WO2005082634A1 - プリンタ装置 - Google Patents
プリンタ装置 Download PDFInfo
- Publication number
- WO2005082634A1 WO2005082634A1 PCT/JP2005/001855 JP2005001855W WO2005082634A1 WO 2005082634 A1 WO2005082634 A1 WO 2005082634A1 JP 2005001855 W JP2005001855 W JP 2005001855W WO 2005082634 A1 WO2005082634 A1 WO 2005082634A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- gear
- motor
- platen roller
- main frame
- mounting member
- Prior art date
Links
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
- B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
- B41J29/02—Framework
- B41J29/023—Framework with reduced dimensions
-
- 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
- B41J11/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
- B41J11/02—Platens
- B41J11/04—Roller platens
-
- 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
-
- 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
- B41J2/375—Protection arrangements against overheating
-
- 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
- B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
- B41J29/38—Drives, motors, controls or automatic cut-off devices for the entire printing mechanism
Definitions
- the present invention relates to a printer that conveys paper with a platen roller, and more particularly, to a configuration of a drive transmission mechanism for driving a platen roller.
- thermal head having a heating element is pressed against a platen roller.
- Thermal printers that print with a heat-sensitive recording paper between them have been widely used.
- a conventional thermal printer includes, for example, a printing unit including at least a thermal head, a conveying unit including a platen roller, a drive transmission mechanism including a motor serving as a driving source of the platen roller, and a force main frame.
- the main frame incorporating the components is fixed to a predetermined position of the printer housing.
- FIG. 5 is a perspective view showing a drive transmission mechanism of a conventional thermal printer.
- the main frame 30 is formed in a substantially U-shape including a side wall and a bottom plate facing each other in the paper width direction, and a drive gear 21a of the motor 21 is introduced into the right side wall 30R and the position of the motor 21 is determined.
- An introduction port 30a is provided, and two gear support shafts 31, 32 are driven outwardly beside the introduction port 30a. Since the main frame 30 needs appropriate rigidity and durability, it is usually processed into a predetermined shape by sheet metal processing using a metal material such as iron. Therefore, it is difficult to integrally form the gear support shafts 31, 32 with the main frame 30, and as described above, the gear support shafts 31, 32 are provided by driving.
- Intermediate gears 23, 24 for transmitting the driving force of the motor 21 to the platen roller are mounted on gear support shafts 31, 32 provided on the main frame 30, and are coupled to the intermediate gears 23, 24.
- the motor 21 is screwed to the main frame 30 so as to perform the operation.
- the individual components such as the intermediate gears 23, 24 and the motor 21 are directly attached to the main frame 30 to form a drive transmission mechanism.
- dust or the like may enter the drive transmission mechanism.
- Some thermal printers have a dust cover attached to the outside of the gears.
- the present applicant has constituted a housing frame with two resin frames that can be divided into upper and lower parts, and a motor is provided on the housing frame. Further, a thermal printer has been proposed in which a plurality of holding portions for rotatably holding a rotation shaft of an intermediate gear are formed (Patent Documents 1 and 2).
- Patent Document 1 Japanese Patent Application Laid-Open No. 2003-237118
- Patent Document 2 Japanese Patent Application Laid-Open No. 2003-237121
- the drive transmission mechanism must have a tolerance of 30 m or less. This is because, if there is a large variation in parts manufacturing or assembly, the distance between the shafts of the motor drive gear, the intermediate gear, and the driven gear of the platen roller will not be constant, and the drive transmission mechanism will have large teeth. This is because the efficiency of the motor torque deteriorates due to jumping.
- gear support shafts 31, 32 intermediate gears 23, 24 driven into the main frame 30 are attached, and these are mounted on the drive gear 21a of the motor 21, the platen roller. Therefore, there is a limit in assembling the drive transmission mechanism with high accuracy, which has many factors that affect the tolerance between the gears. That is, since the inclination generated when driving the gear shafts 31 and 32 affects the tolerance between the gears, the motor 21 is positioned by the introduction hole 30a of the main frame 30, so that it is not easy to mount the motor 21 with high accuracy. Absent. Therefore, when the transmission efficiency of the motor torque is deteriorated and the durability of the drive transmission mechanism itself is reduced, a problem may occur.
- An object of the present invention is to provide a printer capable of responding to miniaturization and large output by improving the heat radiation effect of a motor as a driving source.
- the present invention provides a platen roller for conveying recording paper, a print head arranged to face the platen roller, and a drive unit for driving the platen roller to rotate.
- a printer having at least a main frame having a pair of side walls capable of rotatably supporting the platen roller, wherein the drive cut comprises a motor and a rotational driving force of the motor applied to the platen roller.
- the drive gear and the intermediate gear of the motor are formed by the gear mounting member and one side wall of the main frame. It is designed to be stored in a space where
- the gear mounting member is formed by die casting of an alloy material.
- an alloy material Specifically, a material having excellent heat dissipation and appropriate rigidity is desirable, and for example, a zinc alloy, a magnesium alloy, and a titanium alloy can be used.
- the motor is mounted on the gear mounting member via a flange member, and the flange member has an engagement groove that engages with a tip end of the gear shaft. The tip is engaged to position the motor.
- a thermal head is provided as a printing means.
- FIG. 1 is a perspective view of a printing unit of a thermal printer to which the present invention is applied
- FIG. 2 is a perspective view in which members other than a drive cut are removed from a main frame
- FIG. FIG. 4 is an enlarged perspective view
- FIG. 4 is an exploded perspective view of a drive unit
- FIG. 5 is a perspective view showing a conventional drive transmission mechanism.
- FIG. 1 is a perspective view of a printing unit of a thermal printer to which the present invention is applied
- FIG. 2 is a perspective view of a main frame in which members other than a driving unit are removed.
- the thermal printer 100 is provided with a plurality of heating elements 11a arranged in a horizontal line.
- the printing unit includes a roller (not shown), a drive unit 20 that rotationally drives the platen roller via a gear transmission mechanism, and a main frame 10 to which the above members can be attached.
- the main frame 10 is formed by iron sheet metal processing into a substantially U-shape including side walls and a bottom plate facing each other in the paper width direction.
- the left and right side walls 10L, 10R of the main frame 10 are provided with receiving grooves 10a, 10a for holding a rotating shaft of a platen roller, and a thermal head 11 (or a head support 12 to which the thermal head 11 is fixed) and Shaft holes 10b, 10b are provided for passing a shaft (not shown) for swingably supporting the lock arm member 13, and a screw hole (not shown) for screwing a drive unit is further provided on the right side wall 10R.
- a thermal head 11 or a head support 12 to which the thermal head 11 is fixed
- Shaft holes 10b, 10b are provided for passing a shaft (not shown) for swingably supporting the lock arm member 13, and a screw hole (not shown) for screwing a drive unit is further provided on the right side wall 10R.
- the lock arm member 13 is formed in a substantially U-shape as a whole, and has hook portions 13b, 13b for locking a rotation shaft of a platen roller on left and right arms, and a shaft hole for passing a shaft (see FIG. (Not shown) is provided.
- the thermal head 11 is fixed to a head support 12 functioning as a heat radiating means for radiating the heat generated by the thermal head 11, and the thermal head 11 is held between the back surface of the head support and the back plate of the lock arm member 13. Multiple coil panels 14, 14, ⁇ ⁇ are biased to retreat.
- the back of the thermal head 13 is exposed from below the back of the head support 15, and an FPC (Flexile Print Circuit) 16 is connected to a substantially center of the exposed back of the thermal head 13.
- the lock arm member 13 and the thermal head 11 are rotatably supported by shafts passing through the shaft holes 10b, 10b of the main frame 10. Further, a paper guide 15 is attached in front of the thermal head 11.
- the arm of the lock arm member 13 is pulled rearward by the coil panel 14. Therefore, the rotation shaft of the platen roller is held between the receiving grooves 10a, 10a of the main frame 10 and the hook portions 13b, 13b of the lock arm member 13, and the thermal head 11 and the platen roller are pressed against each other. You. By pressing down an opening / closing lever 13a provided at the front of the right arm of the lock arm member 13, the lock arm member 13 is rotated around the shaft, and the hook portion 13b is released from the rotation shaft of the platen roller. Then, the platen roller becomes detachable.
- the present embodiment differs from a conventional printer in that individual components of a motor and a gear transmission mechanism can be mounted on the main frame 10 after being assembled as a drive unit 20 instead of being directly mounted on the main frame 10.
- FIG. 3 is an enlarged perspective view of the drive unit
- FIG. 4 is an exploded perspective view of the drive unit.
- the drive unit 20 includes a motor 21, intermediate gears 23 and 24 for transmitting the rotational driving force of the motor 21 to the platen roller, and a gear mounting member 22 for attaching the intermediate gears 23 and 24. .
- the gear mounting member 22 is formed by die-casting a zinc alloy, and gear support shafts 22a, 22a for supporting the intermediate gears 23, 24 are formed integrally. Intermediate gears 23 and 24 are inserted through gear support shafts 22a and 22b of the gear mounting member 22, respectively, and are engaged with each other. Then, the motor 21 has its drive gear 21a inserted into the storage portion 22c, and in a state where the drive gear 21a and the intermediate gear 24 are combined, the motor 21 is screwed to the gear mounting member 22 at two places by screws (not shown), and the drive unit 20 Is configured. At this time, the tip of the gear support shaft 22b fits into the engagement groove 25a provided in the motor flange 25 to support the intermediate gear 24 and to position the motor 21. Further, since the motor 21 is closely attached to the gear mounting member 22, heat generated from the motor 21 is radiated through the gear mounting member 22. For this reason, it is desirable that the gear mounting member 22 be formed of a material for heat dissipation.
- the drive unit 20 having the above-described configuration is screwed to the right side wall 10R of the main frame 10 with a screw 26. At this time, the tip of the gear support shaft 22a fits into an engagement groove provided in the main frame 10. To support the intermediate gear 23.
- the platen roller can be When mounted on the arm member 13, the driven gear of the platen roller is engaged with the intermediate gear 23, whereby the rotational driving force of the motor 21 is transmitted to the platen roller.
- the gear supporting shaft is provided by driving into the main frame, so that the distance between the shafts of the gears is one of the causes of the variation. Since the gear support shafts 22a and 22b are formed integrally with the gear mounting member 22 by machining, the accuracy of assembling the motor drive gear 21a, the intermediate gears 23 and 24, and the driven gear of the platen roller is significantly improved. . Therefore, the dispersion of the distance between the shafts of the gears is eliminated, so that the transmission efficiency of the motor torque is improved, and the durability of the thermal printer itself is also improved. For example, the durability of the conventional thermal printer was 30 km, which is the paper transport distance. In the present embodiment, the durability was significantly improved to 50 km.
- the drive unit 20 in which the motor 21 and the intermediate gears 23, 24 are mounted and positioned on the gear mounting member 22 can be mounted on the main frame 10, the efficiency of the assembling work is remarkably improved. Further, since the drive gear 21a and the intermediate gears 23, 24 of the motor 21 are housed in the space formed by the gear mounting member 22 and the right side wall 10R of the main frame 10, dust and the like do not enter. That is, it is possible to reduce the number of parts that do not require the installation of a dust-proof cover in order to prevent dust from being mixed as in the related art.
- the material of the gear mounting member 22 is a zinc alloy.
- a magnesium alloy, a titanium alloy, or another alloy material having excellent heat dissipation and appropriate rigidity can be used instead.
- it is desirable to use an alloy material in terms of heat resistance and heat dissipation it is also possible to form the gear mounting member 22 with a resin material. In this case as well, the effect of improving the assembly efficiency is not shown. can get.
- the gear support shaft for supporting the intermediate gear is integrally formed with the gear mounting member.
- the drive unit which is positioned by attaching the motor and the intermediate gear to the gear attachment member, can be attached to the main frame, the efficiency of the assembling work is remarkably improved.
- the drive gear and the intermediate gear of the motor are housed in the space formed by the gear mounting member and one side wall of the main frame, dust resistance can be exhibited without attaching a cover as in the conventional case. The number of parts can be reduced. Further, since the heat generated by the motor is radiated through the gear mounting member, the heat radiation efficiency is improved and the output can be increased.
- the gear mounting member is formed by die casting of an alloy material
- the gear support shaft can be provided with extremely high processing accuracy.
- a zinc alloy, a magnesium alloy, and a titanium alloy having excellent heat dissipation properties and appropriate rigidity are used, for example, the heat generated by the motor can be efficiently released and the durability is excellent.
- the motor is attached to the gear housing via a flange member, and the flange member has an engaging groove that engages with the tip of the gear shaft, and the tip of the gear shaft engages with the engaging groove.
- the accuracy of assembling the motor can be improved, and the variation in the center distance between the driving gear and the intermediate gear of the motor can be eliminated.
- the present invention is particularly effective in a thermal printer that requires a reduction in size and an increase in output.
Landscapes
- Handling Of Sheets (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/590,587 US7862247B2 (en) | 2004-02-26 | 2005-02-08 | Printer with gear fitting member for mounting drive and idler gears |
EP05709907A EP1719628B1 (en) | 2004-02-26 | 2005-02-08 | Printer |
KR1020067016844A KR101076532B1 (ko) | 2004-02-26 | 2005-02-08 | 프린터 장치 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004052098A JP4421916B2 (ja) | 2004-02-26 | 2004-02-26 | プリンタ装置 |
JP2004-052098 | 2004-02-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005082634A1 true WO2005082634A1 (ja) | 2005-09-09 |
Family
ID=34908657
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/001855 WO2005082634A1 (ja) | 2004-02-26 | 2005-02-08 | プリンタ装置 |
Country Status (6)
Country | Link |
---|---|
US (1) | US7862247B2 (ja) |
EP (1) | EP1719628B1 (ja) |
JP (1) | JP4421916B2 (ja) |
KR (1) | KR101076532B1 (ja) |
CN (1) | CN100509417C (ja) |
WO (1) | WO2005082634A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090074496A1 (en) * | 2007-09-19 | 2009-03-19 | Fujitsu Component Limited | Printing apparatus |
US20090110459A1 (en) * | 2007-10-24 | 2009-04-30 | Ricoh Company, Ltd. | Image forming device |
CN108016150A (zh) * | 2017-11-30 | 2018-05-11 | 森大(深圳)技术有限公司 | 送料辊支撑座及具有送料辊支撑座的打印设备 |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8002214B2 (en) * | 2006-03-28 | 2011-08-23 | Seiko Epson Corporation | Rolled medium holding device holding a rolled medium at both ends and a recording apparatus including the rolled medium holding device |
JP4824619B2 (ja) | 2007-04-26 | 2011-11-30 | 株式会社サトー | プリンターにおけるギアユニット装置 |
JP5048432B2 (ja) * | 2007-09-19 | 2012-10-17 | 富士通コンポーネント株式会社 | プリンタ装置 |
JP5159244B2 (ja) | 2007-10-24 | 2013-03-06 | シチズン・システムズ株式会社 | サーマルプリンタ |
JP5671858B2 (ja) * | 2010-07-15 | 2015-02-18 | セイコーエプソン株式会社 | 印刷装置、ロール径算出方法、及び、プログラム |
JP6685830B2 (ja) * | 2016-05-16 | 2020-04-22 | セイコーインスツル株式会社 | サーマルプリンタ及び携帯型端末 |
JP6669257B2 (ja) * | 2016-07-27 | 2020-03-18 | 京セラドキュメントソリューションズ株式会社 | 駆動伝達機構およびそれを備えた画像形成装置 |
EP3566876B1 (en) * | 2018-05-08 | 2020-08-26 | APS Trading OOD | Compact thermal printing mechanism |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03118173A (ja) * | 1989-10-02 | 1991-05-20 | Sharp Corp | 紙送り装置 |
JPH07237324A (ja) * | 1994-02-28 | 1995-09-12 | Tamura Seisakusho Co Ltd | サーマルプリンタの紙送り駆動装置 |
JPH08156350A (ja) * | 1994-12-05 | 1996-06-18 | Seiko Epson Corp | プリンタ |
JP2000301784A (ja) * | 1999-04-26 | 2000-10-31 | Sato Corp | バーコード印字装置 |
JP2003162070A (ja) * | 2001-11-27 | 2003-06-06 | Fuji Photo Film Co Ltd | シート材保持ドラム |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2186342A (en) * | 1986-02-06 | 1987-08-12 | Johnson Electric Ind Mfg | An electric motor and gearbox unit and component parts thereof |
JPH01145170A (ja) * | 1987-11-30 | 1989-06-07 | Nec Home Electron Ltd | 紙送り装置 |
DE4039513A1 (de) * | 1989-12-11 | 1991-06-20 | Seiko Instr Inc | Kompakt-zeilen-thermodrucker |
JPH0986000A (ja) * | 1995-09-27 | 1997-03-31 | Casio Comput Co Ltd | 印刷装置 |
JP2000094767A (ja) * | 1998-09-25 | 2000-04-04 | Fujitsu Takamisawa Component Ltd | サーマルプリンタ |
EP1020296B1 (en) * | 1999-01-11 | 2005-09-07 | Seiko Epson Corporation | Power transmission switching device |
WO2002042084A1 (fr) * | 2000-11-27 | 2002-05-30 | F & F Limited | Imprimante |
JP2004189384A (ja) * | 2002-12-10 | 2004-07-08 | Murata Mach Ltd | 反転搬送ユニット及び画像形成装置 |
US20050022946A1 (en) * | 2003-07-31 | 2005-02-03 | Douglas Domel | Drive mechanism for motorized window coverings |
-
2004
- 2004-02-26 JP JP2004052098A patent/JP4421916B2/ja not_active Expired - Fee Related
-
2005
- 2005-02-08 KR KR1020067016844A patent/KR101076532B1/ko active IP Right Grant
- 2005-02-08 CN CNB2005800060247A patent/CN100509417C/zh not_active Expired - Fee Related
- 2005-02-08 WO PCT/JP2005/001855 patent/WO2005082634A1/ja active Application Filing
- 2005-02-08 US US10/590,587 patent/US7862247B2/en not_active Expired - Fee Related
- 2005-02-08 EP EP05709907A patent/EP1719628B1/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03118173A (ja) * | 1989-10-02 | 1991-05-20 | Sharp Corp | 紙送り装置 |
JPH07237324A (ja) * | 1994-02-28 | 1995-09-12 | Tamura Seisakusho Co Ltd | サーマルプリンタの紙送り駆動装置 |
JPH08156350A (ja) * | 1994-12-05 | 1996-06-18 | Seiko Epson Corp | プリンタ |
JP2000301784A (ja) * | 1999-04-26 | 2000-10-31 | Sato Corp | バーコード印字装置 |
JP2003162070A (ja) * | 2001-11-27 | 2003-06-06 | Fuji Photo Film Co Ltd | シート材保持ドラム |
Non-Patent Citations (1)
Title |
---|
See also references of EP1719628A4 * |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090074496A1 (en) * | 2007-09-19 | 2009-03-19 | Fujitsu Component Limited | Printing apparatus |
US8550733B2 (en) * | 2007-09-19 | 2013-10-08 | Fujitsu Component Limited | Printing apparatus with sealed gear drive mechanism |
US20090110459A1 (en) * | 2007-10-24 | 2009-04-30 | Ricoh Company, Ltd. | Image forming device |
US8260187B2 (en) * | 2007-10-24 | 2012-09-04 | Ricoh Company, Ltd. | Image forming device |
CN108016150A (zh) * | 2017-11-30 | 2018-05-11 | 森大(深圳)技术有限公司 | 送料辊支撑座及具有送料辊支撑座的打印设备 |
CN108016150B (zh) * | 2017-11-30 | 2020-01-03 | 森大(深圳)技术有限公司 | 送料辊支撑座及具有送料辊支撑座的打印设备 |
Also Published As
Publication number | Publication date |
---|---|
EP1719628A1 (en) | 2006-11-08 |
EP1719628B1 (en) | 2009-11-04 |
US20080019757A1 (en) | 2008-01-24 |
CN100509417C (zh) | 2009-07-08 |
US7862247B2 (en) | 2011-01-04 |
KR101076532B1 (ko) | 2011-10-24 |
KR20060127148A (ko) | 2006-12-11 |
JP2005238658A (ja) | 2005-09-08 |
CN1922024A (zh) | 2007-02-28 |
EP1719628A4 (en) | 2008-10-15 |
JP4421916B2 (ja) | 2010-02-24 |
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