WO2007116615A1 - 印字ヘッド及びこれを備えたプリンタ - Google Patents
印字ヘッド及びこれを備えたプリンタ Download PDFInfo
- Publication number
- WO2007116615A1 WO2007116615A1 PCT/JP2007/053047 JP2007053047W WO2007116615A1 WO 2007116615 A1 WO2007116615 A1 WO 2007116615A1 JP 2007053047 W JP2007053047 W JP 2007053047W WO 2007116615 A1 WO2007116615 A1 WO 2007116615A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- print head
- spacer
- wire
- distance
- 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
- B41J25/00—Actions or mechanisms not otherwise provided for
- B41J25/304—Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface
- B41J25/308—Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface with print gap adjustment mechanisms
-
- 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
- B41J2/22—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of impact or pressure on a printing material or impression-transfer material
- B41J2/23—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of impact or pressure on a printing material or impression-transfer material using print wires
- B41J2/235—Print head assemblies
Definitions
- the present invention relates to a print head that prints on a print medium by hitting the tip of a wire, and a printer equipped with the print head.
- Dot impact type print heads are used in printing apparatuses, recording apparatuses, and the like. As shown in Patent Document 1, such a print head is attracted by the magnetic force generated in the magnetic core by supplying power to the exciting coil and is oscillated by being biased to the standby position by the return spring. A plurality of print levers that are respectively fixed to one end of the print lever and urged by the print lever to strike and print the print surface of the print paper via the ink ribbon There is.
- Patent Document 2 there is also a roller provided with a roller for ensuring a distance between the front end portion of the printing wire and the printing surface of the printing paper.
- Patent Document 1 Japanese Patent Laid-Open No. 11-334115
- Patent Document 2 Japanese Patent Laid-Open No. 11-179997
- the tip of the print wire may be worn by being repeatedly struck by the print surface of the print paper during long use. there were.
- Patent Document 2 an opening for screwing the roller support to the carrier on which the print head is mounted extends in the adjustment direction, and printing is performed by loosening the screw and adjusting the position of the roller relative to the print surface. The distance between the tip of the wire and the printing surface can be adjusted.
- the adjustment work required by the configuration that defines the adjustment amount is complicated.
- the present invention has been made in view of the above circumstances, and includes a print head and a print head that can easily adjust the distance between the tip of the print wire and the print medium to prevent a decrease in print force.
- An object is to provide a printer.
- the print head of the present invention comprises:
- a plurality of wires having tip portions that are struck against a print surface of a print medium, a rotatable roller that slides on the print medium to secure a distance between the print medium and the tip portion of the wire, and the roller A print head, and a frame to which the roller support is attached,
- a spacer for adjusting a distance between the print medium and the tip of the wire is provided between the support portion of the roller and the frame, and the spacer includes the support portion of the roller, the frame, and the frame. It is characterized by being clamped between the two.
- the spacer may also be configured with a plurality of sheets.
- the spacer may be formed with a knob biased to either the left or right.
- the spacers may be arranged alternately on the front and back sides!
- the knob may be provided with a hole! /.
- the support portion of the roller is fastened to the frame by screws.
- the spacer may include a groove having one end opened at an edge of the spacer and allowing the screw to pass therethrough.
- a fixed spacer fixed between the spacer and the spacer may be further provided between the support portion of the roller and the frame.
- a printer according to the present invention includes the above-described print head.
- FIG. 1 is an exploded perspective view showing a configuration of a print head according to an embodiment of the present invention.
- FIG. 2 is a side view of the print head shown in FIG.
- FIG. 3 is a front view of the print head shown in FIG. 1.
- FIG. 4 is a plan view of the print head shown in FIG. 1.
- FIG. 5 (a) is a plan view of the printer having the print head shown in FIG. 1, and (b) is a cross-sectional view of the printer shown in FIG.
- FIG. 6 (a) is an explanatory diagram showing a state before the print head extraction spacer shown in Fig. 1 is extracted, and (b) is an illustration of the print head extraction spacer shown in Fig. 1. It is explanatory drawing showing a back state.
- the print head 1 is used for a dot impact type printer, and performs printing by hitting the tip of a wire 11 against a printing surface of a printing medium such as printing paper 20 via an ink ribbon 32.
- the print head 1 includes a wire 11, a tracing roller 12, a roller support portion 13 that supports the tracing aperture roller 12, an extraction spacer 14, and a wire frame. 15, a frame 16, and a height adjusting spacer 18.
- a plurality of levers each having one end fixed to the rear ends of the wires 11 are arranged radially, and a magnetic force for swinging the levers is generated (not shown). Coils, yokes, etc. are also arranged.
- the tip of the wire 11 is moved to the wire frame by swinging the lever by magnetic force.
- a plurality of wires 11 are arranged in the wire frame 15.
- the wire 11 is disposed in the wire frame 15 so as to be swingable so that the tip of the wire 11 can protrude from two rows of openings 15 a formed at the tip of the wire frame 15.
- the wire frame 15 is attached to stand on the bottom surface 16a of the frame 16.
- the tracing roller 12 is for securing a distance between the printing paper 20 and the tip of the wire 11 as shown in FIGS. As shown in FIG. 5, the tracing roller 12 presses the conveyed printing paper 20 on the platen 36 and stabilizes the distance between the printing paper 20 and the tip of the wire 11.
- the tracing roller 12 is rotatable and slides on the printing paper 20.
- the tracing roller 12 is supported by the roller support portion 13 so as to be rotatable in the moving direction of the print head 1.
- the roller support portion 13 is attached to stand on the bottom surface 16a of the frame 16. That is, the wire frame 15 on which the wire 11 is disposed and the roller support portion 13 are attached to the frame 16 so as to be parallel to each other.
- the roller support portion 13 is fixed to the bottom surface 16 a of the frame 16 via the height adjusting spacer 18 and the extraction spacer 14 by a fixing screw 17.
- the tracing roller 12 is disposed close to the upper part of the wire frame 15.
- the height adjusting spacer 18 is a spacer for adjusting the height of the tracing roller 12 from the reference surface (bottom surface) 16 a of the frame 16.
- the height adjusting spacer 18 has a fixing screw 17
- a fixing hole 18a for fixing between the roller support portion 13 and the reference surface 16a of the frame 16 is formed.
- the extraction spacer 14 is a detachable spacer for adjusting the height of the tracing roller 12 from the reference surface 16 a of the frame 16. That is, the extraction spacer 14 is pulled out to adjust the height of the tracing roller 12, and the distance between the printing paper 20 and the reference surface 16 a of the frame 16 is shortened. This is to reduce the distance.
- Two sampling spacers 14 are provided.
- the extraction spacer 14 is formed with a knob 14a in which a round hole 141a is formed, and a groove 14b in which the fixing screw 17 is loosely fitted.
- the knob 14a is formed to be biased to the left or right. Therefore, as shown in FIG. 1 and FIG. 3, the two extraction spacers 14 are arranged by alternately placing the other extraction spacers 14 upside down with respect to one of the extraction spacers 14. The position of the knob 14a is assigned to the left and right. Further, the knob 14a is easily grasped by the round hole 141a.
- the two spacers 14 are fixed between a height adjusting spacer 18 and a flange portion 13 a on the bottom surface of the roller support portion 13 by a fixing screw 17. As shown in FIG. 3, the spacer 14 is arranged on the outer side to the extent that it can be gripped from the outer edge of the flange portion 13a so that the knob 14a is not overlapped and hidden by the flange portion 13a of the roller support portion 13.
- the extraction spacer 14 can be easily removed by grasping the knob 14a because the fixing screw 17 is loosely fitted in the groove 14b by loosening the fixing screw 17.
- the thickness of the sampling spacer 14 is about 0.05 mm.
- the printer 30 includes a print head 1, a ribbon cassette 31 set on the print head 1, an ink ribbon 32 provided in the ribbon force set 31, a carriage 33 of the print head 1, and a carriage 33.
- a carriage shaft 34 that is movably supported in the left-right direction, a conveyance roller 35 for conveying the printing paper 20 in the direction of the arrow in FIG. 5 (b), and a platen 36 that supports the printing paper 20 And a biasing spring 37 that biases the platen 36 toward the print head 1.
- the carriage shaft 34 and the transport roller 35 are installed in parallel to the housing 40.
- the print head 1 in which the ribbon cassette 31 is set is connected via the carriage 33. Then, while moving the carriage shaft 34 in the extending direction, the printing paper 20 is conveyed by the conveying roller 35 in the direction perpendicular to the extending direction of the conveying roller 35 as necessary.
- FIG. 6 (a) shows a state before the extraction spacer 14 is extracted
- FIG. 6 (b) shows a state after the two extraction spacers 14 are extracted.
- the distance between the tip of the tracing roller 12 and the reference surface 16a of the frame 16 before removing the extraction spacer 14 is L1
- the thickness of one extraction spacer 14 is T
- dl be the distance between the tip of the protruding wire 11 1 and the printing surface of the printing paper 20 before the extraction spacer 14 is extracted.
- the distance between the protruding tip of the wire 11 and the printing surface of the printing paper 20 is also reduced to dl-2t, the tip of the wire 11 approaches the printing surface of the printing paper 20, and the wire 11 is worn. This is the distance before Thereby, good printing can be obtained again.
- the print head according to the present embodiment even when the leading end of the wire 11 is worn by pulling out the sampling spacer 14, the distance between the leading end of the wire 11 and the printing surface of the printing paper 20. Since it is possible to reduce the printing force, the printing force can be prevented from being reduced.
- the print head of the present embodiment includes two extraction spacers 14, the distance between the tip of the wire 11 and the print surface of the print paper 20 can be adjusted step by step.
- the two sampling spacers 14 are turned upside down with respect to one of the sampling spacers 14 so as to be alternately stacked. Since the positions of the 14 knobs 14a are assigned to the left and right, the spacers 14 can be easily removed one by one. When using multiple spacers in this way, if the spacers are designed so that they do not overlap with each other, the spacers can be easily removed one by one. Can be extracted.
- the printer according to the present embodiment is provided with the print head as described above, it is possible to perform a good printing operation without reducing the printing force.
- sampling spacer 1 the sampling spacer 1
- the force extraction spacer described in the example with 2 4 may be 1 or 3 or more.
- the thickness of the sampling spacer 14 is formed to about 0.05 mm.
- the thickness of the spacer 14 can be arbitrarily determined, and the number of the spacers 14 to be used can be appropriately determined.
- a printer equipped with a print head is provided with a counter that counts the number of prints of a specific wire 11 or the average number of prints of a plurality of wires 11 and a display unit for the count value, and a plurality of samples are extracted according to a predetermined count value.
- the spacers 14 may be extracted in a predetermined order.
- a sampling spacer in which the positions of the force-rearing knobs described in the example in which the sampling spacers 14 are alternately arranged on the front and back sides is biased left and right is used. It may be.
- the present invention provides a technical innovation in the OA equipment manufacturing industry, or a printing device. Potential to contribute to any industry.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112007000887T DE112007000887T5 (de) | 2006-04-10 | 2007-02-20 | Druckkopf und damit ausgestatteter Drucker |
US12/296,914 US20090256872A1 (en) | 2006-04-10 | 2007-02-20 | Print Head and Printer Equipped Therewith |
CN2007800126633A CN101421112B (zh) | 2006-04-10 | 2007-02-20 | 打印头以及具备该打印头的打印机 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006-107274 | 2006-04-10 | ||
JP2006107274A JP4461115B2 (ja) | 2006-04-10 | 2006-04-10 | 印字ヘッド及びこれを備えたプリンタ |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007116615A1 true WO2007116615A1 (ja) | 2007-10-18 |
Family
ID=38580917
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2007/053047 WO2007116615A1 (ja) | 2006-04-10 | 2007-02-20 | 印字ヘッド及びこれを備えたプリンタ |
Country Status (5)
Country | Link |
---|---|
US (1) | US20090256872A1 (ja) |
JP (1) | JP4461115B2 (ja) |
CN (1) | CN101421112B (ja) |
DE (1) | DE112007000887T5 (ja) |
WO (1) | WO2007116615A1 (ja) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5803640B2 (ja) * | 2011-12-09 | 2015-11-04 | 沖電気工業株式会社 | 印刷装置 |
US10429760B2 (en) | 2016-12-15 | 2019-10-01 | Brother Kogyo Kabushiki Kaisha | Image forming apparatus |
US10228631B2 (en) * | 2016-12-15 | 2019-03-12 | Brother Kogyo Kabushiki Kaisha | Image forming apparatus, drum unit, and manufacturing method for the image forming apparatus |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003025617A (ja) * | 2001-07-23 | 2003-01-29 | Toshiba Tec Corp | ワイヤドットプリンタヘッド及びワイヤドットプリンタ |
JP2005271398A (ja) * | 2004-03-24 | 2005-10-06 | Seiko Epson Corp | 記録装置 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5816720A (en) * | 1994-03-15 | 1998-10-06 | Interbold | Printer mechanism for automated teller machine |
JPH11179997A (ja) | 1997-12-24 | 1999-07-06 | Aimesu:Kk | 衝撃型プリンタ |
JPH11334115A (ja) | 1998-05-25 | 1999-12-07 | Seiko Precision Inc | 印字ヘッド |
US6707571B1 (en) * | 1998-08-28 | 2004-03-16 | Seiko Epson Corporation | Character printing method and device as well as image forming method and device |
US7004652B2 (en) * | 2000-05-23 | 2006-02-28 | Silverbrook Research Pty Ltd | Printer for accommodating varying page thickness |
JP2006107274A (ja) | 2004-10-07 | 2006-04-20 | Matsushita Electric Ind Co Ltd | ハッシュ関数演算システム、暗号化システムおよび不正解析・改竄防止システム |
-
2006
- 2006-04-10 JP JP2006107274A patent/JP4461115B2/ja not_active Expired - Fee Related
-
2007
- 2007-02-20 DE DE112007000887T patent/DE112007000887T5/de not_active Withdrawn
- 2007-02-20 WO PCT/JP2007/053047 patent/WO2007116615A1/ja active Search and Examination
- 2007-02-20 CN CN2007800126633A patent/CN101421112B/zh not_active Expired - Fee Related
- 2007-02-20 US US12/296,914 patent/US20090256872A1/en not_active Abandoned
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003025617A (ja) * | 2001-07-23 | 2003-01-29 | Toshiba Tec Corp | ワイヤドットプリンタヘッド及びワイヤドットプリンタ |
JP2005271398A (ja) * | 2004-03-24 | 2005-10-06 | Seiko Epson Corp | 記録装置 |
Also Published As
Publication number | Publication date |
---|---|
DE112007000887T5 (de) | 2009-02-19 |
JP4461115B2 (ja) | 2010-05-12 |
US20090256872A1 (en) | 2009-10-15 |
JP2007276331A (ja) | 2007-10-25 |
CN101421112A (zh) | 2009-04-29 |
CN101421112B (zh) | 2010-06-09 |
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