JPH01228876A - Automatic sheet thickness regulating mechanism for printer - Google Patents
Automatic sheet thickness regulating mechanism for printerInfo
- Publication number
- JPH01228876A JPH01228876A JP5673388A JP5673388A JPH01228876A JP H01228876 A JPH01228876 A JP H01228876A JP 5673388 A JP5673388 A JP 5673388A JP 5673388 A JP5673388 A JP 5673388A JP H01228876 A JPH01228876 A JP H01228876A
- Authority
- JP
- Japan
- Prior art keywords
- paper
- platen
- sheet
- roller
- thickness
- 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
- 230000001105 regulatory effect Effects 0.000 title 1
- 238000001514 detection method Methods 0.000 claims abstract description 4
- 238000006073 displacement reaction Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 1
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〕
本発明はプリンタの自動紙厚調整ａｍに関し、特にイン
パクトドツトプリンタにおいて印字する用紙の厚さに応
じてプラテンと印字ヘッドとのすきまを自動調整するプ
リンタ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 automatic paper thickness adjustment am for printers, and particularly for automatically adjusting the gap between a platen and a print head according to the thickness of paper to be printed on in an impact dot printer. This invention relates to an automatic paper thickness adjustment mechanism for printers.
従来、この種の自動用紙厚調整機構は、用紙を印字位置
にセットしたのち、印字ヘッドを用紙に押しつけて印字
ヘッドが停止する位置を検出することにより、用紙厚を
測定し、その後に印字ヘッドを再度位置決めしていた。Conventionally, this type of automatic paper thickness adjustment mechanism measures the paper thickness by setting the paper at the printing position, pressing the print head against the paper and detecting the position where the print head stops. was being repositioned.
上述した従来の自動紙厚調整機構は、印字ヘッドが用紙
厚検出部を兼ねているので、用紙厚検出のためのシーケ
ンスと印字ヘッ°ド位置調整のためのシーケンスとが必
要であり、調整時間が長くなるという欠点があり、また
印字ヘッドが用紙を押しつけることによって機構部又は
用紙にダメージを与える恐れがあるという欠点がある。In the conventional automatic paper thickness adjustment mechanism described above, the print head also serves as the paper thickness detection section, so a sequence for detecting the paper thickness and a sequence for adjusting the print head position are required, which reduces the adjustment time. There is a drawback that the length of the paper is long, and there is also a drawback that the printing head presses against the paper, which may cause damage to the mechanical part or the paper.
本発明のプリンタの自動紙厚調整機構は、印字する用紙
がセットされるプラテンと、前記用紙を前記プラテンに
押しつける紙押さえローラと、前記用紙の厚さに応じて
前記プラテンとの最適なすきまを保って位置決めされる
印字ヘッドとを有してなり、前記紙押さえローラ及び前
記印字ヘッドの前記プラテンの半径方向への動きを連動
して行わしむる連動駆動機構と、前記紙押さえローラが
前記用紙に接したことを検出し且つ前記プラテンに対す
る前記印字ヘッドの最適な位置決めが行われる時点にお
いて前記連動駆動機構を停止させる検出機構とを備えて
いる。The automatic paper thickness adjustment mechanism of the printer of the present invention adjusts the optimum gap between a platen on which paper to be printed is set, a paper pressing roller that presses the paper against the platen, and the platen according to the thickness of the paper. an interlocking drive mechanism that moves the paper press roller and the print head in a radial direction of the platen in conjunction with each other; and a detection mechanism that detects contact with the print head and stops the interlocking drive mechanism at a time when the print head is optimally positioned with respect to the platen.
次に、本発明について図面を参照して説明する。 Next, the present invention will be explained with reference to the drawings.
第１図は本発明の一実施例の構成を示す側面図である。FIG. 1 is a side view showing the configuration of an embodiment of the present invention.
キャリッジ１は搭載した印字ヘッド２がプラテン３の半
径方向に可動するよう、モータ４により回転するカム５
に接するスライダ６に接続している。一方、紙押さえロ
ーラ７はプラテン３の半径方向に可動するよう、ばね８
に引かれたアーム９により支持され、かつアーム９はカ
ム５に接するスライダ１０により支持される。なおりム
５は、紙押さえローラ７がプラテン３の近傍にあるとき
は、スライダ６とスライダ１０とが等しい変位量をもつ
ような形状となっている。The carriage 1 has a cam 5 rotated by a motor 4 so that the print head 2 mounted thereon can move in the radial direction of the platen 3.
The slider 6 is connected to the slider 6, which is in contact with the slider 6. On the other hand, the paper pressing roller 7 is supported by a spring 8 so as to be movable in the radial direction of the platen 3.
The arm 9 is supported by an arm 9 that is pulled by the cam 5, and the arm 9 is supported by a slider 10 that is in contact with the cam 5. The guide rim 5 is shaped so that the slider 6 and the slider 10 have the same amount of displacement when the paper pressing roller 7 is near the platen 3.
このような構成の本実施例において、用紙１１がプラテ
ン３にセットされると、カム５はモータ４により反時計
方向に回転し、それに伴って紙押さえローラ７とキャリ
ッジ１はそれぞれプラテン３の半径方向内向きに移動す
る。紙押さえローラ７が用紙１１に接触すると、アーム
９は停止するが、スライダ１０はカム５の回転によりな
おも移動するため、アームつとスライダ１０とに支持さ
れたレバー１２が変位する。レバー１２に接しているマ
イクロスイッチ１３がその変位を検出することにより、
モータ４が回転を停止するため、カム５が停止してキャ
リ′ツジ１の動作も停止する。In this embodiment with such a configuration, when the paper 11 is set on the platen 3, the cam 5 is rotated counterclockwise by the motor 4, and the paper pressing roller 7 and the carriage 1 are accordingly moved to the radius of the platen 3. move inward. When the paper pressing roller 7 comes into contact with the paper 11, the arm 9 stops, but the slider 10 still moves due to the rotation of the cam 5, so the lever 12 supported by the arm and the slider 10 is displaced. When the microswitch 13 in contact with the lever 12 detects its displacement,
Since the motor 4 stops rotating, the cam 5 stops and the movement of the carry screw 1 also stops.
即ち、用紙１１の厚さの検出が、印字ヘッド２に依存す
ることなく紙押さえローラ７によって行われ、プラテン
３と印字ヘッド２とのすきまが自動的かつ最適に調整さ
れ、印字ヘッド２の位置決めが行われる。That is, the thickness of the paper 11 is detected by the paper pressing roller 7 without depending on the print head 2, the gap between the platen 3 and the print head 2 is automatically and optimally adjusted, and the position of the print head 2 is adjusted. will be held.
以上説明したように本発明は、紙押さえローラの動きと
印字ヘッドの動きとを連動させ、紙押さえローラの位置
によって用紙厚を検出して印字ヘッドの位置決めを行う
ことにより、短時間で、且つ機構部や用紙にダメージを
与えることなく紙厚調整を行うことができる効果がある
。As explained above, the present invention links the movement of the paper press roller with the movement of the print head, detects the paper thickness based on the position of the paper press roller, and positions the print head in a short time. This has the effect of making it possible to adjust the paper thickness without damaging the mechanism or the paper.
第１図は本発明の一実施例の構成を示す側面図である。
１・・・キャリッジ、２・・・印字ヘッド、３・・・プ
ラテン、４・・・モータ、５・・・カム、６・・・スラ
イダ、７・・・紙押さえローラ、８・・・ばね、９・・
・アーム、１０・・・スライダ、１１・・・用紙、１２
・・・レバー、１３・・・マイクロスイッチ。
代理人 弁理士 内 原 音FIG. 1 is a side view showing the configuration of an embodiment of the present invention. 1... Carriage, 2... Print head, 3... Platen, 4... Motor, 5... Cam, 6... Slider, 7... Paper holding roller, 8... Spring , 9...
・Arm, 10...Slider, 11...Paper, 12
...Lever, 13...Micro switch. Agent Patent Attorney Oto Uchihara
Claims (1)
記プラテンに押しつける紙押さえローラと、前記用紙の
厚さに応じて前記プラテンとの最適なすきまを保って位
置決めされる印字ヘッドとを有してなるプリンタの紙厚
調整機構において、前記紙押さえローラ及び前記印字ヘ
ッドの前記プラテンの半径方向への動きを連動して行わ
しむる連動駆動機構と、前記紙押さえローラが前記用紙
に接したことを検出し且つ前記プラテンに対する前記印
字ヘッドの最適な位置決めが行われる時点において前記
連動駆動機構を停止させる検出機構とを備えることを特
徴とするプリンタの自動紙厚調整機構。It has a platen on which paper to be printed is set, a paper pressing roller that presses the paper against the platen, and a print head that is positioned with an optimal clearance between it and the platen depending on the thickness of the paper. In the paper thickness adjustment mechanism of the printer, there is provided an interlocking drive mechanism that moves the paper press roller and the print head in a radial direction of the platen in conjunction with each other; An automatic paper thickness adjustment mechanism for a printer, comprising: a detection mechanism that detects and stops the interlocking drive mechanism at a time when the print head is optimally positioned with respect to the platen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5673388A JPH01228876A (en) | 1988-03-09 | 1988-03-09 | Automatic sheet thickness regulating mechanism for printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5673388A JPH01228876A (en) | 1988-03-09 | 1988-03-09 | Automatic sheet thickness regulating mechanism for printer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01228876A true JPH01228876A (en) | 1989-09-12 |
Family
ID=13035712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5673388A Pending JPH01228876A (en) | 1988-03-09 | 1988-03-09 | Automatic sheet thickness regulating mechanism for printer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01228876A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1464510A2 (en) * | 2003-04-03 | 2004-10-06 | Seiko Epson Corporation | Stable area detection device of platen gap and recording apparatus |
-
1988
- 1988-03-09 JP JP5673388A patent/JPH01228876A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1464510A2 (en) * | 2003-04-03 | 2004-10-06 | Seiko Epson Corporation | Stable area detection device of platen gap and recording apparatus |
| EP1464510A3 (en) * | 2003-04-03 | 2005-08-03 | Seiko Epson Corporation | Stable area detection device of platen gap and recording apparatus |
| US7040819B2 (en) | 2003-04-03 | 2006-05-09 | Seiko Epson Corporation | Stable area detection device of platen gap and recording apparatus |
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