JPS5856858A - Recording head - Google Patents
Recording headInfo
- Publication number
- JPS5856858A JPS5856858A JP15594281A JP15594281A JPS5856858A JP S5856858 A JPS5856858 A JP S5856858A JP 15594281 A JP15594281 A JP 15594281A JP 15594281 A JP15594281 A JP 15594281A JP S5856858 A JPS5856858 A JP S5856858A
- Authority
- JP
- Japan
- Prior art keywords
- chuck
- lead
- recording head
- solenoid
- recording
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L13/00—Drawing instruments, or writing or drawing appliances or accessories not otherwise provided for
- B43L13/02—Draughting machines or drawing devices for keeping parallelism
- B43L13/022—Draughting machines or drawing devices for keeping parallelism automatic
- B43L13/024—Drawing heads therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43K—IMPLEMENTS FOR WRITING OR DRAWING
- B43K21/00—Propelling pencils
- B43K21/02—Writing-core feeding mechanisms
- B43K21/22—Writing-cores gripping means, e.g. chucks
Landscapes
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Dot-Matrix Printers And Others (AREA)
- Recording Measured Values (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、消耗性筆記用芯を用いて記録体表面に描画記
録を行なう記録ヘッドに関するものであセ、詳しくは消
耗性筆記用芯に一定の押付力を加える記録ヘッドに関す
るものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a recording head that performs drawing and recording on the surface of a recording medium using a consumable writing core, and more specifically, relates to a recording head that performs drawing and recording on the surface of a recording medium using a consumable writing core. It is related to the head.
Ｗ、１図は、このような記録ヘッドにおける従来の構成
例を示した図である。FIG. 1 is a diagram showing an example of a conventional configuration of such a recording head.
Ｈ１図において、１は消耗性筆記用芯、２は芯ホルダ、
３は芯押棒、３０は記録体である。消耗性籠記用芯１と
しては例えば鉛筆芯が用いられる。In the H1 diagram, 1 is a consumable writing lead, 2 is a lead holder,
3 is a tailstock, and 30 is a recording body. As the consumable basket writing lead 1, for example, a pencil lead is used.
鉛筆芯１は芯ホルダ２内にムーＡＩ方向に移動可能に挿
入されるとともに先端部２’に適度な嵌合により保持さ
れている。芯押棒５は消耗性筆記用芯１の一端を押圧す
るように芯ホルダ２内に挿入されている。芯ホルダ２お
よび芯押棒５は記録状態に応じて移動機構（図示せず）
によ＃）ａ−、ａ＋方向に移動させられる。記録体３０
としては例えば図面用紙である。The pencil lead 1 is inserted into the lead holder 2 so as to be movable in the Mu AI direction, and is held in the tip portion 2' by proper fitting. The core push rod 5 is inserted into the lead holder 2 so as to press one end of the consumable writing lead 1. The lead holder 2 and the tailstock 5 are moved by a moving mechanism (not shown) depending on the recording state.
#) It is moved in the a- and a+ directions. Recording body 30
An example of this is drawing paper.
このような構成の記録ヘッドにおいて、記録にあたって
は移動機構により芯ホルダ２をＡ１方向に移動させて記
録体３０の表面近傍の所定の位置まで降下させるととも
に、芯押棒３をＡ’力方向移動させて鉛筆芯１の端部に
当接させ、鉛筆芯１を記録体３０の表面に一定の力で押
付ける。一方、記録をしない場合には、移動機構により
芯押棒３を入方向に移動させて所定の位置まで上昇させ
るとともに、芯ホルダ２も所定の位置まで上昇させる。In the recording head having such a configuration, during recording, the moving mechanism moves the core holder 2 in the A1 direction and lowers it to a predetermined position near the surface of the recording medium 30, and at the same time moves the tailstock 3 in the A' force direction. the end of the pencil lead 1, and press the pencil lead 1 against the surface of the recording medium 30 with a constant force. On the other hand, when recording is not to be performed, the moving mechanism moves the tailstock 3 in the entry direction and raises it to a predetermined position, and also raises the lead holder 2 to a predetermined position.
このとき、鉛筆芯１は先端部２１に保持されているため
、鉛筆芯１も芯ホルダ２とともに上昇することＫなる。At this time, since the pencil lead 1 is held by the tip 21, the pencil lead 1 also rises together with the lead holder 2.
なお、芯押棒３は、端部が鉛筆芯１と接触しない位置ま
で上昇させておく。Note that the tailstock 3 is raised to a position where the end thereof does not come into contact with the pencil lead 1.
しかし、このような記録ヘッドでは鉛筆芯１が記録をし
ていくうちに短くなるため、長い芯押棒５で鉛筆芯１の
端部を押すことＫよって押付力を鉛筆芯１に加えていた
。このため、記録ヘッドの背が高くなり全体が大型化す
るという問題点があった０
また、芯押棒３が鉛筆芯１の端部を押すため、鉛筆芯１
の端部が欠けやすくなり、また鉛筆芯１が長い場合には
折れやすくなるという問題点があった０
本発明はこのような問題点を除去するためになされたも
ので、小型で、鉛筆芯が折れにくくシかも芯端部が欠け
ることがない記録ヘッドを提供することを目的としたも
のである。However, in such a recording head, the pencil lead 1 becomes shorter as recording is performed, so a pressing force is applied to the pencil lead 1 by pushing the end of the pencil lead 1 with a long core pusher 5. For this reason, there was a problem that the recording head became taller and the overall size became larger. In addition, since the core pusher 3 presses the end of the pencil lead 1, the pencil lead 1
There have been problems in that the edges of the pencil lead 1 are likely to chip, and if the pencil lead 1 is long, it is likely to break. The present invention was made to eliminate these problems, and is a compact, pencil lead 1. The object of the present invention is to provide a recording head which is not easily broken and does not have its core end chipped.
第２図は、本発明にかかる記録ヘッドの一実施例の構成
を示した図であシ、げ）は記録状態を示した図、（（ロ
）は記録をしない状態を示した図である。FIG. 2 is a diagram showing the configuration of an embodiment of the recording head according to the present invention, in which fig. .
第１図と同一のものは同一符号を付して再説明を省略す
る。以下、図において同様とする。Components that are the same as those in FIG. 1 are given the same reference numerals and redundant explanation will be omitted. The same applies to the figures below.
第２図（イ）および（ｃ４において、４は軸方向に鉛筆
芯１を挾み込んでいるチャックで、上部に凸部４Ｉ下部
に円すい部４“°を有する。５はチャック４の開閉を行
なうチャック開閉手段で例えばチャック４の軸方向に移
動可能に取付けられたカラーである。In Figures 2 (A) and (C4), 4 is a chuck that holds the pencil lead 1 in the axial direction, and has a convex part 4 at the top and a conical part 4" at the bottom. 5 is used to open and close the chuck 4. The chuck opening/closing means is, for example, a collar movably attached to the chuck 4 in the axial direction.
６はチャック４の凸部４Ｉとカラー５の関Ｋかけられた
コイルばねである。コイルばね６は、ばね力によりカラ
ー５をチャック４０円すい部４′１に押付ける。コイル
ばね６によりカラー５がチャック４の円すい部４” Ｋ
押付けられていないときは、チャック４は開き、鉛筆芯
１が解放されて軸方向に移動可能になり、カラー５がチ
ャック４の円すい部４”に押しつけられているときはチ
ャック４は閉じ、鉛筆芯１は締付は固定される。７は口
字形の検知レバーで、芯ホルダ２に近接して配置されチ
ャック４の位置を検知する。検知レバー７は腕７Ｉおよ
び７電１を有し、軸８１に中心にしてＢ−Ｂ ’方向に
回転する。９はねじりコイルばねで、一端が検知レバー
７に植設されたピン１０に取付けられ、他端は記録ヘッ
ドの固定部（図示せず）に植設されたピン１１に取付け
られている。ねじりコイルばね９は薦２図の（イ）に示
した状態ではピン１０が軸８とピン１１の中心を結ぶ線
よりも下側にあるため、検知レバー７がＢ１方向に回転
するようにばね力を加えている。Reference numeral 6 denotes a coil spring that is applied between the convex portion 4I of the chuck 4 and the collar 5. The coil spring 6 presses the collar 5 against the conical portion 4'1 of the chuck 40 by spring force. Due to the coil spring 6, the collar 5 is attached to the conical part 4" of the chuck 4.
When the collar 5 is not pressed, the chuck 4 is opened and the pencil lead 1 is released and can be moved in the axial direction, and when the collar 5 is pressed against the conical part 4'' of the chuck 4, the chuck 4 is closed and the pencil The lead 1 is tightened and fixed. 7 is a mouth-shaped detection lever, which is placed close to the lead holder 2 and detects the position of the chuck 4. The detection lever 7 has arms 7I and 7 electrics 1, It rotates in the direction B-B' around a shaft 81. Reference numeral 9 denotes a torsion coil spring, one end of which is attached to a pin 10 implanted in the detection lever 7, and the other end attached to a fixed part of the recording head (not shown). ).The torsion coil spring 9 is attached to the pin 11 implanted in the position shown in Figure 2 (A), where the pin 10 is below the line connecting the center of the shaft 8 and the pin 11. Therefore, a spring force is applied so that the detection lever 7 rotates in the B1 direction.
１３はチャック４を移動させるチャック移動機構である
。チャック移動機構１３において、１４はソレノイド、
１５は磁性体で構成されソレノイド１４の磁気力により
ｃ−ｃ ’方向に移動するプランジャである。13 is a chuck moving mechanism for moving the chuck 4. In the chuck moving mechanism 13, 14 is a solenoid;
A plunger 15 is made of a magnetic material and moves in the c-c' direction by the magnetic force of the solenoid 14.
１６はプランジャ１５の下端付近に植設されたピン１７
とソレノイド１４の間に取付けられたコイルばねである
。コイルはね１６はプランジャ１５にＣＩ方向のばね力
を加えている。１８は固定部に取付けられた軸１９ヲ中
心にしてＤ−Ｄ ’方向に回動するてこで、一方の腕２
０にはカラー５が取付けられ、他方の腕２１にはプラン
ジャ１５が近接している。２２はコイルばねで、一端は
芯ホルダ２に固定された腕２３に取付けられ、他端はて
こ１８の腕２０に取付けられている。16 is a pin 17 installed near the lower end of the plunger 15
This is a coil spring installed between the solenoid 14 and the solenoid 14. The coil spring 16 applies a spring force to the plunger 15 in the CI direction. Reference numeral 18 denotes a lever that rotates in the D-D' direction around a shaft 19 attached to a fixed part, and one arm 2
0 has a collar 5 attached to it, and the other arm 21 has a plunger 15 close to it. 22 is a coil spring, one end of which is attached to an arm 23 fixed to the core holder 2, and the other end of which is attached to an arm 20 of the lever 18.
コイルばね２２はてこ１ＢがＤ方向に回転するようにば
ね力を加えている。The coil spring 22 applies a spring force so that the lever 1B rotates in the D direction.
このような構成の記録ヘッドにおいて、鉛筆芯の下降は
次のようＫして行なわれる。In the recording head having such a configuration, the pencil lead is lowered as follows.
芯ホルダ２は、移動機構によＩＡ’方向に移動させられ
て記録体３０の表面近傍の所定の位置まで降下させられ
る。外部の回路（図示せず）によりソレノイド１４が励
磁されると、磁気力によりプランジャ１５はコイルばね
１６のばね力に抗してＣ方向に移動する。これによｐｌ
てこ１８はコイルばね２２のばね力でＤ方向に回転し、
カラー５はＡ’力方向移動する。これによって、カラー
５はチャック４の円すい部４＋＋を抑圧し、鉛筆芯１は
チャック４に締付は固定された状態で記録体３０に押圧
される。このとき、コイルばね２２のばね力により鉛筆
芯１は記録体３０に押付けられている。The core holder 2 is moved in the IA' direction by the moving mechanism and lowered to a predetermined position near the surface of the recording medium 30. When the solenoid 14 is excited by an external circuit (not shown), the plunger 15 moves in the C direction against the spring force of the coil spring 16 due to magnetic force. This is pl
The lever 18 rotates in the D direction by the spring force of the coil spring 22,
Collar 5 moves in the A' force direction. As a result, the collar 5 suppresses the conical portion 4++ of the chuck 4, and the pencil lead 1 is pressed against the recording medium 30 while being fastened to the chuck 4. At this time, the pencil lead 1 is pressed against the recording medium 30 by the spring force of the coil spring 22.
一方、記録をしない場合の鉛筆芯１の上昇は次のように
して行なわれる。On the other hand, when not recording, the pencil lead 1 is raised as follows.
ソレノイド１４は非励磁の状態になシ、プランジャ１５
はコイルばね１６のばね力によりＣＩ力方向移動する。Solenoid 14 is in a de-energized state, plunger 15
is moved in the CI force direction by the spring force of the coil spring 16.
これにより、てこ１８はコイルばね２２のばね力に抗し
てＤ１方向に回転する。これによって、カラー ｓ ハ
Ａ方向に移動し、鉛筆芯１を締付固定したチャック４を
Ａ方向に持上げる。As a result, the lever 18 rotates in the D1 direction against the spring force of the coil spring 22. As a result, the collar s moves in the A direction and lifts the chuck 4 with the pencil lead 1 tightened and fixed in the A direction.
記録により鉛！ｌ芯１が短くなったときのチャックのし
直しは次のようにして行なわれる。Lead by record! When the l core 1 becomes short, the chuck is re-chucked as follows.
記録により鉛筆芯１が短くなると、それに応じてチャッ
ク４はＡ’力方向降下する。鉛筆芯１が所定量以上減る
と、チャック４の円すい部４°゛は検知レバー７の腕７
マ１をけシＢ方向に回転させる。これにより、ピン１ｏ
が軸８とピン１１の中心を結ぶ線よりも上側とくるため
、ばね９は検知レバー７がＢ方向に回転するようにばね
カを加える。ここで、ソレノイド１４を非励磁の状態に
するとカラー５がＡ方向に持上げられ、チャック４は凸
部４Ｉが検知レバー７の腕７Ｉに当接した位置で止めら
れる。この状態においてもカラー５はＡ方向に持上げら
れるため、カラー５はチャック４の円すい部４■の接触
から離れチャック４は開く。これにょシ、鉛筆芯１は開
放されて自重でＡＩ力方向降下し、先端が芯ホルダ２の
先端部２−に保持されて止まる。この状態を第３図に示
す。ここで、ソレノイド１４を励磁すると、カラー５は
ＡＩ力方向降下してチャック４０円すい部４”に押しつ
けられてチャック４＃′ｉ閉じ、鉛筆芯１は締付は固定
された状態でＡＩ力方向降下し、鉛筆芯１の先端が記録
体３０に当接する。As the pencil lead 1 becomes shorter as a result of recording, the chuck 4 descends in the A' force direction accordingly. When the pencil lead 1 decreases by more than a predetermined amount, the conical portion 4° of the chuck 4 will move against the arm 7 of the detection lever 7.
Rotate M1 in the direction of Keishi B. This allows pin 1o
is located above the line connecting the centers of the shaft 8 and the pin 11, so the spring 9 applies a spring force so that the detection lever 7 rotates in the direction B. Here, when the solenoid 14 is de-energized, the collar 5 is lifted in the direction A, and the chuck 4 is stopped at a position where the protrusion 4I abuts the arm 7I of the detection lever 7. Even in this state, the collar 5 is lifted in the A direction, so the collar 5 is removed from contact with the conical portion 4 of the chuck 4, and the chuck 4 is opened. At this point, the pencil lead 1 is released and falls in the direction of the AI force due to its own weight, and its tip is held by the tip 2- of the lead holder 2 and stops. This state is shown in FIG. Here, when the solenoid 14 is energized, the collar 5 descends in the direction of the AI force and is pressed against the conical portion 4'' of the chuck 40, closing the chuck 4#'i, and the pencil lead 1 remains tightened in the direction of the AI force. It descends, and the tip of the pencil lead 1 comes into contact with the recording medium 30.
それにともなって、芯ホルダ２および検知レバー７も記
録体３００表面近傍の所定の位置まで降下する。このと
き、検知レバー７の腕７′電はピン１２に当たり、Ｂ曾
方向忙回転させられもとの位置にもどる。Along with this, the lead holder 2 and the detection lever 7 also descend to a predetermined position near the surface of the recording medium 300. At this time, the arm 7' of the detection lever 7 hits the pin 12 and is rotated in the B direction to return to its original position.
これＫよシ、鉛筆芯１のチャックのし直しが行なわれ、
記録ヘッドは記録できる状態になる。This is K, the zipper of pencil lead 1 is being re-zipped.
The recording head becomes ready for recording.
このような構成の記録ヘッドによれば、鉛筆芯１をチャ
ック４により締付固定した状態で記録体３０に押付けて
いるため、鉛筆芯１の端部を押す芯押棒を必要としない
。このため、鉛筆芯１の端部が欠けることがなく、また
芯ホルダ２の長さが短くなることから記録ヘッドの背を
低くし全体を小型化することができる。また、鉛筆芯１
は下端に近い位置がチャック４によシ締付固定されてい
るため、押付力に対して鉛筆芯１は折れにくいという特
徴がある・
なお、実施例では消耗性筆記用芯として鉛筆芯分用いた
場合について例示したが、消耗性筆記用芯としてはこれ
以外のもの例えばクレヨン、顔料博を用いてよい。According to the recording head having such a configuration, since the pencil lead 1 is pressed against the recording medium 30 in a state in which it is fastened and fixed by the chuck 4, there is no need for a core pusher to press the end of the pencil lead 1. Therefore, the end of the pencil lead 1 will not be chipped, and since the length of the lead holder 2 is shortened, the height of the recording head can be lowered and the overall size can be reduced. Also, pencil lead 1
Since the position near the lower end of the pencil lead 1 is tightened and fixed by the chuck 4, the pencil lead 1 has a characteristic that it is difficult to break due to the pressing force.In the example, the pencil lead 1 is used as a consumable writing lead. Although the above example is based on the case where the expendable writing lead was used, other consumable writing leads such as crayons and pigments may be used.
また馬実施例ではチャック移動機構としてソレノイドと
てこを用いた場合について例示したが、チャック移動機
構としてはこれ以外のもの例えばカム、クランク機構等
を用いてよい。Further, in the horse embodiment, a solenoid and a lever are used as the chuck moving mechanism, but other mechanisms such as a cam, a crank mechanism, etc. may be used as the chuck moving mechanism.
また、実施例ではチャック開閉手段として円筒形のカラ
ーを用いた場合について例示したが、チャック開閉手段
としてはこれ以外のものであってよい。Further, in the embodiment, a cylindrical collar is used as the chuck opening/closing means, but other types of chuck opening/closing means may be used.
以上説明上たように本発明によれば、小型で、鉛筆芯が
折れ【＜くしかも芯端部が欠けることがない記録ヘッド
を提供することができる。As described above, according to the present invention, it is possible to provide a recording head that is compact and does not cause the pencil lead to break or chip at the end of the lead.
航１因は消耗性筆記用芯を用いた記録ヘッドにおける従
来の構成例を示した図、ｌｌＮ２図は本発明にかかる記
録ヘッドの一実施例の構成を示した図であり、（イ）は
記録状態を示した図、（−は記録をしない状態を示した
図、第５図は第２図の記録ヘッドの鉛線芯が短くなった
ときのチャックのし直しをした状態を示した図である。
１・・・消耗性籠記用芯、２・・・芯ホルダ、４・・・
チャック、５・・・チャック開閉手段、７・・・検知レ
バー、１３・・・チャック移動機構、１４・・・ソレノ
イド、１５・・・プランジャ、１８・・・てこ、２０．
２１・・・腕、３０・・・記録体＠第１１ｆＪ
（イノ
（ｒ：ｌ）Figure 1 is a diagram showing an example of the conventional configuration of a recording head using a consumable writing lead, Figure 1N2 is a diagram showing the configuration of an embodiment of the recording head according to the present invention, and (A) is a diagram showing an example of the configuration of a recording head according to the present invention. A diagram showing the recording state, (- indicates a state in which no recording is performed, and Figure 5 shows a state in which the recording head in Figure 2 has been chucked again when the lead wire core has become short. 1... Consumable basket writing lead, 2... Lead holder, 4...
Chuck, 5... Chuck opening/closing means, 7... Detection lever, 13... Chuck moving mechanism, 14... Solenoid, 15... Plunger, 18... Lever, 20.
21... Arm, 30... Recording body @ 11th fJ (Ino (r:l)
Claims (1)
向に挿入されかつ保持された芯ホルダと、該芯ホルダ内
に軸方向に移動可能に挿入されるとともに前記消耗性筆
記用芯の下端付近を挾み込むチャックと、該チャックの
開閉を行なうチャック開閉手段と、前記チャックを移動
させるチャック移動機構と、前記芯ホルダに近接して配
置され前記チャックの位置を検知する検知レバーとを具
備し、記録にあたりては前記チャックを閉じた状態で前
記チャック移動機構によシ前記消耗性篭記用芯を移動し
て記録体に当接させるとともに、前記消耗性筆記用芯が
所定量だけ減ったときに前記チャックが検知レバーをけ
りチャック開閉手段がチャックを開き、消耗性筆記用芯
を開放してチャックし直すことを特徴とする記録ヘッド
勘 （２） 前記チャック移動機構に前記チャック開閉手
段が取付けられたことを特徴とする特許請求の範囲ｊｌ
Ｉ１項記載の記録ヘッド。 （５） 前記チャック移動機構として、ソレノイド、
該ソレノイドの磁気力により移動するプランジャおよび
一方の腕にチャック開閉手段が取付けられ他方の腕に前
記プランジャが近接して配置されたてζからなるものを
用いたことを特徴とする特許請求の範囲第１項記載の記
録ヘッド。[Scope of Claims] (1) A consumable writing lead, a lead holder into which the consumable writing lead is inserted and held in the axial direction, and a lead holder into which the lead holder is movably inserted in the axial direction. a chuck that holds the vicinity of the lower end of the consumable writing lead; a chuck opening/closing means for opening and closing the chuck; a chuck moving mechanism for moving the chuck; and a detection lever for detecting the position, and when recording, with the chuck closed, the chuck moving mechanism moves the consumable writing lead to bring it into contact with the recording medium, and at the same time Recording head sensor (2) characterized in that when the consumable writing lead decreases by a predetermined amount, the chuck kicks the detection lever, the chuck opening/closing means opens the chuck, releases the consumable writing lead, and chucks it again. Claim jl characterized in that the chuck opening/closing means is attached to the chuck moving mechanism.
The recording head according to item I1. (5) The chuck moving mechanism includes a solenoid,
Claims characterized in that the plunger is moved by the magnetic force of the solenoid, and a chuck opening/closing means is attached to one arm, and the plunger is arranged close to the other arm. The recording head according to item 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15594281A JPS5856858A (en) | 1981-09-30 | 1981-09-30 | Recording head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15594281A JPS5856858A (en) | 1981-09-30 | 1981-09-30 | Recording head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5856858A true JPS5856858A (en) | 1983-04-04 |
| JPH0125720B2 JPH0125720B2 (en) | 1989-05-18 |
Family
ID=15616884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15594281A Granted JPS5856858A (en) | 1981-09-30 | 1981-09-30 | Recording head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5856858A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60119596U (en) * | 1984-01-19 | 1985-08-13 | ぺんてる株式会社 | Drafting machine drawing head |
| EP0384590A2 (en) * | 1989-02-23 | 1990-08-29 | Hewlett-Packard Company | Mechanical plotter pencil and methods of advancing lead therein |
-
1981
- 1981-09-30 JP JP15594281A patent/JPS5856858A/en active Granted
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60119596U (en) * | 1984-01-19 | 1985-08-13 | ぺんてる株式会社 | Drafting machine drawing head |
| JPH0337995Y2 (en) * | 1984-01-19 | 1991-08-12 | ||
| EP0384590A2 (en) * | 1989-02-23 | 1990-08-29 | Hewlett-Packard Company | Mechanical plotter pencil and methods of advancing lead therein |
| EP0384590A3 (en) * | 1989-02-23 | 1992-07-01 | Hewlett-Packard Company | Mechanical plotter pencil and methods of advancing lead therein |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0125720B2 (en) | 1989-05-18 |
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