JPS62253467A - Cooler for thermal printer - Google Patents

Cooler for thermal printer

Info

Publication number
JPS62253467A
JPS62253467A JP61097719A JP9771986A JPS62253467A JP S62253467 A JPS62253467 A JP S62253467A JP 61097719 A JP61097719 A JP 61097719A JP 9771986 A JP9771986 A JP 9771986A JP S62253467 A JPS62253467 A JP S62253467A
Authority
JP
Japan
Prior art keywords
hole
ink sheet
exhaust
sheet holder
heat sink
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.)
Pending
Application number
JP61097719A
Other languages
Japanese (ja)
Inventor
Masatoshi Koyanagi
小柳 正俊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP61097719A priority Critical patent/JPS62253467A/en
Publication of JPS62253467A publication Critical patent/JPS62253467A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J29/00Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
    • B41J29/377Cooling or ventilating arrangements

Landscapes

  • Accessory Devices And Overall Control Thereof (AREA)
  • Electronic Switches (AREA)

Abstract

PURPOSE:To make it possible to increase a cooling effect and to maintain the heat accumulating temperature of a thermal head to be constant, by providing a duct-constituting guide plate, a suction hole, an exhaust hole and a ventilating hole to constitute a ventilating duct for a heat sink for a thermal head. CONSTITUTION:A cooler for a thermal printer comprises a duct-constituting guide plate 7 provided at a fin part of a heat sink 2, a ventilating hole 41 cut out in an ink sheet holder 4, a suction hole 61 provided in a bottom surface of a frame 6, a filter 8, an exhaust hole 62 provided in the frame 6 on the lower side of an axial fan 3, and a suction/exhaust short-circuit preventive plate 63. The outside air flowing in from the exterior flows along the guide plate 7 provided on the ink sheet holder 4 as indicated by an arrow (e), and the heat sink 2 is effectively cooled by an airflow passing through fin groove parts as indicated by an arrow (f). In addition, the plate 63 cuts off a flow from the exhaust side to the suction side, thereby ensuring efficient cooling.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 この発明はサーマルプリンタに3けるサーマルヘッドに
蓄Mされた余分な熱を強制的Cことりのぞく冷却構造に
関するものである。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a cooling structure for forcibly removing excess heat accumulated in a thermal head of a thermal printer.

〔従来の技術〕[Conventional technology]

第2図は従来の丈−マルプリンタ装置のサーマルヘッド
近傍の構造を示す断面側面図であり1図において1口)
はサーマルヘッド、(2)はこのヘッド(1)にネジ止
めされたヒートシンク、(3)はヒートシンク(2)ヲ
冷却「るために設けられた軸流ファン、(4)は軸流フ
ァン(3)8取りつけCいるインクシートホルダ、(5
]はイックシート、(6)は上述の各部品を収納する枠
である。
Figure 2 is a cross-sectional side view showing the structure near the thermal head of a conventional long-print printer (one head in Figure 1).
is a thermal head, (2) is a heat sink screwed to this head (1), (3) is an axial fan installed to cool the heat sink (2), and (4) is an axial fan (3). ) 8 Installed ink sheet holder, (5
] is an easy sheet, and (6) is a frame for storing each of the above-mentioned parts.

次に動作について説明する。図示しないドライブ回路か
らの電源によって加熱されたサーマルヘッド(1)の熱
はイックシート(5)に伝熱され、インクを溶かし゛C
1図示しない印字機構によって印字がなされる。一般に
高速で安定した印字性能を得るために必要以上のエネル
ギーを丈−マルヘッド(1)に印加する傾向があるので
、余分な熱が丈−マルヘッド(1)に蓄熱され温度上昇
が生じる。次いで、印字をそのまま連続していくとサー
マルヘッド(1)の温度はインクの軟化温度50℃をも
こえて、印字性能を極端に悪くするので、ヘッド(1)
の下表面に取り付けられた図示しない温度検出器でヘッ
ド(1)の温度を検出し、40℃をこえると印字を停止
し、軸流ファン(3)を作動させで、矢印aのような空
気の流れを生じさせている。この流れを補う様にインク
シートホルダ(4)とインクシート(5)とのすきま力
)らインクシートホルダ(4)の内部へ矢印すのように
流入する。以上の気流は枠(6)の内部で循環流とナリ
、ヘッド(1)をヒートシンク(2)への伝熱を介シて
冷却される。
Next, the operation will be explained. The heat of the thermal head (1) heated by the power supply from the drive circuit (not shown) is transferred to the ink sheet (5) and melts the ink.
1. Printing is performed by a printing mechanism (not shown). In general, there is a tendency to apply more energy than necessary to the long-round head (1) to obtain stable printing performance at high speeds, so excess heat is stored in the long-round head (1), causing a rise in temperature. Next, if printing continues as is, the temperature of the thermal head (1) will exceed the softening temperature of the ink, 50°C, and the printing performance will be extremely poor.
A temperature sensor (not shown) attached to the bottom surface of the head (1) detects the temperature of the head (1), and when the temperature exceeds 40°C, printing is stopped and the axial fan (3) is activated to generate air as shown by arrow a. This causes a flow of To compensate for this flow, ink flows into the inside of the ink sheet holder (4) from the gap between the ink sheet holder (4) and the ink sheet (5) as shown by the arrow. The above air flow is circulated inside the frame (6), and the head (1) is cooled through heat transfer to the heat sink (2).

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

従来のサーマルプリンタの冷却装置は以上のように構成
されているので、ヘッドの蓄熱温度によってインクがべ
たつき、印字むらを生じ、必要な印字性能が得られず、
印字を停止して冷却することが必要であった。従って、
プリンタ装置の環境温gtによっては、十分な印字作業
をせずに停止するので、長い作業時間を必要とするなど
の問題点があった。
Since the cooling device of conventional thermal printers is configured as described above, the ink becomes sticky due to the heat storage temperature of the head, causing uneven printing, making it impossible to obtain the necessary printing performance.
It was necessary to stop printing and cool down. Therefore,
Depending on the environmental temperature gt of the printer device, the printer may stop without performing sufficient printing, resulting in a problem that a long working time is required.

この発明は上記のような問題点を解消するためになされ
たもので、連続印字、環境温度(最大40℃)lこ拘わ
らず、サーマルヘッドの蓄熱温度を実質的に一定するこ
とのできる冷却効果の大きいサーマルプリンタの冷却装
置を得ることを目的とする。
This invention was made to solve the above-mentioned problems, and has a cooling effect that can keep the heat storage temperature of the thermal head substantially constant regardless of continuous printing or environmental temperature (maximum 40°C). The purpose is to obtain a large thermal printer cooling system.

〔問題点を解決するための手段〕[Means for solving problems]

この発明に係る丈−マルプリンタの冷却装置は。 A cooling device for a length printer according to the present invention.

軸流ファンF部の枠に排気孔を設けるとともに同一面の
枠の正前側に吸気孔を設けて、ヒートシンクの放熱面を
冷却して流nる械Iこダクト構成ガイド板を用いて通風
路ダクトを構成し、ダクトの圧力損失を少なくできる様
にフィンを設けたものである。
An exhaust hole is provided in the frame of the axial fan F part, and an intake hole is provided in the front side of the frame on the same side to cool the heat dissipation surface of the heat sink. It forms a duct and is provided with fins to reduce pressure loss in the duct.

〔作用〕[Effect]

この発明における通風路ダクトは、比較的温度の低い枠
外の外気により直接的に冷却されるので冷却性能が向上
する。
The ventilation passage duct in this invention is directly cooled by the outside air outside the frame, which has a relatively low temperature, so that the cooling performance is improved.

〔実施例〕〔Example〕

以ト、この発明の一実施例を図について説明する。!@
1図CCオいて、(7)はヒートシンク(2)のフィン
部に効果的に冷却風を導くためのダクト構成ガイド板、
 (41)はこのダクト構成ガイド板(7)によって構
成された通風路ダクトの軸流ファン(3)の反対側のイ
ンクシートホルダ(4)に設けられた通風孔、(61)
は枠(6)の−F面の上記通気孔(41)に対応する位
置に設けられた吸気孔、(8)はこの吸気孔(61)の
上面に取り付けられたフィルター、(62)は軸流ファ
ン(3)の下面の枠(6)に設けられた排気孔、(63
)はこの排気孔(62)と吸気孔(61)がショートす
るのを防ぐために枠(6)に設けられた返排気ショート
防止板である。
Hereinafter, one embodiment of the present invention will be described with reference to the drawings. ! @
In Figure 1 CC, (7) is a duct configuration guide plate for effectively guiding cooling air to the fin portion of the heat sink (2),
(41) is a ventilation hole provided in the ink sheet holder (4) on the opposite side of the axial fan (3) of the ventilation path duct configured by this duct configuration guide plate (7);
(8) is the filter attached to the top surface of this intake hole (61), (62) is the shaft Exhaust hole (63) provided in the frame (6) on the bottom of the flow fan (3)
) is a return exhaust short-circuit prevention plate provided on the frame (6) to prevent short-circuiting between the exhaust hole (62) and the intake hole (61).

次に動作について説明する。従来と同fftfこサーマ
ルヘッド(1)の温度が上昇すると、これを検出して軸
流ファン(3)が作動し、排気孔(62)を通して矢印
Cの気流が生じる。この流れを補うように吸気74rA
1)g、通1.τ々(佃I’d涌賑7l−(al)不合
1.て生白dのように装置内に流入する。この流入した
外気はインクシートホルダ(4)に設けられたダクト構
成ガイド板(7)に沿って矢印eのように流れ、ヒート
シンク(2)はフィン溝部を通る矢印fの気流によって
効果的に冷却される。また、吸排気ショート防止板(6
3) fこよって、排気から吸気への流れをしゃ断して
いる。さらに、フィルター(8)ハ、矢印dの気流によ
ってごみが装置内へ流入するのを防いでいる。
Next, the operation will be explained. When the temperature of the thermal head (1) rises, this is detected and the axial fan (3) is activated, producing an airflow as indicated by arrow C through the exhaust hole (62). To compensate for this flow, the intake air is 74 rA.
1) g, through 1. τ (Tsukuda I'd Flowing 7l-(al) Mismatch 1.) and flows into the apparatus like fresh white d. This inflowing outside air flows through the duct configuration guide plate ( 7) as shown by the arrow e, and the heat sink (2) is effectively cooled by the airflow shown by the arrow f passing through the fin grooves.
3) f This blocks the flow from exhaust to intake. Furthermore, the filter (8) prevents dust from flowing into the device due to the airflow indicated by the arrow d.

〔発明の効果〕〔Effect of the invention〕

以上のように、この発明によればダクト構成ガイド板、
吸排気孔および通風孔を設けることにより、ヒートシン
クを外気で直接冷却するように通風路ダクトを構成した
ので、冷却効果が増大し、印字を停止せずにサーマルヘ
ッドの蓄熱温度を一定に保持できる効果がある。
As described above, according to the present invention, the duct configuration guide plate,
By providing intake and exhaust holes and ventilation holes, the ventilation path duct is configured to directly cool the heat sink with outside air, increasing the cooling effect and maintaining the heat storage temperature of the thermal head at a constant level without stopping printing. There is.

【図面の簡単な説明】[Brief explanation of drawings]

第1図はこの発明の一実施例によるサーマルプリンタの
冷却装置を示す断面側面図、第2図は従来の冷却装置を
示す断面側面図である。 図において、(1)はサーマルヘッド、(21はヒート
シンク、(3)は軸流ファン、(4)はインクシートホ
ルダ、(6)は枠体、(7)はダクト構成ガイド板、(
8)iまフィルター、(41)は通気孔、(61)は吸
気孔、(62) Gま排気孔である。 なお1図中同一符号は同一、または相当部分を示す。
FIG. 1 is a cross-sectional side view showing a cooling device for a thermal printer according to an embodiment of the present invention, and FIG. 2 is a cross-sectional side view showing a conventional cooling device. In the figure, (1) is a thermal head, (21 is a heat sink, (3) is an axial fan, (4) is an ink sheet holder, (6) is a frame, (7) is a duct configuration guide plate, (
8) Ima filter, (41) is the ventilation hole, (61) is the intake hole, and (62) G is the exhaust hole. Note that the same reference numerals in Figure 1 indicate the same or equivalent parts.

Claims (1)

【特許請求の範囲】[Claims] (1)閉鎖された枠体内にあつて上記枠体の底板に対向
する底板を有するインクシートホルダの内部に設けられ
放熱フィン形状のヒートシンクを有するサーマルヘッド
と、 上記枠体の底板に設けられ外気と上記枠体内とを連通す
る吸気孔及び排気孔と、 上記インクシートホルダの底板の上記吸気孔に対応する
位置に設けられ、じんあい流入防止用フィルターを通し
て上記吸気孔からの外気を上記インタシートホルダ内へ
導く通風孔と、 上記インクシートホルダの底板の上記排気孔に対応する
位置に設けられ上記インクシートホルダ内を上記排気孔
を介して排気する軸流ファンと、上記インクシートホル
ダの内部に上記通気孔から上記ヒートシンクの放熱フィ
ン周辺を経て上記軸流ファンに至る通風ダクトを形成す
るガイド板とを備えたサーマルプリンタの冷却装置。
(1) A thermal head having a heat sink in the shape of a heat dissipation fin, which is installed inside an ink sheet holder that is located in a closed frame and has a bottom plate that faces the bottom plate of the frame; and an air intake hole and an exhaust hole that communicate with the frame body, and a filter provided on the bottom plate of the ink sheet holder at a position corresponding to the air intake hole, and passing outside air from the air intake hole into the ink sheet through a filter for preventing dust from flowing into the ink sheet holder. a ventilation hole leading into the holder; an axial fan provided at a position corresponding to the exhaust hole on the bottom plate of the ink sheet holder to exhaust the inside of the ink sheet holder through the exhaust hole; and an inside of the ink sheet holder. and a guide plate forming a ventilation duct from the ventilation hole to the axial fan through the vicinity of the radiation fins of the heat sink.
JP61097719A 1986-04-25 1986-04-25 Cooler for thermal printer Pending JPS62253467A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61097719A JPS62253467A (en) 1986-04-25 1986-04-25 Cooler for thermal printer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61097719A JPS62253467A (en) 1986-04-25 1986-04-25 Cooler for thermal printer

Publications (1)

Publication Number Publication Date
JPS62253467A true JPS62253467A (en) 1987-11-05

Family

ID=14199701

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61097719A Pending JPS62253467A (en) 1986-04-25 1986-04-25 Cooler for thermal printer

Country Status (1)

Country Link
JP (1) JPS62253467A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5053792A (en) * 1989-08-03 1991-10-01 Mitsubishi Denki K.K. Device for cooling thermal head
JP2008080647A (en) * 2006-09-27 2008-04-10 Casio Comput Co Ltd Printer and ribbon cassette
WO2012140913A1 (en) * 2011-04-13 2012-10-18 サトーホールディングス株式会社 Thermal-transfer printer
CN107921798A (en) * 2015-06-15 2018-04-17 录象射流技术公司 Air filter for ink-jet printer
JP2019077109A (en) * 2017-10-25 2019-05-23 ブラザー工業株式会社 Printing equipment
CN110228303A (en) * 2018-03-06 2019-09-13 精工爱普生株式会社 Printing equipment

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5053792A (en) * 1989-08-03 1991-10-01 Mitsubishi Denki K.K. Device for cooling thermal head
JP2008080647A (en) * 2006-09-27 2008-04-10 Casio Comput Co Ltd Printer and ribbon cassette
WO2012140913A1 (en) * 2011-04-13 2012-10-18 サトーホールディングス株式会社 Thermal-transfer printer
JP2012218384A (en) * 2011-04-13 2012-11-12 Sato Knowledge & Intellectual Property Institute Thermal transfer printer
CN107921798A (en) * 2015-06-15 2018-04-17 录象射流技术公司 Air filter for ink-jet printer
CN107921798B (en) * 2015-06-15 2020-11-17 录象射流技术公司 Device for continuous ink jet printing and filter unit for continuous ink jet printer
JP2019077109A (en) * 2017-10-25 2019-05-23 ブラザー工業株式会社 Printing equipment
CN110228303A (en) * 2018-03-06 2019-09-13 精工爱普生株式会社 Printing equipment
CN110228303B (en) * 2018-03-06 2023-02-28 精工爱普生株式会社 Printing device

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