JPS63251252A - Thermal transfer printer - Google Patents

Thermal transfer printer

Info

Publication number
JPS63251252A
JPS63251252A JP8633187A JP8633187A JPS63251252A JP S63251252 A JPS63251252 A JP S63251252A JP 8633187 A JP8633187 A JP 8633187A JP 8633187 A JP8633187 A JP 8633187A JP S63251252 A JPS63251252 A JP S63251252A
Authority
JP
Japan
Prior art keywords
head
pressing force
spring
lever
force
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
JP8633187A
Other languages
Japanese (ja)
Inventor
Kazuhisa Kawakami
和久 川上
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.)
Seiko Epson Corp
Original Assignee
Seiko Epson 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 Seiko Epson Corp filed Critical Seiko Epson Corp
Priority to JP8633187A priority Critical patent/JPS63251252A/en
Publication of JPS63251252A publication Critical patent/JPS63251252A/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
    • B41J25/00Actions or mechanisms not otherwise provided for
    • B41J25/304Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface
    • B41J25/312Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface with print pressure adjustment mechanisms, e.g. pressure-on-the paper mechanisms

Landscapes

  • Common Mechanisms (AREA)
  • Electronic Switches (AREA)

Abstract

PURPOSE:To enable printing quality to be stabilized, by a method wherein spring force of a spring component between the spring component and a head support lever or a direction of the spring force is changed by operation of a head pressure lever, and pressing force of a printer head is changed. CONSTITUTION:In the case where a head pressure lever 106 is positioned in a reverse C direction, spring force P due to deflection of a head pressing force variable spring 110 acts in a liner direction of connecting a rotational center C of a head support lever 103a to a hook part D point, and no rotary moment works on the support lever 103a. Therefore, pressing force to a platen 109 of a printer head 101 becomes only reference head pressing force. Then, when the pressure lever 106 is rotated in the C direction by operation of a motor, the direction of spring force P due to the deflection of the pressing force variable spring 110 is changed, rotary moment M acts on the support lever 103a, and the prossing force to the platen 109 of the head 101 is increased. Thus, though ink transfer characteristics are changed, printing quality can be stabilized.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は熱転写プリンタの、プリンタヘッドの押圧力切
換え構造に関する。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a structure for changing the pressing force of a printer head of a thermal transfer printer.

〔従来の技術〕[Conventional technology]

従来のプリンタヘッドにおいては、プリンタヘッドの押
圧力を切換えておらず、一定の押圧力でしかイ/りを転
写できなかった。
In conventional printer heads, the pressing force of the printer head is not changed, and images can only be transferred with a constant pressing force.

(発明が解決しようとする問題点〕 しかし、前述の従来技術では一定の押圧力でしかインク
を転写できない為、基準としたインク転写特性を11j
つ転写紙の場合に限って、最適な転写特性を得ることし
かできなく、転写紙の紙種により転写特性がバラついて
しまうという問題点をイrする。また、環境(温度等)
の差による転写特性差を補正することができないので、
転写特性がバラついてしまうという問題点も有する。そ
こで本発明はこのような問題点を解決するもので、その
1]的とするところは、転写紙の紙種間による転写特性
のバラツキを小さくして、転写紙のi!JR範囲を広く
するところにある。又、環境差による転写特性のバラツ
キを小さくして、常に安定した印画品質をtlつ熱転写
プリンタを提a1するところにある。
(Problems to be Solved by the Invention) However, in the prior art described above, ink can only be transferred with a constant pressing force, so the ink transfer characteristics used as a reference are 11j
Optimum transfer characteristics can only be obtained with one type of transfer paper, and this eliminates the problem that the transfer characteristics vary depending on the type of transfer paper. Also, the environment (temperature, etc.)
It is not possible to correct the difference in transfer characteristics due to the difference in
Another problem is that the transfer characteristics vary. Therefore, the present invention is intended to solve these problems, and the purpose of the present invention is to reduce the variation in transfer characteristics depending on the paper type of transfer paper, and to improve the i! The aim is to widen the range of JR. Another object of the present invention is to provide a thermal transfer printer that reduces variations in transfer characteristics due to environmental differences and always provides stable printing quality.

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

本発明の熱転写プリンタは、ヘッドユニットを支F!j
する二本のヘッド支持レバーとヘッドフレーム間のヘッ
ド押圧力用のばね部材に加えて、ヘフドレームに回転中
心を持つヘッド圧力レバートヘッド支t、+7レバー間
のヘッド押圧力可変用のばね部材と、ヘッド圧力レバー
を動作せしめる駆動手段を加えた構成になっていること
を特徴とする。
The thermal transfer printer of the present invention supports the head unit F! j
In addition to a spring member for the head pressing force between the two head support levers and the head frame, a spring member for varying the head pressing force between the head pressure lever head support t and the +7 lever having a rotation center on the head frame; It is characterized in that it has a configuration in which a driving means for operating the head pressure lever is added.

〔作用〕[Effect]

本発明の」二足の構成によれば、ヘッド圧力レバーを動
作させることにより、ヘッド圧力レバーとヘッド支持レ
バー間のヘッド押圧力可変用のばね部材のばね力あるい
はばね力の方向が変化し、それに伴いプリンタヘッドの
プラテンへの押圧力を変化させることができる。
According to the two-legged structure of the present invention, by operating the head pressure lever, the spring force or the direction of the spring force of the spring member for varying the head pressing force between the head pressure lever and the head support lever changes, Accordingly, the pressing force of the printer head against the platen can be changed.

〔実施例〕〔Example〕

第1図は、本発明の第一の実施例における概略斜視図で
あって、プリンタヘッド101の印刷要素部分の近傍に
A f’lll 102が取付けられている。
FIG. 1 is a schematic perspective view of a first embodiment of the present invention, in which an A f'llll 102 is attached near a printing element portion of a printer head 101. As shown in FIG.

A軸102の両端には左拳右独立にA軸102を支tl
iする二本のヘッド支持レバー103a優103bがあ
り、構成部品101〜103bはB軸104を介してヘ
ッドフレーム105に保持されている。更にヘッドフレ
ーム105にはヘッド圧力レバ−100がC軸107に
回動可能に取付けられている。ヘッドフレーム105と
ヘッド支持レバー103a拳103bの間にはヘッド圧
バネ108があり、B軸104を支点としてプリンタヘ
ッド101をプラテン109に押さえつけている。プラ
テン109は転写紙邦人時などにプリンタヘッド101
から離れるf/l 逍になっている。ヘッド圧力レバー
10Qのヘッド支持レバー103a・103bの中間位
置とヘッド支持レバー103a・103b間には、ヘッ
ド押圧力可変バネ110がある。ヘッドフレーム105
以外の系にけ熱転写プリンタの動作状通を支配し、モー
ター111により回転するメインカム112があり、メ
インカム112のカム形伏に合わせて動き、ヘッド圧力
レバー106に動きを伝達する為に回動する伝達レバー
113が、ともにメインフレーム114に取付けられて
いる。
At both ends of the A-axis 102, the left fist and the right support the A-axis 102 independently.
There are two head support levers 103a and 103b, and the components 101 to 103b are held on the head frame 105 via the B shaft 104. Furthermore, a head pressure lever 100 is rotatably attached to the head frame 105 on a C-shaft 107. A head pressure spring 108 is provided between the head frame 105 and the head support lever 103a and fist 103b, and presses the printer head 101 against the platen 109 using the B axis 104 as a fulcrum. The platen 109 is used as the printer head 101 when using transfer paper.
I'm leaving f/l. A variable head pressing force spring 110 is provided between the intermediate position of the head support levers 103a and 103b of the head pressure lever 10Q and between the head support levers 103a and 103b. head frame 105
In other systems, there is a main cam 112 which controls the operation status of the thermal transfer printer and is rotated by a motor 111, which moves according to the cam shape of the main cam 112 and rotates to transmit the movement to the head pressure lever 106. Both transmission levers 113 are attached to the main frame 114.

次に上記の機構の作用を第1図によって説明すると、ヘ
ッド圧バネ108により、常に基準色なるヘッド押圧力
がプラテンを押圧している。次に、モーター111が回
転しメインカム112が回転すると、カム形伏に従って
伝達レバー113が矢印へ方向に回動し、その動きがヘ
ッド圧力レバー106を介してヘッド押圧力可変バネ1
10に伝えられる。それに伴ないヘッド支持レバー10
3a1+103bを介してヘッド押圧力可変バネ110
のバネ力がプリンタヘプト101に伝わり、プラテン1
09へのヘッド押圧力が、ヘッド圧バネ108によるヘ
ッド押圧力を基準として、抑圧・カアップの方向に変化
する。
Next, the operation of the above mechanism will be explained with reference to FIG. 1. The head pressure spring 108 always applies the head pressure force of the reference color to the platen. Next, when the motor 111 rotates and the main cam 112 rotates, the transmission lever 113 rotates in the direction of the arrow according to the cam shape, and this movement is transmitted to the head pressure variable spring 1 through the head pressure lever 106.
10 will be informed. Along with this, the head support lever 10
Head pressing force variable spring 110 via 3a1+103b
The spring force is transmitted to the printer head 101, and the platen 1
The head pressing force on the head 09 changes in the direction of suppression/up on the basis of the head pressing force by the head pressure spring 108.

第1図により、本発明の第二の実施例を説明すると、第
一の実施例におけるヘッド押圧力可変バネ110・伝達
レバー113及びヘッド圧力レバー106を取り、メイ
ンカム112の動作によってプラテン100を保持する
プラテンフレーム115を矢印Bのように上下動させて
、ヘッド圧/< 4108の荷重を変化させ、プラテン
1o9へのヘッド押圧力を変化させる。
A second embodiment of the present invention will be described with reference to FIG. 1.The head pressure variable spring 110, transmission lever 113, and head pressure lever 106 in the first embodiment are removed, and the platen 100 is held by the operation of the main cam 112. The platen frame 115 is moved up and down in the direction of arrow B to change the head pressure/<4108 load, thereby changing the head pressing force on the platen 1o9.

第2図は、本□発明の第三の実施例における概略斜視図
であって、第一の実施例におけるヘッド押圧力可変バネ
110を腺ばねに変え、ヘッド押圧力可変バネ110の
両端をヘッド支t!iレバー1゜3a11103bのフ
ック部に取り付け、ヘッド押圧力可変バネ110の中央
部を、ヘッドフレーム105に回動可能に取付けられた
ヘッド圧力レバー106の腕においてたわませて支持す
る。ヘッド圧力レバー10Gには歯車部があり、この歯
車とかみ合う輪列の先にはモーター111が取付けられ
ており、モーター1110回転によりヘッド圧力レバー
106が回転する構造になっている。
FIG. 2 is a schematic perspective view of a third embodiment of the present invention, in which the variable head pressing force spring 110 in the first embodiment is replaced with a gland spring, and both ends of the variable head pressing force spring 110 are connected to the head. Support! It is attached to the hook portion of the i-lever 1°3a11103b, and the center portion of the head pressure variable spring 110 is flexed and supported by the arm of the head pressure lever 106 rotatably attached to the head frame 105. The head pressure lever 10G has a gear part, and a motor 111 is attached to the end of a gear train that meshes with the gear part, so that the head pressure lever 106 is rotated by the rotation of the motor 1110.

次に上記の機構の作用を第3図によって説明すると、ヘ
ッド圧バネ108により、常に基準となるヘッド押圧力
がプラテンを押圧している。ヘッド支持レバー103a
・103bの回転中心(0点)とフック部(D点)を結
んだ直線方向に、ヘッド押圧力可変バネ110のたわみ
によって生じたばね力!)が作用している。このときに
は、ヘッド支tljレバー103a・103bには回転
モーメントが作用しないので、プラテン109へのヘッ
ド押圧力はヘッド圧バネ108による基準ヘッド抑圧力
のみとなっている。次にモーターtxtを回転させるき
、輪列部を介してヘッド圧力レバー100が矢印C方向
に回転し、それに伴ないヘッド押圧力可変バネ110の
たわみによって生じたばね力1)の方向が変化する。こ
のとき、ヘッド支持レバー103a・103bには回転
モーメントMか作用し、プラテン100へのヘッドfl
ll 圧力は、押圧力アップの方向に変化する。
Next, the operation of the above mechanism will be explained with reference to FIG. 3. The head pressure spring 108 always presses the platen with a head pressure force that serves as a reference. Head support lever 103a
- Spring force generated by the deflection of the variable head pressing force spring 110 in the straight line connecting the rotation center (0 point) of 103b and the hook part (point D)! ) is in effect. At this time, since no rotational moment acts on the head supporting tlj levers 103a and 103b, the head pressing force against the platen 109 is only the reference head suppressing force by the head pressure spring 108. Next, when the motor txt is rotated, the head pressure lever 100 rotates in the direction of arrow C via the wheel train, and the direction of the spring force 1) generated by the deflection of the variable head pressing force spring 110 changes accordingly. At this time, a rotational moment M acts on the head support levers 103a and 103b, and the head fl toward the platen 100 is
ll The pressure changes in the direction of increasing the pressing force.

〔発明の効果〕〔Effect of the invention〕

以上述べたように本発明によれば、ヘッド押圧力を二種
類以上変化させることができるので、インク転写特性の
バラツキ要因(例えば、転写紙の凹凸の程度や環境温度
など)の変化によるインク転写特性変化をヘッド抑圧力
を変化させることで一定に保つことができ、印画品質が
安定するという効果を打する。
As described above, according to the present invention, it is possible to change the head pressing force in two or more types, so that ink transfer due to changes in factors that cause variations in ink transfer characteristics (for example, the degree of unevenness of the transfer paper, environmental temperature, etc.) Changes in characteristics can be kept constant by changing the head suppression force, resulting in stable print quality.

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

第1図は、本発明の熱転写プリンタの第一・第二の実施
例を示す概略斜視図。第2図は、第三の実施例を示す概
略斜視図。第3図は、第2図の概略側面図。 101・・・プリンタヘッド 102・・・A軸 103a・103b・・・ヘッド支持レバー104・・
・0軸 105・・・ヘッドフレーム 10G・・・ヘッド圧力レバー 107・・・C軸 108・・・ヘッド圧バネ 109・・・プラテン 110・・・ヘッド押圧力可変バネ 111・・・モーター 112・・・メインカム 113・・・伝達レバー 114・・・メインフレーム 115・・・プラテンフレーム 以  上 出願人 セイコーエプソン株式会社 代理人 弁理士 最 上  務 他1名第3図
FIG. 1 is a schematic perspective view showing first and second embodiments of a thermal transfer printer of the present invention. FIG. 2 is a schematic perspective view showing a third embodiment. FIG. 3 is a schematic side view of FIG. 2. 101... Printer head 102... A-axis 103a, 103b... Head support lever 104...
・0 axis 105...Head frame 10G...Head pressure lever 107...C axis 108...Head pressure spring 109...Platen 110...Head pressing force variable spring 111...Motor 112. ...Main cam 113...Transmission lever 114...Main frame 115...Platen frame and above Applicant Seiko Epson Co., Ltd. Representative Patent attorney Tsutomu Mogami and 1 other person Figure 3

Claims (2)

【特許請求の範囲】[Claims] (1)インクフィルムと記録紙をヘッドとプラテンの間
に挟圧し、前記インクフィルム上に塗布されたインクを
溶融あるいは昇華させ、ヘッドの押圧力により記録紙上
へ転写する熱転写プリンタにおいて、前記ヘッドのプラ
テンへの押圧力を少なくとも2種類以上変化させること
を特徴とする熱転写プリンタ。
(1) In a thermal transfer printer that presses an ink film and recording paper between a head and a platen, melts or sublimates the ink coated on the ink film, and transfers it onto the recording paper using the pressing force of the head. A thermal transfer printer characterized by changing the pressing force of at least two types.
(2)前記ヘッドを有するヘッドユニットと、前記ヘッ
ドユニットの印刷要素部分の近傍でプラテン軸方向の両
端を左・右独立に、かつ前記ヘッドユニットが回動可能
なように支持する二本のヘッド支持レバーと、 前記ヘッド支持レバーと前記ヘッドユニットを保持して
いるヘッドフレームと、 前記ヘッド支持レバーと前記ヘッドフレーム間のヘッド
押圧力用のばね部材と、 前記ヘッドフレームに回転中心を持つヘッド圧力レバー
と、 前記ヘッド圧力レバーと前記ヘッド支持レバー間のヘッ
ド押圧力可変用のばね部材と、 前記ヘッド圧力レバーを動作せしめる駆動手段とから構
成されることを特徴とする特許請求の範囲第1項記載の
熱転写プリンタ。
(2) A head unit having the head, and two heads that support the left and right ends independently of each other in the platen axis direction near the printing element portion of the head unit so that the head unit can rotate. a support lever; a head frame holding the head support lever and the head unit; a spring member for a head pressing force between the head support lever and the head frame; a head pressure having a rotation center in the head frame; Claim 1, comprising: a lever; a spring member for varying the head pressing force between the head pressure lever and the head support lever; and a drive means for operating the head pressure lever. Thermal transfer printer described.
JP8633187A 1987-04-08 1987-04-08 Thermal transfer printer Pending JPS63251252A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8633187A JPS63251252A (en) 1987-04-08 1987-04-08 Thermal transfer printer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8633187A JPS63251252A (en) 1987-04-08 1987-04-08 Thermal transfer printer

Publications (1)

Publication Number Publication Date
JPS63251252A true JPS63251252A (en) 1988-10-18

Family

ID=13883854

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8633187A Pending JPS63251252A (en) 1987-04-08 1987-04-08 Thermal transfer printer

Country Status (1)

Country Link
JP (1) JPS63251252A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0458461A2 (en) * 1990-05-25 1991-11-27 Hewlett-Packard Company Self-aligning thermal print head and paper loading mechanism
JP6009625B1 (en) * 2015-07-08 2016-10-19 株式会社デジアイズ Thermal printer

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0458461A2 (en) * 1990-05-25 1991-11-27 Hewlett-Packard Company Self-aligning thermal print head and paper loading mechanism
US5114251A (en) * 1990-05-25 1992-05-19 Hewlett-Packard Company Self-aligning thermal print head and paper loading mechanism
EP0458461B1 (en) * 1990-05-25 1995-03-15 Hewlett-Packard Company Self-aligning thermal print head and paper loading mechanism
USRE35026E (en) * 1990-05-25 1995-08-22 Hewlett-Packard Corporation Self-aligning thermal print head and paper loading mechanism
JP6009625B1 (en) * 2015-07-08 2016-10-19 株式会社デジアイズ Thermal printer

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