JPH03275375A - Printing head holding structure - Google Patents
Printing head holding structureInfo
- Publication number
- JPH03275375A JPH03275375A JP7554190A JP7554190A JPH03275375A JP H03275375 A JPH03275375 A JP H03275375A JP 7554190 A JP7554190 A JP 7554190A JP 7554190 A JP7554190 A JP 7554190A JP H03275375 A JPH03275375 A JP H03275375A
- Authority
- JP
- Japan
- Prior art keywords
- platen roller
- roll paper
- bracket member
- head
- print head
- 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
- 230000006835 compression Effects 0.000 claims abstract description 8
- 238000007906 compression Methods 0.000 claims abstract description 8
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 230000001681 protective effect Effects 0.000 description 6
- 238000005452 bending Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Landscapes
- Common Mechanisms (AREA)
- Electronic Switches (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明はファクシミリ装置等に使用して好適な印字ヘッ
ドの保持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 print head holding structure suitable for use in facsimile machines and the like.
［従来の技術］
電話網を利用して文書、画像情報等の送受信を行う一般
事務用のファクシミリ装置においては、相手装置からの
伝送信号を受信すると、装置内部にセットされたロール
紙を、ステッピングモータによって回転駆動されるプラ
テンローラで繰り出し、印字ヘッドで記録し、１画面の
記録が終了すると、カッターで切断して排出口から装置
外部に受信記録紙として排出するように構成されている
。[Prior Art] In a facsimile machine for general office use that uses a telephone network to send and receive documents, image information, etc., when a transmission signal is received from the other party's machine, the roll paper set inside the machine is The paper is fed out by a platen roller rotationally driven by a motor, recorded by a print head, and when one screen of recording is completed, is cut by a cutter and discharged from the discharge port to the outside of the apparatus as a received recording paper.
印字ヘッドは通常サーマルヘッドが使用され、保持構造
としては固定式と可動（フローティング）式の２種類が
ある。固定式は筐体にねし止めされるもので、−旦取り
付けると１ラテンローラに対する印字中心のずれおよび
ヘッドの傾きを調整できないと云う問題があった。これ
に対して可動式は筐体に対して印字ヘッドを浮かして取
付け、ばねによってプラテンローラに圧接している。A thermal head is usually used as the print head, and there are two types of holding structure: a fixed type and a movable (floating) type. The fixed type is screwed onto the housing, and once installed, there is a problem in that it is not possible to adjust the deviation of the print center relative to one Latin roller and the inclination of the head. On the other hand, in the movable type, the print head is mounted floating relative to the housing, and is pressed against the platen roller by a spring.
［発明が解決しようとする課題］
しかしながら、このような従来の可動式印字ヘッドの保
持構造にあっては、印字ヘッドを所定の位置に確実に位
置決めすることが難しく、またサーマルヘッドを全長に
互って均一な圧接力でプラチンローラに圧接することが
難しく、印字ずれを生じたり、印字品質が一定しないと
云う問題があった。[Problems to be Solved by the Invention] However, with such a conventional movable print head holding structure, it is difficult to reliably position the print head at a predetermined position, and it is difficult to reliably position the print head at a predetermined position. Therefore, it is difficult to apply pressure to the platinum roller with uniform pressure, which causes problems such as print misalignment and inconsistent print quality.
したがって、本発明は上記したような従来の問題点に鑑
みてなされたもので、その目的とするところは、簡単な
構成で可動型印字ヘッドを安定且つ確実に保持し、プラ
テンローラに確実に圧接することができ、印字を良好に
行い得るようにした印字ヘッドの保持構造を提供するこ
とにある。Therefore, the present invention has been made in view of the above-mentioned conventional problems, and its purpose is to stably and reliably hold a movable print head with a simple structure and securely press it against the platen roller. It is an object of the present invention to provide a print head holding structure that allows printing to be carried out satisfactorily.
［課題を解決するための手段］
本発明は上記目的を達成するため、ブラケット部材に取
り付けられたヘッド本体と、前記ブラケット部材を左右
方向に回動自在に軸支する自在継手と、装置本体側に設
けられ前記自在継手を前後方向に移動自在に且つ上下方
向に回動自在に支持する軸受部と、前記ブラケット部材
を付勢し前記ヘッド本体をロール紙を介してプラテンロ
ーラに圧接する圧縮コイルばねと、前記ブラケット部材
の両側部に設けられ前記プラテンローラの各軸端に係合
する係合部とで構成したものである。[Means for Solving the Problems] In order to achieve the above object, the present invention includes a head main body attached to a bracket member, a universal joint that pivotally supports the bracket member so as to be rotatable in the left-right direction, and a device main body side. a bearing section that is provided on and supports the universal joint so as to be movable in the front-back direction and rotatable in the up-down direction; and a compression coil that biases the bracket member and presses the head body against the platen roller via the roll paper. It is composed of a spring and engaging portions provided on both sides of the bracket member and engaging with each shaft end of the platen roller.
［作用］
本発明において、ブラケット部材は自在継手によって左
右方向に回動自在に保持されることによりプラテンロー
ラに圧接された時の左右方向の傾きを調整される。ブラ
ケット部材の係合部はプラテンローラの軸端に係合する
ことで、印字ヘッドの前後方向の位置決めを行う。自在
継手は軸受部によって前後方向に移動自在で且つ上下方
向に回動自在に軸支されることにより、印字ヘッドの前
後方向の取付誤差を吸収する。[Function] In the present invention, the bracket member is held rotatably in the left-right direction by a universal joint, so that the inclination in the left-right direction when pressed against the platen roller is adjusted. The engagement portion of the bracket member engages with the shaft end of the platen roller, thereby positioning the print head in the front-rear direction. The universal joint absorbs installation errors in the front and rear direction of the print head by being supported by the bearing portion so as to be movable in the front and rear directions and rotatable in the vertical direction.
［実施例］
以下、本発明を図面に示す実施例に基づいて詳細に説明
する。[Example] Hereinafter, the present invention will be described in detail based on an example shown in the drawings.
第１図は本発明に係る印字ヘッドの保持構造を備えたフ
ァクシミリ装置の受信部の断面図、第２図は印字ヘッド
とプラテンローラの分解斜視図、第３図は保護カバーの
一部破断斜視図である。Fig. 1 is a cross-sectional view of a receiving section of a facsimile machine equipped with a print head holding structure according to the present invention, Fig. 2 is an exploded perspective view of the print head and platen roller, and Fig. 3 is a partially cutaway perspective view of the protective cover. It is a diagram.
これらの図において、１はファクシミリ装置の筐体で、
この筐体１は上下に２分割形成され互いに開口面を嵌合
させて一体的に結合されるロアーケース２およびアッパ
ーケース３と、ロアーケース２の上面前半部中央の開口
部分を覆う開閉可能な受信部カバー４と、同じくロアー
ケース２の上面後半部中央の開口部分を覆う着脱可能な
送信部カバー（図示せず）等で構成されている。In these figures, 1 is the housing of the facsimile machine;
This housing 1 is formed into two parts, upper and lower, and has a lower case 2 and an upper case 3, which are integrally connected by fitting their openings together, and an opening in the center of the front half of the upper surface of the lower case 2, which can be opened and closed. It is comprised of a receiver cover 4, a removable transmitter cover (not shown), etc. that similarly covers the opening at the center of the rear half of the upper surface of the lower case 2.
筐体１の内部は前半部を受信部５、後半部を送信部６と
され、ロアーケース２の前面部２Ａには記録されたロー
ル紙７を排出するスリット状の排出口８が設けられ、ア
ッパーケース３の−ａｈ面にはハンドセット９が設置さ
れている。Inside the housing 1, the front half is used as a receiving section 5, and the second half is used as a transmitting section 6, and the front section 2A of the lower case 2 is provided with a slit-shaped discharge port 8 for discharging the recorded roll paper 7. A handset 9 is installed on the -ah side of the upper case 3.
前記受信部５には前記ロール紙７のロール紙本体７Ａを
収納するロール紙収納ケース１０が前記ロアーケース２
に一体に形成されている。ロール紙収納ケース１０と前
記排出口８との間には駆動モータ（図示せず）によって
第１図矢印Ａ方向に回転されロール紙７を排出口８に向
けて送り出すプラテンローラ１２と、ロール紙７を排出
口８に案内するガイド板１３と、ロール紙７を介して前
記プラテンローラ１２に斜め上方から圧接される印字ヘ
ッド１４と、印字ヘッド１４をロール紙７から保護する
保護カバー１５と、ロール紙７の有無を検出するロール
紙検出用センサ１６およびロール紙７をカットするカッ
ター１７等が配設されている。In the receiving section 5, a roll paper storage case 10 for storing the roll paper main body 7A of the roll paper 7 is connected to the lower case 2.
is integrally formed. Between the roll paper storage case 10 and the discharge port 8, there is a platen roller 12 which is rotated in the direction of arrow A in FIG. 1 by a drive motor (not shown) and feeds the roll paper 7 toward the discharge port 8, and a roll paper a guide plate 13 that guides the print head 7 to the discharge port 8; a print head 14 that is pressed against the platen roller 12 from diagonally above via the roll paper 7; and a protective cover 15 that protects the print head 14 from the roll paper 7. A roll paper detection sensor 16 that detects the presence or absence of the roll paper 7, a cutter 17 that cuts the roll paper 7, and the like are provided.
前記プラテンローラ１２の各軸端１２Ａ、１２Ｂは、前
記ロアーケース２の内底面に突設された左右一対の軸受
部１８Ａ、１８Ｂの上端面に形成された０字状溝１９に
それぞれ上方から挿入され回転自在に軸支されている。Each shaft end 12A, 12B of the platen roller 12 is inserted from above into a 0-shaped groove 19 formed on the upper end surface of a pair of left and right bearing portions 18A, 18B protruding from the inner bottom surface of the lower case 2. and is rotatably supported.
また、一方の軸端１２Ａには駆動モータからの回転伝達
を受ける平歯車２０か嵌合固定されている。Further, a spur gear 20 that receives rotation transmission from a drive motor is fitted and fixed to one shaft end 12A.
前記印字ヘッド１４は可動型ヘッドを形成するもので、
サーマルヘッドからなるヘッド本体２２と、先端部裏面
に前記ヘッド本体２２が取り付けられたブラケット部材
２３を備えている。ブラケット部材２３は基端部幅方向
中央が自在継手２４に荷下がりに傾斜する第１の軸２５
を介して左右方向に回動（揺動）自在に軸支されている
。また、ブラケット部材２３の先端部両側縁には下端面
に前記プラテンローラ１２の各軸端１２Ａ、１２Ｂが嵌
合するＵ字状溝２６を有する係合部２７がそれぞれ折り
曲げ形成によって一体に設けられている。一方、ブラケ
ット部材２３の上面には左右−対の移動規制用ビン２８
が突設されており、これらのビン２８は前記受信部カバ
ー４の裏面に取り付けられたヘッド取付板２９のストッ
パ３０によって上下方向に摺動自在に挿入されている。The print head 14 forms a movable head,
It includes a head main body 22 made of a thermal head, and a bracket member 23 to which the head main body 22 is attached to the back surface of the tip. The bracket member 23 has a first shaft 25 whose center in the width direction of the base end is inclined toward the universal joint 24.
It is pivotally supported so that it can freely rotate (swing) in the left and right direction. Further, on both side edges of the tip end of the bracket member 23, engaging portions 27 having U-shaped grooves 26 in which the respective shaft ends 12A and 12B of the platen roller 12 are fitted are integrally provided on the lower end surface by bending. ing. On the other hand, a pair of left and right movement regulating bins 28 are provided on the upper surface of the bracket member 23.
These bins 28 are slidably inserted in the vertical direction by a stopper 30 of a head mounting plate 29 attached to the back surface of the receiver cover 4.
前記ストッパ３０は前記ヘッド取付板２つに切り起こし
形成された板片からなり、前記ビン２８が挿入されるＵ
字状溝３１を有している。前記ビン２８の上端には前記
Ｕ字状溝３１からの抜けを防止する頭部２８Ａが一体に
設けられている。そして、ブラケット部材２３は、左右
一対の圧縮コイルばね３２によって下方に付勢されるこ
とにより、前記ヘッド本体２２を前記プラテンローラ１
２の上側周面に所定圧にて圧接している。圧縮コイルば
ね３２は前記移動規制用ビン２８と共に、前記プラテン
ローラ１２の軸線とヘッド本体２２の印字中心とを結ぶ
面内に位置するように配置され、上端が前記ヘッド取付
板２９に圧接係止されている。The stopper 30 is made of a plate piece cut and bent on the two head mounting plates, and is formed of a U plate into which the bottle 28 is inserted.
It has a character-shaped groove 31. A head 28A is integrally provided at the upper end of the bottle 28 to prevent it from coming off the U-shaped groove 31. The bracket member 23 is biased downward by a pair of left and right compression coil springs 32, thereby moving the head main body 22 toward the platen roller 1.
It is pressed against the upper circumferential surface of No. 2 at a predetermined pressure. The compression coil spring 32 is arranged together with the movement regulating pin 28 so as to be located within a plane connecting the axis of the platen roller 12 and the printing center of the head body 22, and its upper end is pressed into contact with the head mounting plate 29 and latched. has been done.
前記自在継手２４は、前記第１の軸２５と直交する水平
な第２の軸３５を有し、この第２の軸３５が前記受信部
カバー４の裏面に一体に突設された一対の軸受部３６の
長孔３７によって前記第１の軸２５の軸線方向に移動自
在に且つ回動自在に軸支されている。The universal joint 24 has a horizontal second shaft 35 that is perpendicular to the first shaft 25, and the second shaft 35 is connected to a pair of bearings integrally protruding from the back surface of the receiver cover 4. The first shaft 25 is movably and rotatably supported in the axial direction of the first shaft 25 by a long hole 37 of the portion 36 .
前記保護カバー１５はステンレス等の金属板の折り曲げ
加工によって第３図に示すような形状に形成されること
により、垂直なカバー本体１５Ａと、カバー本体１５Ａ
の上端に設けられ前記ヘッド取付板２９の下面に止めね
じ３９によって固定される複数個の取付部１５Ｂと、カ
バー本体１５Ａの下端よりプラテンローラ１２方向に略
直角に折り曲げられた折曲片１５Ｃと、折曲片１５Ｃの
先端に設けられたＶ字状折曲片１５Ｄとで構成されてい
る。カバー本体１５Ａは中央部に前記自在継手２４が挿
通される開口部４０を有して、第１図に示すように前記
ロール紙収納ケース１０内のロール紙本体７Ａの前方に
近接して位置している。The protective cover 15 is formed into a shape as shown in FIG. 3 by bending a metal plate such as stainless steel, so that it has a vertical cover body 15A and a cover body 15A.
A plurality of mounting portions 15B are provided at the upper end and fixed to the lower surface of the head mounting plate 29 by set screws 39, and a bent piece 15C is bent from the lower end of the cover body 15A at a substantially right angle in the direction of the platen roller 12. , and a V-shaped bent piece 15D provided at the tip of the bent piece 15C. The cover main body 15A has an opening 40 in the center through which the universal joint 24 is inserted, and is located close to the front of the roll paper main body 7A in the roll paper storage case 10, as shown in FIG. ing.
前記折曲片１５Ｃは前記ロール紙収納ケース１０の前面
壁４１の上面４ＬＡと平行に近接対向し、前記Ｖ字状折
曲片１５Ｄは前記前面壁４１と前記プラテンローラ１２
との間に位置している。折曲片１５Ｃ，Ｖ字状折曲片１
５Ｄと前記前面壁４１上面との隙間はロール紙７の搬送
通路を形成している。前記カバー本体１５Ａと折曲片１
５Ｃとの接合部は適宜な曲率を以て湾曲し、ロール紙７
の表面、すなわち記録面を扱きロール紙７のカール習性
を取り除く第１扱き部４４を形成している。The bent piece 15C is close to and parallel to the upper surface 4LA of the front wall 41 of the roll paper storage case 10, and the V-shaped bent piece 15D is arranged between the front wall 41 and the platen roller 12.
It is located between. Bending piece 15C, V-shaped bending piece 1
A gap between 5D and the upper surface of the front wall 41 forms a conveyance path for the roll paper 7. The cover body 15A and the bent piece 1
The joint with 5C is curved with an appropriate curvature, and the roll paper 7
A first handling section 44 is formed that handles the surface of the roll paper 7, that is, the recording surface, and removes the curling tendency of the roll paper 7.
同様に前記Ｖ字状折曲片１５Ｄの頂部もロール紙７の表
面を扱・く第２扱き部４５を形成している。Similarly, the top of the V-shaped bent piece 15D also forms a second handling portion 45 for handling the surface of the roll paper 7.
前記ロール紙検出用センサ１６は反射型フォトセンサか
らなり、前記前面壁４１の上面４１Ａに形成された挿通
孔４７内に挿入配置され、発光素子から出た光がロール
紙７に当たって反射し、その反射光を受光素子が受光す
ることでロール紙７を検出する。このセンサ１６に対応
して前記保護カバー１５の第１扱き部４４には、ロール
紙７が無い時、発光素子からの光が第１扱き部４４に当
たって反射するのを防止する反射防止部４８が設けられ
ている。反射防止部４８は前記第１扱き部４４に凹設さ
れた凹部４９内に固着された黒色シートで構成されてい
る。The roll paper detection sensor 16 is made of a reflective photosensor, and is inserted into an insertion hole 47 formed on the upper surface 41A of the front wall 41, and the light emitted from the light emitting element hits the roll paper 7 and is reflected. The roll paper 7 is detected by the light receiving element receiving the reflected light. Corresponding to this sensor 16, the first handling part 44 of the protective cover 15 has an anti-reflection part 48 that prevents light from the light emitting element from hitting the first handling part 44 and being reflected when there is no roll paper 7. It is provided. The antireflection part 48 is composed of a black sheet fixed in a recess 49 formed in the first handling part 44 .
このような構成からなるファクシミリ装置において、ロ
ール紙７は記録面を外側にして巻かれており、ロール紙
収納ケース１０内に上方から挿入配置され、その先端部
が前面壁４１およびプラテンローラ１２の上を通って排
出口８に導かれ、受信部カバー４を閉じると、ヘッド本
体２２がロール紙７を介してプラテンローラ１２に圧縮
コイルばね３２のばね力によって圧接され、第１および
第２扱き部４４．４５が前面壁４１の上面に近接対向し
てロール紙本体７Ａとプラテンローラ１２間のロール紙
７を押え込む。受信に伴いヘッド本体２２による印字が
閏始されると、プラテンローラ１２が回転してロール紙
７を送り出し、１画面の受信毎にカッター１７によりカ
ットして排出口８から排出する６０一ル紙７は、第１、
第２扱き部４４．４５によって押さえ込まれてカール方
向とは反対方向に折曲げられており、第１、第２扱き部
４４．４５を通過する際これらによって扱かれ、カール
習性を取り除かれる。In the facsimile machine having such a configuration, the roll paper 7 is wound with the recording surface facing outward, and is inserted into the roll paper storage case 10 from above, with its leading end touching the front wall 41 and the platen roller 12. When the receiver cover 4 is closed, the head main body 22 is pressed against the platen roller 12 via the roll paper 7 by the spring force of the compression coil spring 32, and the first and second handling The portions 44 and 45 closely face the upper surface of the front wall 41 and press down the roll paper 7 between the roll paper main body 7A and the platen roller 12. When the head main body 22 starts printing in response to reception, the platen roller 12 rotates to send out the roll paper 7, and each time one screen is received, the cutter 17 cuts the roll paper 7 and outputs it from the discharge port 8. 7 is the first,
It is held down by the second handling part 44.45 and bent in the opposite direction to the curling direction, and when passing through the first and second handling parts 44.45, it is handled by these and the curling habit is removed.
印字へラド１４は、ブラケット部材２３の係合部２７に
設けた０字状溝２６がプラテンローラ１２の各軸端１２
Ａ、１２Ｂと嵌合することで前後方向の移動を規制され
、これによって印字中心がプラテンローラ１２の周面に
的確に圧接される。The printing head 14 has a 0-shaped groove 26 provided in the engaging portion 27 of the bracket member 23 that is connected to each shaft end 12 of the platen roller 12.
By fitting with A and 12B, movement in the front-back direction is restricted, and thereby the printing center is accurately pressed against the circumferential surface of the platen roller 12.
また、ブラケット部材２３は自在継手２４に第１の軸２
５を介して左右方向に回動自在に取り付けられているの
で、プラテンローラ１２に圧接されると、左右方向の傾
きを調整され、ヘッド本体２２が全長に互って一定圧に
て圧接される。さらに、ブラケット部材２３は移動規制
用ビン２８とストッパ３０との係合によって左右方向の
移動を規制されているので、印字ずれを生じず、また下
方の移動を規制されているので、プラテンローラ１２に
過大な圧接力で圧接されることもない。したがって、プ
ラテンローラ１２の回転が円滑で、駆動モータに対する
負荷を軽減させることができる。The bracket member 23 also connects the first shaft 2 to the universal joint 24.
5, so that when it comes into pressure contact with the platen roller 12, the inclination in the left and right direction is adjusted, and the head main body 22 is brought into contact with each other at a constant pressure along its entire length. . Further, since the bracket member 23 is restricted from moving in the left-right direction by the engagement between the movement-restricting bin 28 and the stopper 30, no misalignment of print occurs, and since the bracket member 23 is restricted from moving downward, the platen roller 12 It will not be pressed with excessive pressure. Therefore, the platen roller 12 rotates smoothly, and the load on the drive motor can be reduced.
また、自在継手２４は前後方向に移動自在に取り付けら
れているので、印字ヘッド１４の前後方向の取付誤差を
吸収し、印字中心をプラテンローラ１２の周面に正確に
圧接することができる。Moreover, since the universal joint 24 is attached so as to be movable in the front-rear direction, it is possible to absorb mounting errors in the front-rear direction of the print head 14 and accurately press the center of printing onto the circumferential surface of the platen roller 12.
「発明の効果］
以上述べたように本発明に係る印字ヘッドの保持構造に
よれば、ヘッド本体をプラテンローラの周面に対して全
長に亙って均一な圧接力で圧接でき、また可動型にも拘
らずヘッド本体の前後左右方向の位置決めを確実に行う
ことができ、印字性能を向上させることができる。[Effects of the Invention] As described above, according to the print head holding structure according to the present invention, the head main body can be pressed against the circumferential surface of the platen roller with uniform pressing force over the entire length, and the movable Nevertheless, the head main body can be reliably positioned in the front, rear, left and right directions, and printing performance can be improved.
第１図は本発明に係る印字ヘッドの保持構造を備えたフ
ァクシミリ装置の受信部の断面図、第２図は印字ヘッド
とプラテンローラの分解斜視図、第３図は保護カバーの
一部破断斜視図である。
１・・・筐体、２・・・ロアーケース、３・・・アッパ
ーケース、４・・・受信部カバー５・・・受信部、７・
・・ロール紙、７Ａ・・・ロール紙本体、８・・・排出
口、１０・・・ロール紙収納ケース、１２・・・プラテ
ンローラ、１４・・・印字ヘッド、１５・・・保護カバ
ー１６・・・ロール紙検出用センサ、１７・−・カッタ
ー、２２・・・ヘッド本体、２３・−・ブラケット部材
、２４・・−自在継手、２７・・・係合部、２８・・・
移動規制用ビン、３０・・・ストッパ、３２・・・圧縮
コイルばね、３６・・・軸受部。Fig. 1 is a cross-sectional view of a receiving section of a facsimile machine equipped with a print head holding structure according to the present invention, Fig. 2 is an exploded perspective view of the print head and platen roller, and Fig. 3 is a partially cutaway perspective view of the protective cover. It is a diagram. DESCRIPTION OF SYMBOLS 1... Housing, 2... Lower case, 3... Upper case, 4... Receiving part cover 5... Receiving part, 7...
... Roll paper, 7A... Roll paper body, 8... Outlet, 10... Roll paper storage case, 12... Platen roller, 14... Print head, 15... Protective cover 16 ... Roll paper detection sensor, 17... Cutter, 22... Head main body, 23... Bracket member, 24... Universal joint, 27... Engaging portion, 28...
Movement regulating bottle, 30...Stopper, 32...Compression coil spring, 36...Bearing portion.
Claims (1)
ラケット部材を左右方向に回動自在に軸支する自在継手
と、装置本体側に設けられ前記自在継手を前後方向に移
動自在に且つ上下方向に回動自在に支持する軸受部と、
前記ブラケット部材を付勢し前記ヘッド本体をロール紙
を介してプラテンローラに圧接する圧縮コイルばねと、
前記ブラケット部材の両側部に設けられ前記プラテンロ
ーラの各軸端に係合する係合部とを備えたことを特徴と
する印字ヘッドの保持構造。A head body attached to a bracket member, a universal joint that pivotally supports the bracket member so as to be rotatable in the left-right direction, and a universal joint provided on the apparatus main body side so that the universal joint can be freely moved in the front-rear direction and rotated in the up-down direction. A bearing part that supports freely,
a compression coil spring that urges the bracket member and presses the head body against the platen roller via the roll paper;
A print head holding structure comprising: engaging portions provided on both sides of the bracket member and engaging with each shaft end of the platen roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2075541A JP2562709B2 (en) | 1990-03-27 | 1990-03-27 | Print head holding structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2075541A JP2562709B2 (en) | 1990-03-27 | 1990-03-27 | Print head holding structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03275375A true JPH03275375A (en) | 1991-12-06 |
| JP2562709B2 JP2562709B2 (en) | 1996-12-11 |
Family
ID=13579168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2075541A Expired - Fee Related JP2562709B2 (en) | 1990-03-27 | 1990-03-27 | Print head holding structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2562709B2 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996014213A1 (en) * | 1994-11-08 | 1996-05-17 | Seiko Instruments Inc. | Printer |
| US6361231B1 (en) | 1999-03-25 | 2002-03-26 | Seiko Epson Corporation | Printer having a medium transportation path open/close mechanism |
| US6789969B2 (en) | 2001-06-25 | 2004-09-14 | Seiko Epson Corporation | Printer |
| JP2010052278A (en) * | 2008-08-28 | 2010-03-11 | Seiko Instruments Inc | Thermal printer |
| JP2011161815A (en) * | 2010-02-10 | 2011-08-25 | Citizen Holdings Co Ltd | Thermal printer |
| JP2015047741A (en) * | 2013-08-30 | 2015-03-16 | セイコーエプソン株式会社 | Print head and printer |
| JP2019177517A (en) * | 2018-03-30 | 2019-10-17 | ブラザー工業株式会社 | Printer |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5630880A (en) * | 1979-08-24 | 1981-03-28 | Hitachi Ltd | Positioning mechanism for heat-sensitive recorder |
| JPS5750357U (en) * | 1980-09-04 | 1982-03-23 | ||
| JPS6089375A (en) * | 1983-10-21 | 1985-05-20 | Ricoh Co Ltd | Pressing method of thermal head in thermal transfer recording system |
| JPS63194730U (en) * | 1987-06-05 | 1988-12-15 |
-
1990
- 1990-03-27 JP JP2075541A patent/JP2562709B2/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5630880A (en) * | 1979-08-24 | 1981-03-28 | Hitachi Ltd | Positioning mechanism for heat-sensitive recorder |
| JPS5750357U (en) * | 1980-09-04 | 1982-03-23 | ||
| JPS6089375A (en) * | 1983-10-21 | 1985-05-20 | Ricoh Co Ltd | Pressing method of thermal head in thermal transfer recording system |
| JPS63194730U (en) * | 1987-06-05 | 1988-12-15 |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996014213A1 (en) * | 1994-11-08 | 1996-05-17 | Seiko Instruments Inc. | Printer |
| US6361231B1 (en) | 1999-03-25 | 2002-03-26 | Seiko Epson Corporation | Printer having a medium transportation path open/close mechanism |
| US6789969B2 (en) | 2001-06-25 | 2004-09-14 | Seiko Epson Corporation | Printer |
| JP2010052278A (en) * | 2008-08-28 | 2010-03-11 | Seiko Instruments Inc | Thermal printer |
| JP2011161815A (en) * | 2010-02-10 | 2011-08-25 | Citizen Holdings Co Ltd | Thermal printer |
| JP2015047741A (en) * | 2013-08-30 | 2015-03-16 | セイコーエプソン株式会社 | Print head and printer |
| JP2019177517A (en) * | 2018-03-30 | 2019-10-17 | ブラザー工業株式会社 | Printer |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2562709B2 (en) | 1996-12-11 |
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