JPS60212373A - Automatic paper thickness adjusting mechanism for printer - Google Patents
Automatic paper thickness adjusting mechanism for printerInfo
- Publication number
- JPS60212373A JPS60212373A JP7059584A JP7059584A JPS60212373A JP S60212373 A JPS60212373 A JP S60212373A JP 7059584 A JP7059584 A JP 7059584A JP 7059584 A JP7059584 A JP 7059584A JP S60212373 A JPS60212373 A JP S60212373A
- Authority
- JP
- Japan
- Prior art keywords
- paper
- printing
- arrow
- platen
- stopper
- 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
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
- B41J25/308—Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface with print gap adjustment mechanisms
Landscapes
- Common Mechanisms (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は、印字装置のプラテンに装着された印字用紙の
紙厚調整をする印字装置の自動紙厚調整機構に関する。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to an automatic paper thickness adjustment mechanism for a printing device that adjusts the paper thickness of printing paper mounted on a platen of the printing device.
従来、この種の印字装置においては、プラテンに装着さ
れた印字用紙の印字面と、印字ヘッド先端との間隔が微
少であるため、印字用紙の厚さに応じて上記間隔を調整
する紙厚調整機構が設けられている。Conventionally, in this type of printing device, the distance between the printing surface of the printing paper attached to the platen and the tip of the print head is minute, so paper thickness adjustment is performed to adjust the above distance according to the thickness of the printing paper. A mechanism is provided.
しかしながら、このような従来の紙厚調整機構による紙
厚調整は、オペレータが行なうようになっておシ、試験
印字をしながら適正な間隔を見つけださなければならな
いため、オペレータの負担が大きく、シかも時間的な無
駄も大きく、更には操作ミスの原因ともなシ障害を発生
させる危険性がある等の問題点があった。However, paper thickness adjustment using such a conventional paper thickness adjustment mechanism is now performed by the operator, and the operator must find the appropriate spacing while performing test printing, which places a heavy burden on the operator. However, there are other problems such as a large amount of time wasted, and there is also a risk of operational errors causing operational errors.
〈発明の目的〉
本発明の目的は、プラテンに装着された印字用紙の厚さ
を自動的に検出し、印字用紙の印字面と印字ヘッド先端
との間隔を、あらかじめ定められた間隔に自動的に調整
できるようにして上記欠点番Ｉｔｈ４Ｉ＋ｍ生訪螢の由
髄鉦厘言１１鑵冬根批することにある。<Object of the Invention> The object of the present invention is to automatically detect the thickness of printing paper mounted on a platen, and automatically adjust the distance between the printing surface of the printing paper and the tip of the print head to a predetermined interval. The purpose of this is to be able to adjust the above fault number Ith4I+m to review the essence of the root of the fireflies.
〈発明の構成〉
本発明の印字装置の自動紙厚調整機構は、その構成をプ
ラテン当接用の印字ヘッドを固定したキャリッジの一端
を固定軸に対し回転及び軸線方向に移動可能に取付は且
つ他端を揺動用の回転軸に移動可能に取付けると共に、
上記回転軸の両端に偏心部材を取付け、一方の偏心部材
をスリップクラッチを介して駆動モータに連結し、更に
他方の偏心部材に過回転防止用の’２ ）ツバを設ける
ものとすることによシ、上記従来の問題点を解決してい
る。<Configuration of the Invention> The automatic paper thickness adjustment mechanism of the printing device of the present invention has a configuration in which one end of a carriage to which a print head for contacting a platen is fixed is mounted so as to be rotatable and movable in the axial direction with respect to a fixed shaft. The other end is movably attached to the rotating shaft for swinging, and
Eccentric members are attached to both ends of the rotating shaft, one eccentric member is connected to the drive motor via a slip clutch, and the other eccentric member is provided with a collar for preventing over-rotation. This solves the above conventional problems.
〈実施例〉
以下、本発明の一実施例を第１図及び第２図を参照して
説明する。キャリッジ１の一端は固定軸２に回転及び軸
線方向に移動自在な摺動材３を介して軸支されておシ、
他端は軸線方向に移動自在な摺動材４を介して回転軸５
によシ揺動可能に軸支されている。<Example> An example of the present invention will be described below with reference to FIGS. 1 and 2. One end of the carriage 1 is pivotally supported by a fixed shaft 2 via a sliding member 3 that is rotatable and movable in the axial direction.
The other end is connected to a rotating shaft 5 via a sliding member 4 that is movable in the axial direction.
It is pivotally supported so that it can swing.
回転軸５０両端に線側心部材６，７が固定され回転軸５
の回転によシ固定軸２を回転中心としてキャリッジ１は
揺動運動を行なう。The line side core members 6 and 7 are fixed to both ends of the rotating shaft 50.
Due to the rotation of the carriage 1, the carriage 1 performs a swinging motion about the fixed shaft 2 as the center of rotation.
そして、この回転軸５が矢印Ａ方向に回転した場合は、
キャリッジＩに固定した印字ヘッド８がプラテン９に装
着した印字用紙１０に当接し、回転軸５がＢ方向に回転
した場合は前記印字ヘッド８が印字用紙１０よシ離れる
ようになっている。When this rotating shaft 5 rotates in the direction of arrow A,
A print head 8 fixed to a carriage I comes into contact with a print paper 10 mounted on a platen 9, and when the rotating shaft 5 rotates in the direction B, the print head 8 moves away from the print paper 10.
また回転軸５は、矢印方向Ｂに回転した時、偏心部材７
に固定されたストッパ１１とシャフトストッパ１２によ
シ、矢印方向Ｂの過回転を防止しているようになってい
る。Furthermore, when the rotating shaft 5 rotates in the direction of the arrow B, the eccentric member 7
Over-rotation in the direction of the arrow B is prevented by a stopper 11 and a shaft stopper 12 fixed to the shaft.
更に、回転軸５に固定された偏心部材６には、平歯車１
３が固定され、この平歯車１３にはスリップクラッチ１
４を介して駆動モータ１５の駆動力を伝達する平歯車１
６が噛み合っている。Further, an eccentric member 6 fixed to the rotating shaft 5 includes a spur gear 1.
3 is fixed, and a slip clutch 1 is attached to this spur gear 13.
Spur gear 1 that transmits the driving force of drive motor 15 via 4
6 are engaged.
次に動作を説明する。Next, the operation will be explained.
第２図は印字ヘッド８がプラテン９に装着された印字用
紙１０の厚さを検出する前の状態、すなわち第１図にお
いてストッパ１１がシャフトストッパ１２に接触してい
る状態を示す。FIG. 2 shows a state before the print head 8 detects the thickness of the printing paper 10 mounted on the platen 9, that is, a state in which the stopper 11 is in contact with the shaft stopper 12 in FIG.
そして、印字開始直前に図示せぬ制御部からの信号が送
られると駆動モータ１５はＣ方向に一定量回転し、回転
軸５を入方向に回転させる。この回転軸５の回転によシ
用紙厚を検出する印字ヘッド８をプラテン９に装着され
た印字用紙１０に当接させる。この時駆動モータ１５は
、用紙厚を検出する印字ヘッド８が印字用紙１０に当接
しだ後４Ｃ方向に回転するが、スリップクラッチ１４の
スベリによシ駆動モータ１５の駆動力が伝達されず、用
紙厚が異っていても印字ヘッド８は印字用紙１０に当接
した位置で停止する。このため用紙厚の検出が可能とな
る。When a signal is sent from a control section (not shown) immediately before printing starts, the drive motor 15 rotates a certain amount in the C direction, thereby rotating the rotating shaft 5 in the input direction. As the rotary shaft 5 rotates, a print head 8 for detecting paper thickness is brought into contact with a print paper 10 mounted on a platen 9. At this time, the drive motor 15 rotates in the 4C direction after the print head 8 that detects the paper thickness begins to come into contact with the print paper 10, but due to the slippage of the slip clutch 14, the drive force of the drive motor 15 is not transmitted. Even if the paper thickness is different, the print head 8 stops at the position where it contacts the print paper 10. Therefore, the paper thickness can be detected.
次に、駆動モータ１５をＣ方向に印字用紙１０と印字へ
ラド８の間隔が一定となるように逆回転の量を決めれば
、・印字用紙１０の用紙厚に関係なく常に一定した間隔
を得ることができる。Next, by determining the amount of reverse rotation of the drive motor 15 in the C direction so that the distance between the printing paper 10 and the printing pad 8 is constant, a constant spacing can be obtained regardless of the paper thickness of the printing paper 10. be able to.
更に、印字終了後駆動モータ１５をＣ方向に一定量回転
させ、ストッパ１１をシャフトストッパ１２に当接させ
る。Furthermore, after printing is completed, the drive motor 15 is rotated by a certain amount in the C direction, and the stopper 11 is brought into contact with the shaft stopper 12.
この時駆動モータ１５は、ストッパ１１がシャフトスト
ッパ１２に当接した後もＣ方向に回転させるがスリップ
クラッチ１４のスベリによ）回転軸５の位置が一定位置
となシ第２図の初期状態に戻すことができる。At this time, the drive motor 15 continues to rotate in the C direction even after the stopper 11 contacts the shaft stopper 12, but due to the slippage of the slip clutch 14), the position of the rotating shaft 5 remains at a constant position (the initial state shown in FIG. 2). can be returned to.
〈発明の効果〉
本発明の印字装置の自動紙厚調整機構は、以上説明した
ように、プラテンに装着した印字用紙の用紙厚を検出し
印字面と印字ヘッド先端の間隔を自動的に調整すること
としたため、オペレータの操作を無くし時間的な無駄や
、操作ミスによる障害を防止することができ、しかもス
リップクラッチのすベシにて回転軸の位置を一定にする
ことができ、またストッパの存在によシ回転軸の過回転
をも防止できるという効果がある。<Effects of the Invention> As explained above, the automatic paper thickness adjustment mechanism of the printing device of the present invention detects the paper thickness of the printing paper mounted on the platen and automatically adjusts the distance between the printing surface and the tip of the print head. This makes it possible to eliminate operator operations, thereby preventing wasted time and failures due to operational errors.Furthermore, the position of the rotating shaft can be kept constant through the entire slip clutch, and the presence of a stopper also eliminates the need for operator operations. This also has the effect of preventing over-rotation of the rotating shaft.
第１図は、本発明の一実施例を示す斜視図、そして、第
２図は、本実施例の動作を示す側面図である。
１・・・キャリッジ ２・・・固定軸
５・・・回転軸 ６・・・偏心部材
８・・・印字ヘッド ９・・・プラテン１１・・・スト
ッパ １４・・・スリップクラッチ１５・・・駆動そ一
タ
出願人 日本電気株式会社
第１図
第２図FIG. 1 is a perspective view showing an embodiment of the present invention, and FIG. 2 is a side view showing the operation of this embodiment. 1... Carriage 2... Fixed shaft 5... Rotating shaft 6... Eccentric member 8... Print head 9... Platen 11... Stopper 14... Slip clutch 15... Drive Applicant: NEC Corporation Figure 1 Figure 2
Claims (1)
端を固定軸に対し回転及び軸線方向に移動可能に取付は
且つ他端を揺動用の回転軸に移動可能に取付けると共に
、上記回転軸の両端に偏心部材を取付け、一方の偏心部
材をスリップクラッチを介して駆動モータに連結し、更
に他方の偏心部材に過回転防止用のストッパを設けた印
字装置の自動紙厚調整機構。One end of the carriage, on which the print head for contacting the platen is fixed, is mounted so as to be rotatable and movable in the axial direction with respect to a fixed shaft, and the other end is movably mounted on a rotating shaft for swinging, and the carriage is mounted on both ends of the rotating shaft. An automatic paper thickness adjustment mechanism for a printing device in which an eccentric member is attached, one eccentric member is connected to a drive motor via a slip clutch, and the other eccentric member is provided with a stopper to prevent over-rotation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7059584A JPS60212373A (en) | 1984-04-09 | 1984-04-09 | Automatic paper thickness adjusting mechanism for printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7059584A JPS60212373A (en) | 1984-04-09 | 1984-04-09 | Automatic paper thickness adjusting mechanism for printer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60212373A true JPS60212373A (en) | 1985-10-24 |
Family
ID=13436068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7059584A Pending JPS60212373A (en) | 1984-04-09 | 1984-04-09 | Automatic paper thickness adjusting mechanism for printer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60212373A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4812059A (en) * | 1986-10-31 | 1989-03-14 | Kabushiki Kaisha Toshiba | Printer apparatus with automatic gap adjusting mechanism |
| US5156466A (en) * | 1989-10-18 | 1992-10-20 | Fujitsu Limited | Method and apparatus for adjusting the spacing between head and platen in an impact printer or the like |
| US5193918A (en) * | 1988-09-08 | 1993-03-16 | Mannesmann Aktiengesellschaft | Print-head positioning system having a paper sensor |
| US5474392A (en) * | 1987-03-24 | 1995-12-12 | Fujitsu Limited | Device for automatically detecting thickness of printing sheet in a printer |
-
1984
- 1984-04-09 JP JP7059584A patent/JPS60212373A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4812059A (en) * | 1986-10-31 | 1989-03-14 | Kabushiki Kaisha Toshiba | Printer apparatus with automatic gap adjusting mechanism |
| US5474392A (en) * | 1987-03-24 | 1995-12-12 | Fujitsu Limited | Device for automatically detecting thickness of printing sheet in a printer |
| US5193918A (en) * | 1988-09-08 | 1993-03-16 | Mannesmann Aktiengesellschaft | Print-head positioning system having a paper sensor |
| US5156466A (en) * | 1989-10-18 | 1992-10-20 | Fujitsu Limited | Method and apparatus for adjusting the spacing between head and platen in an impact printer or the like |
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