JPH0740628A - Thermal transfer printer - Google Patents
Thermal transfer printerInfo
- Publication number
- JPH0740628A JPH0740628A JP20823993A JP20823993A JPH0740628A JP H0740628 A JPH0740628 A JP H0740628A JP 20823993 A JP20823993 A JP 20823993A JP 20823993 A JP20823993 A JP 20823993A JP H0740628 A JPH0740628 A JP H0740628A
- Authority
- JP
- Japan
- Prior art keywords
- roll
- thermal transfer
- contact
- take
- transfer ribbon
- 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
Links
Landscapes
- Accessory Devices And Overall Control Thereof (AREA)
- Impression-Transfer Materials And Handling Thereof (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は熱転写リボンを使用した
熱転写プリンタに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thermal transfer printer using a thermal transfer ribbon.
【０００２】[0002]
【従来の技術】従来の熱転写プリンタでは、熱転写リボ
ンに帯電した静電気によって印字ヘッド（サーマルヘッ
ド）が破損したり、転写に不良がでることを防ぐ目的で
熱転写リボンの走行経路途上に除電用のブラシ、すなわ
ち除電ブラシを設けている。2. Description of the Related Art In a conventional thermal transfer printer, a brush for static elimination is provided on a running path of the thermal transfer ribbon in order to prevent damage to a print head (thermal head) due to static electricity charged on the thermal transfer ribbon or a defect in transfer. That is, a static elimination brush is provided.
【発明が解決しようとする課題】このように除電ブラシ
を熱転写リボンの走行経路途上、特にサーマルヘッドに
熱転写リボンが入る前の走行経路上に設けることによっ
て、サーマルヘッドの破損や、転写不良が生じることを
防ぐことが可能になった。しかし、最終的に熱転写リボ
ン巻取りロールに巻き取られた熱転写リボンのロールを
取り外したりする際に作業者が静電気の電撃を受けるこ
とがあった。この使用後の熱転写リボンの巻き取りロー
ルの取り外し作業の際の電撃は、サーマルヘッドを通過
後の熱転写リボンの走行経路上に除電ブラシを更に設け
ても防ぐことが困難であった。本発明は、以上の問題を
解決するためになされたもので、使用後の熱転写リボン
の巻取りロールの取り外し作業の際の作業者への電撃を
防ぐことを可能にする熱転写プリンタを提供することを
目的とする。As described above, by providing the static elimination brush on the running path of the thermal transfer ribbon, particularly on the running path before the thermal transfer ribbon enters the thermal head, damage to the thermal head or transfer failure occurs. It became possible to prevent that. However, when the roll of the thermal transfer ribbon wound on the thermal transfer ribbon take-up roll is finally removed, the worker may be hit by static electricity. It was difficult to prevent electric shock during the work of removing the take-up roll of the thermal transfer ribbon after use, even if a charge eliminating brush was further provided on the running path of the thermal transfer ribbon after passing through the thermal head. The present invention has been made to solve the above problems, and provides a thermal transfer printer capable of preventing an electric shock to an operator when removing a take-up roll of a thermal transfer ribbon after use. With the goal.
【０００３】[0003]
【課題を解決するための手段】印字ヘッドの下を通過し
たリボンを巻き取る巻取りロールに除電ブラシを接触さ
せるようにした。更には印字ヘッドの下へ送出するリボ
ンを巻いた送出しロールにも除電ブラシを接触させ、両
方の除電ブラシを中央で支承された天秤状の腕の両端に
保持させた。A static eliminating brush is brought into contact with a winding roll that winds up a ribbon that has passed under a print head. Further, the discharging roll, which is wound with a ribbon and is discharged below the print head, was also brought into contact with the discharging brushes, and both discharging brushes were held at both ends of a balance-like arm supported at the center.
【０００４】[0004]
【作用】熱転写リボンに印字ヘッド通過前に除電ブラシ
を接触させておいても、印字ヘッドの下を通過する際の
印字ヘッドとの摩擦で熱転写リボンは再び帯電する。熱
転写リボンはベースの片面に熱転写用のインクを塗布し
たもので、インクはカーボンを含んで或る程度の導電性
を持っているが、ベースは絶縁性であり、除電ブラシは
ベース側に接触させるようにしてある。除電ブラシが絶
縁性のベースに接触しているので、除電は完全には行わ
れず、残った電荷が巻取りロールに巻き込まれ、電荷が
蓄積して巻取りロールは次第に電位が上昇して行く。こ
のため巻取りロールを外すとき電撃を感じるのである
が、本発明では除電ブラシをこの高電位の巻取りロール
に接触させているので、ベースが介在していても、熱転
写リボンが展開されている部分におけるよりも電気が逃
げ易くなっており、除電効果が上がるのである。また送
出しロールと巻取りロールに接触させる除電ブラシを中
央で支承された天秤腕の両腕に保持させておくと、両ロ
ールの巻径が余り違わない範囲で、送出しロールの巻径
の減少と巻取りロールの巻径の増大とが略等しいので、
天秤に対する除電ブラシの弾性的な可変範囲を小さくし
ておいても、両ブラシを夫々のロールに接触させておく
ことができ、ロール巻径が変わっても除電ブラシの接触
圧が殆ど変わらない。Even if the static elimination brush is brought into contact with the thermal transfer ribbon before passing through the print head, the thermal transfer ribbon is charged again by friction with the print head when passing under the print head. The thermal transfer ribbon is a thermal transfer ink coated on one side of the base. The ink contains carbon and has a certain degree of conductivity, but the base is insulative and the static elimination brush is in contact with the base side. Is done. Since the static elimination brush is in contact with the insulating base, the static elimination is not completely performed, and the remaining electric charge is taken up by the winding roll, the electric charge is accumulated, and the electric potential of the winding roll gradually rises. For this reason, when the take-up roll is removed, an electric shock is felt, but in the present invention, since the static elimination brush is brought into contact with this high-potential take-up roll, the thermal transfer ribbon is expanded even if the base is interposed. It is easier for electricity to escape than in the area, and the effect of static elimination is improved. In addition, if the static elimination brushes that come into contact with the delivery roll and the take-up roll are held on both arms of the balance arm supported at the center, the roll diameter of the delivery roll will not change so much as the roll diameters of both rolls do not differ much. Since the decrease and the increase of the winding diameter of the winding roll are almost equal,
Even if the elastic variable range of the static elimination brush with respect to the balance is reduced, both brushes can be kept in contact with the respective rolls, and the contact pressure of the static elimination brush hardly changes even if the roll winding diameter changes.
【０００５】[0005]
【実施例】図１，図２に本発明の一実施例を示す。１は
用紙ロールでフィードローラ２によって用紙が引き出さ
れ、用紙は左方へ送られる。３は印字ヘッドで、４はプ
ラテンローラで用紙はこの両者の間を通過する際印字さ
れる。５は熱転写リボンの送出しロールで軸棒６に支承
されている。７が熱転写リボンで、８が巻取りロールで
ある。巻取りロール８は巻き取り軸９に保持させてあ
る。１０は巻取りロール８に接触させた除電ブラシ、１
１は送出しロールに接触させた除電ブラシである。１２
は除電ブラシ１０，１１を保持させた天秤腕で中央で枢
支されて、揺動可能である。天秤腕１２の支点１３は上
下位置が調節可能にしてある。FIG. 1 and FIG. 2 show an embodiment of the present invention. A sheet roll 1 is pulled out by a feed roller 2 and is fed to the left. 3 is a print head, 4 is a platen roller, and the paper is printed when passing between the both. Reference numeral 5 is a transfer roll of a thermal transfer ribbon, which is supported on a shaft rod 6. 7 is a thermal transfer ribbon, and 8 is a winding roll. The winding roll 8 is held by a winding shaft 9. 10 is a static elimination brush which is brought into contact with the winding roll 8;
Reference numeral 1 is a static elimination brush which is brought into contact with the delivery roll. 12
Is swingable by being pivotally supported at the center by a balance arm that holds the static elimination brushes 10 and 11. The vertical position of the fulcrum 13 of the balance arm 12 is adjustable.
【０００６】図１は新しい熱転写リボンのロールを送出
しロール側の軸棒６に取付け、リボンの先端を巻取りロ
ール側の巻芯に巻き付けた状態を示している。この状態
で除電ブラシ１０，１１が夫々相手のロール表面に接触
するように腕１２の支点の高さを調節する。その後印字
を行っていくと、送出しロール５の巻径は次第に小さく
なり巻取りロール８の巻径は次第に大きくなってくるの
で、当初図で左が下がっていた天秤腕１２は段々水平に
近くなり、更に熱転写ロールが消費されて行くと、腕１
２は右下がりに傾いてくるが、送出しロールと巻取りロ
ールの径の変化は互いに略相殺し合うので、熱転写リボ
ンの使用の始めから終わりまで、除電ブラシ１０，１１
の夫々のロールに対する接触圧は常時略一定に保たれ
る。FIG. 1 shows a state in which a roll of new thermal transfer ribbon is fed out, attached to a shaft 6 on the roll side, and the tip of the ribbon is wound around a winding core on the winding roll side. In this state, the height of the fulcrum of the arm 12 is adjusted so that the static elimination brushes 10 and 11 come into contact with the surfaces of the rolls of the other party. When printing is performed thereafter, the winding diameter of the delivery roll 5 is gradually reduced and the winding diameter of the winding roll 8 is gradually increased. Therefore, the balance arm 12 whose left side in the figure is lowered gradually becomes horizontal. When the thermal transfer roll is consumed, the arm 1
2 is inclined downward to the right, but the changes in the diameters of the feeding roll and the winding roll cancel each other out. Therefore, from the beginning to the end of use of the thermal transfer ribbon, the charge removal brushes 10, 11 are removed.
The contact pressure of each of the rolls is always kept substantially constant.
【０００７】今送出しロールの最大巻径即ち新しい熱転
写リボンのロール径をＲｏとし、使用途中の送出しロー
ル径をＲ、巻取りロール径をｒとすると、両ロールの側
面のリボン部分の面積の和は新しい熱転写リボンのロー
ルの側面のリボン部分の面積に等しいので、ｒとＲとの
間には ｒ2 ＋Ｒ2 ＝Ｒｏ2 の関係が成り立っている。熱転写ロールは巻径０から巻
かれており、巻取りロールは巻径０から巻き取って行く
ものとする。除電ブラシの接触圧を一定に保つためには
天秤腕１２の支点高さをｒとＲの変化に応じて変える必
要があるが、この変化量は、ｒ＝０，Ｒ＝Ｒｏのときの
支点高さをＲｏ／２とすると、ｒ＝Ｒｏ，Ｒ＝０のとき
もＲｏ／２となり、これらのとき支点高さは最下位にあ
り、ｒ＝Ｒ＝Ｒｏ／√２のとき最高位にある。従ってこ
の場合の支点の上下量は約０．２Ｒｏとなる。しかし熱
転写リボンは巻径０から巻かれているわけではなく半径
ｒｏの巻芯に巻かれており、半径ｒｏの巻芯に巻き取ら
れるので、支点に要求される上下移動量は上記より更に
小さくなり、ブラシの弾性で充分吸収できる程度であ
り、支点高さは予め調節して固定しておけばよいのであ
る。或は高さを調節する代りに、天秤腕のヘ字形の曲り
角を大小調節するようにしてもよい。When the maximum winding diameter of the delivery roll, that is, the roll diameter of the new thermal transfer ribbon is Ro, the delivery roll diameter in use is R, and the winding roll diameter is r, the area of the ribbon portion on the side surface of both rolls is R. Is equal to the area of the ribbon portion on the side of the roll of the new thermal transfer ribbon, the relationship r 2 + R 2 = Ro 2 is established between r and R. The thermal transfer roll is wound from a winding diameter of 0, and the winding roll is wound from a winding diameter of 0. In order to keep the contact pressure of the static elimination brush constant, it is necessary to change the fulcrum height of the balance arm 12 according to the changes of r and R, but this change amount is the fulcrum when r = 0 and R = Ro. If the height is Ro / 2, it becomes Ro / 2 even when r = Ro and R = 0. In these cases, the fulcrum height is at the lowest position, and when r = R = Ro / √2, it is at the highest position. . Therefore, the vertical amount of the fulcrum in this case is about 0.2Ro. However, the thermal transfer ribbon is not wound from a winding diameter of 0, but is wound around a winding core having a radius ro and is wound around a winding core having a radius ro, so the vertical movement amount required for the fulcrum is smaller than the above. Therefore, the elasticity of the brush is sufficient to absorb it, and the height of the fulcrum may be adjusted and fixed in advance. Alternatively, instead of adjusting the height, the helix angle of the balance arm may be adjusted to a larger or smaller value.
【０００８】なお図１で１４，１５は夫々熱転写リボン
供給側および巻取り側で熱転写リボンに接触させた除電
ブラシで、何れも熱転写リボンの一定した経路上で接触
させてあるので、上述したような揺動機構は不要であ
る。これらの除電ブラシは従来例において用いられてい
たものであり、本発明の場合原理上不要なものである
が、印字ヘッドに進入するリボンの除電をより一層完全
にするため、また印字ヘッド通過後のリボンの帯電を予
め或る程度除いて、除電ブラシ１０による除電を助ける
ために用いられているものである。また図３は除電ブラ
シを示し、細いワイヤ或はカーボン繊維糸Ｆを２枚の導
電テープＴの間に櫛状に並べて挟み、導電テープＴを互
いに接着したもので、テープ部分を保持体に接着し、ワ
イヤを除電すべきシートに接触させるようにしてある。In FIG. 1, reference numerals 14 and 15 denote static elimination brushes that are in contact with the thermal transfer ribbon on the thermal transfer ribbon supply side and the take-up side, respectively, and are in contact with each other on a fixed path of the thermal transfer ribbon. No rocking mechanism is required. These charge-eliminating brushes were used in the conventional example and are not necessary in principle in the case of the present invention, but in order to further complete the charge-eliminating of the ribbon entering the print head, and after passing through the print head. This is used to assist the neutralization by the neutralization brush 10 by removing the electrostatic charge of the ribbon to a certain extent in advance. FIG. 3 shows a static elimination brush, in which thin wires or carbon fiber threads F are arranged between two conductive tapes T in a comb shape and sandwiched, and the conductive tapes T are adhered to each other. Then, the wire is brought into contact with the sheet to be neutralized.
【０００９】図４，図５は本発明の他の実施例を示す。
図１，２の各部と対応する部分には同じ符号を付け、一
々の説明は省略する。この実施例の特徴は巻取りロール
８に接触させる除電ブラシ１０を揺動レバー１６の先端
に保持させ、巻取りロールの巻径の変化に追従してブラ
シ１０が上下するようにした点にある。１７は釣合い錘
でレバー１６の支点の反対側に取付けられ、ねじ１８に
より前後させてブラシ１０の巻取りロール８への接触圧
を調節できるようにしてある。この実施例では熱転写リ
ボンの印字ヘッドへの進入側における除電は従来例と同
様の場所に取付けられた除電ブラシ１４によって行って
いる。この進入側の除電ブラシも巻き取り側同様に揺動
レバーに保持させて、送出しロールに接触させるように
してもよい。4 and 5 show another embodiment of the present invention.
The parts corresponding to those in FIGS. 1 and 2 are designated by the same reference numerals, and the description thereof is omitted. The feature of this embodiment is that the static elimination brush 10 that is brought into contact with the take-up roll 8 is held at the tip of the rocking lever 16 so that the brush 10 moves up and down in accordance with the change in the winding diameter of the take-up roll. . Reference numeral 17 is a counterweight which is attached to the opposite side of the fulcrum of the lever 16 and can be moved back and forth by a screw 18 to adjust the contact pressure of the brush 10 to the take-up roll 8. In this embodiment, the charge removal on the entrance side of the thermal transfer ribbon to the print head is performed by the charge removal brush 14 attached at the same position as in the conventional example. The charge-eliminating brush on the entry side may be held by the swing lever and brought into contact with the delivery roll in the same manner as the take-up side.
【００１０】図６，７は更に他の実施例を示す。この実
施例は除電ブラシ１０を両端で上下方向にガイドされた
横棒１８に保持させ、横棒１８と除電ブラシ１０の自重
で巻取りロール８に接触するようにしたもので、１９が
横棒１８の上下方向のガイドである。この実施例でも熱
転写リボンの印字ヘッドへの進入側での除電は従来例同
様固定された除電ブラシ１４によって行っているが、こ
の実施例の巻取りロール用除電ブラシ同様、上下揺動可
能にして送出しロールに接触させるようにしてもよい。6 and 7 show still another embodiment. In this embodiment, the static elimination brush 10 is held by a horizontal bar 18 which is vertically guided at both ends, and the horizontal bar 18 and the static elimination brush 10 are brought into contact with the winding roll 8 by their own weight. 18 is a vertical guide. In this embodiment as well, the charge removal on the side where the thermal transfer ribbon enters the print head is performed by the fixed charge removal brush 14 as in the conventional example, but like the charge removal brush for the take-up roll of this embodiment, it can be vertically swung. You may make it contact a delivery roll.
【００１１】[0011]
【発明の効果】本発明によれば、従来除去が不充分で巻
取りロール取り外しの際、作業者が電撃を受けることが
あったものが巻取りロールに直接除電ブラシを接触させ
ることにより、巻取りロールの蓄積電荷をより効果的に
除去できるようになり、電撃を受けるおそれが解消され
た。According to the present invention, when the take-up roll is conventionally removed insufficiently and the operator is sometimes electrocuted, the wind-up roll is brought into direct contact with the anti-static brush to wind the roll. It became possible to more effectively remove the accumulated charge on the take-up roll, eliminating the risk of electric shock.
【図１】本発明の一実施例の側面図FIG. 1 is a side view of an embodiment of the present invention.
【図２】上記実施例の正面図FIG. 2 is a front view of the above embodiment.
【図３】除電ブラシの正面図FIG. 3 is a front view of the static elimination brush.
【図４】本発明の他の実施例の側面図FIG. 4 is a side view of another embodiment of the present invention.
【図５】上記実施例の正面図FIG. 5 is a front view of the above embodiment.
【図６】本発明の更に他の実施例の側面図FIG. 6 is a side view of still another embodiment of the present invention.
【図７】上記実施例の正面図FIG. 7 is a front view of the above embodiment.
１ 給紙ロール ２ フィードローラ ３ 印字ヘッド ４ プラテンローラ ５ 熱転写リボンの送出しロール ８ 熱転写リボンの巻取りロール １０，１１ 除電ブラシ １２ 天秤腕 １３ 支点 １４，１５ 除電ブラシ １６ 揺動レバー １７ 釣合い錘 １８ 横棒 １９ ガイド 1 Paper Feed Roll 2 Feed Roller 3 Print Head 4 Platen Roller 5 Heat Transfer Ribbon Delivery Roll 8 Heat Transfer Ribbon Winding Roll 10, 11 Static Elimination Brush 12 Balance Arm 13 Supports 14, 15 Static Elimination Brush 16 Swing Lever 17 Balance Weight 18 Horizontal bar 19 guide
Claims (3)
巻取りロールを備えた熱転写プリンタにおいて、前記熱
転写リボン巻取りロールの表面に接触する巻取りロール
用除電ブラシを具備したことを特徴とする熱転写プリン
タ。1. A thermal transfer printer comprising a thermal transfer ribbon delivery roll and a ribbon take-up roll, the thermal transfer printer comprising an electrifying brush for the take-up roll which is in contact with the surface of the thermal transfer ribbon take-up roll. .
ブラシを具備したことを特徴とする請求項１記載の熱転
写プリンタ。2. The thermal transfer printer according to claim 1, wherein the thermal transfer ribbon feeding roll is also provided with a charge eliminating brush.
り出しロール用除電ブラシが平衡した天秤状腕の両端に
それぞれ保持されたことを特徴とする請求項２記載の熱
転写プリンタ。3. The thermal transfer printer according to claim 2, wherein the anti-static brush for the winding roll and the anti-static brush for the delivery roll are respectively held at both ends of a balance-shaped arm in balance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20823993A JPH0740628A (en) | 1993-07-31 | 1993-07-31 | Thermal transfer printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20823993A JPH0740628A (en) | 1993-07-31 | 1993-07-31 | Thermal transfer printer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0740628A true JPH0740628A (en) | 1995-02-10 |
Family
ID=16552966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20823993A Pending JPH0740628A (en) | 1993-07-31 | 1993-07-31 | Thermal transfer printer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0740628A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6145561A (en) * | 1996-11-07 | 2000-11-14 | Seiko Epson Corporation And King Jim Co., Ltd. | Tape processing device with a coating device for the cutting blade and a static eliminator brush |
| WO2013112890A1 (en) * | 2012-01-28 | 2013-08-01 | Unipixel Displays, Inc. | Systems and method for making parallax filters using flexographic printing |
-
1993
- 1993-07-31 JP JP20823993A patent/JPH0740628A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6145561A (en) * | 1996-11-07 | 2000-11-14 | Seiko Epson Corporation And King Jim Co., Ltd. | Tape processing device with a coating device for the cutting blade and a static eliminator brush |
| WO2013112890A1 (en) * | 2012-01-28 | 2013-08-01 | Unipixel Displays, Inc. | Systems and method for making parallax filters using flexographic printing |
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