EP1186433A1 - Procédé d'impression de lettres utilisant une tête linéaire thermique - Google Patents
Procédé d'impression de lettres utilisant une tête linéaire thermique Download PDFInfo
- Publication number
- EP1186433A1 EP1186433A1 EP00116970A EP00116970A EP1186433A1 EP 1186433 A1 EP1186433 A1 EP 1186433A1 EP 00116970 A EP00116970 A EP 00116970A EP 00116970 A EP00116970 A EP 00116970A EP 1186433 A1 EP1186433 A1 EP 1186433A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ribbon tape
- thermal head
- line thermal
- print object
- letter printing
- 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
- B41J17/00—Mechanisms for manipulating page-width impression-transfer material, e.g. carbon paper
- B41J17/02—Feeding mechanisms
- B41J17/04—Feed dependent on the record-paper feed, e.g. both moved at the same time
-
- 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
- B41J33/00—Apparatus or arrangements for feeding ink ribbons or like character-size impression-transfer material
- B41J33/14—Ribbon-feed devices or mechanisms
- B41J33/36—Ribbon-feed devices or mechanisms with means for adjusting feeding rate
-
- 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
- B41J35/00—Other apparatus or arrangements associated with, or incorporated in, ink-ribbon mechanisms
- B41J35/04—Ink-ribbon guides
- B41J35/08—Ink-ribbon guides with tensioning arrangements
Definitions
- the present invention relates to a line thermal head letter printing method of a synchronous type for making a letter printing by feeding a hot release type thermal transfer ribbon tape following a transfer velocity of a print object sheet and especially relates to a line thermal head letter printing method in which feeding-and winding of the ribbon tape are improved.
- a hot release type thermal transfer ribbon tape following a transfer velocity of a sheet as an object to be printed, such as a packaging material film, (herein referred to as "a print object sheet") and by supplying a line thermal head, such as that called a corner edge type or an end face type, which is pressed against the ribbon tape, with electricity.
- the present invention provides a line thermal head letter printing method comprising steps of: feeding a necessary amount of the ribbon tape at a velocity synchronized with a transfer velocity of the print object sheet by using a stepping motor, and winding the ribbon tape via a friction transmission by a power rotating at a velocity higher than that of the print object sheet being transferred.
- a clear and high quality printing can be done also on the print object sheet which is being transferred at a velocity higher than 10 inch/second or more with which there has been a problem.
- Fig. 1 is an explanatory constructional view of a construction example of a letter printing device for working a letter printing method according to the present invention.
- Fig. 2 is an explanatory constructional view of a partial variation example of the construction of the letter printing device of Fig. 1.
- FIG. 1 shows one example of a letter printing device for working the letter printing method of the present invention.
- numeral 2 designates a print object sheet which is being transferred to a direction shown by arrow.
- Numeral 4 designates a thermal transfer ribbon tape, which is fed from a ribbon tape master roll 6 to be wound around a ribbon tape winding roll 8 while being disposed on the print object sheet 2 on the way.
- the ribbon tape winding roll 8 is rotated by a power transmitted from a power transmission mechanism, described later, via a friction transmission by a sliding clutch.
- Numeral 10 designates a line thermal head and numeral 12 designates a platen unit comprising a plate or roller.
- the platen unit 12 is disposed under the line thermal head 10, thereby the print object sheet 2 and the thermal transfer ribbon tape 4 are put between the line thermal head 10 and the platen unit 12 so that a letter printing may be done on the print object sheet 2.
- Numeral 13 designates a sheet velocity detecting encoder for detecting a transfer velocity of the print object sheet 2.
- Numeral 14 designates a rotary encoder and guide roller, which detects a feeding velocity of the ribbon tape and at the same time guides a feeding of the ribbon tape.
- Numeral 16 designates a guide roller, which guides the feeding of the ribbon tape.
- Numeral 18 designates a stepping motor, which rotates the ribbon tape master roll 6 to feed the ribbon tape in the amount needed for the printing.
- a drive force of the stepping motor 18 is transmitted to the ribbon tape winding roll 8 via a belt 20, a transmission roll 22 and a one-way clutch gear 24 so as to drive the ribbon tape winding roll 8 rotationally.
- the power transmission mechanism comprises the belt 20, the transmission roller 22 and the one-way clutch gear 24 and is constructed such that the ribbon tape winding roll 8 is rotated always in a tape winding direction even if the stepping motor 18 rotates in either direction so as to remove a loosening of the ribbon tape 4.
- a transmission ratio or the drive force which is transmitted from the stepping motor 18 to the ribbon tape winding roll 8 is so set that a stretching force acts always on the ribbon tape 4 as a diameter of the ribbon tape winding roll 8 changes.
- the ribbon tape master roll 6 is driven by the stepping motor 18 so that the ribbon tape 4 is fed at a velocity equal to the transfer velocity of the print object sheet 2 and at the same time the power rotating at a velocity higher than the transfer velocity of the print object sheet 2 is transmitted to the ribbon tape winding roll 8 via the friction transmission by the sliding clutch so that the ribbon tape 4 is wound around the ribbon tape winding roll 8.
- a tension acts always on the ribbon tape 4 so that there occurs no loosening of the ribbon tape hot release portion at the tip of the line thermal head 10 and the ribbon tape 4 may be wound around the ribbon tape winding roll 8 always with a good condition of the hot release.
- a clear letter printing can be done using the hot release type ribbon tape.
- the ribbon tape 4 receives a stretching force acting toward the ribbon tape winding roll 8, as there is acting the torque of the stepping motor 18 on the ribbon tape 4, the ribbon tape 4 is in no case fed more than needed beyond the velocity fed by the drive mechanism using the stepping motor 18.
- the ribbon tape 4 when the ribbon tape 4 is to stand still, as a stationary torque can be obtained by using the stepping motor 18, the ribbon tape 4 is in no case dragged by a contact resistance or an electrostatic force with the print object sheet 2.
- the feeding amount of the ribbon tape 4 is monitored by the rotary encoder and guide roller 14, an amount of the ribbon tape 4 fed during the time of acceleration or deceleration in the process to follow the velocity of the print object sheet 2 can be fed back to be rewound around the ribbon tape master roll 6 only by rotating the stepping motor 18 reversely, hence a consumption of the ribbon tape 4 can be saved.
- the feeding and the winding of the ribbon tape 4 are done both by the roll drive, even when the roll of the ribbon tape is made with the inked face being on the outer side, the inked face of the ribbon tape is in no case damaged by a load while moving on a transfer path. Also, as there is no press feed mechanism using a drive roller, there are greatly reduced a dirt of a feed roller and a falling of sticking matters and an excellent print quality can be maintained.
- the construction may be made such that the ribbon tape master roll 6 and the ribbon tape winding roll 8 are driven separately by two stepping motors 18, 26, as shown in Fig.2.
- the ribbon tape winding roll 8 is driven by the stepping motor 26 via a sliding clutch.
- the necessary amount of the ribbon tape is fed at the velocity synchronized with the transfer velocity of the print object sheet by using the stepping motor and this ribbon tape is wound via the friction transmission by the power rotating at the velocity higher than that of the transferring print object sheet, thereby the ribbon tape is stretched continuously via the friction transmission by the drive force of the velocity higher than that of the print object sheet so that there occurs no loosening of the ribbon tape hot release portion at the tip of the head and the hot release of the ribbon tape takes place always in a good condition.
- a clear and high quality printing can be done also on the print object sheet which is being transferred at the velocity higher than 10 inch/second or more with which there has been a problem.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2000611076 DE60011076T2 (de) | 2000-08-07 | 2000-08-07 | Verfahren zum Buchstabendruck unter Verwendung eines thermischen Linien-Druckkopfs |
EP20000116970 EP1186433B1 (fr) | 2000-08-07 | 2000-08-07 | Procédé d'impression de lettres utilisant une tête linéaire thermique |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20000116970 EP1186433B1 (fr) | 2000-08-07 | 2000-08-07 | Procédé d'impression de lettres utilisant une tête linéaire thermique |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1186433A1 true EP1186433A1 (fr) | 2002-03-13 |
EP1186433B1 EP1186433B1 (fr) | 2004-05-26 |
Family
ID=8169463
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20000116970 Expired - Lifetime EP1186433B1 (fr) | 2000-08-07 | 2000-08-07 | Procédé d'impression de lettres utilisant une tête linéaire thermique |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1186433B1 (fr) |
DE (1) | DE60011076T2 (fr) |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4104965A (en) * | 1975-10-16 | 1978-08-08 | E.D.M. Co., Ltd. | Clutch for permitting a driven member to run at different speed from a drive member |
EP0493942A1 (fr) * | 1990-12-31 | 1992-07-08 | Neopost Limited | Dispositif d'avance pour ruban encreur |
US5593238A (en) * | 1994-08-22 | 1997-01-14 | Intermec Corporation | Method and apparatus for controlling transport of thermal transfer ribbon |
EP0802117A1 (fr) * | 1996-04-19 | 1997-10-22 | Daisey Kikai Co., Ltd. | Tête imprimante linéaire thermique |
US5908251A (en) * | 1994-05-20 | 1999-06-01 | Markem Technologies Ltd. | Method of printing |
WO1999034983A1 (fr) * | 1998-01-12 | 1999-07-15 | Easyprint Aps | Procede d'impression par transfert thermique et imprimante thermique |
US5993092A (en) * | 1997-02-26 | 1999-11-30 | Itw Limited | Printer with reversible ribbon driving means for rewinding overshot ribbon |
-
2000
- 2000-08-07 DE DE2000611076 patent/DE60011076T2/de not_active Expired - Fee Related
- 2000-08-07 EP EP20000116970 patent/EP1186433B1/fr not_active Expired - Lifetime
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4104965A (en) * | 1975-10-16 | 1978-08-08 | E.D.M. Co., Ltd. | Clutch for permitting a driven member to run at different speed from a drive member |
EP0493942A1 (fr) * | 1990-12-31 | 1992-07-08 | Neopost Limited | Dispositif d'avance pour ruban encreur |
US5908251A (en) * | 1994-05-20 | 1999-06-01 | Markem Technologies Ltd. | Method of printing |
US5593238A (en) * | 1994-08-22 | 1997-01-14 | Intermec Corporation | Method and apparatus for controlling transport of thermal transfer ribbon |
EP0802117A1 (fr) * | 1996-04-19 | 1997-10-22 | Daisey Kikai Co., Ltd. | Tête imprimante linéaire thermique |
US5993092A (en) * | 1997-02-26 | 1999-11-30 | Itw Limited | Printer with reversible ribbon driving means for rewinding overshot ribbon |
WO1999034983A1 (fr) * | 1998-01-12 | 1999-07-15 | Easyprint Aps | Procede d'impression par transfert thermique et imprimante thermique |
Also Published As
Publication number | Publication date |
---|---|
DE60011076T2 (de) | 2005-05-25 |
EP1186433B1 (fr) | 2004-05-26 |
DE60011076D1 (de) | 2004-07-01 |
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