JPS62240564A - Thermal head pressing mechanism in thermal transfer printer - Google Patents

Thermal head pressing mechanism in thermal transfer printer

Info

Publication number
JPS62240564A
JPS62240564A JP8554186A JP8554186A JPS62240564A JP S62240564 A JPS62240564 A JP S62240564A JP 8554186 A JP8554186 A JP 8554186A JP 8554186 A JP8554186 A JP 8554186A JP S62240564 A JPS62240564 A JP S62240564A
Authority
JP
Japan
Prior art keywords
shaft
head
thermal head
thermal
cam
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
JP8554186A
Other languages
Japanese (ja)
Inventor
Atsuo Hasegawa
長谷川　厚夫
Kazuyuki Kobayashi
小林　和志
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.)
NEC Corp
NEC Engineering Ltd
Original Assignee
NEC Corp
NEC Engineering Ltd
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 NEC Corp, NEC Engineering Ltd filed Critical NEC Corp
Priority to JP8554186A priority Critical patent/JPS62240564A/en
Publication of JPS62240564A publication Critical patent/JPS62240564A/en
Pending legal-status Critical Current

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
    • B41J25/312—Bodily-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 prevent the generation of the skew or wrinkles of an ink ribbon and to obtain good printing even on papers different in a thickness or the like, by imparting bending to a head pressing spring corresponding to the thickness of recording paper to make the pressing force against a thermal head variable. CONSTITUTION:A shaft 13 taking reciprocating linear motion in cooperation with the link 12 rotationally driven around a shaft 11 by a drive source and the side surface cam 16 held by said shaft and imparting bending to a head pressing spring 15 and making the pressing force to a thermal head 14 variable are provided. The side surface cam 16 has a cam surface 16a different in a height formed to the side surface thereof and, if said side surface cam 16 is rotated around the shaft 13 to an A-direction (peripheral direction), the distance of the shaft 13 is changed in a B-direction (axial direction). The movement of said cam 16 is transmitted to the head pressing spring 15 through the shaft 13 and a head support 18 is pressed forwardly to apply the pressure corresponding to the thickness of recording paper to the thermal head 14.

Description

【発明の詳細な説明】 ［産業上の利用分野］ 本発明は感熱転写プリンタのサーマルヘッド加圧機構に
関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a thermal head pressing mechanism for a thermal transfer printer.

［従来の技術］ シリアル型の感熱転写プリンタにおいては、サーマルヘ
ッドをインクリボンと記録用紙を介してプラテンに圧接
し、このサーマルヘッドをプラテンに平行に移動させな
がら熱転写記録を行う。[Prior Art] In a serial type thermal transfer printer, a thermal head is pressed against a platen via an ink ribbon and recording paper, and thermal transfer recording is performed while the thermal head is moved parallel to the platen.

従来、この感熱転写プリンタのサーマルヘッド加圧機構
は、第３図に示す様に例えばソレノイドの駆動源ｌによ
り□軸２を支点として駆動されるリンク３と、それ・に
連動して往復直線運動を行いヘッド圧スプリング４を保
持するシャフト５とから成り、ヘッド圧スプリング４に
よりインクリボン６を間にしてプラテン７に対向するサ
ーマルヘッド８に対して押圧力を与えるようになってお
り、厚さ及び剛性の異なる記録用紙にも常に一定のヘッ
ド圧が加えられていた。Conventionally, as shown in FIG. 3, the thermal head pressurizing mechanism of this thermal transfer printer has a link 3 driven by a solenoid driving source 1, for example, with a □ shaft 2 as a fulcrum, and a reciprocating linear movement in conjunction with the link 3. The head pressure spring 4 applies a pressing force to the thermal head 8 facing the platen 7 with the ink ribbon 6 in between. A constant head pressure was always applied to recording sheets of different stiffness.

［解決すべき問題点］ 上述した従来のヘッド加圧機構はヘッド圧力を変更でき
るような構造となっていないので、記録用紙に対する圧
力が一定である。しかしながら、紙厚が厚く剛性の高い
用紙に良好な印字を行う為には高い圧力が必要であり、
その同じ圧力で紙厚の薄い用紙に印字すると、用紙やイ
ンクリボンが部分的に歪みを起こし、それによる圧力の
不均一さがインクリボンのスキューやしわ等を生じると
いう重大な欠点がある。[Problems to be Solved] The conventional head pressure mechanism described above does not have a structure in which the head pressure can be changed, so the pressure on the recording paper is constant. However, high pressure is required to print well on thick, highly rigid paper.
If the same pressure is used to print on thin paper, the paper and ink ribbon will be partially distorted, and the resulting uneven pressure will cause skew and wrinkles in the ink ribbon, which is a serious drawback.

［問題点の解決手段］ 上記従来の問題点を解決する本発明の感熱転写プリンタ
のサーマルヘッド加圧機構は、サーマルヘッドをインク
リボンと記録用紙を介してプラテンに圧接し、前記サー
マルヘッドを前記プラテンと平行に桁方向に移動しなが
ら、熱転写記録を行うシリアル型感熱転写プリンタにお
いて、駆動源と、この駆動源により回動駆動されるリン
ク部材と、このリンク部材に連動し往復直線運動をする
シャフトと、このシャフトに保持され、前記サーマルヘ
ッドに対して押圧力を与えるヘッド圧スプリングと、こ
のヘッド圧スプリングに前記記録用紙の厚さに応じたた
わみを与え、前記サーマルヘッドに対する押圧力を可変
させる押圧力可変機構とを有する構成である。[Means for Solving the Problems] The thermal head pressurizing mechanism of the thermal transfer printer of the present invention which solves the above-mentioned conventional problems presses the thermal head against the platen via an ink ribbon and recording paper, and presses the thermal head against the platen. In a serial type thermal transfer printer that performs thermal transfer recording while moving parallel to the platen in the digit direction, there is a drive source, a link member that is rotationally driven by the drive source, and a reciprocating linear motion that is linked to the link member. a shaft; a head pressure spring held by the shaft and applying a pressing force to the thermal head; and a head pressure spring that gives deflection in accordance with the thickness of the recording paper to vary the pressing force against the thermal head. This configuration includes a pressing force variable mechanism that allows

［実施例］ 次に、本発明について図面を参照して説明する。第１図
は本発明の一実施例に係る感熱転写プリンタのサーマル
ヘッド加圧機構を示すものである。[Example] Next, the present invention will be described with reference to the drawings. FIG. 1 shows a thermal head pressing mechanism of a thermal transfer printer according to an embodiment of the present invention.

このサーマルヘッド加圧機構は、例えばソレノイドから
なる駆動源（図示せず）とこの駆動源により軸１１を支
点として回動駆動されるリンク１２とこのリンク１２に
連動し往復直線運動をするシャフト１３と、このシャフ
ト１３に保持され、サーマルヘッド１４に対して押圧力
を与えるヘッド圧スプリング１５と、このヘッド圧スプ
リング１５にたわみを与え、サーマルヘッド１４に対す
る押圧力を可変させる側面カム１６により構成されてい
る。This thermal head pressurizing mechanism includes a drive source (not shown) consisting of, for example, a solenoid, a link 12 that is rotatably driven by the drive source with a shaft 11 as a fulcrum, and a shaft 13 that moves linearly back and forth in conjunction with the link 12. The head pressure spring 15 is held by the shaft 13 and applies a pressing force to the thermal head 14, and the side cam 16 gives deflection to the head pressure spring 15 and changes the pressing force to the thermal head 14. ing.

上記側面カム１６は第２図に展開して示すように側面に
高さの異なるカム面１６ａが形成されている。The side cam 16 has cam surfaces 16a of different heights formed on the side, as shown in an exploded view in FIG.

側面カム１６はシャフト１３とヘッド圧スプリング１５
との間に位置している。シャフト１３の側面カム１６と
の対向面には同じく高さの異なるカム面が形成されてい
る。すなわち、側面カム１６をシャツ）１３を中心にＡ
方向（周方向）に回転させることにより、側面カム１６
とシャフト１３とのカム面での高さの組合せの変化を利
用し、Ｂ方向（軸方向）に距離を変化させる様になって
いる。これにより記録用紙の厚さ及び剛性に応じてヘッ
ド圧スプリング１５のたわみ量を調節できるようになっ
ている。なお、１７はキャリ７カバーである。The side cam 16 is connected to the shaft 13 and the head pressure spring 15.
It is located between. Cam surfaces having different heights are formed on the surface of the shaft 13 facing the side cam 16. In other words, the side cam 16 is moved around A (shirt) 13
By rotating in the direction (circumferential direction), the side cam 16
The distance is changed in the B direction (axial direction) by utilizing changes in the combination of the heights of the shaft 13 and the cam surface on the cam surface. This allows the amount of deflection of the head pressure spring 15 to be adjusted depending on the thickness and rigidity of the recording paper. Note that 17 is a carrier 7 cover.

すなわち、上記サーマルヘッド加圧機構においては、先
ず印字すべき記録用紙の厚さく例えば厚・中・薄）及び
剛性に応じて側面カム１６を回電させヘッド圧スプリン
グ１５のたわみ量を調整する。その後、駆動源をオンさ
せると、リンク１２の他方の一片が駆動側とは反対方向
に運動し、その動きがシャフト１３を介して、ヘッド圧
スプリング１５に伝達され、このヘッド圧スプリング１
５によりヘッドサポート１８が前方に押し付けられるこ
とによりサーマルヘッド１４に記録用紙の厚さ等に応じ
た圧力が与えられる（Ｃの状態）。That is, in the thermal head pressure mechanism described above, first, the amount of deflection of the head pressure spring 15 is adjusted by energizing the side cam 16 according to the thickness (for example, thick, medium, thin) and rigidity of the recording paper to be printed. Thereafter, when the drive source is turned on, the other piece of the link 12 moves in the opposite direction to the drive side, and this movement is transmitted to the head pressure spring 15 via the shaft 13.
5 presses the head support 18 forward, thereby applying pressure to the thermal head 14 according to the thickness of the recording paper, etc. (state C).

［発明の効果］ 以り説明したように本発明は、サーマルヘッドへの押圧
力を可変可能とすることにより、インクリボンのスキュ
ー、シワ等の発生を防止し、紙厚等の異なる用紙にもそ
れぞれ良好な印字を得る事ができる効果がある。[Effects of the Invention] As explained above, the present invention prevents the occurrence of skew, wrinkles, etc. of the ink ribbon by making the pressing force on the thermal head variable, and can also be applied to sheets of different paper thickness. Each has the effect of obtaining good printing.

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

第１図は本発明の一実施例に係るサーマルヘッド加圧機
構を示す斜視図、第２図は同機構に用いられる側面カム
の展開図、第３図は従来のサーマルヘッド加圧機構を示
す斜視図である。 １２：リンク １３：シャフト １４：サーマルヘッド １５：ヘッド圧スプリング １６：側面カム １６ａ：カム面 １７：キャリアカバー １８：ヘッドサポートFig. 1 is a perspective view showing a thermal head pressurizing mechanism according to an embodiment of the present invention, Fig. 2 is an exploded view of a side cam used in the same mechanism, and Fig. 3 is a conventional thermal head pressurizing mechanism. FIG. 12: Link 13: Shaft 14: Thermal head 15: Head pressure spring 16: Side cam 16a: Cam surface 17: Carrier cover 18: Head support

Claims (1)

【特許請求の範囲】[Claims] サーマルヘッドをインクリボンと記録用紙を介してプラ
テンに圧接し、前記サーマルヘッドを前記プラテンと平
行に桁方向に移動しながら、熱転写記録を行うシリアル
型感熱転写プリンタにおいて、駆動源と、この駆動源に
より回動駆動されるリンク部材と、このリンク部材に連
動し往復直線運動をするシャフトと、このシャフトに保
持され、前記サーマルヘッドに対して押圧力を与えるヘ
ッド圧スプリングと、このヘッド圧スプリングに前記記
録用紙の厚さに応じたたわみを与え、前記サーマルヘッ
ドに対する押圧力を可変させる押圧力可変機構とを具備
したことを特徴とする感熱転写プリンタのサーマルヘッ
ド加圧機構。A serial type thermal transfer printer that presses a thermal head against a platen via an ink ribbon and recording paper, and performs thermal transfer recording while moving the thermal head parallel to the platen in a digit direction. a link member that is rotationally driven by a link member, a shaft that moves in a reciprocating linear motion in conjunction with this link member, a head pressure spring that is held by this shaft and applies a pressing force to the thermal head, and a head pressure spring that is A thermal head pressing mechanism for a thermal transfer printer, comprising: a variable pressing force mechanism that applies deflection according to the thickness of the recording paper and varies a pressing force against the thermal head.
JP8554186A 1986-04-14 1986-04-14 Thermal head pressing mechanism in thermal transfer printer Pending JPS62240564A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8554186A JPS62240564A (en) 1986-04-14 1986-04-14 Thermal head pressing mechanism in thermal transfer printer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8554186A JPS62240564A (en) 1986-04-14 1986-04-14 Thermal head pressing mechanism in thermal transfer printer

Publications (1)

Publication Number Publication Date
JPS62240564A true JPS62240564A (en) 1987-10-21

Family

ID=13861727

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8554186A Pending JPS62240564A (en) 1986-04-14 1986-04-14 Thermal head pressing mechanism in thermal transfer printer

Country Status (1)

Country Link
JP (1) JPS62240564A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6975341B2 (en) * 2004-02-11 2005-12-13 Eastman Kodak Company Preventing crease formation in donor web in dye transfer printer that can cause line artifact on print

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6975341B2 (en) * 2004-02-11 2005-12-13 Eastman Kodak Company Preventing crease formation in donor web in dye transfer printer that can cause line artifact on print

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