JPS60981A - Printing apparatus - Google Patents

Abstract

PURPOSE:To provide a printing apparatus enabled in miniaturization and wt. reduction, constituted by mounting a cylindrical paper allowance part, of which the revolving center is equal to that of the platen and the diameter is almost equal to the outer diameter of the platen, at the specific position thereof. CONSTITUTION:A platen 1 and a rotary lever (e.g., a paper press mechanism operating lever) 8 equipped with a cylindrical paper allowacne part 8a, of which the revolving center 2 is equal to that of the aforementioned platen 1 and the diameter is almost equal to the outer diameter of the platen, so as to be adjacent to the platen 1 on the extended line in the longitudinal direction of said platen 1 are mounted to constitute an objective apparatus. EFFECT:By providing a space for winding the end part of printing paper by equalizing a part of the rotary lever 8 to the outer diameter of the platen 1, printing receives no trouble even if the width B of the platen 1 is made smaller than the max. width A of the printing paper and the width (h) of a printing apparatus can be made small as compared with that of a conventional one. If the outer peripheral surface of the bearing 5 of the platen shaft is constituted as the shaft member of the rotary lever, the rotary operation of the rotary lever can be made smooth and the cost reduction thereof can be achieved.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は円筒形のプラテンを具備するタイプライタ等の
印字装置に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a printing device such as a typewriter having a cylindrical platen.

従来例の構成とその問題点 近年、印字用紙を巻きつけたプラテンと適宜の間隔を保
ち、印字機構全載置したギヤ＋１　、ｙジと相対的に横
移動しながら印字を行なう印字装置が多数出現している
。これらの印字装置は小型、軽量化の傾向にあり、特に
用紙保持部は用紙の「１１寸法を減らすことが不可能な
だけに、小型化の障害となっている。Conventional structure and its problems In recent years, there have been many printing devices that perform printing while maintaining an appropriate distance from the platen wrapped with printing paper and moving laterally relative to the gears +1 and y on which the entire printing mechanism is mounted. It is appearing. These printing devices tend to be smaller and lighter, and the paper holder in particular is an obstacle to miniaturization because it is impossible to reduce the ``11 dimensions'' of the paper.

以下図面を参照しながら従来の印字装置について出？明
する。第１図は従来の印字装置のプラテン部の要部断面
図であり、１はプラテン、２および３はプラテン軸、４
および５は軸受、６は機枠、７は図示しない紙押え機構
の作動レバーで、軸受４および５にプラテン軸２および
３を枢着し、これ全機枠６に（Ｘ　ｉＪ＝している。プ
ラテン軸３には図示しない紙押え機構の作動レバー７が
軸受５の外側に設けられ、プラテン１に巻きつけだ印字
用紙の保持および解脱時に動作される。さらに、プラテ
ン軸３の最右端には図示しないプラテン回転機構が取９
つけられ、図示しない印字機構ｋｔｌｊｋ置したキャリ
ッジにより印字が行なわれた後、必要に応じてプラテン
１を回転して紙送りｉｌｔ！ｊ作を行なう。Please refer to the drawings below to learn about conventional printing devices. I will clarify. FIG. 1 is a sectional view of the main part of the platen part of a conventional printing device, where 1 is a platen, 2 and 3 are platen shafts, and 4 is a platen shaft.
and 5 are bearings, 6 is a machine frame, and 7 is an operating lever of a paper holding mechanism (not shown).The platen shafts 2 and 3 are pivotally connected to the bearings 4 and 5, An operating lever 7 of a paper holding mechanism (not shown) is provided on the platen shaft 3 on the outside of the bearing 5, and is operated when holding and releasing the printing paper wound around the platen 1. The platen rotation mechanism (not shown) is
After printing is performed by a carriage equipped with a printing mechanism (not shown), the platen 1 is rotated as necessary to feed the paper! j Make a work.

従来の印字装置は以上のように構成され、動作する。し
かしながら、上記のような構成においては、印字用紙の
最大許容巾とプラテン１の１１寸法人が等しく、これに
軸受４，５と作動レバーγおよびプラテン回転機構の１
１寸法が付加されるため、すなわち軸受４側の１〕Ｙ１
、軸受５側の巾Ｙ２が伺加され、印字装置の全巾（Ｈ＝
Ａ＋Ｙ＋　＋Ｙ２　）を小さくできないという問題点を
有していた。The conventional printing device is configured and operates as described above. However, in the above configuration, the maximum allowable width of the printing paper and the 11 dimensions of the platen 1 are equal, and the bearings 4 and 5, the operating lever γ, and the 11 dimensions of the platen rotation mechanism are equal to each other.
Since 1 dimension is added, that is, 1]Y1 on the bearing 4 side
, the width Y2 on the bearing 5 side is added, and the total width of the printing device (H=
There was a problem that A+Y+ +Y2) could not be made small.

発明の目的 本発明は全「１１寸法を小さくした印字装置を提供する
こと全目的とするものである。OBJECTS OF THE INVENTION It is an object of the present invention to provide a printing device with reduced overall dimensions.

発明の構成 本発明の印字装置は、プラテンと、前記プラテンと回動
中心が等しく前記プラテンの外径と略等しい円筒形の用
紙許容部を前記プラテンの長手方向の延長上に隣接して
備える回転レバーとを具備してなるよう構成したもので
あり、これによりプラテン１１１ヲ用紙１１よシ小さく
して巾の狭い印字装＠全実現するものである。Composition of the Invention The printing device of the present invention includes a platen, and a cylindrical paper-accepting portion whose rotation center is the same as that of the platen and substantially equal to the outer diameter of the platen, which is adjacent to the platen in the longitudinal direction. This configuration allows the platen 111 to be made smaller than the paper 11, thereby realizing a narrow printing device.

実施例の説明 以下本発明の一実施例について、図面全参照しながら説
明する。DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to all the drawings.

第２図は本発明の一実施例における印字装置の一部切欠
要部斜視図を示すものである。第２図において８は後述
する紙押え機構の作動を突起部８ｂで行ない、プラテン
１の外径と等しい円筒形の用紙許容部８ａｉプラテン１
の長手方向の延長上に隣接して備える作動レバーであり
、９は紙押えローラ、１Ｑは紙押えローラを挾持する−
７１のホルダ、１１はホルダ１ｏ２１区着した曲１１１
２ヲｆ系Ｕ二する一対の支持レバーである。FIG. 2 is a partially cutaway perspective view of a printing device according to an embodiment of the present invention. In FIG. 2, reference numeral 8 denotes a cylindrical sheet-accepting portion 8ai, which operates a paper holding mechanism, which will be described later, with a protruding portion 8b, and has a cylindrical paper-accepting portion 8ai having the same outer diameter as the platen 1.
9 is a paper press roller, and 1Q is an operating lever provided adjacent to the longitudinal extension of the paper press roller.
71 holder, 11 is the song 111 that arrived in holder 1 o 21.
This is a pair of support levers that support the 20F series U2.

第３図は機枠６と支持レバー１１を示ず一部切欠要部斜
視図である。FIG. 3 is a partially cutaway perspective view of the main part without showing the machine frame 6 and the support lever 11.

支持レバー１１は機枠６のクリソ１−穴部６ａに嵌着さ
れ、機枠６のバネ挟部６ｂと支持レバー１１のバネ掛部
１１ａに張架したばね１３が鉛直上方に付勢する。１４
は機枠６の軸受部６Ｃに枢着された軸１５に固着したレ
バー、１６は軸１２の両端部１２Ｂ−に係合する保合部
１６ａｉ設けたペーパーガイドである。The support lever 11 is fitted into the hole 6a of the machine frame 6, and a spring 13 stretched between the spring clamp part 6b of the machine frame 6 and the spring hook part 11a of the support lever 11 biases it vertically upward. 14
Reference numeral 16 indicates a lever fixed to a shaft 15 which is pivotally connected to a bearing portion 6C of the machine frame 6, and a paper guide 16 is provided with retaining portions 16ai that engage with both ends 12B- of the shaft 12.

第４図は第２図の一実施例の要部断面図である。FIG. 4 is a sectional view of a main part of one embodiment of FIG. 2.

なお、１はプラテン、２および３はプラテン軸、４およ
び５は軸受、６は機枠でこれらは従来例の構成と同じも
のである。Note that 1 is a platen, 2 and 3 are platen shafts, 4 and 5 are bearings, and 6 is a machine frame, which are the same as those of the conventional example.

以上のように構成された本実施例の印字装置について以
下その動作全説明する。まず、印字用紙をベーパーガイ
ド１６の挿入部１６ｂから挿入し、プラテン１に巻きつ
ける。この時、印字用紙がゆがんで巻きつけられた場合
、作動レバー８を矢印Ｃ方向に回転させると、レバー１
４が作動レバー８の突起部８ｂに押され、矢印り方向に
回動する。The entire operation of the printing apparatus of this embodiment configured as described above will be explained below. First, printing paper is inserted through the insertion portion 16b of the vapor guide 16 and wound around the platen 1. At this time, if the printing paper is twisted and wrapped, when the operating lever 8 is rotated in the direction of arrow C, lever 1
4 is pushed by the projection 8b of the operating lever 8 and rotates in the direction of the arrow.

支持レバー１１が上方に回動するの全押さえていたレバ
ー１４もばね１３の付勢力に抗して矢印り方向に回動し
、支持レバー１１およびホルダ１゜全弁して紙押えロー
２９が鉛直下方に押し下げられる。この状態では、印字
用紙がプラテン１と紙押えローラ９とに挾まれて保持さ
れていたものが、解脱されるため、自由に印字用紙のゆ
がみを修正することができる。When the support lever 11 rotates upward, the lever 14, which had been fully held down, also rotates in the direction of the arrow against the biasing force of the spring 13, and the support lever 11 and the holder 1 degree are fully opened and the paper presser row 29 is rotated. It is pushed vertically downward. In this state, the print paper that was held between the platen 1 and the paper pressing roller 9 is released, so that the distortion of the print paper can be freely corrected.

印字用紙を修正した後、作動レバー８を矢印Ｃと反対方
向に回動し、前記と逆の手順で紙押えローラ９が印字用
紙をプラテン１に押しつける。After correcting the printing paper, the operating lever 8 is rotated in the direction opposite to the arrow C, and the paper pressing roller 9 presses the printing paper against the platen 1 in the reverse procedure.

印字用紙の巾に対し一般に、印字できる［１］は多少小
さくなっている。そのため印字用紙の１］は最大で人で
あるが、印字による衝撃力を受けるプラテン１の巾は作
動レバー８の用紙許容部８ａのｌ］だけ短かくＢとなっ
ても実用上問題ない。すなわち軸受４側のＩｌ］Ｙｊは
従来と同じであるが、　軸受５側の１ｌｙ２を従来のＹ
２より小さくできる。したがって印字装置の巾ｈ　（ｈ
＝Ａ＋Ｙ＋　十ｙ２　）を従来の巾Ｈよりも小さくする
ことが可能である。Generally, the printable [1] is somewhat smaller than the width of the printing paper. Therefore, the width of the printing paper 1] is at most a person, but there is no practical problem even if the width of the platen 1, which receives the impact force due to printing, is shortened by the width B of the paper allowance portion 8a of the operating lever 8, which is B. In other words, Il]Yj on the bearing 4 side is the same as the conventional one, but 1ly2 on the bearing 5 side is the same as the conventional Y
It can be made smaller than 2. Therefore, the width of the printing device h (h
=A+Y+ y2) can be made smaller than the conventional width H.

以上のように本実施例によれば、紙押え機構の作動レバ
ーの一部をプラテンの外径と等しくして、印字用紙の端
部全巻きつけるスペースとし、プラテンの長さＢを最大
印字幅（Ｂ＜Ａ　）に設定することにより印字上には何
ら支障はな〈従来と同じ印字幅を確保でき、印字装置の
全［１］ヲ小さくすることが可能となる。また、プラテ
ンの畏さが従来より小さくなったので重量の大きい弾性
部が減ることになシ印字装置の軽量化も図れる。As described above, according to this embodiment, a part of the operating lever of the paper holding mechanism is made equal to the outer diameter of the platen to provide a space for wrapping the entire edge of the printing paper, and the length B of the platen is set to the maximum printing width. By setting (B<A), there is no problem in printing (the same printing width as before can be ensured, and it is possible to reduce the total size of the printing device [1]). Furthermore, since the platen is smaller than before, the weight of the printing device can be reduced by reducing the need for heavy elastic parts.

なお、本実施例では作動レバーを紙押え機構の作動用と
したが、回動するレバーであれば作動レバーは、例えば
紙送り量を切換えるだめのレバーでもよい。In this embodiment, the actuating lever is used to operate the paper holding mechanism, but the actuating lever may be a lever for changing the amount of paper feed, for example, as long as it is a lever that rotates.

まプこ、プラテンの右、左それぞれの側に紙押え機構の
作動レバーおよび紙送り量切換レバーを配置してもよい
。The operating lever of the paper holding mechanism and the paper feed amount switching lever may be arranged on the right and left sides of the map platen and the platen, respectively.

発明の効果 本発明はプラテンと回動中心が等しくプラテンの外径と
略等しい円筒形の用紙許容部を備える回転レバーを具備
して構成しているので、印字装置のプラテンを奸く、即
ち印字装置自体を小型にできるという優れた効果が得ら
れる。また、回転レバーの用紙許容部がプラテンと隣接
するため、外観上、プラテンの側端面の目隠しも兼ねる
という効果が得られる。Effects of the Invention The present invention is configured with a rotary lever having a cylindrical sheet allowing portion whose rotation center is the same as that of the platen and is approximately equal to the outside diameter of the platen, so that the platen of the printing device is rotated, that is, printing is not possible. An excellent effect can be obtained in that the device itself can be made smaller. Furthermore, since the paper permitting portion of the rotary lever is adjacent to the platen, an effect can be obtained in terms of appearance that it also serves as a cover for the side end surface of the platen.

さらに、プラテン軸の軸受の外周面全回転レバーの軸部
月として構成することにより、回転レバーの回転動作を
円滑にしかも低コストで実現できる。Further, by configuring the outer circumferential surface of the bearing of the platen shaft as the shaft portion of the fully rotating lever, the rotating operation of the rotary lever can be realized smoothly and at low cost.

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

第１図は従来の印字装置の要部断面図、第２図は本発明
の一実施例における印字装置の一部切欠要部斜視図、第
３図は第２図の構成要素の一部を表わす切欠要部斜視図
、第４図は第２図の一実施例の要部断面図である。 １・・・・・・プラテン、２，３・・・・・・プラテン
軸、４゜５・・・・・・軸受、６・・・・・・機枠、７
，８・・・・・・作動レバー、９・・・・・・紙押えロ
ーラ、１Ｑ・・・・・・ホルダ、１１・・・・・・支持
レバー、１２・・・・・・軸、１３・・・・・・ばね、
１４・・・・・・レバー、１５・・・・・・軸、１６・
・・・・ペーパーガイド。FIG. 1 is a sectional view of a main part of a conventional printing device, FIG. 2 is a partially cutaway perspective view of a printing device according to an embodiment of the present invention, and FIG. 3 shows some of the components of FIG. FIG. 4 is a perspective view of the main part of the notch, and FIG. 4 is a sectional view of the main part of the embodiment shown in FIG. 1...Platen, 2, 3...Platen shaft, 4゜5...Bearing, 6...Machine frame, 7
, 8...Operating lever, 9...Paper presser roller, 1Q...Holder, 11...Support lever, 12...Shaft, 13... Spring,
14...Lever, 15...Shaft, 16.
...Paper guide.

Claims (3)

【特許請求の範囲】[Claims] （１）　プラテンと、前記プラテンと回動中心が等しく
前記プラテンの外径と略等しい円筒形の用紙γ「容部を
前記プラテンの長手方向の延長上に隣接して備える回転
レバーとを具備してなる印字装置Ｌ(1) A rotary lever comprising a platen and a rotary lever having a cylindrical sheet γ container portion whose center of rotation is the same as that of the platen and substantially equal to the outer diameter of the platen, and is adjacent to the platen in the longitudinal direction. Printing device L （２）　プラテン軸の軸受部材の外周面を回転レバーの
軸部材としたことを特徴とする特許請求の範囲第１項記
戦の印字装置。(2) The printing device according to claim 1, wherein the outer peripheral surface of the bearing member of the platen shaft is used as the shaft member of the rotary lever. （３）回転レバーが紙押え機構作動レバーであることを
特徴とする特許請求の範囲第１項捷たは第２項記載の印
字装置。(3) The printing device according to claim 1 or 2, wherein the rotating lever is a paper presser mechanism operating lever.