JPH0130632B2 - - Google Patents
Info
- Publication number
- JPH0130632B2 JPH0130632B2 JP55161160A JP16116080A JPH0130632B2 JP H0130632 B2 JPH0130632 B2 JP H0130632B2 JP 55161160 A JP55161160 A JP 55161160A JP 16116080 A JP16116080 A JP 16116080A JP H0130632 B2 JPH0130632 B2 JP H0130632B2
- Authority
- JP
- Japan
- Prior art keywords
- platen
- medium
- friction roller
- leading edge
- amount
- 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.)
- Expired
Links
- 238000000034 method Methods 0.000 claims description 12
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
Landscapes
- Handling Of Sheets (AREA)
- Handling Of Cut Paper (AREA)
- Delivering By Means Of Belts And Rollers (AREA)
Description
【発明の詳細な説明】
この発明は、単票媒体の挿入がプラテンの後方
より行われ、プラテン前面の印字ヘツドの上方に
設けられたフリクシヨンローラによつてこの単票
媒体を保持したあと印字処理が行われる形式のプ
リンタにおける媒体の頭出し方法に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION According to the present invention, the cut medium is inserted from the rear of the platen, and the cut medium is held by a friction roller provided above the printing head on the front surface of the platen, and then printed. The present invention relates to a method for locating the beginning of a medium in a type of printer in which processing is performed.
このような形式のプリンタの一構造例が第１図
に示されており、図中、１はプラテン、２は印字
ヘツド、３はホツパ台、４はホツパ台３上に積層
して載置された単票媒体、５は単票媒体４を分離
供給するためのピツクローラ、６は供給される単
票媒体４ａの先端辺を検出するセンサ、７はプラ
テン１との間で供給された媒体を挾持して印字部
へと送り込むフリクシヨンローラ、８は印字ヘツ
ド２の上方で送り込まれた媒体４ａを挾持するた
めのフリクシヨンローラ、９は支点ピン１０によ
つて不動部材に枢着された揺動腕、１１はソレノ
イド、１２はソレノイド１１のプランジヤと揺動
腕９を連結するロツド、１３は引張バネ、１４，
１５は媒体案内板である。フリクシヨンローラ８
は、揺動腕９の上端に軸着されており、ソレノイ
ド１１および引張バネ１３の作用によりプラテン
１に対して圧接離隔自在となつている。 An example of the structure of this type of printer is shown in FIG. 1, in which 1 is a platen, 2 is a print head, 3 is a hopper stand, and 4 is stacked on the hopper stand 3. 5 is a pick crawler for separating and feeding the cut medium 4; 6 is a sensor for detecting the leading edge of the fed cut medium 4a; 7 is a sensor for clamping the fed medium with the platen 1; 8 is a friction roller for holding the medium 4a sent above the printing head 2, and 9 is a swinging roller pivotally connected to a stationary member by a fulcrum pin 10. Arm, 11 is a solenoid, 12 is a rod connecting the plunger of the solenoid 11 and the swinging arm 9, 13 is a tension spring, 14,
15 is a medium guide plate. frixion roller 8
is pivotally attached to the upper end of the swinging arm 9, and can be pressed against and separated from the platen 1 by the action of a solenoid 11 and a tension spring 13.
このようなプリンタにおける従来の媒体給送手
順が第２図にフローチヤートで示されている。媒
体４ａの供給がセンサ６によつて検出されるとプ
ラテン１は予め設定されている量だけ回転して供
給された媒体４ａの先端がフリクシヨンローラ８
の上方に達するまで媒体４ａを給送し、ソレノイ
ド１１の励磁が解かれて媒体４ａの先端部がフリ
クシヨンローラ８とプラテン１とによつて挾持さ
れて媒体４ａの頭出しが完了する。そしてこの状
態で第１行の印字が行われ、プラテンの間欠回転
による行送りと印字動作とが繰返されて印字が終
了したあとプラテン１の連続回転によつて媒体４
ａがプラテン１の上方へと排出され、ソレノイド
１１が励磁されてフリクシヨンローラ８がプラテ
ン１から離隔して次に供給される媒体を待機す
る。 A conventional media feeding procedure in such a printer is shown in flowchart form in FIG. When the supply of the medium 4a is detected by the sensor 6, the platen 1 rotates by a preset amount, and the tip of the supplied medium 4a is moved to the friction roller 8.
The medium 4a is fed until it reaches the upper part of the medium 4a, the solenoid 11 is deenergized, the leading end of the medium 4a is held between the friction roller 8 and the platen 1, and the cueing of the medium 4a is completed. In this state, printing of the first line is performed, and after the line feeding and printing operation are repeated by intermittent rotation of the platen, and after the printing is completed, the continuous rotation of the platen 1 causes the medium 4 to be printed.
a is discharged above the platen 1, the solenoid 11 is energized, and the friction roller 8 is separated from the platen 1 and waits for the next medium to be supplied.
この場合、媒体４ａの第１印字行の位置は、セ
ンサ６が媒体４ａの先端辺を検出した後のプラテ
ン１の設定送り量によつて決定されるのである
が、送り込まれた媒体４ａの先端部をフリクシヨ
ンローラ８とプラテン１とで確実に挾持するため
には、媒体４ａの先端辺がフリクシヨンローラ８
の上方に充分送り出されたあとフリクシヨンロー
ラ８をプラテン１に圧接させてやる必要がある。
このために、第３図に示すように、媒体４ａの先
端辺４ｂと第１行の印字位置16との間Ａが広くな
り、印字可能範囲がそれだけ制約されることにな
る。 In this case, the position of the first print line on the medium 4a is determined by the set feeding amount of the platen 1 after the sensor 6 detects the leading edge of the medium 4a. In order to securely hold the media 4a between the friction roller 8 and the platen 1, the leading edge of the medium 4a must be held by the friction roller 8.
It is necessary to bring the friction roller 8 into pressure contact with the platen 1 after it has been sent sufficiently upward.
For this reason, as shown in FIG. 3, the distance A between the leading edge 4b of the medium 4a and the printing position 16 of the first line becomes wider, and the printable range is restricted accordingly.
この発明は、このような印字範囲の制約を取除
くことを目的としてなされたものであつて、フリ
クシヨンローラ８が媒体４ａの先端部を挾持した
あとプラテン１を逆転させて媒体４ａの先端辺４
ｂをフリクシヨンローラ８とプラテン１との接触
線近くにまで送り戻すようにし、このプラテン１
の逆転によつて発生する虞のあるプラテン１駆動
系のバツクラツシユに起因する送り誤差を補正す
る方法を提供しようとするものである。 This invention was made with the aim of removing such restrictions on the printing range. After the friction roller 8 clamps the leading edge of the medium 4a, the platen 1 is reversed to print the leading edge of the medium 4a. 4
b is sent back to near the contact line between the friction roller 8 and the platen 1, and this platen 1
The present invention aims to provide a method for correcting a feed error caused by a backlash in the platen 1 drive system that may occur due to the reverse rotation of the platen 1.
第４図ないし第６図は、この発明の方法が採用
されるプリンタの構造および作動を例示する図で
あつて、図中、第１図と同一の符号を付したもの
は第１図のものと同一の部材を示しており、４ｂ
は第３図に示す媒体４ａ先端辺の、１７はプラテ
ン軸１８に固着されたスリツト円板、１９はその
スリツト、２０はスリツト１９を検出するための
センサ、２１はフリクシヨンローラ８の上部で媒
体４ａの先端辺４ｂを検出するためのセンサであ
る。 4 to 6 are diagrams illustrating the structure and operation of a printer in which the method of the present invention is adopted, and in the figures, the same reference numerals as in FIG. 1 refer to those in FIG. 1. shows the same member as 4b
3, 17 is a slit disk fixed to the platen shaft 18, 19 is the slit, 20 is a sensor for detecting the slit 19, and 21 is the upper part of the friction roller 8. This is a sensor for detecting the leading edge 4b of the medium 4a.
第７図は、第４図ないし第６図に示した構造を
有するプリンタにおける単票媒体給送手順の一実
施例を示すフローチヤートであつて、フリクシヨ
ンローラ８をプラテン１から離隔させて状態でプ
ラテン１を正方向（第４図ないし第６図上右回
り）に回転させて先端辺４ｂがセンサ２１の位置
に達するまで媒体４ａを送り込む第１操作Ｂと、
ソレノイド１１の励磁を解いてフリクシヨンロー
ラ８をプラテン１に圧接させて媒体４ａの先端部
を挾持する第２操作Ｃと、プラテン１を設定量だ
け逆転させて媒体４ａの先端辺４ｂをフリクシヨ
ンローラ８とプラテン１との圧接位置直近にまで
送り戻すとともにプラテン駆動電動機に与えられ
た駆動パルス数とセンサ２０で検出されたパルス
数からプラテン駆動系のバツクラツシユに相当す
る補正値を算出してこのバツクラツシユ量だけプ
ラテン駆動用電動機を補正駆動する第３操作Ｄと
によつて媒体４ａの頭出しが行われている。ステ
ツプ24のプリンタ１の逆転量の判定は、予め設定
された設定値とステツプ25によつてカウントされ
たセンサ２０の出力パルス数とを比較することに
よつて行われる。そして第３操作Ｄの最後に行わ
れる補正駆動２２は、ステツプ23によつて算出さ
れたプラテン駆動系のバツクラツシユに相当する
補正量だけプラテン駆動用電動機を正方向に回転
させる操作であつて、この駆動量は当然駆動系の
バツクラツシユによつて吸収され、プラテン１は
回転しない。第４図、第５図および第６図は、こ
の第１操作Ｂ、第２操作Ｃおよび第３操作Ｄが終
了したときにおけるプリンタの状態を示すもので
ある。 FIG. 7 is a flow chart showing an embodiment of the cut medium feeding procedure in the printer having the structure shown in FIGS. 4 to 6, and shows a state in which the friction roller 8 is separated from the platen 1. a first operation B in which the platen 1 is rotated in the forward direction (clockwise in FIGS. 4 to 6) and the medium 4a is fed until the leading edge 4b reaches the position of the sensor 21;
A second operation C in which the solenoid 11 is deenergized and the friction roller 8 is brought into pressure contact with the platen 1 to clamp the leading end of the medium 4a, and the platen 1 is reversed by a set amount to frictionally clamp the leading edge 4b of the medium 4a. The roller 8 and the platen 1 are fed back to the position where they are pressed against each other, and a correction value corresponding to the backlash of the platen drive system is calculated from the number of drive pulses given to the platen drive motor and the number of pulses detected by the sensor 20. The beginning of the medium 4a is performed by the third operation D, which corrects and drives the platen driving motor by the amount of backlash. The amount of reverse rotation of the printer 1 is determined in step 24 by comparing a preset value with the number of output pulses from the sensor 20 counted in step 25. The correction drive 22 performed at the end of the third operation D is an operation of rotating the platen drive motor in the forward direction by a correction amount corresponding to the backlash of the platen drive system calculated in step 23. The amount of drive is naturally absorbed by the backlash of the drive system, and the platen 1 does not rotate. FIGS. 4, 5, and 6 show the state of the printer when the first operation B, second operation C, and third operation D are completed.
ステツプ22の補正駆動は、プラテン１を逆転さ
せたために生ずるバツクラツシユの影響によつて
第１印字行と第２印字行との間隔が設定された行
間隔より狭くなつてしまうのを避けるために行わ
れるものであり、従つて、この補正駆動２２は、
第１行の印字が行われたあと媒体４ａを第２行目
へ行送りするときに行うようにしてもよい。第８
図はこのようにした場合の操作手順を示すフロー
チヤートであつて、補正駆動のステツプ22は、第
１行目の印字動作２６のあとに行われている。ス
テツプ27は媒体４ａに対する印字処理が第１行の
印字のみであるかどうかの判定であつて、第２行
目以下に印字すべき情報がない場合には、この補
正送りを行わないで媒体４ａを排出することがで
きることを示している。 The correction drive in step 22 is performed in order to prevent the interval between the first print line and the second print line from becoming narrower than the set line interval due to the effect of backlash caused by reversing the platen 1. Therefore, this correction drive 22 is
This may be performed when the medium 4a is fed to the second line after the first line has been printed. 8th
The figure is a flowchart showing the operating procedure in this case, and the correction drive step 22 is performed after the printing operation 26 for the first line. In step 27, it is determined whether the printing process on the medium 4a is only printing on the first line.If there is no information to be printed on the second line or below, this correction feed is not performed and the printing process is performed on the medium 4a. This shows that it is possible to emit
上述のようなこの発明の方法によつて媒体４ａ
の頭出しを行えば、媒体の先端辺４ｂをフリクシ
ヨンローラ８とプラテン１の接触線直近に位置さ
せた状態で第１行目の印字を行うことができ、第
３図に示す媒体の先端辺４ｂと第１行目の印字位
置16との間隔Ａを印字ヘツド２の先端とフリクシ
ヨンローラ８との間隔にまで短縮することがで
き、媒体上の印字可能領域を広くとることができ
ることとなる。 By the method of the invention as described above, the medium 4a
By positioning the leading edge of the medium as shown in FIG. The distance A between the side 4b and the printing position 16 of the first line can be shortened to the distance between the tip of the print head 2 and the friction roller 8, and the printable area on the medium can be widened. Become.
第１図はプリンタの構造を示す側面図、第２図
は第１図のプリンタにおける従来の媒体給送手順
を示すフローチヤート、第３図は印字された単票
媒体を示す部分平面図、第４図ないし第６図はこ
の発明に係る頭出し方法を採用したプリンタの構
造およびその作動の一例を示す側面図であつて、
第４図は第１操作終了時の状態を、第５図は第２
操作終了時の状態を、第６図は第３操作終了時の
状態をそれぞれ示すものである。第７図および第
８図はこの発明の第１および第２実施例を示すフ
ローチヤートである。なお、第８図におけるステ
ツプ23に先行する操作は、第７図示のものと同一
であるので、省略されている。
図中、１はプラテン、２は印字ヘツド、３はホ
ツパ台、４ｂは媒体の先端辺、５はピツクロー
ラ、８はフリクシヨンローラ、９は揺動腕、１０
は支点ピン、１１はソレノイド、１３は引張バ
ネ、１７はスリツト円板、２０，２１はセンサ、
Ｂは第１操作、Ｃは第２操作、Ｄは第３操作であ
る。
FIG. 1 is a side view showing the structure of the printer, FIG. 2 is a flowchart showing the conventional media feeding procedure in the printer of FIG. 1, FIG. 3 is a partial plan view showing printed paper, and 4 to 6 are side views showing an example of the structure and operation of a printer employing the cueing method according to the present invention,
Figure 4 shows the state at the end of the first operation, and Figure 5 shows the state at the end of the second operation.
The state at the end of the operation is shown in FIG. 6, and FIG. 6 shows the state at the end of the third operation. FIGS. 7 and 8 are flowcharts showing first and second embodiments of the present invention. Note that the operations preceding step 23 in FIG. 8 are the same as those shown in FIG. 7, and are therefore omitted. In the figure, 1 is the platen, 2 is the print head, 3 is the hopper stand, 4b is the leading edge of the medium, 5 is the pick roller, 8 is the friction roller, 9 is the swing arm, 10
is a fulcrum pin, 11 is a solenoid, 13 is a tension spring, 17 is a slit disk, 20 and 21 are sensors,
B is the first operation, C is the second operation, and D is the third operation.
Claims (1)
設けられたフリクシヨンローラを離隔させた状態
でプラテンの後方より単票媒体を供給する第１操
作と、前記フリクシヨンローラをプラテンに圧接
させて供給された単票媒体の先端部を挾持する第
２操作と、プラテンを逆転させて挾持した単票媒
体の先端辺をフリクシヨンローラとプラテンとの
圧接位置直近にまで送り戻す第３操作とからな
る、プリンタにおける単票媒体の頭出し方法。 ２ 特許請求の範囲第１項記載の第３操作にはプ
ラテン駆動用電動機に与えられた逆転駆動信号量
とプラテンの実際の逆転量とからプラテン駆動系
のバツクラツシユ量を検出する操作が含まれてい
る、特許請求の範囲第１項記載の単票媒体の頭出
し方法。[Scope of Claims] 1. A first operation of supplying a cut medium from behind the platen in a state in which a friction roller, which is provided in a manner such that it can be pressed against and separated from the platen directly above the printing position, is separated from the platen; A second operation of clamping the leading edge of the cut medium supplied while being pressed against the platen, and reversing the platen to send the leading edge of the clamped cut medium back to the position immediately adjacent to the pressure contact position between the friction roller and the platen. A method for cueing a cut medium in a printer, comprising a third operation. 2. The third operation described in claim 1 includes an operation of detecting the backlash amount of the platen drive system from the amount of the reverse drive signal applied to the platen drive electric motor and the actual amount of reverse rotation of the platen. A method for cuing up a single sheet medium according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16116080A JPS5784885A (en) | 1980-11-14 | 1980-11-14 | Leading-end protruding method for slip form medium in printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16116080A JPS5784885A (en) | 1980-11-14 | 1980-11-14 | Leading-end protruding method for slip form medium in printer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5784885A JPS5784885A (en) | 1982-05-27 |
| JPH0130632B2 true JPH0130632B2 (en) | 1989-06-21 |
Family
ID=15729729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16116080A Granted JPS5784885A (en) | 1980-11-14 | 1980-11-14 | Leading-end protruding method for slip form medium in printer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5784885A (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1155264B (en) * | 1982-02-03 | 1987-01-28 | Olivetti & Co Spa | DOCUMENT INTRODUCER |
| JPS6031983A (en) * | 1983-07-30 | 1985-02-18 | Pentel Kk | Paper feed controlling system for printer |
| JPS60130052U (en) * | 1984-02-10 | 1985-08-31 | 富士通株式会社 | printing device |
| JPS60168678A (en) * | 1984-02-13 | 1985-09-02 | Oki Electric Ind Co Ltd | Paper-feeding system for printer |
| US4714364A (en) * | 1984-08-10 | 1987-12-22 | Ricoh Company, Ltd. | Automatically returned paper ball assembly of a printer |
| EP0173139A1 (en) * | 1984-08-31 | 1986-03-05 | Kabushiki Kaisha Toshiba | Printing apparatus |
| JPS6158775A (en) * | 1984-08-31 | 1986-03-26 | Toshiba Corp | Printer |
| JPS6178676A (en) * | 1984-09-26 | 1986-04-22 | Tokyo Electric Co Ltd | Printer |
| JPH0684090B2 (en) * | 1984-11-06 | 1994-10-26 | 株式会社リコー | Printer |
| US4761087A (en) * | 1985-11-12 | 1988-08-02 | Genicom Corporation | Printer with automatic printed paper advancement to tear-off position and subsequent retraction to new first print line |
| JPS62162041U (en) * | 1986-04-03 | 1987-10-15 | ||
| JPS63134270A (en) * | 1986-11-26 | 1988-06-06 | Alps Electric Co Ltd | Paper feed controlling method for printer |
| JPH0815802B2 (en) * | 1987-03-06 | 1996-02-21 | 株式会社テック | Printer paper setting method |
| US4961658A (en) * | 1987-06-15 | 1990-10-09 | Brother Kogyo Kabushiki Kaisha | Feed roller release due to carriage movement in a printing apparatus |
| JP2717137B2 (en) * | 1990-05-18 | 1998-02-18 | セイコープレシジョン株式会社 | Printing device |
| EP0530777B1 (en) * | 1991-09-03 | 1997-04-09 | Canon Kabushiki Kaisha | Sheet conveying apparatus |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS533207A (en) * | 1976-06-29 | 1978-01-12 | Hitachi Ltd | Head loading apparatus |
| JPS54156718A (en) * | 1978-05-30 | 1979-12-11 | Ricoh Kk | Method of automatically supplying paper for printer |
| JPS55126470A (en) * | 1979-03-26 | 1980-09-30 | Ricoh Co Ltd | Automatic mounting device for printing paper |
| JPS5640576A (en) * | 1979-09-11 | 1981-04-16 | Ricoh Co Ltd | Sheet setting method for automatic sheet feeder in printer |
-
1980
- 1980-11-14 JP JP16116080A patent/JPS5784885A/en active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS533207A (en) * | 1976-06-29 | 1978-01-12 | Hitachi Ltd | Head loading apparatus |
| JPS54156718A (en) * | 1978-05-30 | 1979-12-11 | Ricoh Kk | Method of automatically supplying paper for printer |
| JPS55126470A (en) * | 1979-03-26 | 1980-09-30 | Ricoh Co Ltd | Automatic mounting device for printing paper |
| JPS5640576A (en) * | 1979-09-11 | 1981-04-16 | Ricoh Co Ltd | Sheet setting method for automatic sheet feeder in printer |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5784885A (en) | 1982-05-27 |
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