JPS60165276A - Paper guide mechanism for printer - Google Patents

Paper guide mechanism for printer

Info

Publication number
JPS60165276A
JPS60165276A JP2035284A JP2035284A JPS60165276A JP S60165276 A JPS60165276 A JP S60165276A JP 2035284 A JP2035284 A JP 2035284A JP 2035284 A JP2035284 A JP 2035284A JP S60165276 A JPS60165276 A JP S60165276A
Authority
JP
Japan
Prior art keywords
guide plate
auxiliary guide
paper
platen
sub
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
JP2035284A
Other languages
Japanese (ja)
Inventor
Toshio Kawakubo
川久保 俊夫
Chuji Ishikawa
忠二 石川
Shizuo Yokoyama
横山 静男
Tsutomu Sato
勉 佐藤
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 JP2035284A priority Critical patent/JPS60165276A/en
Publication of JPS60165276A publication Critical patent/JPS60165276A/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
    • B41J13/00Devices 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
    • B41J13/10Sheet holders, retainers, movable guides, or stationary guides
    • B41J13/14Aprons or guides for the printing section

Landscapes

  • Handling Of Continuous Sheets Of Paper (AREA)
  • Handling Of Cut Paper (AREA)

Abstract

PURPOSE:To prevent a poor quality of printing and skewing completely by providing a sub-auxiliary guide plate in a clearance between a platen and an auxiliary guide plate to support the auxiliary guide plate with the sub auxiliary guide plate. CONSTITUTION:A sub-auxiliary guide plate 10 is made of material lower in the rigidity and friction resistance, for example, polyester film and the base end thereof is fastened on the auxiliary guide plate 6 being supported in a natural condition. When setting a paper 5, as the auxiliary guide plate 6 faces a platen 1, the sub-auxiliary guide plate 10 deflects in contact with the platen 1 to keep the paper 5 tight on the platen 1. This prevents deflection due to a clearance between the platen and the auxiliary guide plate completely thereby eliminating a poor quality of printing and possible skewing.

Description

【発明の詳細な説明】 抜擢分史 この発明は、プリンタ・プロッタ・タイプライタ・プロ
ッタプリンタ等の印字装置にあって、供給された用紙を
プラテンに巻き付はセットするとき、まず用紙をディフ
レクタで案内し、該ディフレクタを出た用紙を次に補助
ガイド板で案内してプラテンとペーパーペイルローラと
の間へと導く用紙案内機構に関する。
[Detailed Description of the Invention] Selected History This invention is used in printing devices such as printers, plotters, typewriters, and plotter printers. The present invention relates to a paper guide mechanism that guides the paper that has exited the deflector and then guides the paper that has exited the deflector using an auxiliary guide plate to guide it between a platen and a paper pail roller.

良米抜4 従来、この種の用紙案内機構は、たとえば第1図に示す
如き植成であった。図中符号(1)で示すものは1図中
矢印(a)方向に回転するプラテンである。プラテン(
1)の下側には、該プラテン(1)の外周に沿って板状
のディフレクタ(2)が設置される。図示されないが、
このディフレクタ(2)には複数の窓がプラテン軸方向
に4列に並べてあけられ、それらの窓を通して2列に配
列されたプレッシャローラ(3)・(4)がそれぞれ前
記プラテン(1)に押し当てられ、またはその押し当て
が解除される溝成となっている。よって、たとえば用紙
をオートセットするとき、図示するようにプラテン(1
)の後方から用紙(5)が供給されると、該用紙(5)
はプラテン(1)とプレッシャローラ(3)とで挟まれ
て図中矢印(b)方向に送られ、やがてプラテン(1)
とプレッシャローラ(4)との間でも挟まれてディフレ
クタ(2)で案内されながら順次送られることとなる。
Good rice removal 4 Conventionally, this type of paper guiding mechanism has been of the type shown in FIG. 1, for example. What is indicated by the reference numeral (1) in the figure is a platen that rotates in the direction of arrow (a) in the figure. Platen (
A plate-shaped deflector (2) is installed below the platen (1) along the outer periphery of the platen (1). Although not shown,
This deflector (2) has a plurality of windows arranged in four rows in the platen axis direction, and through these windows, pressure rollers (3) and (4) arranged in two rows push the platen (1), respectively. It has a groove structure that allows it to be pressed or released. Therefore, for example, when automatically setting paper, the platen (1
), when the paper (5) is fed from behind, the paper (5)
is sandwiched between the platen (1) and the pressure roller (3) and sent in the direction of arrow (b) in the figure, and eventually the platen (1)
It is also sandwiched between the roller and the pressure roller (4) and is sequentially fed while being guided by the deflector (2).

そして、ディフレクタ(2)から出た用紙は、次にプラ
テン(1)の前方で補助ガイド板(6)により案内され
、ペーパーペイルローラ(7)とプラテン(1)との間
へと導かれ、プラテン(1)に巻き付はセットされる。
The paper that comes out of the deflector (2) is then guided by an auxiliary guide plate (6) in front of the platen (1) and guided between the paper pail roller (7) and the platen (1). The winding is set on the platen (1).

ところで、この種の用紙案内機構では、補助ガイド板(
6)は用紙(5)の剛性に打ち勝つ剛性としなければな
らない。9しかし、そのような剛性とすると、加工上の
制約が加わり、自由な形状の補助ガイド板とすることが
困難であった。また、その補助ガイド板(6)の加工精
度を上げることも非常に困難であった。そこで、第1図
に示すとおり、たとえばディフレクタ(2)の前方でプ
ラテン(1)と補助ガイド板(6)との間にすき間(s
)ができるのは止むを得ないことであった。このため、
従来のこの種の用紙案内機構では、たとえば用紙(5)
がディフレクタ(2)を出たところで、図中二点鎖線で
示す如くたるみを生じ、それが印字品質に悪影響を及ぼ
し、またスキューの原因となる問題点があった。
By the way, in this type of paper guide mechanism, the auxiliary guide plate (
6) must have a rigidity that overcomes the rigidity of the paper (5). 9 However, such rigidity imposes restrictions on processing, making it difficult to form an auxiliary guide plate of any desired shape. Furthermore, it has been extremely difficult to improve the machining accuracy of the auxiliary guide plate (6). Therefore, as shown in Fig. 1, for example, there is a gap (s) between the platen (1) and the auxiliary guide plate (6) in front of the deflector (2).
) was unavoidable. For this reason,
In this type of conventional paper guide mechanism, for example, paper (5)
When it exits the deflector (2), sagging occurs as shown by the two-dot chain line in the figure, which has a negative effect on print quality and causes skew.

1−一蝮 そこで、この発明は、そのような従来の問題点を解消す
ることを目的とする。そのため、この発明にあっては、
プリンタ等の印字装置の上記用紙案内機構において、用
紙をプラテンに確実に密着させ、用紙のたるみに起因す
る印字品質の低下やスキューの発生を完全に防止せんと
するものである。
1-1 Therefore, the present invention aims to solve such conventional problems. Therefore, in this invention,
The paper guiding mechanism of a printing device such as a printer is intended to ensure that the paper is in close contact with the platen, and to completely prevent deterioration in print quality and occurrence of skew due to sagging of the paper.

碧ニーー腹 以下、図面に示すこの発明の実施例にしたがい、この発
明につき詳細に説明する。
BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, this invention will be described in detail according to embodiments of the invention shown in the drawings.

第2図には、この発明による用紙案内機構の一例を示す
。第2図に示す用紙案内機構は第1図に示すそれとほと
んど同一であり、対応部分には第1図で使用した符号を
そのまま使用して説明を省略する。第2図に示す用紙案
内機構において第1図に示すそれと相違する点は、プラ
テン(1)と補助ガイド板(6)との間のすき間(s)
にサブ補助ガイド板(10)を設けることである。この
サブ補助ガイド板(10)は、図示実施例ではポリエス
テルフィルムなど、剛性が低くかつ摩擦抵抗の低い材料
でつくり、基端が補助ガイド板(6)に固着され、自然
状態では第3図に示すように支持される。ところが、用
紙(5)をセットするとき、第2図に示す如く補助ガイ
ド板(6)がプラテン(1)と対向すると、サブ補助ガ
イド板(10)がプラテン(1)に接触して図示する如
くたわみを生ずることとなる。そして、用紙(5)をプ
ラテン(1)に確実に密着させる。
FIG. 2 shows an example of a paper guide mechanism according to the present invention. The paper guide mechanism shown in FIG. 2 is almost the same as that shown in FIG. 1, and corresponding parts are given the same reference numerals as in FIG. 1, and their explanation will be omitted. The paper guide mechanism shown in FIG. 2 is different from that shown in FIG. 1 because of the gap (s) between the platen (1) and the auxiliary guide plate (6).
A sub auxiliary guide plate (10) is provided in the auxiliary guide plate (10). In the illustrated embodiment, the sub-auxiliary guide plate (10) is made of a material with low rigidity and low frictional resistance, such as polyester film, and its base end is fixed to the auxiliary guide plate (6), as shown in FIG. Supported as shown. However, when setting the paper (5), when the auxiliary guide plate (6) faces the platen (1) as shown in FIG. This will cause deflection. Then, the paper (5) is securely brought into close contact with the platen (1).

第2図および第3図に示す実施例では、用紙(5)をセ
ットするとき、サブ補助ガイド板(10)がプラテン(
1)に接触する場合を示した。しかし、第4図に示すと
おり、用紙(12)をセットするときにも、サブ補助ガ
イド板(14)がプラテン(16)に接触しないように
補助ガイド板(18)で支持してもよい。このようなサ
ブ補助ガイド板(14)でも、プラテン(16)と補助
ガイド板(1B)との間のすき間(s)で用紙(12)
がたわみを生じないように、該用紙(12)を案内する
ことができる。
In the embodiment shown in FIGS. 2 and 3, when setting the paper (5), the sub auxiliary guide plate (10) is attached to the platen (
1) shows the case of contact. However, as shown in FIG. 4, even when setting the paper (12), the sub-auxiliary guide plate (14) may be supported by the auxiliary guide plate (18) so that it does not come into contact with the platen (16). Even with such a sub-auxiliary guide plate (14), the paper (12) is
The paper (12) can be guided so that it does not bend.

この発明による用紙案内機構は、プリンタ・プロッタ・
タイプライタ等の印字装置にあって、倶給された用紙を
プラテンに巻き付はセットするとき、まず用紙をディフ
レクタで案内し、該ディフレクタを出た用紙を次に補助
ガイド板でプラテンとペーパーペイルローラとの間へと
導くすべての用紙案内機構に適用することができ、特に
用紙のオートセット機構を備える印字装置において用紙
のたるみの発生を防止するため有用である。
The paper guide mechanism according to this invention can be used for printers, plotters, etc.
When winding and setting fed paper around a platen in a printing device such as a typewriter, the paper is first guided by a deflector, and the paper that comes out of the deflector is then guided between the platen and the paper pail by an auxiliary guide plate. The present invention can be applied to all paper guide mechanisms that guide paper between rollers, and is particularly useful for preventing paper from sagging in printing devices equipped with a paper auto-setting mechanism.

肱−一米 この発明によれば、ディフレクタを出た用紙はサブ補助
ガイド板で案内され、さらに補助ガイド板で案内されて
、プラテンとペーパーペイルローラとの間に導かれるこ
ととなる。したがって、用紙がプリンタに確実に密着さ
れてセットされ、プラテンと補助ガイド板とのすき間で
たわみを生ずる虞れは全くなくなる。よって、それに起
因する印字品質の低下やスキューの発生を皆無とするこ
とができる。また、サブ補助ガイド板を設けることによ
り、補助ガイド板形状の自由度をいくらか増し、その加
工性を高め、寸法精度を向上することができる利点があ
る。
According to this invention, the paper exiting the deflector is guided by the sub-auxiliary guide plate, further guided by the auxiliary guide plate, and guided between the platen and the paper pail roller. Therefore, the paper is set in the printer in close contact with the printer, and there is no possibility that the paper will bend in the gap between the platen and the auxiliary guide plate. Therefore, any deterioration in print quality or occurrence of skew caused by this can be completely eliminated. Further, by providing the sub-auxiliary guide plate, there is an advantage that the degree of freedom in the shape of the auxiliary guide plate is increased to some extent, its workability is improved, and dimensional accuracy can be improved.

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

第1図は、従来の用紙案内機構を説明する説明図である
。第2図は、この発明の一実施例である用紙案内機構を
説明する説明図である。第3図は、その補助ガイド板へ
のサブ補助ガイド板の取付を説明する説明図である。第
4図は、この発明の他の実施例である用紙案内機構を説
明する説明図である。 (・1)・(16)・・・・・・・・・プラテン(2)
・・・・・・・・・ディフレクタ(5)・(12)・・
・・・・・・・用紙(6)・(18)・・・・・・・・
・補助ガイド板(7)・・・・・・・・・ペーパーペイ
ルローラ(10)・(14)・・・・・・・・・サブ補
助ガイド板(s)・・・・・・・・・すき間 特許出願人 株式会社リコー 代理人弁理士 中 尾 俊 介 第1図
FIG. 1 is an explanatory diagram illustrating a conventional paper guide mechanism. FIG. 2 is an explanatory diagram illustrating a paper guide mechanism that is an embodiment of the present invention. FIG. 3 is an explanatory diagram illustrating the attachment of the sub-auxiliary guide plate to the auxiliary guide plate. FIG. 4 is an explanatory diagram illustrating a paper guide mechanism according to another embodiment of the present invention. (・1)・(16)・・・・・・Platen (2)
・・・・・・・・・Deflector (5)・(12)・・
・・・・・・Paper (6)・(18)・・・・・・・・・
・Auxiliary guide plate (7)・・・・・・Paper pail roller (10)・(14)・・・・・・Sub auxiliary guide plate (s)・・・・・・・・・・Gap patent applicant: Shunsuke Nakao, patent attorney for Ricoh Co., Ltd. Figure 1

Claims (1)

【特許請求の範囲】[Claims] 供給される用紙をプラテンに沿って配置したディフレク
タで案内し、さらにそのディフレクタから出た用紙を補
助ガイド板で案内し、前記プラテンとペーパーペイルロ
ーラとの間へと導く印字装置において、前記プラテンと
前記補助ガイド板との間のすき間にサブ補助ガイド板を
設け、そのサブ補助ガイド板を前記補助ガイド板で支持
してなる印字装置の用紙案内機構。
In the printing device, the paper to be supplied is guided by a deflector arranged along the platen, and the paper coming out of the deflector is further guided by an auxiliary guide plate to be guided between the platen and the paper pail roller. A paper guide mechanism for a printing device, wherein a sub-auxiliary guide plate is provided in a gap between the sub-auxiliary guide plate and the sub-auxiliary guide plate is supported by the auxiliary guide plate.
JP2035284A 1984-02-07 1984-02-07 Paper guide mechanism for printer Pending JPS60165276A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2035284A JPS60165276A (en) 1984-02-07 1984-02-07 Paper guide mechanism for printer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2035284A JPS60165276A (en) 1984-02-07 1984-02-07 Paper guide mechanism for printer

Publications (1)

Publication Number Publication Date
JPS60165276A true JPS60165276A (en) 1985-08-28

Family

ID=12024721

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2035284A Pending JPS60165276A (en) 1984-02-07 1984-02-07 Paper guide mechanism for printer

Country Status (1)

Country Link
JP (1) JPS60165276A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2612840A1 (en) * 1987-03-23 1988-09-30 Seiko Epson Corp PRINTER
DE3818167A1 (en) * 1988-05-26 1989-11-30 Mannesmann Ag DEVICE FOR THE TRANSPORT OF RECORD CARRIERS IN OFFICE MACHINES, ESPECIALLY FOR RECEIPT IN RECEIPT PROCESSING DEVICES
EP0420400A2 (en) * 1989-09-29 1991-04-03 Hewlett-Packard Company Printer medium drive clearance eliminator
US5152622A (en) * 1989-12-14 1992-10-06 Hewlett-Packard Company Printer with improved anti-skew mechanisms
US5269506A (en) * 1992-09-29 1993-12-14 Hewlett-Packard Company Paper pick-up system for printers
EP1588856A1 (en) * 2003-01-31 2005-10-26 Wedg Co. Ltd Image recorder

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2612840A1 (en) * 1987-03-23 1988-09-30 Seiko Epson Corp PRINTER
US5026185A (en) * 1987-03-23 1991-06-25 Seiko Epson Corporation Printer with adjustable pressing plate
DE3818167A1 (en) * 1988-05-26 1989-11-30 Mannesmann Ag DEVICE FOR THE TRANSPORT OF RECORD CARRIERS IN OFFICE MACHINES, ESPECIALLY FOR RECEIPT IN RECEIPT PROCESSING DEVICES
EP0420400A2 (en) * 1989-09-29 1991-04-03 Hewlett-Packard Company Printer medium drive clearance eliminator
US5152622A (en) * 1989-12-14 1992-10-06 Hewlett-Packard Company Printer with improved anti-skew mechanisms
US5269506A (en) * 1992-09-29 1993-12-14 Hewlett-Packard Company Paper pick-up system for printers
EP1588856A1 (en) * 2003-01-31 2005-10-26 Wedg Co. Ltd Image recorder
EP1588856A4 (en) * 2003-01-31 2008-03-05 Wedg Co Ltd Image recorder

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