EP0603017A1 - Druckverfahren durch Wärmeübertragung - Google Patents
Druckverfahren durch Wärmeübertragung Download PDFInfo
- Publication number
- EP0603017A1 EP0603017A1 EP93402552A EP93402552A EP0603017A1 EP 0603017 A1 EP0603017 A1 EP 0603017A1 EP 93402552 A EP93402552 A EP 93402552A EP 93402552 A EP93402552 A EP 93402552A EP 0603017 A1 EP0603017 A1 EP 0603017A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- heating
- printing
- cycle
- lines
- points
- 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
- B41J2/315—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
- B41J2/35—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 providing current or voltage to the thermal head
- B41J2/355—Control circuits for heating-element selection
- B41J2/36—Print density control
- B41J2/365—Print density control by compensation for variation in temperature
Definitions
- the invention relates to a thermal transfer printing process.
- the invention applies to thermal printing on any support and in particular on plastic supports such as electronic cards.
- thermal transfer printing machines use a printing head which includes a line of heating points obtained by electrical resistances. The heating of the points is caused by the passage of an electric current through the resistors.
- the heating dots are applied on a thermosensitive support or an ink ribbon, several lines of parallel dots are successively printed and allow to give the final pattern of the printing.
- An electronic device comprising a current pulse generator and a generator control program is capable of supplying current pulses of required level and according to a programmed heating cycle.
- the present invention makes it possible to solve this problem without having the drawbacks of the solutions known to date. It relates to a thermal transfer printing process from a print head comprising a line of heating points, the heating of the points being done by application of heating pulses, mainly characterized in that it consists applying the heating pulses according to a determined heating cycle during the first N printing lines and reversing the cycle regularly. The cycle is preferably reversed every N lines.
- FIGS 1A, 1B, 2A, 2B and 3 relate to the state of the art and have already been described.
- the method according to the invention consists in applying current pulses according to a heating cycle on a predetermined number of lines, then in reversing this cycle on a determined number of lines as shown in the example given in FIG. 4.
- a heating cycle as given in this first example is applied to each printing line and this on a predetermined number N of lines.
- the number N is determined experimentally for each printhead, the number chosen being that which gives the best printing results.
- the heating cycle is regularly reversed.
- the cycle is reversed for the next N lines or for a number of lines substantially equal to N.
- the cycle starts again at line N + 1 and according to the example taken, it begins with a cooling time followed by a heating pulse and so on.
- the heating pulses recommended by the manufacturer are used according to the invention, but applied in the manner just indicated.
- the technical solution proposed makes it possible to maintain a constant and rapid printing speed without overheating the heating points for a very low price.
- the print quality is thereby improved without having to use expensive heads or sophisticated electronics as in the prior art.
- the method is implemented by the electronic control device of the head.
- the control program of the existing pulse generator has been modified, this modification being within the reach of those skilled in the art so as to reverse the heating cycle planned, every N lines.
Landscapes
- Electronic Switches (AREA)
- Thermal Transfer Or Thermal Recording In General (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9212490A FR2696978B1 (fr) | 1992-10-19 | 1992-10-19 | Procédé d'impression par transfert thermique. |
FR9212490 | 1992-10-19 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0603017A1 true EP0603017A1 (de) | 1994-06-22 |
EP0603017B1 EP0603017B1 (de) | 1996-07-17 |
Family
ID=9434670
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19930402552 Expired - Lifetime EP0603017B1 (de) | 1992-10-19 | 1993-10-15 | Druckverfahren durch Wärmeübertragung |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0603017B1 (de) |
JP (1) | JPH06210889A (de) |
DE (1) | DE69303697T2 (de) |
ES (1) | ES2090918T3 (de) |
FR (1) | FR2696978B1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5910709A (en) * | 1995-12-26 | 1999-06-08 | General Electric Company | Florescent lamp ballast control for zero -voltage switching operation over wide input voltage range and over voltage protection |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008068464A (ja) * | 2006-09-13 | 2008-03-27 | Mitsubishi Electric Corp | サーマルヘッドの制御方法 |
MY156926A (en) | 2008-12-25 | 2016-04-15 | Brother Ind Ltd | Tape cassette |
ES2554777T3 (es) | 2008-12-25 | 2015-12-23 | Brother Kogyo Kabushiki Kaisha | Cartucho de cinta e impresora de cinta |
WO2010113440A1 (en) | 2009-03-31 | 2010-10-07 | Brother Kogyo Kabushiki Kaisha | Tape cassette and tape printer |
CN101850662B (zh) | 2009-03-31 | 2015-02-11 | 兄弟工业株式会社 | 带式打印装置 |
JP5136503B2 (ja) | 2009-03-31 | 2013-02-06 | ブラザー工業株式会社 | テープカセット |
EP3546232B1 (de) | 2009-03-31 | 2023-11-22 | Brother Kogyo Kabushiki Kaisha | Bandkassette |
WO2010113365A1 (ja) | 2009-03-31 | 2010-10-07 | ブラザー工業株式会社 | テープカセット |
WO2011001487A1 (en) | 2009-06-30 | 2011-01-06 | Brother Kogyo Kabushiki Kaisha | Tape cassette and tape printer |
EP2845743B1 (de) | 2009-12-16 | 2018-01-31 | Brother Kogyo Kabushiki Kaisha | Bandkassette |
EP2520437B1 (de) | 2009-12-28 | 2015-05-20 | Brother Kogyo Kabushiki Kaisha | Bandkassette |
JP5093265B2 (ja) | 2010-02-26 | 2012-12-12 | ブラザー工業株式会社 | テープカセット |
JP5093283B2 (ja) * | 2010-03-31 | 2012-12-12 | ブラザー工業株式会社 | サーマルプリンタ |
CN104527230B (zh) * | 2015-01-09 | 2016-02-17 | 浙江网新电气技术有限公司 | 一种防止局部过热的热敏车票打印机 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3934695A (en) * | 1974-09-23 | 1976-01-27 | Hewlett-Packard Company | Method and apparatus for enhancing and maintaining character quality in thermal printers |
US3975707A (en) * | 1970-04-13 | 1976-08-17 | Canon Kabushiki Kaisha | Device for controlling the density of printing characters |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0365359A (ja) * | 1989-08-04 | 1991-03-20 | Fuji Electric Co Ltd | 多ビット発熱回路の駆動装置 |
-
1992
- 1992-10-19 FR FR9212490A patent/FR2696978B1/fr not_active Expired - Fee Related
-
1993
- 1993-10-15 EP EP19930402552 patent/EP0603017B1/de not_active Expired - Lifetime
- 1993-10-15 DE DE1993603697 patent/DE69303697T2/de not_active Expired - Fee Related
- 1993-10-15 ES ES93402552T patent/ES2090918T3/es not_active Expired - Lifetime
- 1993-10-19 JP JP28443993A patent/JPH06210889A/ja not_active Withdrawn
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3975707A (en) * | 1970-04-13 | 1976-08-17 | Canon Kabushiki Kaisha | Device for controlling the density of printing characters |
US3934695A (en) * | 1974-09-23 | 1976-01-27 | Hewlett-Packard Company | Method and apparatus for enhancing and maintaining character quality in thermal printers |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5910709A (en) * | 1995-12-26 | 1999-06-08 | General Electric Company | Florescent lamp ballast control for zero -voltage switching operation over wide input voltage range and over voltage protection |
Also Published As
Publication number | Publication date |
---|---|
FR2696978A1 (fr) | 1994-04-22 |
DE69303697D1 (de) | 1996-08-22 |
JPH06210889A (ja) | 1994-08-02 |
ES2090918T3 (es) | 1996-10-16 |
EP0603017B1 (de) | 1996-07-17 |
DE69303697T2 (de) | 1996-11-28 |
FR2696978B1 (fr) | 1994-12-09 |
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