JPH04144764A - Paper suction mechanism for printer - Google Patents
Paper suction mechanism for printerInfo
- Publication number
- JPH04144764A JPH04144764A JP26995490A JP26995490A JPH04144764A JP H04144764 A JPH04144764 A JP H04144764A JP 26995490 A JP26995490 A JP 26995490A JP 26995490 A JP26995490 A JP 26995490A JP H04144764 A JPH04144764 A JP H04144764A
- Authority
- JP
- Japan
- Prior art keywords
- paper
- feed roller
- sensor
- edge sensor
- detects
- 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
Links
- 230000007246 mechanism Effects 0.000 title claims description 7
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Landscapes
- Handling Of Cut Paper (AREA)
- Controlling Sheets Or Webs (AREA)
- Registering Or Overturning Sheets (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、プリンタに印字媒体として単票用紙を吸入さ
せる用紙吸入機構に関し、特にページプリンタの用紙吸
入機構に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a paper suction mechanism for causing a printer to suck paper sheets as a print medium, and particularly to a paper suction mechanism for a page printer.
従来のページプリンタ用紙吸入機構は、用紙の斜行給入
を検出する手段を有していなかった。このため、用紙が
斜行して吸入された場合、印字は用紙に対して斜めにな
り、時には用紙づまりの原因にもなっていた。Conventional page printer paper suction mechanisms have no means for detecting skew feeding of paper. For this reason, if the paper is sucked in while being fed diagonally, the print will be diagonal to the paper, sometimes causing paper jams.
上述した従来のプリンタの用紙吸入機構では、用紙の斜
行吸入を検出する手段を有していながったので、用紙が
斜行して吸入された場合、印字は用紙に対して斜めにな
り、時には用紙づまりの原因にもなるという欠点があっ
た。The paper suction mechanism of the conventional printer mentioned above did not have a means to detect the skewed suction of paper, so if the paper was sucked in diagonally, the print would be slanted to the paper. However, it has the disadvantage that it sometimes causes paper jams.
本発明のプリンタの用紙吸入機構は、用紙の左側を送行
させる左側フィードローラと、用紙の右側を送行させる
右側フィードローラと、用紙の左側を送行させる左側フ
ィートローラと、用紙の左側先頭を検出する左側始端セ
ンサと、用紙の右側先頭を検出する右側始端センサと、
前記左側始端センサが用紙の左側先頭を検出して前記右
側始端センサが用紙の右側先頭を検出しない時は前記左
側フィードローラを停止させて前記右側フィードローラ
を駆動させ、前記右側始端センサが用紙の右側先頭を検
出して前記左側始端センサが用紙の左側先頭を検出しな
い時は前記右側フィードローラを停止させて前記左側フ
ィードローラを駆動させることを特徴とする。The paper suction mechanism of the printer of the present invention includes a left feed roller that feeds the left side of the paper, a right feed roller that feeds the right side of the paper, a left foot roller that feeds the left side of the paper, and detects the left top of the paper. a left side start edge sensor, a right side start edge sensor that detects the right side start of the paper,
When the left side start edge sensor detects the left side head of the paper and the right side start edge sensor does not detect the right side head of the paper, the left side feed roller is stopped and the right side feed roller is driven, and the right side start edge sensor detects the right side of the paper. The present invention is characterized in that when the left side starting edge sensor does not detect the left side leading edge of the sheet when the right side leading edge is detected, the right side feed roller is stopped and the left side feed roller is driven.
次に、本発明について図面を参照して説明する。 Next, the present invention will be explained with reference to the drawings.
第１図は本発明の一実施例の概略図である。FIG. 1 is a schematic diagram of an embodiment of the present invention.
１は用紙カセットであり、用紙２０が集積される。２．
３が同じモータを駆動源とするピックローラである。ま
た、４．５は別々のモータを駆動源とするフィードロー
ラであり、６は吸入された用紙の左端先頭を検出する始
端センサ、７は右端先頭を検出する始端センサである。1 is a paper cassette in which paper 20 is accumulated. 2.
3 is a pick roller whose driving source is the same motor. Further, 4.5 is a feed roller driven by a separate motor, 6 is a starting edge sensor that detects the leading left end of the sucked paper, and 7 is a starting edge sensor that detects the leading right end.
第２図は本実施例の上位制御部から機械系制御部に対し
て、用紙吸入要求が発行された場合の概略フローチャー
トである。FIG. 2 is a schematic flowchart when a paper suction request is issued from the higher level control section to the mechanical system control section in this embodiment.
処理９によりピックローラ２，３を回転させ用紙先頭が
フィードローラ４．５の位置に届くまで用紙２０を吸入
する。処理１０により用紙先頭が始端センサ６．７に届
くステップ数分だけフィードローラ４．５を同時に回転
する。判断１１により始端センサ６．７の状態をチエツ
クし、両方ともＯＮであれば正常に用紙２０が吸入され
たと判断し、処理１９によりフィードローラ４，５を回
転させ用紙終端が始端センサ６．７を通過した時点でフ
ィードローラ４，５を停止し、吸入動作を完了する。In process 9, the pick rollers 2 and 3 are rotated to suck in the paper 20 until the leading edge of the paper reaches the position of the feed roller 4.5. In process 10, the feed roller 4.5 is simultaneously rotated by the number of steps required for the leading edge of the paper to reach the starting edge sensor 6.7. Judgment 11 checks the state of the starting edge sensor 6.7, and if both are ON, it is determined that the paper 20 has been sucked in normally, and in process 19, the feed rollers 4 and 5 are rotated so that the end of the paper is detected by the starting edge sensor 6.7. The feed rollers 4 and 5 are stopped at the point when the suction operation is completed.
しかし、始端センサ６．７の両方がＯＮではないと判断
された場合、判断１２により始端センサ６又は始端セン
サ７がＯＮであるか判断する。ここで両方ともＯＦＦで
あると判断された場合は処理１０に戻る。又、いずれか
の始端センサ６又は７がＯＮであると判断された場合は
、用紙２０が斜行して吸入されたと判断する。この場合
、続いて判断１３又は判断１４により、どちらかのセン
サ６又は７がＯＦＦであるか検出し、センサ６がＯＦＦ
であったら用紙２０が左に斜行して吸入されたものと判
断され、処理１７及び判断１８により始端センサ６がＯ
Ｎになるまでフィードローラ４のみを１ステツプずつ回
転させる。始端センサ６がＯＮになった時点で斜行は改
善させるので処理１９によりフィートローラ４，５を同
時に回転させ、通常用紙吸入を行う、センサ７がＯＦＦ
であった場合も同様に、用紙が右に斜行して吸入された
ものとして判断され、処理１５及び判断１６により始端
センサ７がＯＮになるまでフィードローラ５のみを１ス
テツプずつ回転させることにより斜行を改善する。However, if it is determined that both of the start-end sensors 6 and 7 are not ON, it is determined in step 12 whether the start-end sensor 6 or the start-end sensor 7 is ON. If it is determined that both are OFF, the process returns to step 10. If it is determined that either the start end sensor 6 or 7 is ON, it is determined that the paper 20 has been sucked in in a skewed manner. In this case, in judgment 13 or 14, it is detected whether either sensor 6 or 7 is OFF, and sensor 6 is OFF.
If so, it is determined that the paper 20 was sucked in obliquely to the left, and as a result of processing 17 and determination 18, the starting edge sensor 6 is set to O.
Only the feed roller 4 is rotated one step at a time until it reaches N. Since the skew is improved when the start edge sensor 6 is turned ON, the foot rollers 4 and 5 are rotated at the same time in process 19 to perform normal paper suction, and the sensor 7 is turned OFF.
In this case, it is similarly determined that the paper has been sucked in obliquely to the right, and only the feed roller 5 is rotated one step at a time until the starting edge sensor 7 is turned ON in process 15 and judgment 16. Improve skew.
以上説明したように本発明は、別々のモータを駆動源と
する２つのフィードローラと２つの始端センサを有し、
両始端センサのＯＮ１０ Ｆ Ｆ状態をチエツクして両
フィールドローラを制御することにより、用紙の斜行給
入及び用紙づまりを防止することができる効果がある。As explained above, the present invention has two feed rollers and two starting end sensors each of which is driven by separate motors,
By checking the ON10FF state of both start end sensors and controlling both field rollers, it is possible to prevent skew feeding of paper and paper jams.
第１図および第２図はそれぞれ本発明の一実施例の概略
斜視図および上位制御部から機械系制御部に対して用紙
吸入要求が発行された場合の概略フローチャートである
。
１・・・用紙カセット、２．３・・・ピックローラ、４
・・・フィードローラ、５・・・フィードローラ、６・
・・始端センサ、７・・・始端センサ、８・・・用紙。FIGS. 1 and 2 are a schematic perspective view and a schematic flowchart of an embodiment of the present invention, respectively, when a paper suction request is issued from a host controller to a mechanical system controller. 1...Paper cassette, 2.3...Pick roller, 4
...Feed roller, 5...Feed roller, 6.
...Starting edge sensor, 7... Starting edge sensor, 8... Paper.
Claims (1)
右側を送行させる右側フィードローラと、用紙の左側を
送行させる左側フィードローラと、用紙の左側先頭を検
出する左側始端センサと、用紙の右側先頭を検出する右
側始端センサと、前記左側始端センサが用紙の左側先頭
を検出して前記右側始端センサが用紙の右側先頭を検出
しない時は前記左側フィードローラを停止させて前記右
側フィードローラを駆動させ、前記右側始端センサが用
紙の右側先頭を検出して前記左側始端センサが用紙の左
側先頭を検出しない時は前記右側フィードローラを停止
させて前記左側フィードローラを駆動させることを特徴
とするプリンタの用紙吸入機構。A left feed roller that feeds the left side of the paper, a right feed roller that feeds the right side of the paper, a left feed roller that feeds the left side of the paper, a left start edge sensor that detects the left side top of the paper, and a left side start edge sensor that detects the right side top of the paper. When the right side start edge sensor detects the left side start edge sensor and the left side start edge sensor detects the left side start edge of the paper, and the right side start edge sensor does not detect the right side edge of the paper, the left side feed roller is stopped and the right side feed roller is driven; When the right side start edge sensor detects the right side head of the paper and the left side start edge sensor does not detect the left side head of the paper, the right side feed roller is stopped and the left side feed roller is driven. Inhalation mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26995490A JPH04144764A (en) | 1990-10-08 | 1990-10-08 | Paper suction mechanism for printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26995490A JPH04144764A (en) | 1990-10-08 | 1990-10-08 | Paper suction mechanism for printer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04144764A true JPH04144764A (en) | 1992-05-19 |
Family
ID=17479533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26995490A Pending JPH04144764A (en) | 1990-10-08 | 1990-10-08 | Paper suction mechanism for printer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04144764A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6142467A (en) * | 1997-01-14 | 2000-11-07 | Nec Corporation | Sheet feeder having an intermittent coupling member |
| JP2008265192A (en) * | 2007-04-23 | 2008-11-06 | Tohoku Ricoh Co Ltd | Double-sided printer |
-
1990
- 1990-10-08 JP JP26995490A patent/JPH04144764A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6142467A (en) * | 1997-01-14 | 2000-11-07 | Nec Corporation | Sheet feeder having an intermittent coupling member |
| JP2008265192A (en) * | 2007-04-23 | 2008-11-06 | Tohoku Ricoh Co Ltd | Double-sided printer |
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