 - 6374, XP002012313 *

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EP0854049A3 (de) * 1997-01-13 1999-04-28 Canon Kabushiki Kaisha Bildaufzeichnungsgerät
US6129461A (en) * 1997-01-13 2000-10-10 Canon Kabushiki Kaisha Image recording apparatus having adjustment structure
EP0854049A2 (de) * 1997-01-13 1998-07-22 Canon Kabushiki Kaisha Bildaufzeichnungsgerät
US8902340B2 (en) 1997-07-12 2014-12-02 Google Inc. Multi-core image processor for portable device
US9544451B2 (en) 1997-07-12 2017-01-10 Google Inc. Multi-core image processor for portable device
US9338312B2 (en) 1997-07-12 2016-05-10 Google Inc. Portable handheld device with multi-core image processor
US8947592B2 (en) 1997-07-12 2015-02-03 Google Inc. Handheld imaging device with image processor provided with multiple parallel processing units
US8937727B2 (en) 1997-07-15 2015-01-20 Google Inc. Portable handheld device with multi-core image processor
US8953178B2 (en) 1997-07-15 2015-02-10 Google Inc. Camera system with color display and processor for reed-solomon decoding
US8896720B2 (en) 1997-07-15 2014-11-25 Google Inc. Hand held image capture device with multi-core processor for facial detection
US8896724B2 (en) 1997-07-15 2014-11-25 Google Inc. Camera system to facilitate a cascade of imaging effects
US8902324B2 (en) 1997-07-15 2014-12-02 Google Inc. Quad-core image processor for device with image display
US8866926B2 (en) 1997-07-15 2014-10-21 Google Inc. Multi-core processor for hand-held, image capture device
US8902333B2 (en) 1997-07-15 2014-12-02 Google Inc. Image processing method using sensed eye position
US8902357B2 (en) 1997-07-15 2014-12-02 Google Inc. Quad-core image processor
US8908075B2 (en) 1997-07-15 2014-12-09 Google Inc. Image capture and processing integrated circuit for a camera
US8908051B2 (en) 1997-07-15 2014-12-09 Google Inc. Handheld imaging device with system-on-chip microcontroller incorporating on shared wafer image processor and image sensor
US8908069B2 (en) 1997-07-15 2014-12-09 Google Inc. Handheld imaging device with quad-core image processor integrating image sensor interface
US8913151B2 (en) 1997-07-15 2014-12-16 Google Inc. Digital camera with quad core processor
US8913182B2 (en) 1997-07-15 2014-12-16 Google Inc. Portable hand-held device having networked quad core processor
US8913137B2 (en) 1997-07-15 2014-12-16 Google Inc. Handheld imaging device with multi-core image processor integrating image sensor interface
US8922791B2 (en) 1997-07-15 2014-12-30 Google Inc. Camera system with color display and processor for Reed-Solomon decoding
US8922670B2 (en) 1997-07-15 2014-12-30 Google Inc. Portable hand-held device having stereoscopic image camera
US8928897B2 (en) 1997-07-15 2015-01-06 Google Inc. Portable handheld device with multi-core image processor
US8934027B2 (en) 1997-07-15 2015-01-13 Google Inc. Portable device with image sensors and multi-core processor
US8934053B2 (en) 1997-07-15 2015-01-13 Google Inc. Hand-held quad core processing apparatus
US8936196B2 (en) 1997-07-15 2015-01-20 Google Inc. Camera unit incorporating program script scanner
US8836809B2 (en) 1997-07-15 2014-09-16 Google Inc. Quad-core image processor for facial detection
US8947679B2 (en) 1997-07-15 2015-02-03 Google Inc. Portable handheld device with multi-core microcoded image processor
US8823823B2 (en) 1997-07-15 2014-09-02 Google Inc. Portable imaging device with multi-core processor and orientation sensor
US8953060B2 (en) 1997-07-15 2015-02-10 Google Inc. Hand held image capture device with multi-core processor and wireless interface to input device
US8953061B2 (en) 1997-07-15 2015-02-10 Google Inc. Image capture device with linked multi-core processor and orientation sensor
US9584681B2 (en) 1997-07-15 2017-02-28 Google Inc. Handheld imaging device incorporating multi-core image processor
US9055221B2 (en) 1997-07-15 2015-06-09 Google Inc. Portable hand-held device for deblurring sensed images
US9060128B2 (en) 1997-07-15 2015-06-16 Google Inc. Portable hand-held device for manipulating images
US9124737B2 (en) 1997-07-15 2015-09-01 Google Inc. Portable device with image sensor and quad-core processor for multi-point focus image capture
US9124736B2 (en) 1997-07-15 2015-09-01 Google Inc. Portable hand-held device for displaying oriented images
US9131083B2 (en) 1997-07-15 2015-09-08 Google Inc. Portable imaging device with multi-core processor
US9137397B2 (en) 1997-07-15 2015-09-15 Google Inc. Image sensing and printing device
US9137398B2 (en) 1997-07-15 2015-09-15 Google Inc. Multi-core processor for portable device with dual image sensors
US9143635B2 (en) 1997-07-15 2015-09-22 Google Inc. Camera with linked parallel processor cores
US9143636B2 (en) 1997-07-15 2015-09-22 Google Inc. Portable device with dual image sensors and quad-core processor
US9148530B2 (en) 1997-07-15 2015-09-29 Google Inc. Handheld imaging device with multi-core image processor integrating common bus interface and dedicated image sensor interface
US9168761B2 (en) 1997-07-15 2015-10-27 Google Inc. Disposable digital camera with printing assembly
US9179020B2 (en) 1997-07-15 2015-11-03 Google Inc. Handheld imaging device with integrated chip incorporating on shared wafer image processor and central processor
US9185246B2 (en) 1997-07-15 2015-11-10 Google Inc. Camera system comprising color display and processor for decoding data blocks in printed coding pattern
US9185247B2 (en) 1997-07-15 2015-11-10 Google Inc. Central processor with multiple programmable processor units
US9191530B2 (en) 1997-07-15 2015-11-17 Google Inc. Portable hand-held device having quad core image processor
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US9197767B2 (en) 1997-07-15 2015-11-24 Google Inc. Digital camera having image processor and printer
US9219832B2 (en) 1997-07-15 2015-12-22 Google Inc. Portable handheld device with multi-core image processor
US9237244B2 (en) 1997-07-15 2016-01-12 Google Inc. Handheld digital camera device with orientation sensing and decoding capabilities
US9560221B2 (en) 1997-07-15 2017-01-31 Google Inc. Handheld imaging device with VLIW image processor
US9432529B2 (en) 1997-07-15 2016-08-30 Google Inc. Portable handheld device with multi-core microcoded image processor
CN1550879B (zh) * 1998-11-09 2012-05-02 西尔弗布鲁克研究有限公司 数字打印装置的盒和喷墨打印装置的盒
US8789939B2 (en) 1998-11-09 2014-07-29 Google Inc. Print media cartridge with ink supply manifold
US8866923B2 (en) 1999-05-25 2014-10-21 Google Inc. Modular camera and printer

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