EP0195863A1 - Imprimante à jet d'encre thermique - Google Patents
Imprimante à jet d'encre thermique Download PDFInfo
- Publication number
- EP0195863A1 EP0195863A1 EP85302146A EP85302146A EP0195863A1 EP 0195863 A1 EP0195863 A1 EP 0195863A1 EP 85302146 A EP85302146 A EP 85302146A EP 85302146 A EP85302146 A EP 85302146A EP 0195863 A1 EP0195863 A1 EP 0195863A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- thermal head
- ink
- printer
- hole
- recording medium
- 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.)
- Granted
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
- 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
- B41J2/14—Structure thereof only for on-demand ink jet heads
- B41J2/14016—Structure of bubble jet print heads
- B41J2/14161—Structure having belt or drum with holes filled with ink
Definitions
- the present invention relates to a thermal ink jet printer.
- Non-impact printers include electronic photographic systems, electro static systems, thermal systems and ink jet systems.
- Ink jet systems are very silent, have low power consumption and are small and compact.
- ink jet systems have not become widely used. The main reason is due to plugging or stopping of the ink jet nozzle. Much research and development effort has been put into inks and nozzle shapes but trouble free operation of ink jet systems has not been achieved.
- the present invention aims to eliminate the above noted difficulty and insufficiency, and to provide a new ink jet printing machine using a thermal head member.
- a thermal ink jet printer characterised by an apertured member having at least one hole or recess therein; means for introducing ink into the or each hole or recess; at least one thermal head element disposed in contact with one surface of said apertured member, the or each said thermal head element being aligned or alignable with at least one said hole or recess; means for mounting paper or other recording medium adjacent to the opposite surface of the apertured member; and means for energising the or a thermal head element when so aligned so as to cause the ink to be ejected from the respective said at least one hole or recess and onto the recording medium as a result of bubble pressure caused by heat from said thermal head element.
- the apertured member is an endless belt having a plurality of holes or recesses therein, the endless belt being arranged to receive ink from an ink tank.
- the endless belt may be constituted by a film having holes or recesses therein each of which has a diameter of 10 to 200pm.
- the or each thermal head element may be arranged, when so energised, to cause ink ejection from one hole or recess only or, alternatively, from a plurality of holes or recesses simultaneously.
- thermal head elements which are arranged transversely of the recording medium, the energising means being arranged to energise selected thermal head elements.
- each endless belt may have a portion disposed adjacent the recording medium, the said portions being arranged successively in a length direction or direction of travel of the recording medium, each said portion being provided with respective thermal head elements.
- the or each endless belt may be mounted on rollers one of which is disposed within the respective ink tank.
- each endless belt has a portion disposed adjacent the recording medium, the said portions being arranged successively in the breadth direction of the recording medium, each said portion being provided with a respective thermal head element.
- each endless belt may be entrained around a respective sponge roller, which extends into a respective ink tank.
- both line and serial printing may be achieved.
- Use may if desired be made of a reciprocating sheet passing in front of a thermal head.
- numeral 1 indicates a film of thin metal or heat resistant organic material such as polyimide
- numeral 2 indicates a plurality of hole or recess portions which may be shaped in or on said film 1, the diameter of each said hole or recess portion 2 typically being about 10 to 200 ⁇ m. The diameter of the holes 2 is determined according to the thickness of the film 1 or the manner in which it is used.
- Figures 2(a), 2(b), and 2(c) illustrate a basic principle of the present invention.
- Recording ink 3 fills a plurality of hole or recess portions 2.
- the hole or recess portions 2 are moved across the surface of a thermal head member 5 which has a plurality of thermal head elements 4.
- the thermal head element 4 which is aligned with a hole or recess portion 2 is quickly heated by an applied electric current, whereby a bubble 6 is formed between the recording ink 3 in the respective hole or recess portion 2 and the thermal head element 4 of the thermal head member 5.
- part or all of the recording ink in the said respective hole or recess portion 2 is spouted from the hole 2 by pressure from the bubble 6.
- Each thermal head element 4 may be formed on the thermal head member 5.
- the film 1 is completely in contact with the thermal head element 4, causing the bubble 6 to be enlarged toward the opened hole direction of said hole or recess portion 2, whereby the direction of ink ejection is precisely controlled.
- one thermal head element 4 corresponds to one hole or recess portion 2 of the film 1 respectively.
- Figures 4(a) and 4(b) show another embodiment of the present invention, in which one thermal head element 4 energizes a plurality of hole or recess portions 2.
- the construction of Figures 4(a) and 4(b) has a higher reliability than the construction of Figures 1 to 3 from the standpoint of supplying an ink jet to a nozzle, whereby a mechanical construction for aligning a hole or recess portion 2 and the thermal head element 4 is not necessary and the construction is greatly simplified.
- Several of the hole or recess portions 2 are definitely located on the thermal head element 4 at a given time and skips in recording are completely eliminated.
- Figure 5 shows a monochrome type line printer.
- the film 1 is an endless belt whose width is the full width of a page, for example A4 or A3 width.
- a plurality of hole or recess portions 2 are shaped in or on the film 1.
- the diameter of the hole or recess portions 2 depends on said film thickness. For example, the maximum diameter might be 50pm in the case of a film thickness of 50pm.
- Numeral 8 indicates a recording ink
- numeral 7 indicates an ink tank.
- the film 1 is rotatably supported by a pair of rollers 9 and 15. Recording ink 8 is transferred into the hole or recess portions 2 when the film 1 passes through the ink tank 8 and is moved past the thermal head element 4 by rotation of the rollers 9 and 15.
- a bubble (corresponding to the bubble 6 of Figure 2(b) and 2(c)) may be caused between said thermal head element 4 and recording ink 8 by quickly heating the thermal head element 4 by electric voltage application thereto by means not shown, the thermal head element 4 being disposed in contact with one surface la of the film 1.
- the recording ink 8 is therefore spouted or ejected from the holes 2 onto a recording paper 11 by the bubble pressure, whereby a character or image may be recorded on the paper 11, the latter being disposed adjacent to the opposite surface lb of the film 1.
- the thermal head member 5 of Figure 5 has a plurality of thermal head elements 4 extending in the breadth direction of the thermal head member 5 (i.e. transversely of the paper 11) and has a driving circuit (not shown) which drives or energises selected thermal head elements 4, whereby the driving circuit construction is simplified.
- the recording paper 11 may be located on a platen 13 adjacent the hole or recess portions 2.
- the recording paper 11 is supported by a pair of rollers 12 and 14 which are attached to the platen 13.
- Numeral 10 indicates a blade to scrape off excess ink which adheres to the film 1 after passing through an ink tank 8.
- Printing on the recording paper 11 is performed by selectively applying an electric voltage to the thermal head elements 4 from the driving circuit which may, for example, be constructed using an integrated circuit (not shown).
- Figure 6 shows a construction for colour line printing function, a basic construction composed of a plurality of mechanisms for each colour source which may be basically similar to the monochrome mechanism of Figure 5.
- a film 1y and a recording ink 8y are used for Yellow, a film lm and a recording ink 8m are used for Magenta, a film lc and a recording ink 8c for Cyan and a film lblk and recording ink 8blk for Black.
- the thermal head member 5 has a plurality of thermal head elements 4 (not shown in Figure 6) located behind each of the films 1y, lm, lc and lblk.
- the recording inks 8y, 8m, 8c and 8blk are selectively spouted or ejected from the films ly, 1m, lc and lblk onto the recording paper 11 by driving the thermal head elements 4 according to a timing signal from a driving circuit (not shown) while feeding the recording paper 11 in a coordinated manner. That is to say, the films ly, lm, lc, lblk have portions ld, Ie, lf, 1g respectively which are arranged successively in a length direction or direction of travel of the paper 11, each portion ld, Ie, lf, 1g being provided with respective thermal head elements 4 (not shown in Figure 6).
- Figure 7 shows a construction of a colour serial printing machine having films ly, lm, lc and lblk for Yellow, Magenta, Cyan and Black respectively; the films have a plurality of hole or recess portions 2 respectively.
- the films ly, 1m, lc, lblk respectively have portions lh, 11, lk, In disposed adjacent the paper 11 and arranged successively in the breadth direction of the latter.
- the thermal head members 4y, 4m, 4c and 4blk for Yellow, Magenta, Cyan and Black have their thermal head elements aligned across the width of the films 1y, lm, lc and lblk respectively.
- Ink supply sponge rollers 16y, 16m, 16c and l6blk supply the recording ink from the ink tanks 7y, 7m, 7c and 7blk to the films ly, lm, lc and lblk.
- Sponge rollers 16y, 16m, 16c and 16blk suck up the recording ink from said ink tanks 7y, 7m, 7c and 7blk and fill the recording ink in the hole or recess portions 2 which contact and pass the surfaces of the sponge rollers 16y, 16m, 16c and 16blk.
- the films 1y to lblk, the thermal head members 4y to 4blk, the sponge rollers 16y to l6blk and the ink tanks 7y to 7blk are compactly housed as a unitary colour reproducing head body, whereby it is possible to obtain a colour serial print system by reciprocating the colour recording head body across the width of the recording paper 11.
- Figure 8 shows a cross-sectional view of typical hole or recess portions 2 of the film 1.
- a and c are tapered portions
- b is a parallel portion
- d is a recess portion.
- the density of said hole or recess portions 2 in the film 1 is determined by both the recording density and thermal head element density.
- the bubble pressure employed to spout the recording ink from the hole or recess portions to the recording paper is much higher than a conventional piezo electric element type ink jet nozzle.
- the film employed is endless; however, the present invention is not limited in this construction. For example, it is possible to use another type of reciprocating film.
- ink tank and film as a cassette type unit, which may be readily replaced as required.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE8585302146T DE3573753D1 (en) | 1985-03-27 | 1985-03-27 | Thermal ink jet printer |
EP19850302146 EP0195863B1 (fr) | 1985-03-27 | 1985-03-27 | Imprimante à jet d'encre thermique |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP19850302146 EP0195863B1 (fr) | 1985-03-27 | 1985-03-27 | Imprimante à jet d'encre thermique |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0195863A1 true EP0195863A1 (fr) | 1986-10-01 |
EP0195863B1 EP0195863B1 (fr) | 1989-10-18 |
Family
ID=8194181
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19850302146 Expired EP0195863B1 (fr) | 1985-03-27 | 1985-03-27 | Imprimante à jet d'encre thermique |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0195863B1 (fr) |
DE (1) | DE3573753D1 (fr) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0201177A2 (fr) * | 1985-03-28 | 1986-11-12 | Kabushiki Kaisha Toshiba | Appareil d'enregistrement à jet d'encre |
GB2206082A (en) * | 1987-06-17 | 1988-12-29 | Alcatel Business Systems | Franking machine incorporating ink-jet printer and microprocessor for accounting and control |
US4797693A (en) * | 1987-06-02 | 1989-01-10 | Xerox Corporation | Polychromatic acoustic ink printing |
US4801953A (en) * | 1987-06-02 | 1989-01-31 | Xerox Corporation | Perforated ink transports for acoustic ink printing |
US4801951A (en) * | 1986-04-17 | 1989-01-31 | Kabushiki Kaisha Toshiaba | Thermal ink-jet type image forming apparatus |
US5801742A (en) * | 1994-02-23 | 1998-09-01 | Oce Printing Systems Gmbh | Thermal transfer printing device for transferring a printing image onto a recording medium |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9004631B1 (en) | 2013-10-31 | 2015-04-14 | Xerox Corporation | Method and apparatus for accumulating excess ink in a stationary receptacle in imaging devices that form images on intermediate imaging surfaces |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3640214A (en) * | 1968-06-21 | 1972-02-08 | Precisa Ag | Selective printer employing inking spark discharge |
US3834301A (en) * | 1971-11-17 | 1974-09-10 | Battelle Memorial Institute | Process and device for non-impact printing with liquid ink |
FR2368362A1 (fr) * | 1976-10-21 | 1978-05-19 | Ibm | Dispositif d'ecriture, d'affichage et d'impression d'informations utilisant un faisceau laser |
EP0014918A1 (fr) * | 1979-02-16 | 1980-09-03 | SMH-ALCATEL Société anonyme dite: | Dispositif destiné à déposer sur un support des gouttes d'encre |
GB2142583A (en) * | 1983-06-23 | 1985-01-23 | Nippon Telegraph & Telephone | Thermal ink transfer printer |
-
1985
- 1985-03-27 DE DE8585302146T patent/DE3573753D1/de not_active Expired
- 1985-03-27 EP EP19850302146 patent/EP0195863B1/fr not_active Expired
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3640214A (en) * | 1968-06-21 | 1972-02-08 | Precisa Ag | Selective printer employing inking spark discharge |
US3834301A (en) * | 1971-11-17 | 1974-09-10 | Battelle Memorial Institute | Process and device for non-impact printing with liquid ink |
FR2368362A1 (fr) * | 1976-10-21 | 1978-05-19 | Ibm | Dispositif d'ecriture, d'affichage et d'impression d'informations utilisant un faisceau laser |
EP0014918A1 (fr) * | 1979-02-16 | 1980-09-03 | SMH-ALCATEL Société anonyme dite: | Dispositif destiné à déposer sur un support des gouttes d'encre |
GB2142583A (en) * | 1983-06-23 | 1985-01-23 | Nippon Telegraph & Telephone | Thermal ink transfer printer |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0201177A2 (fr) * | 1985-03-28 | 1986-11-12 | Kabushiki Kaisha Toshiba | Appareil d'enregistrement à jet d'encre |
EP0201177A3 (en) * | 1985-03-28 | 1989-03-01 | Kabushiki Kaisha Toshiba | Ink jet recording apparatus |
US4801951A (en) * | 1986-04-17 | 1989-01-31 | Kabushiki Kaisha Toshiaba | Thermal ink-jet type image forming apparatus |
US4797693A (en) * | 1987-06-02 | 1989-01-10 | Xerox Corporation | Polychromatic acoustic ink printing |
US4801953A (en) * | 1987-06-02 | 1989-01-31 | Xerox Corporation | Perforated ink transports for acoustic ink printing |
GB2206082A (en) * | 1987-06-17 | 1988-12-29 | Alcatel Business Systems | Franking machine incorporating ink-jet printer and microprocessor for accounting and control |
GB2206082B (en) * | 1987-06-17 | 1991-05-15 | Alcatel Business Systems | Franking machine |
US5801742A (en) * | 1994-02-23 | 1998-09-01 | Oce Printing Systems Gmbh | Thermal transfer printing device for transferring a printing image onto a recording medium |
Also Published As
Publication number | Publication date |
---|---|
EP0195863B1 (fr) | 1989-10-18 |
DE3573753D1 (en) | 1989-11-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA1220079A (fr) | Imprimante thermique au jet d'encre | |
US6511172B2 (en) | Printing apparatus | |
US6132035A (en) | Printing head having resiliently supported vibration plate | |
US6003973A (en) | Ink jet head, apparatus and method having individually-drivable heat generating resistors variably spaced from an electric outlet | |
EP1000755B1 (fr) | Appareil d'enregistrement du type à navette | |
JP2002301829A (ja) | インクジェット記録装置 | |
JPH02204053A (ja) | インクの切換えが可能なインクジェット印字装置 | |
US4630075A (en) | Cassette-type printing head | |
EP0195863A1 (fr) | Imprimante à jet d'encre thermique | |
JP2873879B2 (ja) | インクジェット記録装置 | |
JP2001310469A (ja) | インクジェットプリント装置 | |
KR960003967A (ko) | 인쇄 장치 | |
JPH04212864A (ja) | インクジェット記録装置 | |
EP1145854B1 (fr) | Substrat de tête d'impression avec générateurs de gouttes d'encre arrangés en groupes comprenant les deux arêtes latérales d'un canal d'alimentation d'encre | |
EP0201177B1 (fr) | Appareil d'enregistrement à jet d'encre | |
US4557616A (en) | Resistive ribbon thermal transfer printing system and process | |
JPH0939256A (ja) | インクジェットプリンタ | |
JPH11151822A (ja) | 記録装置 | |
JPH04329151A (ja) | 記録装置 | |
JPH054335A (ja) | 記録装置 | |
JPH04347678A (ja) | 記録装置 | |
EP0202370B1 (fr) | Tête d'impression | |
JPH04366639A (ja) | インクジェットプリンタの印字機構 | |
JP2001261216A (ja) | 画像作成及び切り抜き装置 | |
JPH0664268A (ja) | インクジェットプリンタ |
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 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE FR GB IT NL |
|
17P | Request for examination filed |
Effective date: 19870316 |
|
17Q | First examination report despatched |
Effective date: 19880627 |
|
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 NL |
|
ITF | It: translation for a ep patent filed |
Owner name: JACOBACCI & PERANI S.P.A. |
|
REF | Corresponds to: |
Ref document number: 3573753 Country of ref document: DE Date of ref document: 19891123 |
|
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 | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 19930212 Year of fee payment: 9 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 19930311 Year of fee payment: 9 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 19930318 Year of fee payment: 9 |
|
ITTA | It: last paid annual fee | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 19930331 Year of fee payment: 9 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Effective date: 19940327 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Effective date: 19941001 |
|
NLV4 | Nl: lapsed or anulled due to non-payment of the annual fee | ||
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 19940327 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Effective date: 19941130 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Effective date: 19941201 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |