JPH01258970A - Printer - Google Patents

Printer

Info

Publication number
JPH01258970A
JPH01258970A JP8674088A JP8674088A JPH01258970A JP H01258970 A JPH01258970 A JP H01258970A JP 8674088 A JP8674088 A JP 8674088A JP 8674088 A JP8674088 A JP 8674088A JP H01258970 A JPH01258970 A JP H01258970A
Authority
JP
Japan
Prior art keywords
platen
paper
printing
paper transport
transport
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
JP8674088A
Other languages
Japanese (ja)
Inventor
Masao Gomi
正男 五味
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.)
Kodak Digital Product Center Japan Ltd
Original Assignee
Kodak Digital Product Center Japan 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 Kodak Digital Product Center Japan Ltd filed Critical Kodak Digital Product Center Japan Ltd
Priority to JP8674088A priority Critical patent/JPH01258970A/en
Publication of JPH01258970A publication Critical patent/JPH01258970A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00Devices 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
    • B41J11/02Platens
    • B41J11/04Roller platens

Abstract

PURPOSE:To allow transport and printing of paper to be performed in a stable condition by forming numerous fine grooves, in a paper feed direction, on the surface of a rubber cylinder of a platen. CONSTITUTION:Paper transported along the periphery of a platen 14 is printed by a printing head. At that time, numerous fine grooves 20 are formed, along a paper transport direction, on the surface of the platen 14. Consequently, it is easy to adjust the contact pressure of a bail roller against the platen 14 and also restrict a change in paper transport capability at a wide range of applicable temperatures and obtain adequate paper transport capability.

Description

【発明の詳細な説明】 〔発明の目的〕 (産業上の利用分野) 本発明は、プラテンを改良したノンインパクトタイプの
プリンターに関する。
DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a non-impact type printer with an improved platen.

(従来の技術) 一般的なプリンターの用紙移送部の構成を第2図により
説明する。ファンフォールド紙のような用紙11に印字
を行なう場合、まず、用紙11をトラクター12の回転
により、その外周に設けた送り爪13を用いて前方に位
置するプラテン14に向って送る。そして、用紙11は
プラテン14の外周のペイルローラ16によって圧接さ
れ、プラテン14の回転によって移送される。この際、
用紙11はプラテン14と相対する位置にある印字ヘッ
ド17により印字される。
(Prior Art) The configuration of a paper transport section of a general printer will be explained with reference to FIG. When printing on paper 11 such as fanfold paper, first, paper 11 is rotated by tractor 12 and sent toward platen 14 located in front using feed pawls 13 provided on its outer periphery. Then, the paper 11 is pressed by a pail roller 16 on the outer periphery of the platen 14, and is transported by rotation of the platen 14. On this occasion,
Printing is performed on the paper 11 by a print head 17 located opposite the platen 14.

上記プラテン14は、ゴム製の円筒体からなり、その表
面は荒加工後に研摩された平面形状である。
The platen 14 is made of a cylindrical body made of rubber, and its surface has a planar shape that is rough-processed and then polished.

このプラテン14の直径は用紙移送能力に直接関与する
ものであり、また、用紙移送能力は先行するトラクター
12の移送能力と同等でな【プればならf1極めて精密
な加工寸法管理を要している。
The diameter of this platen 14 is directly related to the paper transport capacity, and the paper transport capacity is not equivalent to that of the preceding tractor 12. There is.

(発明が解決しようとする課題) 従来のプリンターでは、単票用紙を用いる場合は、第2
図で示したプレッシャローラ15およびペイル0−ラ1
6をプラテン14の表面に圧接させて印字および用紙送
りを行なっているが、用紙11を連続的に送って印字す
る場合は、プラテン14からプレッシャローラ15とペ
イルローラ16とをはずして印字を行なっている。これ
はプラテン14からべイルローラ1Gおよびプレッシャ
ローラ15をはずしておかないと、トラクター12の用
紙移送量とのちがいにより、用紙11がトラクター12
から外れたり、トラクター12とプラテン14との間に
用紙11かたまったりしてしまう現象が牛したためであ
る。
(Problem to be solved by the invention) In conventional printers, when using cut paper, the second
Pressure roller 15 and pail 0-ra 1 shown in the figure
6 is brought into pressure contact with the surface of the platen 14 for printing and paper feeding. However, when printing by continuously feeding the paper 11, the pressure roller 15 and the pale roller 16 are removed from the platen 14 for printing. . If the bail roller 1G and pressure roller 15 are not removed from the platen 14, the paper 11 will be transferred to the tractor 12 due to the difference in the amount of paper transported by the tractor 12.
This is due to the phenomenon that the paper 11 sometimes comes off or gets stuck between the tractor 12 and the platen 14.

本発明の目的は、ペイルローラをはヂさなくても安定な
用紙の移送が可能なプラテンを備えたプリンターを提供
することにある。
SUMMARY OF THE INVENTION An object of the present invention is to provide a printer equipped with a platen that can transport paper stably without using a pail roller.

〔発明の構成〕[Structure of the invention]

(課題を解決するための手段) 本発明によるプリンターは、プラテンの外周に沿って移
送される用紙に、印字ヘッドにより印字を行なうもので
、前記プラテンは、ゴム製の円筒体の表面に、用紙送り
方向に泊って多数の細溝を形成したものである。
(Means for Solving the Problems) A printer according to the present invention uses a print head to print on a sheet of paper that is transported along the outer periphery of a platen, and the platen has a surface of a cylindrical body made of rubber. It has many narrow grooves extending in the same direction.

(作用) 本発明では、プラテンの表面に、用紙移送方向に沿って
多数の細溝を形成することにより、プラテンに対するペ
イルローラの圧接力調節が容易であり、かつプラテンの
直径の加工精度が多少低T Lでも、満足できる用紙移
送能力を111にとができる。
(Function) In the present invention, by forming a large number of narrow grooves along the paper transport direction on the surface of the platen, it is easy to adjust the pressure contact force of the pail roller against the platen, and the processing accuracy of the platen diameter is slightly reduced. Even with TL, a satisfactory paper transport capacity of 111 can be achieved.

(実施例) 以下、本発明の一実施例を図面を参照して説明する。(Example) Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

プラテン自体の基本的構成は、前記第2図で示したもの
と同じであり、説明は省略する。
The basic structure of the platen itself is the same as that shown in FIG. 2, and its explanation will be omitted.

本発明の特徴とするプラテン14の構造を第1図により
説明する。
The structure of the platen 14, which is a feature of the present invention, will be explained with reference to FIG.

プラテン14は、ゴム(SBR1硬度80°)製の円筒
体からなり、その軸芯部には支軸19が一体に設けられ
ている1、また、プラテン14の表面には用紙の送り方
向、すなわち外周り向に沿って多数の細溝20がBいに
隣接して形成されている。、この細!M20はゴム製円
筒体の表面に切削加工を庵すことにより形成される。
The platen 14 is made of a cylindrical body made of rubber (SBR1 hardness 80°), and has a supporting shaft 19 integrally provided at its core. A large number of narrow grooves 20 are formed adjacent to the groove along the outer circumferential direction. , this thin! M20 is formed by cutting the surface of a rubber cylinder.

また、細溝20は、山のピッチが2山/ mtt+、山
径と谷径との差が15・〜30μm程度の6ので、山の
頂点には丸味をイ」【プておく。この丸味は簡単な研摩
により形成できる。
Further, since the narrow groove 20 has a pitch of 2 peaks/mtt+ and a difference between the peak diameter and the valley diameter of about 15.about.30 μm, the top of the peak is rounded. This roundness can be created by simple polishing.

ここで、グラ1ン直径をφ32.34(−40,06)
とすると、 l−ラフター12の直径はφ 32.34
(〜−0,06)となる。
Here, the grain diameter is φ32.34 (-40,06)
Then, the diameter of l-rafter 12 is φ 32.34
(~-0,06).

上記構成において、プラテン14の表面に、用紙の移送
方向に沿って多数の細溝20を形成することにより、プ
ラテン14に対するペイルローラ16の圧接力調節が容
易である。また、プラテン14の直径の加工精度を多少
おとしても、満足できる用紙移送能力が得られる。、さ
らに、用紙移送能力(紙との摩擦力)についても、第3
図で示すように、1i!Ii線で示す従来のプラテンA
に比べ、実線で示す本発明のプラテンBは、幅広い使用
温度環境において用紙移送能力の変動が抑制される。
In the above configuration, by forming a large number of narrow grooves 20 on the surface of the platen 14 along the paper transport direction, the pressing force of the pail roller 16 against the platen 14 can be easily adjusted. Further, even if the machining accuracy of the diameter of the platen 14 is slightly reduced, a satisfactory paper transport ability can be obtained. , Furthermore, regarding the paper transfer ability (frictional force with paper), the third
As shown in the figure, 1i! Conventional platen A shown by line Ii
Compared to the platen B of the present invention shown by the solid line, fluctuations in paper transport ability are suppressed in a wide range of operating temperature environments.

これらの結果、用紙11をブラ1ン14にペイルローラ
16を圧接させた状態で移送させながら、印字ヘッド1
7により8続的に印字を行なってら、従来のにうに用w
、11がトラクター12から外れたり、プラテン14と
の間にたまったりすることイエく、安定した移送状態を
保つことができる。
As a result, the print head 1 is moved while the paper 11 is being transported with the pale roller 16 in pressure contact with the blank 14.
If you print 8 times continuously using 7, you can use the conventional
, 11 will not come off the tractor 12 or accumulate between it and the platen 14, and a stable transport state can be maintained.

また、ブラ”1ン14の部分で、摩擦力による用紙移送
能力がほど良く設定されるので、印字品質が向上する。
In addition, since the paper transport ability based on frictional force is appropriately set in the portion of the blank 14, printing quality is improved.

さらに、プラテン14への細溝20の形成は、切削加工
によって行なわれるため、従来の精密加工に比べ、かえ
ってコストが低減される。。
Furthermore, since the narrow grooves 20 are formed in the platen 14 by cutting, the cost is actually reduced compared to conventional precision machining. .

なお、単票紙(シート紙)の移送にはトラクター12は
関与せずにプラテン14のみで移送を行/にうため、加
工された■Iif%20の1ノ向に多少の用紙ずれが生
じるが、大きな問題ではなく、使用者がこのことを心1
1ていれば、印字品質が低下することはない。
In addition, since the tractor 12 is not involved in transporting the cut paper (sheet paper) and the transport is performed only by the platen 14, some paper deviation occurs in the 1 direction of the processed ■Iif%20. However, it is not a big problem and users should keep this in mind.
1, the print quality will not deteriorate.

〔発明の効果) 以上のように本発明によれば、ファンノA−ルド紙のよ
うな用紙を移送しながら、印字を行なうに際し、従来の
ように用紙が、ペイルローラをはずさなくてもトラクタ
ーから外れたり、プラテンとの間にたまったりすること
なく、安定した状態で移送および印字を行なうことがで
きる。
[Effects of the Invention] As described above, according to the present invention, when printing while transporting paper such as Fano A-old paper, the paper does not come off the tractor without removing the pail roller as in the conventional case. It is possible to transport and print in a stable state without the paper becoming stuck or accumulating between the platen and the platen.

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

第1図は本発明のプリンターに用いるブラテンの一実施
例を示す正面図、第2図は一般的なプリンターの用紙移
送m横を示す側面図、第3図は本発明で用いるプラテン
の温度に対する用紙移送能力の関係を示す特性図である
。 11・・用紙、14・・プラテン、17・・印字ヘッド
、20・・細溝。 ′$2Z
Fig. 1 is a front view showing an embodiment of the platen used in the printer of the present invention, Fig. 2 is a side view showing the paper transport m side of a general printer, and Fig. 3 is a diagram showing the temperature of the platen used in the present invention. FIG. 3 is a characteristic diagram showing the relationship between paper transfer capabilities. 11...paper, 14...platen, 17...print head, 20...narrow groove. '$2Z

Claims (1)

【特許請求の範囲】[Claims] (1)プラテンの外周に沿って移送される用紙に、印字
ヘッドによって印字を行なうプリンターにおいて、 前記プラテンは、ゴム製の円筒体の表面に、用紙送り方
向に沿って多数の細溝を形成したことを特徴とするプリ
ンター。
(1) In a printer that uses a print head to print on paper that is transported along the outer periphery of a platen, the platen has a large number of narrow grooves formed on the surface of a cylindrical rubber body along the paper feeding direction. A printer featuring
JP8674088A 1988-04-08 1988-04-08 Printer Pending JPH01258970A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8674088A JPH01258970A (en) 1988-04-08 1988-04-08 Printer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8674088A JPH01258970A (en) 1988-04-08 1988-04-08 Printer

Publications (1)

Publication Number Publication Date
JPH01258970A true JPH01258970A (en) 1989-10-16

Family

ID=13895203

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8674088A Pending JPH01258970A (en) 1988-04-08 1988-04-08 Printer

Country Status (1)

Country Link
JP (1) JPH01258970A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7186043B2 (en) * 2004-04-08 2007-03-06 Paxar Americas, Inc. Linerless web utilizing apparatus and methods having dual function stripper element

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59187879A (en) * 1983-04-08 1984-10-25 Canon Inc Manufacture of roller
JPS61254365A (en) * 1985-05-08 1986-11-12 Seiko Epson Corp Platen for thermal printer

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59187879A (en) * 1983-04-08 1984-10-25 Canon Inc Manufacture of roller
JPS61254365A (en) * 1985-05-08 1986-11-12 Seiko Epson Corp Platen for thermal printer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7186043B2 (en) * 2004-04-08 2007-03-06 Paxar Americas, Inc. Linerless web utilizing apparatus and methods having dual function stripper element

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