JP2004160797A - Recording device - Google Patents

Recording device Download PDF

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Publication number
JP2004160797A
JP2004160797A JP2002328362A JP2002328362A JP2004160797A JP 2004160797 A JP2004160797 A JP 2004160797A JP 2002328362 A JP2002328362 A JP 2002328362A JP 2002328362 A JP2002328362 A JP 2002328362A JP 2004160797 A JP2004160797 A JP 2004160797A
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JP
Japan
Prior art keywords
recording
paper
recording paper
feed roller
paper feed
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.)
Withdrawn
Application number
JP2002328362A
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Japanese (ja)
Inventor
Takashi Kasahara
隆史 笠原
Masaya Shinmachi
昌也 新町
Junichi Yoshikawa
淳一 吉川
Tetsuya Ishikawa
哲也 石川
Koichi Tanno
幸一 丹野
Fumihiro Gotou
史博 後藤
Ken Aoi
謙 青井
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP2002328362A priority Critical patent/JP2004160797A/en
Publication of JP2004160797A publication Critical patent/JP2004160797A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To reduce image degradation at the time when a recording paper separates from a paper feed roller, and to enlarge a printing ensuring region of the recording paper. <P>SOLUTION: When a sensor for detecting the presence/absence of the recording paper is turned to indicate absence from presence, a drive pulse number of an LF motor is counted. A position where the recording paper separates from the paper feed roller is estimated from the value. Sending of the recording paper is stopped before the position. A means for executing LF by an amount whereby a paper discharge roller further sends the recording paper after the recording paper separates from the paper feed roller from the above state is carried out. By this control, the LF can be prevented from stopping at a position where flicking is brought about, and printing at a position of an instable state can be avoided. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
キャリッジの走査、記録紙送りすることにより記録を行う記録装置に関する。
【0002】
【従来の技術】
シリアル記録装置において、給紙された記録紙が印字ヘッドの下でたわみ等が生じて、印字ヘッドと接触して記録紙を汚したり、記録ヘッドの走査を妨害することがある。この対策として、排紙ローラを記録ヘッドを挟んで給紙ローラとは反対側に設け、記録ヘッドの前後で記録紙を固定していた。更には、排紙ローラを給紙ローラに対して僅かに増速して記録紙にテンションをかけることで、記録紙のたわみを抑制していた。
【0003】
しかしながら、常に記録紙にテンションがかかってるため、記録紙の後端が給紙ローラから離れる瞬間に排紙ローラ方向へはじけてしまい、正確な紙送りが出来ない。このため印字される画像に乱れが生じる。
【0004】
従来はこの対策として、記録紙が給紙されて記録紙の先端が排紙ローラに到達するまでの間、及び記録紙の後端が給紙ローラを離れて記録ヘッド部を通過するまでの間は「印字可能領域」と称して「印字保証領域」と区別し、ユーザに対して「印字可能領域」での印字を推奨していなかった。
【0005】
【発明が解決しようとする課題】
しかしながら、前記従来例では次のような問題点があった。
【0006】
1.記録紙の印字保証領域が狭くなる。
【0007】
2.近年スループット向上等のため、印字ヘッドのノズル数が増大し、印字ヘッドが巨大化している。これに伴い、上記の給紙ローラと排紙ローラの間隔も拡がり、「印字保証領域」は益々狭くなる。
【0008】
本実施例では、上記問題点を解決する。
【0009】
【課題を解決するための手段】
動作の制御を行うCPU、制御手順を格納したROM、データを一時的に格納するRAM、記録紙の搬送を行う手段からなる記録装置において、記録紙が給紙ローラを離れる位置を検知する手段、記録紙の有無を検知するセンサを用いて記録紙が給紙ローラを離れる位置を検知する手段、記録紙の有無を検知するセンサが有りから無しになった時からLFモータの駆動パルス数をカウントし、この値から記録紙が給紙ローラを離れる位置を検知する手段、記録紙が給紙ローラを離れる位置を予測し、この位置の前でLF量を制御する手段、記録紙が給紙ローラを離れる位置よりも1パルス以上前、且つ通常のLF量以下の位置で記録紙送りが停止するように制御する手段、記録紙が給紙ローラから離れる位置よりも前で停止している状態から、記録紙が給紙ローラを離れて排紙ローラにより更に記録紙が行われる量だけLFする手段、記録紙が給紙ローラを離れてからは排紙ローラが記録紙の搬送、及び位置の制御を行う手段、を有する。
【0010】
(作用)
記録紙が給紙ローラを離れる時の画像劣化を軽減でき、記録紙の印字保証領域を拡大できる。
【0011】
【発明の実施の形態】
図1に本実施例の基本構成を示す。101は動作の制御を行うCPU、102は動作手順が格納してあるROM、103はデータを一時的に格納するRAM、104は記録紙の有無を検知する手段、105は紙送りモータである。
【0012】
図2は本発明の実施例にかかわる記録装置の構成例を示す。
【0013】
図2において、205はカートリッジであり、記録ヘッドHとインク供給源たるインクタンクとを一体としたものである。このヘッドカートリッジ205は、押さえ部材202によりキャリッジ206の上に固定されており、これらはシャフト211にそって長手方向に往復運動可能となっている。記録ヘッドより吐出されたインクは、記録ヘッドHと微小間隔をおいて、プラテン210に記録面を規制された記録媒体209に到達し、画像を形成する。
【0014】
記録ヘッドHにはケーブル207及びこれに結合する端子を介して適宜のデータ供給源より画像データに応じた吐出信号が供給されるヘッドカートリッジは、用いるインク色等に応じて、1ないし複数個(図示例では2個)を設けることができる。208はキャリッジ206をシャフト211に沿って走査させるためのパルスモータ、203はモータ208の駆動力をキャリッジ206に伝達するためのワイヤである。また、201はプラテンローラ210に結合して記録媒体209を搬送させるためのフィードモータ、204はキャリッジ206の位置を検出するHP(ポジション)センサである。
【0015】
図3を用いて記録紙の蹴飛ばし発生の概略を説明する。
【0016】
図3において、301は記録を記録ヘッド、302はプラテン、304は記録紙308の排紙を行う排紙ローラ、303は排紙動作を補助する拍車、305は記録紙308の給紙を行う給紙ローラ、306は給紙動作を補助するピンチローラ、307は記録紙の有無を検知するPEセンサである。
【0017】
ASF等に搭載されている記録紙は、印字の際、給紙ローラにより印字ヘッド301の位置まで搬送される。更にそのまま搬送され、排紙ローラに到達すると記録紙の先端部が排紙ローラ304と拍車303により固定され、排紙ローラ304と給紙ローラ305により両端を固定されている部分は均一な平面となり、高品位な印字を可能にする。更に、均一な平面をより確実なものにするために、給紙ローラの速度に対して排紙ローラの僅かに増速して、記録紙にテンションをかける。このとき、給紙ローラとピンチローラ間の圧力を拍車と排紙ローラ間の圧力より高くし、排紙ローラ側は常にスリップするようにすることで、記録紙の送りを給紙ローラで制御できる。
【0018】
この構成に置いて、印字が進んで記録紙後端が給紙ローラから離れる瞬間を考察する。前述のように排紙ローラは給紙ローラに対して増速されているため記録紙には排紙ローラ方向へテンションがかかっている。通常は記録紙の一端が給紙ローラに固定されているため、記録紙の送りは給紙ローラに制限されるが、記録紙の後端が給紙ローラを離れると給紙ローラによる制限が無くなる。よって、記録紙の後端が給紙ローラを離れる瞬間は、排紙ローラにより生じているテンションにより排紙ローラ側へはじける。以後、これを蹴飛ばしと表現する。この蹴飛ばし量は不定であるが、排紙ローラ側のメカ的なガタ分以内である。
【0019】
蹴飛ばし発生のタイミングと紙送りの関係を図4を用いて説明する。
【0020】
図に置いて、横軸は給紙ローラを駆動するLFモータの駆動パルス数、縦軸は給紙ローラの回転量を示すLF量である。本実施例では給紙ローラの駆動は、LFモータの3パルス分を1ステップとしている。
【0021】
1行印字を行う毎に給紙ローラは1ステップづつ駆動されるが、図では3ステップ目を駆動したところで給紙ローラから記録紙は離れ、蹴飛ばしが発生する。蹴飛ばし量は不定であるが、これは前述の通りメカのガタ分以内である。ここでメカのガタについて述べる。
【0022】
排紙ローラはLFモータで駆動されるが、LFモータはパルスモータを用いることで、励磁をしていれば停止状態でも保持できる。よってモータから排紙ローラまでの間のメカ的なガタが蹴飛ばし量となる。排紙ローラは給紙ローラに対して増速され、且つ記録紙に対する保持力は給紙ローラの方が高いので、排紙ローラは常に給紙ローラ側へ押しつけられている。この状態で記録紙の後端が給紙ローラから離れると、排紙ローラは給紙ローラの反対側へはじける。但しその量はLFモータの1パルス分以内となる。これは、排紙ローラもLFモータで駆動されており、LFモータを励磁することで、1パルス分以上の蹴飛ばしは生じない。
【0023】
以上が蹴飛ばし発生の概略である。
【0024】
次に図5を用いた蹴飛ばしによる画像不良を防ぐ方法を述べる。
【0025】
前述の通り蹴飛ばしは、給紙ローラのステップが、記録紙が給紙ローラを離れる瞬間に重なった場合であり、また蹴飛ばし量はLFモータの1パルス分以内である。よって、蹴飛ばしが発生しても更に排紙ローラにより記録紙が搬送されれば、排紙ローラのガタは一方向に安定するため、位置の制御が可能となる。このことから、給紙ローラのステップ中に蹴飛ばしが生じ、且つ更に排紙ローラにより搬送される様にすれば、蹴飛ばしによる位置不定の状態を無くすことが出来る。
【0026】
図5にこの制御の概略を示す。
【0027】
図4と同様に横軸はLFモータのパルス数、縦軸はLF量である。通常のLF量をLFモータの3パルス分とすると、図では3ステップ駆動したところで蹴飛ばしが発生する。しかし3ステップ目の駆動を2パルスとすると、4ステップ目を駆動中に蹴飛ばしの発生、及び蹴飛ばし発生後に排紙ローラによる搬送が行われ、蹴飛ばしによる位置不定の状態を無くすことが出来る。
【0028】
本制御を行うためには蹴飛ばし発生位置の予測が必要であるが、前述の通り蹴飛ばしは給紙ローラを離れる瞬間に生じるから、記録紙の後端が給紙ローラを離れる位置を検知すればよい。通常シリアル記録装置では記録紙の有無を検知するためのPEセンサが設置されており、これを用いれば予測が可能である。PEセンサの位置と給紙ローラの位置はメカ的に固定であるから、両者間の距離は固定である。よってPEセンサが記録紙無しを検知、即ち記録紙の後端を検知してから記録紙の後端が給紙ローラを離れる位置に到達するまでのパルス数を管理することで、蹴飛ばしが発生する位置を予測できる。
【0029】
図6に本実施例のフローチャートを示す。
【0030】
まず、後端を検知してからの制御で用いるカウンタCONTをクリアする(602)。印字命令がきたらPEセンサが記録紙を検知するまでLFを行う(603,604)。記録紙を検知したら(604)、更にヘッド部まで搬送する(605)。この量は、PEセンサからヘッド部までの距離は固定であるから、予めROM102に記憶しておけばよい。ヘッド部まで記録紙が到達したら、1行印字と通常量の紙送り(606,607)を、PEセンサが記録紙の後端を検知(608)するまで行う。記録紙の後端を検知しても記録ヘッド部分には記録紙は存在するので、さらに印字を行う。このとき、蹴飛ばし発生位置を予測するために、カウンタCONTを印字を行う毎にカウントアップする(609)。カウンタCONTがCONTendに達したら(610)次のステップで蹴飛ばしが発生すると判断し、一行印字を行ってから蹴飛ばし発生位置を通り過ぎ更に排紙ローラにより搬送される量のKTBだけ搬送する。以後は印字が終了するまで印字を行う(613,614)。
【0031】
なお以上の制御において、画像をシフトして印字ヘッド中の使用するノズルを変更して記録紙の送りの精度を確保する等の後端処理を行っても、同様である。
【0032】
更に、本実施例では蹴飛ばし発生位置の予測をPEセンサを用いて行ったが、専用のセンサを用いる等しても同様である。
【0033】
以上の制御を行うことで、記録紙が給紙ローラを離れる時の画像劣化を軽減でき、記録紙の印字保証領域を拡大できる。
【0034】
【発明の効果】
記録紙が給紙ローラを離れる時の画像劣化を軽減でき、記録紙の印字保証領域を拡大できる。
【図面の簡単な説明】
【図1】本発明の基本構成を示すブロック図である。
【図2】本発明に係わるシリアル記録装置の構成例を示す図である。
【図3】実施例の構成の概要を示す図である。
【図4】実施例の動作の概要を示す図である。
【図5】実施例の動作の概要を示す図である。
【図6】実施例のフローチャートを示す図である。
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a recording apparatus that performs recording by scanning a carriage and feeding recording paper.
[0002]
[Prior art]
In a serial recording apparatus, the fed recording paper may bend under the print head, and may come into contact with the print head to stain the recording paper or hinder the scanning of the recording head. As a countermeasure, the paper discharge roller is provided on the opposite side of the recording head from the paper supply roller, and the recording paper is fixed before and after the recording head. Further, the paper discharge roller is slightly accelerated relative to the paper feed roller to apply tension to the recording paper, thereby suppressing the bending of the recording paper.
[0003]
However, since the recording paper is always under tension, the recording paper is repelled in the discharge roller direction at the moment when the trailing edge of the recording paper is separated from the paper feeding roller, and accurate paper feeding cannot be performed. For this reason, the printed image is disturbed.
[0004]
Conventionally, as a countermeasure, a period between the time when the recording paper is fed and the leading end of the recording paper reaches the discharge roller, and the time when the rear end of the recording paper leaves the paper feed roller and passes through the recording head unit. Referred to as a “printable area” and distinguished from a “printable area”, and did not recommend the user to print in the “printable area”.
[0005]
[Problems to be solved by the invention]
However, the conventional example has the following problems.
[0006]
1. The print guarantee area of the recording paper becomes narrow.
[0007]
2. In recent years, the number of nozzles of the print head has been increased in order to improve throughput and the like, and the print head has been enlarged. Along with this, the interval between the paper feed roller and the paper discharge roller also increases, and the “print guarantee area” becomes narrower.
[0008]
This embodiment solves the above problem.
[0009]
[Means for Solving the Problems]
A recording device comprising a CPU for controlling operation, a ROM for storing a control procedure, a RAM for temporarily storing data, and a unit for transporting recording paper, a unit for detecting a position at which the recording paper leaves the paper feed roller; A means for detecting the position where the recording paper leaves the paper feed roller using a sensor for detecting the presence or absence of the recording paper, and counting the number of drive pulses of the LF motor from when the presence or absence of the sensor for detecting the presence or absence of the recording paper Means for detecting the position at which the recording paper leaves the paper feed roller from this value, means for predicting the position at which the recording paper will leave the paper feed roller, and means for controlling the amount of LF before this position; Means for controlling the recording paper feed to stop at a position one pulse or more before the position where the recording paper leaves and at a position equal to or less than the normal LF amount, from a state where the recording paper stops before the position where the recording paper leaves the paper feed roller A means for feeding the recording paper away from the paper feed roller and feeding the recording paper further by the discharge roller, and a paper discharge roller controls the conveyance of the recording paper and the position control after the recording paper leaves the paper feed roller. Means to perform.
[0010]
(Action)
Image deterioration when the recording paper leaves the paper feed roller can be reduced, and the print guarantee area of the recording paper can be enlarged.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 shows the basic configuration of this embodiment. 101 is a CPU for controlling the operation, 102 is a ROM in which operation procedures are stored, 103 is a RAM for temporarily storing data, 104 is means for detecting the presence or absence of recording paper, and 105 is a paper feed motor.
[0012]
FIG. 2 shows a configuration example of a recording apparatus according to the embodiment of the present invention.
[0013]
In FIG. 2, reference numeral 205 denotes a cartridge, which integrates a recording head H and an ink tank as an ink supply source. The head cartridge 205 is fixed on a carriage 206 by a pressing member 202, and these can reciprocate in a longitudinal direction along a shaft 211. The ink discharged from the recording head reaches the recording medium 209 whose recording surface is regulated by the platen 210 at a minute interval from the recording head H, and forms an image.
[0014]
The print head H is supplied with an ejection signal corresponding to image data from an appropriate data supply source via a cable 207 and a terminal coupled thereto. (Two in the illustrated example). Reference numeral 208 denotes a pulse motor for scanning the carriage 206 along the shaft 211, and reference numeral 203 denotes a wire for transmitting the driving force of the motor 208 to the carriage 206. Reference numeral 201 denotes a feed motor coupled to the platen roller 210 to convey the recording medium 209, and reference numeral 204 denotes an HP (position) sensor for detecting the position of the carriage 206.
[0015]
An outline of the occurrence of kicking of the recording paper will be described with reference to FIG.
[0016]
3, reference numeral 301 denotes a recording head for recording, 302 denotes a platen, 304 denotes a discharge roller for discharging the recording paper 308, 303 denotes a spur for assisting the discharge operation, and 305 denotes a supply for feeding the recording paper 308. A paper roller 306 is a pinch roller for assisting a paper feeding operation, and 307 is a PE sensor for detecting the presence or absence of a recording paper.
[0017]
The recording paper mounted on the ASF or the like is conveyed to the position of the print head 301 by a paper feed roller during printing. Further, when the recording paper is further conveyed and reaches the paper discharge roller, the leading end of the recording paper is fixed by the paper discharge roller 304 and the spur 303, and the portion where both ends are fixed by the paper discharge roller 304 and the paper supply roller 305 becomes a uniform plane. Enables high quality printing. Further, in order to secure a uniform flat surface, the recording paper is tensioned by slightly increasing the speed of the paper discharging roller with respect to the speed of the paper feeding roller. At this time, by making the pressure between the paper feed roller and the pinch roller higher than the pressure between the spur and the paper discharge roller and making the paper discharge roller always slip, the paper feed can be controlled by the paper feed roller. .
[0018]
With this configuration, the moment when the printing progresses and the trailing edge of the recording paper separates from the paper feed roller will be considered. As described above, since the speed of the paper discharge roller is increased relative to that of the paper feed roller, tension is applied to the recording paper in the direction of the paper discharge roller. Usually, since one end of the recording paper is fixed to the paper feeding roller, the feeding of the recording paper is limited to the paper feeding roller, but when the trailing end of the recording paper leaves the paper feeding roller, the restriction by the paper feeding roller is removed. . Therefore, at the moment when the trailing edge of the recording paper leaves the paper feed roller, the recording paper is repelled toward the paper discharge roller by the tension generated by the paper discharge roller. Hereinafter, this is referred to as kicking. The kicking amount is not fixed, but is within the mechanical play on the paper discharge roller side.
[0019]
The relationship between the timing of kicking and the paper feed will be described with reference to FIG.
[0020]
In the figure, the horizontal axis represents the number of drive pulses of the LF motor for driving the paper feed roller, and the vertical axis represents the LF amount indicating the rotation amount of the paper feed roller. In the present embodiment, the driving of the paper feed roller is performed in one step for three pulses of the LF motor.
[0021]
Each time one line printing is performed, the paper feed roller is driven one step at a time. However, in the figure, when the third step is driven, the recording paper separates from the paper feed roller and kicking occurs. The kicking amount is undefined, but this is within the mechanical play as described above. Here, the play of the mechanism will be described.
[0022]
The discharge roller is driven by an LF motor, and the LF motor uses a pulse motor so that it can be held in a stopped state as long as it is excited. Therefore, the mechanical play between the motor and the paper discharge roller becomes the kicking amount. The speed of the paper discharge roller is increased with respect to the paper supply roller, and the paper feed roller has a higher holding force with respect to the recording sheet. Therefore, the paper discharge roller is always pressed against the paper supply roller. When the trailing end of the recording paper is separated from the paper feed roller in this state, the paper discharge roller is repelled to the opposite side of the paper feed roller. However, the amount is within one pulse of the LF motor. This is because the paper discharge roller is also driven by the LF motor, and the excitation of the LF motor does not cause kicking of more than one pulse.
[0023]
The above is the outline of the kicking occurrence.
[0024]
Next, a method for preventing image defects due to kicking using FIG. 5 will be described.
[0025]
As described above, kicking is the case where the steps of the paper feed roller overlap at the moment when the recording paper leaves the paper feed roller, and the kicking amount is within one pulse of the LF motor. Therefore, even if kicking occurs, if the recording paper is further conveyed by the paper discharge roller, the play of the paper discharge roller is stabilized in one direction, and the position can be controlled. For this reason, if kicking occurs during the step of the sheet feeding roller and the sheet is further conveyed by the sheet discharging roller, an indeterminate position due to the kicking can be eliminated.
[0026]
FIG. 5 shows the outline of this control.
[0027]
As in FIG. 4, the horizontal axis represents the number of pulses of the LF motor, and the vertical axis represents the LF amount. Assuming that the normal LF amount is equivalent to three pulses of the LF motor, kicking occurs at the time of driving three steps in the figure. However, if the third step is driven by two pulses, kicking occurs during the driving of the fourth step, and the sheet is conveyed by the discharge roller after the kicking occurs, so that the state of indeterminate position due to the kicking can be eliminated.
[0028]
In order to perform this control, it is necessary to predict the position where the kicking occurs. However, as described above, since the kicking occurs at the moment of leaving the paper feed roller, it is sufficient to detect the position where the trailing edge of the recording paper leaves the paper feed roller. . Usually, a serial recording apparatus is provided with a PE sensor for detecting the presence or absence of a recording sheet, and prediction can be made by using the PE sensor. Since the position of the PE sensor and the position of the paper feed roller are mechanically fixed, the distance between them is fixed. Therefore, kicking occurs by detecting the absence of the recording paper by the PE sensor, that is, by managing the number of pulses from when the rear end of the recording paper reaches the position where the rear end of the recording paper leaves the paper feed roller. Predict location.
[0029]
FIG. 6 shows a flowchart of this embodiment.
[0030]
First, the counter CONT used for control after detecting the rear end is cleared (602). When the print command is received, LF is performed until the PE sensor detects the recording paper (603, 604). When the recording paper is detected (604), it is further transported to the head (605). Since the distance from the PE sensor to the head unit is fixed, this amount may be stored in the ROM 102 in advance. When the recording paper arrives at the head, one-line printing and normal paper feeding (606, 607) are performed until the PE sensor detects the trailing edge of the recording paper (608). Even if the trailing edge of the recording paper is detected, the recording paper is present in the recording head portion, so that further printing is performed. At this time, the counter CONT is counted up every time printing is performed in order to predict the kicking occurrence position (609). When the counter CONT reaches CONTend (610), it is determined that kicking will occur in the next step. After printing one line, the sheet passes the kicking occurrence position and is further conveyed by the amount of KTB conveyed by the paper discharge roller. Thereafter, printing is performed until printing is completed (613, 614).
[0031]
In the above control, the same applies to the case where the rear end processing such as shifting the image and changing the nozzles used in the print head to secure the accuracy of feeding the recording paper is performed.
[0032]
Furthermore, in the present embodiment, the kicking occurrence position is predicted using the PE sensor. However, the same applies to the case where a dedicated sensor is used.
[0033]
By performing the above control, it is possible to reduce image deterioration when the recording paper leaves the paper feed roller, and it is possible to enlarge the print guarantee area of the recording paper.
[0034]
【The invention's effect】
Image deterioration when the recording paper leaves the paper feed roller can be reduced, and the print guarantee area of the recording paper can be enlarged.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a basic configuration of the present invention.
FIG. 2 is a diagram showing a configuration example of a serial recording device according to the present invention.
FIG. 3 is a diagram illustrating an outline of a configuration of an embodiment.
FIG. 4 is a diagram showing an outline of an operation of the embodiment.
FIG. 5 is a diagram illustrating an outline of an operation of the embodiment.
FIG. 6 is a diagram showing a flowchart of the embodiment.

Claims (7)

動作の制御を行うCPU、制御手順を格納したROM、データを一時的に格納するRAM、記録紙の搬送を行う手段からなる記録装置において、
記録紙が給紙ローラを離れる位置を検知する手段を有することを特徴とする記録装置。
In a printing apparatus including a CPU for controlling operation, a ROM for storing a control procedure, a RAM for temporarily storing data, and a unit for conveying a recording sheet,
A recording apparatus comprising means for detecting a position at which a recording sheet leaves a paper feed roller.
上記請求項1の記録装置において、記録紙の有無を検知するセンサを用いて記録紙が給紙ローラを離れる位置を検知する手段を有することを特徴とする記録装置。2. The recording apparatus according to claim 1, further comprising means for detecting a position at which the recording sheet leaves the paper feed roller by using a sensor for detecting the presence or absence of the recording sheet. 上記請求項2の記録装置において、記録紙の有無を検知するセンサが、記録紙が有りから無しになった時からLFモータの駆動パルス数をカウントし、この値から記録紙が給紙ローラを離れる位置を予測する手段を有することを特徴とする記録装置。In the recording apparatus according to the second aspect, the sensor for detecting the presence or absence of the recording sheet counts the number of drive pulses of the LF motor from the time when the recording sheet is present or absent. A recording apparatus, comprising: means for predicting a separation position. 上記請求項3の記録装置において、記録紙が給紙ローラを離れる位置を予測し、この位置の前でLF量を制御することを特徴とする記録装置。4. The recording apparatus according to claim 3, wherein a position at which the recording sheet leaves the paper feed roller is predicted, and the LF amount is controlled before this position. 上記請求項4の記録装置において、記録紙が給紙ローラを離れる位置よりも1パルス以上前、且つ通常のLF量以下の位置で記録紙送りが停止するように制御することを特徴とする記録装置。5. The recording apparatus according to claim 4, wherein the recording paper feed is controlled to stop at a position one pulse or more before the position where the recording paper leaves the paper feed roller and at a position equal to or less than a normal LF amount. apparatus. 上記請求項5の記録装置において、記録紙が給紙ローラを離れる位置よりも前で停止している状態から、記録紙が給紙ローラを離れる位置から排紙ローラにより更に記録紙搬送が行われる量だけLFすることを特徴とする記録装置。6. The recording apparatus according to claim 5, wherein the recording paper is further conveyed by a discharge roller from a position where the recording paper leaves the paper feed roller from a state where the recording paper stops before a position where the recording paper leaves the paper feed roller. A recording device for performing LF by an amount. 上記請求項6の記録装置において、記録紙が給紙ローラを離れてからは排紙ローラが記録紙の搬送、及び位置の制御を行うことを特徴とする記録装置。7. The recording apparatus according to claim 6, wherein after the recording paper leaves the paper feed roller, the discharge roller controls the conveyance of the recording paper and the position.
JP2002328362A 2002-11-12 2002-11-12 Recording device Withdrawn JP2004160797A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007196617A (en) * 2006-01-30 2007-08-09 Brother Ind Ltd Image forming apparatus and control program of image forming apparatus
JP2008050083A (en) * 2006-08-23 2008-03-06 Canon Inc Conveying device and controlling method therefor
JP2008229886A (en) * 2007-03-16 2008-10-02 Seiko Epson Corp Liquid ejection device, liquid ejection method, inspection method of liquid ejection device
KR100910695B1 (en) 2007-12-06 2009-08-04 윤점채 A system and the method for cleaning semiconductor units
JP2010046935A (en) * 2008-08-22 2010-03-04 Canon Inc Recording device and recording control method
JP2018144905A (en) * 2017-03-01 2018-09-20 キヤノン株式会社 Conveying device
JP7524626B2 (en) 2020-06-18 2024-07-30 セイコーエプソン株式会社 Recording apparatus and control method therefor

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007196617A (en) * 2006-01-30 2007-08-09 Brother Ind Ltd Image forming apparatus and control program of image forming apparatus
US8020985B2 (en) 2006-01-30 2011-09-20 Brother Kogyo Kabushiki Kaisha Image-forming device
US8333467B2 (en) 2006-01-30 2012-12-18 Brother Kogyo Kabushiki Kaisha Image-forming device
JP2008050083A (en) * 2006-08-23 2008-03-06 Canon Inc Conveying device and controlling method therefor
JP2008229886A (en) * 2007-03-16 2008-10-02 Seiko Epson Corp Liquid ejection device, liquid ejection method, inspection method of liquid ejection device
KR100910695B1 (en) 2007-12-06 2009-08-04 윤점채 A system and the method for cleaning semiconductor units
JP2010046935A (en) * 2008-08-22 2010-03-04 Canon Inc Recording device and recording control method
JP2018144905A (en) * 2017-03-01 2018-09-20 キヤノン株式会社 Conveying device
JP7524626B2 (en) 2020-06-18 2024-07-30 セイコーエプソン株式会社 Recording apparatus and control method therefor

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