EP1064154B1 - Dispositif d'impression thermique - Google Patents
Dispositif d'impression thermique Download PDFInfo
- Publication number
- EP1064154B1 EP1064154B1 EP99907705A EP99907705A EP1064154B1 EP 1064154 B1 EP1064154 B1 EP 1064154B1 EP 99907705 A EP99907705 A EP 99907705A EP 99907705 A EP99907705 A EP 99907705A EP 1064154 B1 EP1064154 B1 EP 1064154B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- support
- resistive
- resistive line
- close
- line
- 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
Links
- 238000007639 printing Methods 0.000 title description 11
- 239000004020 conductor Substances 0.000 claims description 22
- 239000010410 layer Substances 0.000 description 21
- 238000004519 manufacturing process Methods 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 6
- 239000000919 ceramic Substances 0.000 description 5
- 239000011521 glass Substances 0.000 description 3
- 238000007651 thermal printing Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009501 film coating Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
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
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/315—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material
- B41J2/32—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material using thermal heads
- B41J2/345—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material using thermal heads characterised by the arrangement of resistors or conductors
Definitions
- the present invention relates to a device thermal print head or thermal printer head.
- Such a device generally comprises a plate of ceramic which constitutes the basic support of all the functional and circuitry elements connecting a line of heating points (a resistive line) to integrated circuits for controlling these points in response to signals received from an external processor.
- the well-known principle of a print head thermal lies in controlling the opening and closure of an electrical circuit that includes a portion resistive line, which, when the circuit is energized, heats up by Joule effect and radiates towards a thermally sensitive support which is nearby (practically in contact with the line to a coating near) of this resistive line portion of so that the color of the support at the point of contact changes (for example from white to black).
- the resistive line is arranged astride consecutive conductive sections. Every other stretch is connected to a common conductor on one side of this line, each of the other sections extending on the other side of this line and including electronic means of sound opening or closing housed in an integrated circuit (called driver) assigned to the control of several drivers (for example sixty four).
- driver integrated circuit assigned to the control of several drivers (for example sixty four).
- the command of activating a heating point therefore consists in closing on a power source the common conductor and one of the other sections mentioned above. The current then flows in the portion of resistive line which is between two consecutive sections connected to the common conductor and which overlaps said conductor.
- the resistive line is located at vicinity of one of the longitudinal edges of the insert of ceramic. Between this edge and this line extends the common conductor.
- the head connections on the one hand to the power source and on the other hand to the driver control processor take place on the side of the longitudinal edge of the insert opposite to that close to the resistive line. It is therefore necessary to extend the common conductor up to this edge and in the current printheads this extension extends along a transverse edge of the wafer.
- the common conductor section and its extension directly depends on the maximum amount of current that has to run through them and this one is important (several amps) if all the heating points are enabled. With the thickness of this given common conductor, this section depends on its width and the part of the conductor common transverse to the plate can be of a width on the order of a centimeter.
- This drawing common to all printheads, especially those affected by ticket printing (including print width between 60 and 120 mm) requires a plate with a length greater than the printing width (of the order of 8 to 15%). It is understood that the transverse size of the printhead is by design more important than the length of the resistive line so that the width of the impression to be made, of a value which can become unacceptable in some applications.
- the trend current technology being at maximum miniaturization products and in particular treatment products information, there is a need to reduce this clutter so that the transverse dimension of the mechanism thermal printing is as close as possible to the width of the support (paper strip) to receive this print.
- Document JP.A 03 153363 reveals a common feed with several transverse branches to the plate to improve the distribution of the current Power. These branches create extra thicknesses which complicate the manufacture of the head.
- the present invention aims to respond to this need by providing a printhead whose resistive line is of length equal to dimension longitudinal of the ceramic plate which forms the head support.
- the means of the invention which allow to meet this objective, without complication of manufacturing and further lead to ability to consider modular head construction so that by juxtaposing modules in the sense of the resistive line you can easily get a printer range distinguished by their printing width.
- the invention therefore relates to a thermal printing device according to claim 1.
- This particular arrangement of the driver common allows not to reserve a particular portion support especially in the vicinity of one or both transverse ends for the passage of this conductor common. It follows from this that the resistive line can extend longitudinally from a transverse end to the other of the support thus authorizing a printing line as wide as the support which means you can build thermal print heads that take up space transverse is reduced to the maximum.
- the invention also relates to a head thermal printing which is characterized by the fact that it comprises at least two modules each made up by a device as described above, these devices being juxtaposed and connected in such a way that their lines resistive lines are aligned with each other.
- FIGs 1, 1A and 1B there is shown a rectangular ceramic plate 1 covered with a first layer of glass 2 and, over practically all of its surface, of a second conductive layer 3 for example in gold.
- This layer 3 covers almost the entire surface of the ceramic plate except in the case of reserves 4, 5 and 6, along a longitudinal edge 1b of the plate, in which the layer is left visible glass 2.
- Thin film coating techniques or thick used for manufacturing a device according to the invention are known in themselves and are not described in more detail below.
- the device of the Figure 1 is equipped with an insulating layer 7, the geometry is such that it leaves a margin of discovery 8 in the vicinity of the edge the longitudinal of the plate where conductive layer 3 remains visible.
- the insulating layer 7 covers the reserves 4, 5 and 6 previously provided in the conductive layer 3, but lets discover zones 9, 10, 11 and 12 of this layer 3 which constitute connection pads of the conductive layer to an electrical power source.
- the third step in manufacturing the device according to the invention consists in covering the insulating layer 7 and the margin 8 of two layers of gold, first fine then thick, which have the common reference 13 on the Figures 3, 3A and 3B. Tracks 9, 10, 11 and 12 remain discovered and isolated from the conductive layers 13 covering the insulating layer 7. The electrical continuity between layer 13 and conductive layer 3 is made at margin level 8.
- FIGS. 4, 4A and 4B we then proceed as shown schematically FIGS. 4, 4A and 4B during engraving, in a known manner, of layer 13 to make the different sections of conductors 14 electrically connected to the conductive layer 3 by margin 8 and sections of conductors 15 which lead to the reserved spaces 16 of the circuits integrated ensuring command and control of operation of the print head.
- a resistive line 17 is produced by an appropriate product deposit, this line 17 extending over the entire length of the plate 1 since the sections of conductors 14 and 15 could be engraved on the entire length.
- a layer of protective glass covers the entire surface.
- this protective layer not shown, the engravings of the conductors 18 in the vicinity of the edge 1b of the wafer and between the above ranges 9, 10, 11 and 12, these conductors 18 allowing the connection of circuits to the source power supply and to the various control units or processors to which the printing device should be logged.
- This structure also has the advantage of allow a juxtaposition of two or more supports such as those represented in FIGS. 4, 4A and 4B, associated by their transverse ends in order to constitute a longer resistive line. These supports can be simply kept side by side so that the resistive line of one is aligned with the resistive line on the other. A special machining of these transverse edges as well as a special order of heating points which are adjacent provides a printing continuity over the entire length of the strip resistive.
- the structure of the printing device according to the invention makes it possible to envisage the modular construction of thermal print heads from the same process manufacturing, thus being able to suit widths different printing using production tools streamlined much less expensive than production so far employed and who were necessarily dedicated to each width or type of print head.
Landscapes
- Electronic Switches (AREA)
Description
Claims (3)
- Dispositif d'impression thermique comprenant un support plan (1) de forme rectangulaire, équipé sur l'une de ses faces, parallèlement à l'un de ses bords longitudinaux (la) et au voisinage de celui-ci, d'une ligne résistive (17) chevauchant des tronçons (14, 15) de conducteurs disposés perpendiculairement à cette dernière et s'étendant alternativement d'un côté et de l'autre de la ligne résistive (17), l'une (14) des séries de tronçons étant issue d'un conducteur commun, le conducteur commun étant constitué par une couche conductrice recouvrant le support, la ligne résistive (17) et les tronçons de conducteurs (14, 15) qu'elle chevauche étant formés sur une couche isolante (7) recouvrant la couche conductrice (3), caractérisé en ce que la couche conductrice (3) recouvre la totalité du support plan (1) jusqu'au bord (1b) du support opposé à celui voisin de la ligne résistive (17), à l'exception de réserves adjacentes à ce bord définissant entre elles des plages (9, 10, 11, 12) de sa connexion à une source d'alimentation et en ce que la couche isolante (7) recouvre la totalité du support à l'exception d'une part d'une bande (8) adjacente au bord (la) voisin de la ligne résistive (17) et d'autre part des plages (9, 10, 11, 12) de connexion, les tronçons de conducteurs (14, 15) étant réalisés en totalité sur cette couche isolante (7).
- Dispositif selon la revendication 1, caractérisé en ce que la ligne résistive (17) est de longueur égale à la dimension longitudinale du support (1).
- Tête d'impression thermique, caractérisée en ce qu'elle comporte au moins deux modules constitués chacun par un dispositif selon la revendication 2, ces dispositifs étant juxtaposés et reliés de manière que leur ligne résistive (17) soit dans l'alignement l'une de l'autre.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9803366A FR2776230B1 (fr) | 1998-03-19 | 1998-03-19 | Dispositif d'impression thermique |
| FR9803366 | 1998-03-19 | ||
| PCT/FR1999/000569 WO1999047358A1 (fr) | 1998-03-19 | 1999-03-15 | Dispositif d'impression thermique |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1064154A1 EP1064154A1 (fr) | 2001-01-03 |
| EP1064154B1 true EP1064154B1 (fr) | 2002-10-02 |
Family
ID=9524223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99907705A Expired - Lifetime EP1064154B1 (fr) | 1998-03-19 | 1999-03-15 | Dispositif d'impression thermique |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US6473108B1 (fr) |
| EP (1) | EP1064154B1 (fr) |
| DE (1) | DE69903273T2 (fr) |
| FR (1) | FR2776230B1 (fr) |
| WO (1) | WO1999047358A1 (fr) |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS606480A (ja) * | 1983-06-23 | 1985-01-14 | Mitsubishi Electric Corp | エツジタイプのサ−マルヘツド |
| JPS62221550A (ja) * | 1986-03-25 | 1987-09-29 | Konishiroku Photo Ind Co Ltd | 印字ヘツド |
| DE3702849A1 (de) * | 1987-01-29 | 1988-08-11 | Siemens Ag | Thermodruckkopf |
| JPH03153363A (ja) * | 1989-11-10 | 1991-07-01 | Seiko Epson Corp | ライン型サーマルプリントヘッド |
| JP3228974B2 (ja) * | 1990-12-19 | 2001-11-12 | ローム株式会社 | ライン型サーマルプリントヘッド |
| JPH04338556A (ja) * | 1991-05-15 | 1992-11-25 | Rohm Co Ltd | サーマルプリントヘッド |
| US5353046A (en) | 1992-04-17 | 1994-10-04 | Rohm Co., Ltd. | Divisional-type thermal printhead |
| US5680170A (en) | 1994-05-31 | 1997-10-21 | Rohm Co. Ltd. | Thermal printhead |
| FR2730667A1 (fr) * | 1995-02-22 | 1996-08-23 | Axiohm | Dispositif d'impression thermique |
-
1998
- 1998-03-19 FR FR9803366A patent/FR2776230B1/fr not_active Expired - Fee Related
-
1999
- 1999-03-15 DE DE69903273T patent/DE69903273T2/de not_active Expired - Fee Related
- 1999-03-15 WO PCT/FR1999/000569 patent/WO1999047358A1/fr not_active Ceased
- 1999-03-15 EP EP99907705A patent/EP1064154B1/fr not_active Expired - Lifetime
- 1999-03-15 US US09/646,586 patent/US6473108B1/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| FR2776230B1 (fr) | 2000-06-30 |
| US6473108B1 (en) | 2002-10-29 |
| WO1999047358A1 (fr) | 1999-09-23 |
| FR2776230A1 (fr) | 1999-09-24 |
| EP1064154A1 (fr) | 2001-01-03 |
| DE69903273D1 (de) | 2002-11-07 |
| DE69903273T2 (de) | 2003-08-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2052289B1 (fr) | Electrode transparente | |
| FR2778475A1 (fr) | Carte a memoire du type sans contact, et procede de fabrication d'une telle carte | |
| EP0941520B1 (fr) | Carte a memoire du type sans contact | |
| EP0394089B1 (fr) | Vitrage automobile chauffable électriquement | |
| EP3201842A1 (fr) | Document électronique à extrémités d'antenne inclinées, support d'antenne pour un tel document électronique et procédé de fabrication d'un tel document | |
| WO2008113677A1 (fr) | Carte incorporant un affichage electronique | |
| WO1992015118A1 (fr) | Procede d'assemblage en continu de bandes a motifs et micromodule de circuit integre obtenu par ledit procede | |
| EP0522217A1 (fr) | Document fiduciaire ou de sécurité comportant un dispositif anti-contrefaçon, et procédé de fabrication d'un tel document | |
| EP0000070B1 (fr) | Barrette d'impression d'une image | |
| WO1984002037A1 (fr) | Fluxmetre thermique a thermocouples | |
| EP1518145B1 (fr) | Cellule d affichage, notamment a cristal liquide, ou cellule photovoltaique comprenant des moyens pour sa connexion a un circuit electronique de commande | |
| EP0013292B1 (fr) | Ecran guide-papier à guide-ruban incorporé, pour imprimante à impact | |
| EP1064154B1 (fr) | Dispositif d'impression thermique | |
| WO2003102713A2 (fr) | Objet portable intelligent sans contact ayant un corps transparent | |
| EP0000069B1 (fr) | Barrette d'impression d'une image | |
| FR2548450A1 (fr) | Procede de fabrication de diode en film mince ultra-miniature | |
| WO2013174734A2 (fr) | Module photovoltaïque avec cellules photovoltaïques a elargissement local du bus | |
| WO2005059818A1 (fr) | Fiabilisation des cartes dual interface par contacts internes à grille continue | |
| EP0969410B1 (fr) | Carte à microcircuit incluant une antenne | |
| EP0140747A1 (fr) | Perfectionnements aux sondes de mesure de niveau | |
| EP0218551A1 (fr) | Imprimante électrothermique | |
| EP0323937B1 (fr) | Structure de support pour capteur de gaz | |
| EP3611660A1 (fr) | Procédé de fabrication d'une matrice de pixels d'un capteur de motif thermique et capteur associé | |
| WO1997042656A1 (fr) | Circuit integre comportant des plots de connexion debouchant sur une face | |
| EP0239434A1 (fr) | Tête d'écriture thermique de type série pour imprimante |
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: 20000918 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE FR GB IT |
|
| 17Q | First examination report despatched |
Effective date: 20010329 |
|
| GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
| GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
| 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 IT |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 20021002 |
|
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
| REF | Corresponds to: |
Ref document number: 69903273 Country of ref document: DE Date of ref document: 20021107 |
|
| GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 20021108 |
|
| 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 |
Effective date: 20030703 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20050317 Year of fee payment: 7 Ref country code: FR Payment date: 20050317 Year of fee payment: 7 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20050429 Year of fee payment: 7 |
|
| 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: 20060315 |
|
| 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: 20061003 |
|
| GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20060315 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20061130 |
|
| 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: 20060331 |