JPH0459521A - Feed sheet tray for printer - Google Patents

Feed sheet tray for printer

Info

Publication number
JPH0459521A
JPH0459521A JP17004490A JP17004490A JPH0459521A JP H0459521 A JPH0459521 A JP H0459521A JP 17004490 A JP17004490 A JP 17004490A JP 17004490 A JP17004490 A JP 17004490A JP H0459521 A JPH0459521 A JP H0459521A
Authority
JP
Japan
Prior art keywords
roller
print sheet
paper
sheet
print
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
JP17004490A
Other languages
Japanese (ja)
Inventor
Yoichi Narui
成井 陽一
Seiji Okumiya
奥宮 誠司
Masashi Yoshida
雅志 吉田
Masami Takada
正美 高田
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP17004490A priority Critical patent/JPH0459521A/en
Publication of JPH0459521A publication Critical patent/JPH0459521A/en
Pending legal-status Critical Current

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  • Handling Of Cut Paper (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)

Abstract

PURPOSE:To prevent the simultaneous feed of a lowermost print sheet without needing a discriminating means for a special protection sheet and a print sheet by a method wherein a friction force generated between print sheets is made approximately equivalent to a friction force generated between the print sheet and a print sheet support surface. CONSTITUTION:In a sheet feed state, an elevating plate 3 is rotated to force a print sheet 1 into pressure adhesion to a pickup roller 5. Thereby, the print sheet 1 forced into contact with the roller 5 is fed to a feed roller 9 by means of the roller 5 and conveyed to a printing mechanism. When a print sheet 1a next to a lowermost sheet is fed, the print sheet 1b is about to be fed in a double feed state to the roller 9 by the print sheet 1a by means of a friction force P1 between the image receiving surface of the print sheet and the reverse image receiving surface of the lowermost print sheet 1b. However, the recording sheet 1b is hard to be fed in a double feed state by means of a friction force (f) between the lowermost print sheet and a friction member 4 located to the elevating plate 3. The friction force (f) at the friction member 4 is worked so as to assist a separating force at a separation roller 14, and there is no need to increase the pressure adhesion force and rotation torque of the separation roller by which the generation of the roller mark of the image receiving surface is caused.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明はプリント紙の連続供給を可能としたプリンタ用
給紙トレーに関する。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a paper feed tray for a printer that allows continuous supply of print paper.

〔従来の技術〕[Conventional technology]

従来の装置は、例えば特開平1−249493号公報に
記載のように、プリンタ内の印字部に最上位より順次給
紙される複数枚積み重ねられたプリント紙の最下位のプ
リント紙のプリント面を、該プリント紙の形状と略同形
状で、且つ給紙の禁止を示す情報を有した保護シートを
用い、最下位から2番目のプリント紙を印字部に給紙す
る際に最下位のプリント紙との同時給紙を防止するよう
になっていた。
For example, as described in Japanese Patent Application Laid-Open No. 1-249493, a conventional device prints the printed surface of the lowest printed sheet of a plurality of stacked sheets of printed paper that are sequentially fed into a printing unit in a printer from the topmost sheet. , using a protective sheet that has approximately the same shape as the print paper and has information indicating that paper feeding is prohibited, when feeding the second print paper from the bottom to the printing unit, the bottom print paper It was designed to prevent simultaneous paper feeding with

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

上記従来技術は、プリントの禁止を示す情報を有する特
殊な保護紙を必要とし1通常のプリント紙とは異なる印
刷を加えることにより、プリント紙のコスト増加につな
がるとともに、装置自身もプリントの可否を判別する為
の手段を必要としコスト増となりまたプリント紙を標準
化する上でも不便なものとなっていた。
The above conventional technology requires special protective paper that has information indicating that printing is prohibited.1 By adding printing that is different from normal printing paper, it leads to an increase in the cost of printing paper, and the device itself also controls whether or not printing is possible. This requires a means for discrimination, which increases costs and makes it inconvenient to standardize printing paper.

また使用上においても、用紙の交換や補充の際に誤って
廃棄してしまったり、その装着位置を間違えると連続プ
リントの途中で停止してしまう等の不具合点があった。
In addition, there have been problems in use, such as incorrectly discarding the paper when replacing or replenishing the paper, or stopping in the middle of continuous printing if the paper is installed in the wrong position.

本発明の目的は、上記従来の欠点をなくし、特殊な保護
紙やプリント紙の判別手段を必要とせず。
The object of the present invention is to eliminate the above-mentioned conventional drawbacks and eliminate the need for special protective paper or printed paper discrimination means.

最下位のプリント紙の同時給紙を防止できるプリンタ用
給紙トレーを提供することにある。
To provide a paper feed tray for a printer that can prevent simultaneous feeding of the lowest print paper.

〔課題を解決するための手段〕[Means to solve the problem]

上記目的を達成する為に、プリント紙を載置するプリン
ト紙受は面の全て、または少なくともプリント紙駆動部
材により直接駆動される部分以外の面を、前記プリント
紙同士の間に発生する摩擦力と、該プリント紙と前記プ
リント紙受は面の間に発生する摩擦力がほぼ等価となる
ような部材にて構成することとした。
In order to achieve the above object, the printed paper tray on which the printed paper is placed has all its surfaces, or at least the surfaces other than those directly driven by the printed paper drive member, to absorb the frictional force generated between the printed papers. The printed paper and the printed paper holder are constructed of members such that the frictional forces generated between their surfaces are approximately equal.

〔作用〕[Effect]

プリント紙受は面を、該プリント紙同士の間に発生する
摩擦力と、該プリント紙と前記プリント紙受は面の間に
発生する摩擦力がほぼ等価となるような部材にて構成し
であるので、最下位から2番目のプリント紙をプリンタ
の印字部へ給紙する際にも、最下位のプリント紙がそれ
と一緒に給紙されることがない。
The surface of the printed paper holder is constructed of a member such that the frictional force generated between the printed papers and the frictional force generated between the printed paper and the printed paper holder are approximately equal. Therefore, even when the second print sheet from the bottom is fed to the printing section of the printer, the bottom print sheet is not fed together with it.

〔実施例〕〔Example〕

以下、本発明の一実施例を第1図〜第4図を用いて説明
する。
An embodiment of the present invention will be described below with reference to FIGS. 1 to 4.

第1図〜第4図は感熱転写記録装置等に用いるプリント
紙給紙機構を示す構成図である。プリント紙1の受像面
を下向きに複数枚収納可能なトレー2には、プリント紙
1を積層する上下板3が、トレー2の一対の穴部2dに
上下板3の一対の突起部3aを回動中心として回動可能
に支持されている。上下板3のプリント紙受は面3bに
は、プリント紙1の受像面と一定の摩擦係数に持つ摩擦
部材4がプリント紙1の第1の搬送ローラであるピック
アップローラ5と接触しない位置に設けられている。前
記摩擦係数は、プリント紙1の受像面と上下板3との間
に働く摩擦力がプリント紙1の受像面と灰受像面との間
に働く摩擦力と等価又はそれ以上となるように設定され
ている。
1 to 4 are configuration diagrams showing a print paper feeding mechanism used in a thermal transfer recording device or the like. A tray 2 that can store a plurality of sheets of printed paper 1 with the image-receiving surface facing downward has upper and lower plates 3 on which the printed papers 1 are stacked, and a pair of protrusions 3a of the upper and lower plates 3 are inserted into a pair of holes 2d of the tray 2. It is rotatably supported as a center of motion. The print paper receiver of the upper and lower plates 3 is provided on the surface 3b at a position where a friction member 4 having a constant friction coefficient with the image receiving surface of the print paper 1 does not come into contact with a pickup roller 5, which is a first conveyance roller for the print paper 1. It is being The friction coefficient is set so that the frictional force acting between the image receiving surface of the printed paper 1 and the upper and lower plates 3 is equal to or greater than the frictional force acting between the image receiving surface of the printed paper 1 and the gray image receiving surface. has been done.

トレー2を装置に装填した正面概略図を第2図に示す。A schematic front view of the tray 2 loaded into the device is shown in FIG.

ピックアップローラ5は軸6に凹凸状のゴムローラが2
ケ所形成され、門型に形成されたシャーシ7間に回動可
能に軸支され、トレー2の上方に位置する所に設けられ
ている。軸6の一端には、回転駆動力を伝達するプーリ
ギヤ8が固定されている。プーリギヤ8には、駆動力を
伝達する平ベルト18を張架するプーリ部8aと歯車と
かみ合うギヤ部8bが形成されている。
The pickup roller 5 has two uneven rubber rollers on the shaft 6.
The tray 2 is rotatably supported between two gate-shaped chassis 7, and is located above the tray 2. A pulley gear 8 that transmits rotational driving force is fixed to one end of the shaft 6. The pulley gear 8 is formed with a pulley part 8a that stretches a flat belt 18 that transmits driving force, and a gear part 8b that meshes with a gear.

プリント紙1の第2の搬送ローラであるフィードローラ
9は軸10に円筒形のゴムローラが3ケ所に形成され、
シャーシ7間に回動可能に軸支されている。軸10の一
端には、回転駆動力を伝達するギヤ11が設けられ、他
方の一端にも図示しない別機構系へ駆動力を伝達する伝
達ギヤ12が設けられている。
The feed roller 9, which is the second conveyance roller for the print paper 1, has cylindrical rubber rollers formed at three locations on a shaft 10.
It is rotatably supported between chassis 7. A gear 11 for transmitting rotational driving force is provided at one end of the shaft 10, and a transmission gear 12 for transmitting the driving force to another mechanical system (not shown) is also provided at the other end.

フィードローラ9の両側ゴムローラと対向する位置に、
シャーシ7上に植立したピン15を回動中心とするアー
ム13.13’ により回転可能に構成された分離ロー
ラ14が設けられている。分離ローラ14は、軸16に
円筒形ゴムローラがフィードローラ9の両側ゴムローラ
2ケ所と略同−幅で形成され、軸16の一端には、一定
の駆動トルクを発生する図示せぬカップリング機構17
が設けられており、該カップリング機構を介して発生す
る一定摩擦回転トルクにて駆動される構成としである。
At the position facing the rubber rollers on both sides of the feed roller 9,
A separation roller 14 is provided which is rotatable by an arm 13, 13' about a pin 15 set up on the chassis 7. The separation roller 14 has a cylindrical rubber roller formed on a shaft 16 with approximately the same width as the two rubber rollers on both sides of the feed roller 9, and a coupling mechanism 17 (not shown) at one end of the shaft 16 that generates a constant driving torque.
is provided, and is configured to be driven by constant friction rotational torque generated via the coupling mechanism.

平ベルト18は、プーリギヤ8のプーリ部8aとカップ
リング機構17の間に張架されている。
The flat belt 18 is stretched between the pulley portion 8a of the pulley gear 8 and the coupling mechanism 17.

フィードローラ9のギヤ11には図示せぬプリンタ本体
のモータより回転動力が伝達され、ピックアップローラ
5には、シャーシ7に植立されたピン19に回動可能に
軸支された中継ギヤ20を介して動力が伝達される。
Rotational power is transmitted to the gear 11 of the feed roller 9 from a motor of the printer body (not shown), and the pickup roller 5 has a relay gear 20 rotatably supported by a pin 19 set on the chassis 7. Power is transmitted through the

ここでは図示せぬが、分離ローラ14はアーム13.1
3’により第4図に示す位置まで移動可能な構成となっ
ている。アーム13.13’は一対のスプリング24に
より第2図において時計方向に所定の力により布勢され
、アーム13は凸部13a部でピン15に回動可能に軸
支された分離アーム21と当接し位置規制されている。
Although not shown here, the separation roller 14 is connected to the arm 13.1.
3', it is configured to be movable to the position shown in FIG. The arms 13 and 13' are biased clockwise in FIG. 2 by a predetermined force by a pair of springs 24, and the arm 13 abuts the separation arm 21 rotatably supported on the pin 15 at the convex portion 13a. Location is restricted.

なお、アーム13′も対称な構造となっている。分離ロ
ーラ]4が第4図に示す位置まで回動した時には、スプ
リング24により所定の押圧力W2にてフィードローラ
9に圧接される。
Note that the arm 13' also has a symmetrical structure. When the separating roller 4 rotates to the position shown in FIG. 4, it is pressed against the feed roller 9 by a spring 24 with a predetermined pressing force W2.

上下板3は、分離アーム21にバネ22にて時計方向に
布勢された、リフトアーム23にて点線の位置まで移動
可能な構成となっており、この時上下板3は、バネ22
によりプリント紙1をピックアップローラ5に所定の押
圧力W□で圧着させる構成となっている。
The upper and lower plates 3 are configured to be movable to the position indicated by the dotted line by a lift arm 23 which is urged clockwise by a spring 22 on a separation arm 21. At this time, the upper and lower plates 3 are
The configuration is such that the print paper 1 is pressed against the pickup roller 5 with a predetermined pressing force W□.

次に本発明の一実施例の動作について説明する。Next, the operation of one embodiment of the present invention will be explained.

トレー2が装填された第2図、第3図の状態にて図示せ
ぬプリント釦を押すと、図示せぬ駆動部材にてリフドア
ー4232分離ローラ14が第2図において時計方向に
回動され、上下板3を介してプリント紙1をピックアッ
プローラ5に、分離ローラ14をフィードローラ9に各
々所定の圧着力により圧接される。
When the print button (not shown) is pressed in the state shown in FIGS. 2 and 3 with the tray 2 loaded, the lift door 4232 separation roller 14 is rotated clockwise in FIG. 2 by a driving member (not shown). The printed paper 1 is pressed against the pickup roller 5 via the upper and lower plates 3, and the separation roller 14 is pressed against the feed roller 9 with a predetermined pressing force.

次に図示せぬモータよりギヤ1】、中継ギヤ20、プー
リギヤ8を介して第2図において反時計方向の回転動力
がピックアップローラ5に与えられ、プリント紙1を右
方向へ搬送する。この状態を第4図に示す。リフトアー
ム23にてピックアップローラ5にプリント紙1が上下
板3を介して力W1で圧接され、ピックアップローラ5
が反時計方向に回転すると最下位から2番目のプリント
紙1aのときには、プリント紙1aに搬送力F1が働く
。最下位のプリント紙1bには、プリント紙1a、lb
間に働く摩擦力により搬送力P1と、最下位のプリント
紙1bと摩擦部材4を含む上下板3との間に働く摩擦力
fが発生する。この時搬送力P工と摩擦力fは等価とな
るように摩擦部材4の摩擦係数が設定されているため、
最下位のプリント紙1bはトレイ2内にのこり、プリン
ト紙1aのみが搬送される。もしla、lbが重送され
た場合には、フィードローラ92分離ローラ14の圧接
力W2とカップリング機構17により、プリント紙1a
に搬送力 F2.プリント紙1bに搬送力P2 と分離
力Tが各々加わるため確実にプリント紙1aのみが搬送
される。
Next, a motor (not shown) applies rotational power in the counterclockwise direction in FIG. 2 to the pickup roller 5 through the gear 1], the relay gear 20, and the pulley gear 8, thereby conveying the print paper 1 to the right. This state is shown in FIG. The print paper 1 is pressed against the pickup roller 5 by the lift arm 23 via the upper and lower plates 3 with a force W1, and the pickup roller 5
When the printing paper 1a rotates counterclockwise, a conveying force F1 acts on the printing paper 1a when it is the second printing paper 1a from the bottom. The lowest print paper 1b has print paper 1a, lb
A conveying force P1 is generated due to the frictional force acting therebetween, and a frictional force f acting between the lowermost printed paper 1b and the upper and lower plates 3 including the friction member 4 is generated. At this time, since the friction coefficient of the friction member 4 is set so that the conveyance force P and the friction force f are equivalent,
The lowest printed paper 1b remains in the tray 2, and only the printed paper 1a is conveyed. If la and lb are fed in duplicate, the printing paper 1a and lb are
Conveying force F2. Since the conveyance force P2 and the separation force T are applied to the print paper 1b, only the print paper 1a is reliably conveyed.

以上の実施例によれば、給紙状態では上下板3を1回転
したピックアツプローラ5ヘプリント紙1を圧着させる
よう回動させる。それにより、ピックアップローラ5と
当接したプリント紙1は該ピックアップローラ5により
フィードローラ9へ送られ、印画機構へと搬送される。
According to the embodiment described above, in the paper feeding state, the upper and lower plates 3 are rotated so as to press the print paper 1 onto the pick-up roller 5 which has rotated once. As a result, the print paper 1 that has come into contact with the pickup roller 5 is sent by the pickup roller 5 to the feed roller 9, and is conveyed to the printing mechanism.

最下位から2枚目のプリント紙1aを供給する際には該
プリント紙の受像面と、最下位のプリント紙1bの灰受
像面との摩擦力Pエ (Wi送力)により、最下位のプ
リント紙1bはプリント紙1aによってフィードローラ
9へ重送されようとするが、上下板3に設けられた摩擦
部材4との摩擦力fによって最下位の記録紙1bは重送
されにくくなる。また、摩擦部材4での摩擦力fは分離
ローラ14での分離力を補助するよう働くことになり、
受像面のローラ跡等の原因になる、分離ローラの圧着力
及びカップリング機構の回転トルクを上げる必要も無い
When feeding the second sheet of printed paper 1a from the bottom, the frictional force P (Wi feeding force) between the image receiving surface of the printed paper and the gray image receiving surface of the lowest printed paper 1b The print paper 1b tends to be fed in duplicate to the feed roller 9 by the print paper 1a, but the frictional force f between the friction members 4 provided on the upper and lower plates 3 makes it difficult for the lowest recording paper 1b to be fed in duplicate. Furthermore, the frictional force f at the friction member 4 acts to assist the separation force at the separation roller 14,
There is no need to increase the pressing force of the separation roller and the rotational torque of the coupling mechanism, which may cause roller marks on the image receiving surface.

〔発明の効果〕〔Effect of the invention〕

以上のように本発明によれば、上下板に摩擦部材を設け
、プリント紙を複数枚収納するトレーの最下位から2枚
目のプリント紙を給紙する際に。
As described above, according to the present invention, friction members are provided on the upper and lower plates when feeding the second sheet of printed paper from the bottom of a tray that stores a plurality of sheets of printed paper.

最下位のプリント紙との重送を防ぐことにより。By preventing double feeding with the lowest printed paper.

トレーに収納された複数枚のプリント紙を最後まで一枚
ずつ確実に印画機構へと給紙できる。
Multiple sheets of print paper stored in a tray can be reliably fed one by one to the printing mechanism until the end.

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

第1図は本発明の一実施例によるプリンタ用給紙トレー
の外観図、第2図は該トレーを記録装置に装填した状態
を示す側面図、第3図は第2図の状態を示す斜視図、第
4図は最下位から2枚目のプリント紙の給紙状態を説明
する図である。 1・・プリント紙、     2・・・トレー3・・・
上下板、       4・・摩擦部材、5・・・ピッ
クアップローラ、 9・・・フィードローラ、   14・・分離ローラ。 集 ! 図 第 図 手 続 補 正 書 (自発) 嘲耕 2 年特許願第 170044号平成 補正をする者 事件との関係
Fig. 1 is an external view of a paper feed tray for a printer according to an embodiment of the present invention, Fig. 2 is a side view showing the tray loaded in a recording device, and Fig. 3 is a perspective view showing the state shown in Fig. 2. FIG. 4 is a diagram illustrating the feeding state of the second sheet of print paper from the lowest position. 1...Print paper, 2...Tray 3...
Upper and lower plates, 4...Friction member, 5...Pickup roller, 9...Feed roller, 14...Separation roller. collection! Figure procedural amendment (voluntary) Mockery 2 year patent application No. 170044 Relationship to the Heisei amendment case

Claims (1)

【特許請求の範囲】[Claims] 1、プリント紙を複数枚重ねて装着し、プリント紙の連
続供給を可能に構成されたプリンタ用の給紙トレーにお
いて、前記プリント紙を載置するプリント紙受け面を、
該プリント紙同士の間に発生する摩擦力と、該プリント
紙と前記プリント紙受け面の間に発生する摩擦力がほぼ
等価となるような部材にて構成したことを特徴とするプ
リンタ用給紙トレー。2、請求項1において、前記部材
の少なくともプリント紙駆動部材により直接駆動される
部分を、摩擦係数の異った面に構成したことを特徴とす
るプリンタ用給紙トレー。
1. In a paper feed tray for a printer that is configured to load a plurality of sheets of printed paper one on top of the other and to enable continuous supply of printed paper, the printed paper receiving surface on which the printed paper is placed is
A paper feed for a printer, characterized in that it is constructed of a member such that the frictional force generated between the printed papers and the frictional force produced between the printed paper and the printed paper receiving surface are approximately equal. tray. 2. A paper feed tray for a printer according to claim 1, wherein at least a portion of the member that is directly driven by the print paper drive member is configured to have surfaces having different coefficients of friction.
JP17004490A 1990-06-29 1990-06-29 Feed sheet tray for printer Pending JPH0459521A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17004490A JPH0459521A (en) 1990-06-29 1990-06-29 Feed sheet tray for printer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17004490A JPH0459521A (en) 1990-06-29 1990-06-29 Feed sheet tray for printer

Publications (1)

Publication Number Publication Date
JPH0459521A true JPH0459521A (en) 1992-02-26

Family

ID=15897575

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17004490A Pending JPH0459521A (en) 1990-06-29 1990-06-29 Feed sheet tray for printer

Country Status (1)

Country Link
JP (1) JPH0459521A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020096624A1 (en) * 2018-11-09 2020-05-14 Hewlett-Packard Development Company, L.P. Fill indicator rollers for printer trays
US11465866B2 (en) 2018-11-09 2022-10-11 Hewlett-Packard Development Company, L.P. Fill indicator cams for printer trays

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020096624A1 (en) * 2018-11-09 2020-05-14 Hewlett-Packard Development Company, L.P. Fill indicator rollers for printer trays
US11453562B2 (en) 2018-11-09 2022-09-27 Hewlett-Packard Development Company, L.P. Fill indicator rollers for printer trays
US11465866B2 (en) 2018-11-09 2022-10-11 Hewlett-Packard Development Company, L.P. Fill indicator cams for printer trays

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