EP0495411B1 - Dispositif de serrage du papier - Google Patents

Dispositif de serrage du papier Download PDF

Info

Publication number
EP0495411B1
EP0495411B1 EP19920100357 EP92100357A EP0495411B1 EP 0495411 B1 EP0495411 B1 EP 0495411B1 EP 19920100357 EP19920100357 EP 19920100357 EP 92100357 A EP92100357 A EP 92100357A EP 0495411 B1 EP0495411 B1 EP 0495411B1
Authority
EP
European Patent Office
Prior art keywords
paper
platen
holding bar
sheet
bracket
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.)
Expired - Lifetime
Application number
EP19920100357
Other languages
German (de)
English (en)
Other versions
EP0495411A3 (en
EP0495411A2 (fr
Inventor
Kwang-Ho Dongshin Apt. Ro
Moon-Bae Ingye Apt. Park
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.)
Samsung Electronics Co Ltd
Original Assignee
Samsung Electronics Co Ltd
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
Priority claimed from KR1019910000367A external-priority patent/KR920006786A/ko
Application filed by Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Publication of EP0495411A2 publication Critical patent/EP0495411A2/fr
Publication of EP0495411A3 publication Critical patent/EP0495411A3/en
Application granted granted Critical
Publication of EP0495411B1 publication Critical patent/EP0495411B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • 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
    • B41J13/22—Clamps or grippers
    • B41J13/223—Clamps or grippers on rotatable drums

Definitions

  • the present invention relates to an apparatus for holding a paper in a video printer, and more particularly to a paper clamping mechanism according to the preamble part of claim 1.
  • a video printer for printing a picture recorded by acquiring a video signal momentarily and the picture to be reproduced on a monitor through a recording device such as a still camera.
  • a method of heat conductive sublimation for sublimating each of three colors of yellow(Y), magenta(M) and cyan(C) successively, which enables a gradation of the color to be expressed freely, thus expressing all kinds of colors of the video signal.
  • the video printer comprises an ink ribbon 16 applied with a dye of three colors Y, M and C consecutively, a heat sensitive record paper 15, and a thermal printing head (T.P.H.) 10 which is pressed against a platen drum 1 selectively.
  • T.P.H. thermal printing head
  • the record paper 15 and the ink ribbon 16 advance at the speed of the platen drum 1.
  • Each of dyes Y, M and C is sublimated by the heat of the T.P.H. 10, and is absorbed on the record paper 15.
  • Various rates of the absorbed dyes Y, M and C make various synthesized colors with different gradation so that the printing of all kinds of colors is possible.
  • a holder for fixing the record paper on the platen drum wherein the holder 23 is installed around a shaft 13 of the platen drum 1 and set by a spring 6, and a clamp bracket 22 actuates a side end of the holder 23 so as to let the holder fix or release the record paper.
  • the holder 23 is pushed by the clamp bracket 22 rotating anti-clockwise and is lifted from the surface of the platen drum 1 so as to receive the record paper. By returning the clamp bracket 22, the holder 23 is released to its original position by a restoring force of the spring 6 so as to fix the record paper 15 by pressing.
  • the T.P.H. 10 is lifted at a predetermined position of the circumference of the platen drum 1 so as to provide an opening for passing the holder 23 when the platen drum 1 rotates.
  • the T.P.H. 10 generates heat during the pressing of the ribbon just after passing the holder through the opening, transcribing the dyes on the ribbon to the heat sensitive record paper.
  • the three colors of Y, M and C are printed. Thereafter, an arm end of the clamp bracket 22 pushes the holder 23 by rotating anti-clockwise, releasing a forefront tip of the printed record paper and discharging the printed record paper. At this time, the T.P.H. should press the record paper, because in case of the T.P.H. being detached from the record paper, the friction force is not supplied to the record paper and though the ribbon advances, the ribbon is damaged.
  • a printer comprising a bracket which is formed with a generally circular internal camtrack which cooperates with a twin-lobed cam fixed for rotation with a shaft in an axial position.
  • a printer having a platen and a clamper wherein the clamper may be lifted from the platen when a pin comes into direct contact with a movable hook.
  • the platen moves in an opposite direction as during paper feeding.
  • a printer having a swinging arm for engagement at its top or bottom part with a clamper pin.
  • the swinging arm In the charging state, the swinging arm is moved in one direction and in the discharge state, the swinging arm is moved in an opposite direction.
  • the object of the present invention is to provide a paper clamping mechanism which is simple in its structure and provides for a reduction of printing time in a color video printer.
  • two clamp brackets 2 which are connected to both side ends of a holding bar 3 respectively, are installed on the top and bottom surface of a platen drum 1 so as to rotate around a hinge 4 formed in each clamp bracket 2.
  • a protrusion or projecting pin 5 is projected from the outer surface of the clamp bracket 2 with being apart from the hinge 4.
  • One terminal of a spring 6 is mounted on an inside surface of the clamp bracket 2, and the other terminal thereof is mounted on the bottom or top surface of the platen drum 1, so as to pull the holding bar 3 toward the platen drum 1 by its resilient force.
  • Another protrusion or projecting pin 7 is formed near the spring 6 with opposing to the protrusion pin 5.
  • a flange 9 of a solenoid 8 is contactable with the protrusion pins 5 and 7.
  • T.P.H. 10 is positioned over the platen drum 1 and is connected to a roller 12 through a leaf spring 11 at the forefront of the T.P.H. 10.
  • Middle portion of the clamp bracket is curved toward the holding bar to form a slide groove 14 between the curve of said middle portion and a shaft 13 of the platen drum 1.
  • the record paper is transmitted through a guide passage and which is detected by a sensor (not shown).
  • the flange 9 of the solenoid 8 pushes the protrusion pin 5 of the clamp bracket 2. So, the clamp bracket 2 is rotated anti-clockwise around the hinge 4 while the slide groove 14 moves around the shaft 13. Further, the holding bar 3 moves toward from the surface of the platen drum 1 to be apart from the circumference of the platen drum 1 as shown in Fig.5B.
  • the clamp bracket 2 is rotated at the hinge 4 clockwise, returning to its original position by a resilient force of the spring 6, as soon as an electric source of the solenoid 8 is cut. Accordingly the forefront tip of the record paper 15 is fixed between the holding bar 3 and the platen drum 1. Accordingly the record paper 15 moves along the surface of the platen drum 1 according as the platen drum 1 rotates in order to print a given color.
  • the T.P.H. 10 is lifted so as to pass the holding bar 3.
  • the platen drum 1 rotates further until the holding bar 3 arrives at a point B.
  • the roller 12 of the T.P.H. 10 presses the ribbon 16 on the record paper 15 to provide a friction force to the record paper 15.
  • the printing operation is performed by heat generated from the T.P.H. 10.
  • the above printing operation is as same as that of the conventional video printer. That is, during the holding bar 3 continues to rotate further from the point B, the T.P.H. 10 generates heat and sublimates a dye of Y color, printing the Y color on the record paper 15 as shown in Fig.5F.
  • the holding bar 3 When the holding bar 3 arrives at the point B after printing the color Y and M in the above operation, it rotates by the angle of 15° more after two and half revolutions, which is detected by the sensor. At this time, the platen drum stops rotating. Then the flange 9 of the solenoid 8 pushes the protrusion pin 7 of the clamp bracket 2 anti-clockwise so as to move the holding bar 3 from the point B to the direction of an arrow, the holder being apart from surface of the platen drum 1 as shown in Fig.5G, and the record paper 15 being lifted by its resilient force.
  • the holding bar 3 presses on the circumferential surface of the platen drum 1 by a restoring force of the spring 6, however the record paper being lifted above the holding bar at this time. Thereafter the platen drum 1 continues to rotate for printing the color C.
  • the record paper in which only Y and M colors are printed is fixed on the platen drum safely by a friction force of the roller 12.
  • the discharging roller 17 transmits the print-completed paper to a discharging tray right after printing completion.
  • the paper holder increases the printing speed by preventing the platen drum from rotating unnecessarily and prevents the waste of the ribbon by discharging the printed paper right after the completion of printing all colors.

Landscapes

  • Handling Of Cut Paper (AREA)

Claims (3)

  1. Mécanisme de serrage de papier pour serrer une feuille de papier d'impression sur une plaque en forme de tambour d'une imprimante, comprenant:
    deux supports de serrage (2) connectés entre eux via une barre de maintien (3), pour serrer ladite feuille de papier (15) sur la surface circonférentielle de ladite plaque (1), de manière que chaque support de serrage soit installé sur la surface supérieure ou inférieure de ladite plaque (1) et soit monté tournant autour d'une articulation (4) formée dans ledit support de serrage (2);
    des moyens d'entraînement (8, 9) pour actionner lesdits supports de serrage (2), de manière que ladite barre de maintien (3) soit déplaçable dans une position dans laquelle elle est espacée de la circonférence de ladite plaque (1);
    un rouleau (12) monté sur une tête d'impression (10) thermique, disposé à proximité de ladite circonférence de ladite plaque (1), pour presser un ruban (16) sur ladite feuille de papier (15); et
    un moyen élastique (6) pour pousser ladite barre de maintien (3) vers ladite plaque (1), de manière que ladite feuille de papier (15) soit serrée sur la plaque (1),
    caractérisé en ce que
    chacun desdits supports de serrage (2) présente une gorge incurvée (14), en une position centrale du support, et l'articulation (4) est disposée à l'extérieur d'une partie centrale, pour permettre un coulissement excentrique du support et en ce que
    au moins un support (2) présente un couple de tiges saillantes (5, 7) qui peuvent être actionnées par les moyens d'entraînement (8, 9), de manière que ladite première tige saillante (5) déplace ladite barre de maintien vers le haut, lors d'un actionnement pour l'insertion de la feuille de papier (15), et que ladite seconde tige saillante (7) déplace ladite barre de maintien (3) vers le haut, lors d'un actionnement pour la libération de la feuille de papier (15) serrée.
  2. Mécanisme selon la revendication 1, dans lequel ledit moyen d'entraînement comprend un solénoïde (8).
  3. Mécanisme selon la revendication 1 ou 2, caractérisé par le fait de comprendre en outre une tige élastique (11) pour connecter ledit rouleau (12) à ladite tête d'impression thermique.
EP19920100357 1991-01-12 1992-01-10 Dispositif de serrage du papier Expired - Lifetime EP0495411B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1019910000367A KR920006786A (ko) 1990-09-21 1991-01-12 액정표시 장치
KR36791 1991-01-12

Publications (3)

Publication Number Publication Date
EP0495411A2 EP0495411A2 (fr) 1992-07-22
EP0495411A3 EP0495411A3 (en) 1993-03-24
EP0495411B1 true EP0495411B1 (fr) 1996-09-11

Family

ID=19309670

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19920100357 Expired - Lifetime EP0495411B1 (fr) 1991-01-12 1992-01-10 Dispositif de serrage du papier

Country Status (2)

Country Link
EP (1) EP0495411B1 (fr)
DE (1) DE69213484T2 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR950011933B1 (ko) * 1991-10-16 1995-10-12 삼성전자주식회사 비디오 프린터 홀더장치
DE69222034T2 (de) * 1992-06-04 1998-01-08 Samsung Electronics Co Ltd Papierhalter für einen Videodrucker

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4900008A (en) * 1986-12-22 1990-02-13 Polaroid Corporation Sheet clamping arrangement for rotatable drums
JPH01278381A (ja) * 1988-05-02 1989-11-08 Mitsubishi Electric Corp プリンタの記録紙クランプ装置
DE69032565T2 (de) * 1989-05-08 1999-01-28 Mitsubishi Electric Corp Drucker

Also Published As

Publication number Publication date
EP0495411A3 (en) 1993-03-24
DE69213484T2 (de) 1997-02-06
EP0495411A2 (fr) 1992-07-22
DE69213484D1 (de) 1996-10-17

Similar Documents

Publication Publication Date Title
NL8300663A (nl) Drukinrichting van het type met thermische overdrachten.
US4891655A (en) Thermal color printer
US4815870A (en) Receiver clamping arrangement for thermal printers
KR960010417B1 (ko) 감열전사 기록방법 및 장치와 그를 위한 잉크지카세트
EP0495411B1 (fr) Dispositif de serrage du papier
EP0340925B1 (fr) Dispositif pour supporter le papier d'une imprimante
KR0135851B1 (ko) 프린팅 방법 및 그 장치
KR0144971B1 (ko) 프린팅 장치
US5196869A (en) Recording paper clamping apparatus for a video printer
US5325777A (en) Image forming apparatus and method
JPH0326662B2 (fr)
JP2530605Y2 (ja) 熱転写記録装置
KR950011933B1 (ko) 비디오 프린터 홀더장치
KR0132865B1 (ko) 프린팅장치
KR0132869B1 (ko) 열전사 프린터
KR0141227B1 (ko) 프린팅 방법 및 그 장치
EP0572700B1 (fr) Support papier pour une imprimante vidéo
JPH0462272B2 (fr)
KR940007481B1 (ko) 비디오 프린터의 기록지 홀더장치
KR970000086B1 (ko) 칼라 비디오 프린터의 프린터방법
JP2566942Y2 (ja) プリンタ装置
KR0132849B1 (ko) 프린터 기록지 클램핑장치
JP3532998B2 (ja) サーマルプリンタ
KR0155706B1 (ko) 열전사 기록장치
JP2526046Y2 (ja) 熱転写型プリンタ装置

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19920110

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE FR GB

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE FR GB

17Q First examination report despatched

Effective date: 19950222

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB

REF Corresponds to:

Ref document number: 69213484

Country of ref document: DE

Date of ref document: 19961017

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20020110

Year of fee payment: 11

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030930

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20080109

Year of fee payment: 17

Ref country code: DE

Payment date: 20080104

Year of fee payment: 17

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20090110

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090801

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090110