JPS621560A - Platen of printing apparatus - Google Patents

Platen of printing apparatus

Info

Publication number
JPS621560A
JPS621560A JP14140685A JP14140685A JPS621560A JP S621560 A JPS621560 A JP S621560A JP 14140685 A JP14140685 A JP 14140685A JP 14140685 A JP14140685 A JP 14140685A JP S621560 A JPS621560 A JP S621560A
Authority
JP
Japan
Prior art keywords
main body
body part
pipe
diameter
platen
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
Application number
JP14140685A
Other languages
Japanese (ja)
Inventor
Kazuhiro Suzuki
一宏 鈴木
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP14140685A priority Critical patent/JPS621560A/en
Priority to US06/839,046 priority patent/US4799814A/en
Priority to GB8606036A priority patent/GB2172549B/en
Publication of JPS621560A publication Critical patent/JPS621560A/en
Priority to US07/227,547 priority patent/US4934850A/en
Pending legal-status Critical Current

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
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/02—Platens
    • B41J11/04—Roller platens
    • 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
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/48—Apparatus for condensed record, tally strip, or like work using two or more papers, or sets of papers, e.g. devices for switching over from handling of copy material in sheet form to handling of copy material in continuous form and vice versa or point-of-sale printers comprising means for printing on continuous copy material, e.g. journal for tills, and on single sheets, e.g. cheques or receipts
    • 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
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/58—Supply holders for sheets or fan-folded webs, e.g. shelves, tables, scrolls, pile holders
    • 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
    • B41J13/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in short lengths, e.g. sheets
    • B41J13/10—Sheet holders, retainers, movable guides, or stationary guides
    • B41J13/20—Bails

Landscapes

  • Handling Of Sheets (AREA)

Abstract

PURPOSE:To conserve the labor of manufacturing and assembling by making accuracy easy to develop and simplifying a structure and to reduce load of rotation by realizing wt. reduction while attaining cost reduction, by squeezing both ends of an equal diameter pipe to form a main body part having a large diameter and shafts parts each having a small diameter coaxial to the main body and respectively extending to the outside from both ends of said main body part while providing an elastic layer to the outer periphery of the main body part. CONSTITUTION:A platen consists of a pipe part 10 and an elastic layer 11. For example, the pipe part 10 is formed by using a tubular material made of aluminum or an aluminum alloy and integrally constituted of a main body part 12 having a large diameter and shaft parts 13 each having a small diameter by a method wherein both ends of the tubular material are squeezed by swaging and both ends or an outer diameter are finished by cutting processing and surface treatment such as alumite treatment, chromium plating or the spraying of a resin is performed if necessary. The elastic layer 11 is formed by a method wherein rubber subjected to extrusion processing is fitted to the outer periphery of the main body part 12 under pressure and surface finishing is applied to the outer surface of the rubber layer by a polishing plate. The pipe part 3 is closed by the shaft parts 13 to form the hollow part 14 in the main body part 12 to make it possible to prevent the leakage of printing sound to the outside.

Description

【発明の詳細な説明】 抜亙止乱 この発明は、ワイヤドツト・ディジ・インクジェット等
のプリンタ、プロッタ、タイプライタなどの印字装置に
適用することができる。詳しくは、そのような印字装置
において、たとえば装置本体の左右支持フレーム間に掛
は渡し、印字用紙をセットして記録ヘッドによるその用
紙への印字とともにその用紙を逐次搬送するプラテンに
関する。DETAILED DESCRIPTION OF THE INVENTION This invention can be applied to printing devices such as wire dot digital inkjet printers, plotters, and typewriters. Specifically, in such a printing device, the present invention relates to a platen that is placed between the left and right support frames of the main body of the device, sets printing paper, and sequentially conveys the paper as the recording head prints on the paper.

従来、この種のプラテンは、たとえば第５図に示すとお
り、鋼管（１）の外周にゴムパイプ（２）に巻き付けて
ローラ本体部（３）をつくるとともに。Conventionally, this type of platen has been constructed by wrapping a rubber pipe (2) around the outer periphery of a steel pipe (1) to form a roller main body (3), as shown in FIG. 5, for example.

該鋼管（１）の両端にそれぞれ棒材を圧入してシャフト
部（４）・（４）を形成していた。また、たとえば第６
図に示す如く、アルミニウム合金等からなる心金（５）
の外周にゴムパイプ（６）を巻き付けてローラ本体部（
７）をつくるとともに、該心金（５）の両端面にあけた
めくら穴（８）・（８）にそれぞれ棒材を圧入してシャ
フト部（９）・（９）としていた。Bars were press-fitted into both ends of the steel pipe (1) to form the shaft parts (4). Also, for example, the sixth
As shown in the figure, a core metal (5) made of aluminum alloy, etc.
Wrap the rubber pipe (6) around the outer circumference of the roller body (
7) was made, and rods were press-fitted into blind holes (8), (8) drilled on both end faces of the mandrel (5), respectively, to form shaft parts (9), (9).

そして、このようなプラテンは、たとえば印字装置本体
の左右両側の支持フレーム間に掛は渡され、かつ回動自
在に支持される。しかして、ステップモータ等のプラテ
ン駆動モータの回転を伝達し、印字とともに回転して適
宜該プラテンにセットした用紙を送っていた。Such a platen is, for example, hung between support frames on both the left and right sides of the main body of the printing apparatus, and is rotatably supported. Thus, the rotation of a platen drive motor such as a step motor is transmitted, and the paper rotates along with printing to appropriately feed the paper set on the platen.

しかしながら、上述した従来のプラテンは、ローラ本体
部（３）・（７）に別体の棒材をいちいち圧入してシャ
フト部（４）・（４）・（９）・（９）を形成する構造
であるから、精度面で難点があり、製作組立上手間がか
かる欠点があった。また、そのアルミニウム捧等ととも
に鋼管（１）や心金（５）等を用いるから、プラテン全
体として高価となり、かつ非常に重くなってその回転駆
動上好ましくないという欠点があった。However, in the conventional platen described above, the shaft parts (4), (4), (9), and (9) are formed by press-fitting separate rods into the roller body parts (3) and (7) one by one. Because of its structure, it has drawbacks in terms of accuracy and takes time to manufacture and assemble. In addition, since a steel pipe (1), a metal core (5), etc. are used together with the aluminum plate, the platen as a whole becomes expensive and extremely heavy, which is undesirable in terms of its rotational drive.

亘−一並 したがって、この発明の目的は、印字装置のプラテンに
あって、上述した従来の欠点を解消し。SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a platen for a printing device that overcomes the above-mentioned drawbacks of the prior art.

精度が出しやすく、構造を簡略にして製作組立の手数を
省き、軽量化を実現してその回転負荷を軽減するととも
に、コストダウンを図ることにある。The objective is to easily achieve accuracy, simplify the structure, save time in manufacturing and assembly, reduce weight, reduce rotational load, and reduce costs.

１−一腹 そのため、この発明による印字装置のプラテンは、等径
パイプ（１０）の両端を絞って、大径の本体部（１２）
とその本体部と同軸でその両端からそれぞれ外向きにの
びる小径のシャフト部（１３）・（１３）を形成し、前
記本体部（１２）の外周に弾性層（１１）を設けること
を特徴とする。1-1. Therefore, the platen of the printing device according to the present invention has a large diameter main body (12) by squeezing both ends of the equal diameter pipe (10).
It is characterized by forming small-diameter shaft parts (13) (13) coaxial with the main body and extending outward from both ends thereof, respectively, and providing an elastic layer (11) on the outer periphery of the main body (12). do.

以下、図面に示すこの発明の実施例に基づきこの発明に
ついて具体的かつ詳細に説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below based on embodiments of the invention shown in the drawings.

第１図はこの発明によるプラテンであり１図示する如く
パイプ部分（１０）と弾性層（１１）とからなる。FIG. 1 shows a platen according to the present invention, which, as shown in FIG. 1, consists of a pipe portion (10) and an elastic layer (11).

パイプ部分（１０）はたとえばアルミニウムやアルミニ
ウム合金製の管材を用い、その管材の両端をスウェージ
ング加工で絞って後、旋削加工して両端や外径を仕上げ
、必要に応じアルマイト処理やクロムメッキや樹脂の吹
き付は等の表面処理を行ってつくり、大径の本体部（１
２）とその本体部と同軸でその両端からそれぞれ外向き
にのびる小径のシャフト部（１３）・（１３）とで一体
に構成する。他方、弾性層（１１）は、押し出し加工し
たゴムを前述した本体部（１２）の外周に圧入し、外面
を研削盤で表面仕上げしてなる。For the pipe section (10), for example, a pipe material made of aluminum or aluminum alloy is used, and after swaging both ends of the pipe material, turning is performed to finish both ends and the outer diameter, and if necessary, anodizing, chrome plating, etc. The resin is sprayed on the surface and the large diameter main body (1
2) and small-diameter shaft parts (13) coaxial with the main body and extending outward from both ends of the main body. On the other hand, the elastic layer (11) is formed by press-fitting extruded rubber into the outer periphery of the aforementioned main body (12), and finishing the outer surface with a grinder.

しかし、上述したこの発明のプラテンを各種印字装置の
うち、たとえばインパクトプリンタ等のようにハンマで
プラテンを叩いて印字を行う印字装置に用いると、その
印字音が大きく反響する。However, if the above-described platen of the present invention is used in a printing device such as an impact printer that prints by hitting the platen with a hammer, the printing sound will resonate greatly.

したがって、この発明では、第２図および第３図に示す
如く、パイプ部分（１０）をシャフト部（１３）・（１
３）で塞いで本体部（１２）内に中空部（１４）を形成
し、印字音が外部に洩れないように構成することもでき
る。第２図に示すプラテンはパイプ部分（１０）の前記
したスウェージング加工によってシャフト部（１３）・
（１３）をつぶして密閉するもので、第３図に示すプラ
テンはパイプ部分（ｌＯ）のシャフト部（１３）・（１
３）両端にたとえばエポキシ系等の接着剤（１５）・（
１５）をつめて密閉するものである。また、この接着剤
（１５）・（１５）に代えてゴム・プラスチック・金属
等からなる栓をシャフト部（１３）・（１３）の両端に
嵌め込むようにしてもよい。Therefore, in this invention, as shown in FIGS. 2 and 3, the pipe portion (10) is replaced by the shaft portion (13)
3) to form a hollow part (14) in the main body part (12) so that printing sound does not leak outside. The platen shown in FIG. 2 is manufactured by the above-described swaging process of the pipe portion (10).
(13) is crushed and sealed, and the platen shown in Figure 3 is the shaft part (13) and (1
3) Apply adhesive (15), such as epoxy, to both ends.
15) is packed and sealed. Further, instead of the adhesive (15), (15), plugs made of rubber, plastic, metal, etc. may be fitted into both ends of the shaft portions (13), (13).

さらに、上述した如くこの発明のプラテンは、パイプ部
分（１０）に表面処理を施して耐摩耗性をもたせる構成
とする。しかし、このプラテンにおいて、特に耐摩耗性
を必要とする箇所は、シャフト部（１３）・（１３）の
軸受部材が取り付けられる部分であるから、この発明で
は、パイプ部分（１０）の表面処理に代えて、たとえば
第４図に示すとおりシャフト部（１３）・（１３）の外
周にリング（１６）・（１６）を圧入しこれらのリング
（１６）・（１６）で軸受部分の耐摩耗性を確保するよ
うにしてもよい。これらのリング（１６）・（１６）は
、プラスチック・含油メタル等でつくる。Further, as described above, the platen of the present invention is configured such that the pipe portion (10) is surface-treated to provide wear resistance. However, in this platen, the part that particularly requires wear resistance is the part where the bearing members of the shaft parts (13) and (13) are attached, so in this invention, the surface treatment of the pipe part (10) is Instead, for example, as shown in Fig. 4, rings (16) (16) are press-fitted onto the outer periphery of the shaft parts (13) (13), and these rings (16) (16) improve the wear resistance of the bearing part. It may also be possible to ensure that These rings (16) and (16) are made of plastic, oil-impregnated metal, or the like.

しかして、図示省略するが、シャフト部（１３）・（１
３）の外周に軸受部材を取り付け、その軸受部材を介し
てたとえば装置本体の面支持フレーム間に掛は渡す、そ
して、既知の如く、シャフト部（１３）に固着するプラ
テン歯車を介してプラテン駆動モータの回転を伝達し、
該プラテンを回転自在に支持し、紙送りを可能とする。Although not shown, the shaft portion (13) and (1
3) A bearing member is attached to the outer periphery of the shaft part (13), and the bearing member is used to extend the bridge between, for example, the surface support frames of the apparatus main body. Transmits motor rotation,
The platen is rotatably supported and paper can be fed.

なお、上述した実施例では、すべてシャフト部（１３）
・（１３）の径が均一な場合について説明したが。In addition, in the above-mentioned embodiments, all the shaft parts (13)
- The case (13) where the diameter is uniform has been explained.

必要に応じ段付きとすることもできる。It can also be stepped if necessary.

また、弾性層（１１）は、一層に限ることなく、二層以
上で形成してもよく、必要に応じて適宜表面処理を施す
こともできる。Further, the elastic layer (11) is not limited to one layer, and may be formed of two or more layers, and may be appropriately surface-treated if necessary.

肱−一果 この発明によれば、プラテンを基本的にパイプ部分と弾
性層でつくり、その構成を簡略にするから、精度が出し
やすく、製作組立が容易である。According to the present invention, the platen is basically made of a pipe portion and an elastic layer, and the structure is simplified, so that accuracy can be easily achieved and manufacturing and assembly are easy.

しかも、管材を用いるから、軽量で回転負荷を軽減する
ことができ、またコストダウンを可能とする。Moreover, since a tube material is used, it is lightweight, the rotational load can be reduced, and costs can be reduced.

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

第１図は、この発明のプラテンを示す断面図である。第
２図ないし第４図は、それぞれこの発明の他の実施例を
説明するプラテンの断面図である。 第５図および第６図は、それぞれ従来のプラテンを示す
断面図である。FIG. 1 is a sectional view showing a platen of the present invention. FIGS. 2 to 4 are sectional views of platens illustrating other embodiments of the present invention. FIGS. 5 and 6 are cross-sectional views showing conventional platens, respectively.

Claims (1)

【特許請求の範囲】[Claims] 等径パイプの両端を絞って、大径の本体部とその本体部
と同軸でその両端からそれぞれ外向きにのびる小径のシ
ャフト部を形成し、前記本体部の外周に弾性層を設けて
なる、印字装置のプラテン。Both ends of the equal-diameter pipe are squeezed to form a large-diameter main body and a small-diameter shaft that is coaxial with the main body and extends outward from both ends, and an elastic layer is provided on the outer periphery of the main body. Printer platen.
JP14140685A 1985-03-12 1985-06-27 Platen of printing apparatus Pending JPS621560A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP14140685A JPS621560A (en) 1985-06-27 1985-06-27 Platen of printing apparatus
US06/839,046 US4799814A (en) 1985-03-12 1986-03-12 Printer paper bail device
GB8606036A GB2172549B (en) 1985-03-12 1986-03-12 Paper guide device
US07/227,547 US4934850A (en) 1985-03-12 1988-08-02 Printer platen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14140685A JPS621560A (en) 1985-06-27 1985-06-27 Platen of printing apparatus

Publications (1)

Publication Number Publication Date
JPS621560A true JPS621560A (en) 1987-01-07

Family

ID=15291263

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14140685A Pending JPS621560A (en) 1985-03-12 1985-06-27 Platen of printing apparatus

Country Status (1)

Country Link
JP (1) JPS621560A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS595347B2 (en) * 1980-05-08 1984-02-03 住友電気工業株式会社 Enameled wire baking furnace

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS595347B2 (en) * 1980-05-08 1984-02-03 住友電気工業株式会社 Enameled wire baking furnace

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