JP2000092874A

JP2000092874A - Driving control for oscillatory wave motor, oscillatory wave motor, driving controller therefor, device therewith, and image forming device

Info

Publication number: JP2000092874A
Application number: JP10258537A
Authority: JP
Inventors: Toshihiko Otsubo; 俊彦大坪
Original assignee: Canon Inc
Current assignee: Canon Inc
Priority date: 1998-09-11
Filing date: 1998-09-11
Publication date: 2000-03-31

Abstract

PROBLEM TO BE SOLVED: To provide a driving control method for oscillatory wave motor, capable of attaining longer life of an oscillatory wave motor and being driven with fixed characteristics. SOLUTION: This driving control for oscillatory wave motor, which drives a body to be driven such as a photosensitive drum using the oscillatory wave motor as its driving source, drives the oscillatory wave motor at a rotational speed capable of recovering the friction driving part of the oscillatory wave motor after the completion of the driving operation of the body to be driven, if the rotational speed of the oscillatory wave motor is lower than a prescribed one.

Description

DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は、振動波モータの駆
動制御方法、振動波モータ装置、振動波モータの駆動制
御装置、振動波モータを備えた装置及び画像形成装置に
関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drive control method for a vibration wave motor, a vibration wave motor device, a drive control device for a vibration wave motor, a device equipped with a vibration wave motor, and an image forming apparatus.

【０００２】[0002]

【従来の技術】振動波モータは、例えばリング状の弾性
体の片面側に電気−機械エネルギー変換素子としての圧
電素子を例えば接着剤により接着固定したものを振動体
とし、前記弾性体の他面側を駆動面とし、加圧手段を介
して該駆動面に接触部材を加圧接触させ、前記圧電素子
の駆動用の圧電素子部に移相の異なる周波電圧を印加す
ることにより、例えば前記弾性体に曲げ振動を励起し、
その合成により駆動波としての進行波を形成し、これに
より前記弾性体と前記接触部材とを摩擦力により相対移
動させるようにしている。2. Description of the Related Art A vibrating wave motor is a vibrating body in which a piezoelectric element as an electro-mechanical energy conversion element is adhered and fixed, for example, with an adhesive to one side of a ring-shaped elastic body, and the other surface of the elastic body is used. The driving side is a driving surface, and a contact member is brought into pressure contact with the driving surface via a pressing means, and a frequency voltage having a different phase shift is applied to a piezoelectric element portion for driving the piezoelectric element, for example, the elasticity is increased. Exciting bending vibration in the body,
A traveling wave as a driving wave is formed by the combination thereof, whereby the elastic body and the contact member are relatively moved by a frictional force.

【０００３】また、振動体をモータケースに固定し、前
記接触部材を前記振動体に対して回転するロータとした
場合、前記ロータをその回転中心に配置した回転軸に連
結し、前記回転軸によりロータの回転出力を取り出すよ
うにしたものもが提案されている。In the case where the vibrating body is fixed to a motor case and the contact member is a rotor that rotates with respect to the vibrating body, the rotor is connected to a rotating shaft arranged at the center of rotation, and the rotating shaft is connected to the rotating shaft. There has also been proposed one that takes out the rotational output of the rotor.

【０００４】そして、振動波モータの回転軸にロータリ
ーエンコーダを取り付け、前記ロータリーエンコーダに
より検出した回転速度と目標速度とを比較し、例えば比
例・積分制御系等により、目標速度となるように前記振
動波モータの駆動用圧電素子に印加卯する周波電圧の周
波数を小さくするように（振動体の共振周波数よりも高
周波数側を駆動制御域として使用しているので、周波数
を共振点側に向けて低くするにつれて回転数が上がる）
駆動制御回路によりフィードバック制御が行われる。[0004] A rotary encoder is attached to the rotating shaft of the vibration wave motor, and the rotation speed detected by the rotary encoder is compared with a target speed. In order to reduce the frequency of the frequency voltage applied to the driving piezoelectric element of the wave motor (the higher frequency side than the resonance frequency of the vibrating body is used as the drive control area, (The number of rotations rises as you lower it)
Feedback control is performed by the drive control circuit.

【０００５】[0005]

【発明が解決しようとする課題】しかしながら、振動波
モータが低速度で回転した場合、詳細な原因は不明では
あるが、振動波モータの振動面に異常摩耗が発生するこ
とがあり、高速回転に比べて寿命及び回転特性を低下さ
せることがあった。However, when the vibration wave motor rotates at a low speed, although the detailed cause is unknown, abnormal wear may occur on the vibration surface of the vibration wave motor, and high speed rotation may occur. In some cases, the life and the rotation characteristics may be reduced.

【０００６】本出願に係る発明の目的は、振動波モータ
のより一層の高寿命化が図れ、また常に一定の特性で駆
動することができる振動波モータの駆動制御方法、振動
波モータ装置、振動波モータの駆動制御装置、振動波モ
ータを備えた装置及び画像形成装置を提供しようとする
ものである。SUMMARY OF THE INVENTION It is an object of the present invention to provide a drive control method of a vibration wave motor, a vibration wave motor device, a vibration wave motor device, which can further extend the life of the vibration wave motor and can always be driven with constant characteristics. An object of the present invention is to provide a drive control device for a wave motor, a device including a vibration wave motor, and an image forming apparatus.

【０００７】[0007]

【課題を解決するための手段】本出願に係る発明の目的
を実現する振動波モータの駆動制御方法は、振動波モー
タを駆動源として被駆動体を駆動する振動波モータの駆
動制御方法において、前記振動波モータがリカバーが必
要な回転数で回転した場合、前記被駆動体の駆動動作の
終了後に、前記振動波モータの摩擦駆動部分をリカバー
可能とする回転数で前記振動波モータを駆動するように
したものである。A drive control method of a vibration wave motor for realizing the object of the invention according to the present application is a drive control method of a vibration wave motor that drives a driven body using the vibration wave motor as a drive source. When the vibration wave motor rotates at a rotation speed required for recovery, after the driving operation of the driven body is completed, the vibration wave motor is driven at a rotation speed at which the friction drive portion of the vibration wave motor can be recovered. It is like that.

【０００８】本出願に係る発明の目的を実現する振動波
モータの駆動制御装置は、被駆動体を駆動する振動波モ
ータの回転速度を検出する速度検出手段からの検出情報
と目標速度とを比較し、目標速度となるように前記振動
波モータへの駆動信号をフィードバック制御する振動波
モータの駆動制御装置において、前記振動波モータがリ
カバーが可能な回転数で駆動されたか否かを判定する判
定手段と、振動波モータの回転数がリカバー可能な回転
数で駆動されたと前記判定手段が判定すると、前記被駆
動体の駆動動作の終了後に、前記振動波モータを前記振
動波モータの摩擦駆動部分をリカバー可能とする回転数
で駆動させるリカバー制御手段とを有するものである。A drive control apparatus for a vibration wave motor for realizing the object of the invention according to the present application compares a target speed with information detected from speed detection means for detecting a rotation speed of a vibration wave motor driving a driven body. And determining whether or not the vibration wave motor has been driven at a rotational speed capable of recovering, in the vibration wave motor drive control device for performing feedback control of the drive signal to the vibration wave motor so as to reach the target speed. Means, when the determination means determines that the rotational speed of the vibration wave motor has been driven at a recoverable rotational speed, after the driving operation of the driven body is completed, the vibration wave motor is driven by a friction drive portion of the vibration wave motor. And a recovery control means for driving at a rotation speed that enables recovery.

【０００９】本出願に係る発明の目的を実現する振動波
モータを備えた装置は、例えば上記した振動波モータの
駆動制御装置を有し、前記振動波モータを駆動源として
被駆動体を駆動するようにしたものである。An apparatus having a vibration wave motor for realizing the object of the invention according to the present application includes, for example, a drive control device for the vibration wave motor described above, and drives a driven body using the vibration wave motor as a drive source. It is like that.

【００１０】本出願に係る発明の目的を実現する画像形
成装置は、例えば上記した構成の振動波モータの駆動制
御装置を有し、画像形成のために駆動される被駆動体の
駆動源に前記振動波モータを用いたものである。An image forming apparatus for realizing the object of the invention according to the present application includes, for example, a drive control device for a vibration wave motor having the above-described configuration, and a drive source for a driven body driven for image formation. It uses a vibration wave motor.

【００１１】[0011]

【発明の実施の形態】（第１の実施の形態）図１〜図４
は本発明の第１の実施の形態を示す。(First Embodiment) FIGS. 1 to 4
Shows a first embodiment of the present invention.

【００１２】図４はカラー画像形成装置の全体の概略構
成を示し、まずカラーリーダ部の構成を説明する。１０
１はＣＣＤ、３１１はＣＣＤ１０１の実装された基板、
３１２はプリンタ処理部、３０１は原稿台ガラス（プラ
テン）、３０２は原稿給紙装置（なお、この原稿給紙装
置３０２の代わりに不図示の鏡面圧板もしくは白色圧板
を装着する構成もある）、３０３及び３０４は原稿を照
明するハロゲンランプ又は蛍光灯等の光源、３０５及び
３０６は光源３０３・３０４の光を原稿に集光する反射
傘、３０７〜３０９はミラー、３１０は原稿からの反射
光又は投影光をＣＣＤ１０１上に集光するレンズ、３１
４はハロゲンランプ３０３・３０４と反射傘３０５・３
０６とミラー３０７を収容するキャリッジ、３１５はミ
ラー３０８・３０９を収容するキャリッジ、３１３は他
のＩＰＵ等とのインターフェイス（Ｉ／Ｆ）部である。
なお、キャリッジ３１４は速度Ｖで、キャリッジ３１５
は速度Ｖ／２で、ＣＣＤ１０１の電気的走査（主走査）
方向に対して垂直方向に機械的に移動することによっ
て、原稿の全面を走査（副走査）する。FIG. 4 shows a schematic configuration of the entire color image forming apparatus. First, the configuration of the color reader will be described. 10
1 is a CCD, 311 is a substrate on which the CCD 101 is mounted,
Reference numeral 312 denotes a printer processing unit, reference numeral 301 denotes a platen glass (platen), reference numeral 302 denotes a document feeder (note that a mirror pressure plate or a white pressure plate (not shown) may be mounted in place of the document feeder 302), 303 And 304, a light source such as a halogen lamp or a fluorescent lamp for illuminating the original, 305 and 306, reflectors for condensing the light from the light sources 303 and 304 on the original, 307 to 309 mirrors, and 310, reflected light or projection from the original A lens for condensing light on the CCD 101, 31
4 is a halogen lamp 303/304 and a reflective umbrella 305.3
Reference numeral 315 denotes a carriage that houses the mirrors 308 and 309, and 313 denotes an interface (I / F) unit with another IPU or the like.
Note that the carriage 314 has a speed V and the carriage 315
Is the electric speed (main scanning) of the CCD 101 at the speed V / 2
The entire surface of the document is scanned (sub-scanning) by mechanically moving in the direction perpendicular to the direction.

【００１３】次に、図４におけるプリンタ部の構成を説
明する。３１７はマゼンタ（Ｍ）画像形成部、３１８は
シアン（Ｃ）画像形成部、３１９はイエロウ（Ｙ）画像
形成部、３２０は黒（Ｋ）画像形成部で、それぞれの構
成は同一なのでＭ画像形成部３１７を詳細に説明し、他
の画像形成部の説明は省略する。Next, the configuration of the printer unit in FIG. 4 will be described. Reference numeral 317 denotes a magenta (M) image forming unit, 318 denotes a cyan (C) image forming unit, 319 denotes a yellow (Y) image forming unit, and 320 denotes a black (K) image forming unit. The unit 317 will be described in detail, and description of other image forming units will be omitted.

【００１４】Ｍ画像形成部３１７において、３４２は感
光ドラムで、ＬＥＤアレー２１０からの光によって、そ
の表面に潜像が形成される。３２１は一次帯電器で、感
光ドラム３４２の表面を所定の電位に帯電させ、潜像形
成の準備をする。３２２は現像器で、感光ドラム３４２
上の潜像を現像して、トナー画像を形成する。なお、現
像器３２２には、現像バイアスを印加して現像するため
のスリーブ３４５が含まれている。In the M image forming unit 317, reference numeral 342 denotes a photosensitive drum, on which a latent image is formed by light from the LED array 210. A primary charger 321 charges the surface of the photosensitive drum 342 to a predetermined potential to prepare for forming a latent image. Reference numeral 322 denotes a developing device, and the photosensitive drum 342
The upper latent image is developed to form a toner image. Note that the developing device 322 includes a sleeve 345 for applying a developing bias to perform development.

【００１５】３２３は転写帯電器で、転写材搬送ベルト
３３３の背面から放電を行い、感光ドラム３４２上のト
ナー画像を、転写材搬送ベルト３３３上の記録紙などへ
転写する。本実施の形態は転写効率が良いため、クリー
ナ部が配置されていないが、クリーナ部を装着しても問
題ないことは言うまでもない。Reference numeral 323 denotes a transfer charger which discharges from the back surface of the transfer material transport belt 333 to transfer the toner image on the photosensitive drum 342 to recording paper on the transfer material transport belt 333. In the present embodiment, the cleaner is not provided because the transfer efficiency is good. However, it goes without saying that there is no problem even if the cleaner is mounted.

【００１６】次に、記録紙等の転写材上へトナー画像を
転写する手順を説明する。カセット３４０・３４１に格
納された記録紙等の転写材はピックアップローラ３３９
・３３８により１枚毎給紙ローラ３３６・３３７で転写
材搬送ベルト３３３上に供給される。給紙された記録紙
は、吸着帯電器３４６で帯電させられる。３４８は転写
材搬送ベルトローラで、転写材搬送ベルト３３３を駆動
し、かつ、吸着帯電器３４６と対になって記録紙等を帯
電させ、転写材搬送ベルト３３３に記録紙等を吸着させ
る。なお、転写材搬送ベルトローラ３４８を転写材搬送
ベルト３３３を駆動するための駆動ローラとしても良
く、また反対側に転写材搬送ベルト３３３を駆動するた
めの駆動ローラを配置するようにしても良い。また、ロ
ーラ３４８の近くに駆動ローラ３４８ａを設けるように
しても良い。Next, a procedure for transferring a toner image onto a transfer material such as recording paper will be described. Transfer materials such as recording paper stored in the cassettes 340 and 341 are picked up by pickup rollers 339.
338, the sheet is supplied onto the transfer material transport belt 333 by the sheet feed rollers 336 and 337 one by one. The fed recording paper is charged by the adsorption charger 346. Reference numeral 348 denotes a transfer material transport belt roller that drives the transfer material transport belt 333 and charges the recording paper or the like in pairs with the attraction charger 346 so that the recording paper or the like is attracted to the transfer material transport belt 333. The transfer material transport belt roller 348 may be a drive roller for driving the transfer material transport belt 333, and a drive roller for driving the transfer material transport belt 333 may be disposed on the opposite side. Further, a driving roller 348a may be provided near the roller 348.

【００１７】３４７は紙先端センサで、転写材搬送ベル
ト３３３上の記録紙等の先端を検知する。なお、紙先端
センサ３４７の検出信号はプリンタ部からカラーリーダ
部へ送られて、カラーリーダ部からプリンタ部にビデオ
信号を送る際の副走査同期信号として用いられる。A paper edge sensor 347 detects the edge of a recording sheet or the like on the transfer material conveying belt 333. The detection signal of the paper leading edge sensor 347 is sent from the printer unit to the color reader unit, and is used as a sub-scanning synchronization signal when a video signal is sent from the color reader unit to the printer unit.

【００１８】この後、記録紙等は、転写材搬送ベルト３
３３によって搬送され、画像形成部３１７〜３２０にお
いてＭＣＹＫの順にその表面にトナー画像が形成され
る。Ｋ画像形成部３２０を通過した記録紙等の転写材
は、転写材搬送ベルト３３３からの分離を容易にするた
め、除電帯電器３４９で除電された後、転写材搬送ベル
ト３３３から分離される。３５０は剥離帯電器で、記録
紙等が転写材搬送ベルト３３３から分離する際の剥離放
電による画像乱れを防止するものである。分離された記
録紙等は、トナーの吸着力を補って画像乱れを防止する
ために、定着前帯電器３５１・３５２で帯電された後、
定着器３３４でトナー画像が熱定着された後、３３５の
排紙トレーに排紙される。Thereafter, the recording paper and the like are transferred to the transfer material transport belt 3.
The toner image is formed on the surface of the image forming units 317 to 320 in the order of MCYK. The transfer material such as recording paper that has passed through the K image forming unit 320 is separated from the transfer material transport belt 333 after the charge is removed by the charge removing charger 349 in order to facilitate separation from the transfer material transport belt 333. Reference numeral 350 denotes a peeling charger, which prevents image disturbance due to peeling discharge when recording paper or the like is separated from the transfer material transport belt 333. The separated recording paper or the like is charged by the pre-fixing chargers 351 and 352 in order to compensate for the toner adsorption force and prevent image disturbance,
After the toner image is thermally fixed by the fixing device 334, the toner image is discharged to a paper discharge tray 335.

【００１９】ここで、感光ドラム３４２〜３４５を回転
させるための駆動モータとして、本実施の形態では振動
波モータが用いられ、また、転写材搬送ベルト３３３を
駆動するための駆動ローラを駆動するためのモータとし
ても振動波モータが用いられる。In this embodiment, a vibration motor is used as a driving motor for rotating the photosensitive drums 342 to 345, and a driving roller for driving the transfer material conveying belt 333 is driven. A vibration wave motor is also used as the motor.

【００２０】振動波モータは、例えばリング状の弾性体
の片面側に電気−機械エネルギー変換素子としての圧電
素子を例えば接着剤により接着固定したものを振動体と
し、前記弾性体の他面側を駆動面とし、加圧手段を介し
て該駆動面に接触部材を加圧接触させ、前記圧電素子の
駆動用の圧電素子部に移相の異なる周波電圧を印加する
ことにより、例えば前記弾性体に曲げ振動を励起し、そ
の合成により駆動波としての進行波を形成し、これによ
り前記弾性体と前記接触部材とを摩擦力により相対移動
させるようにしている。The vibrating wave motor is, for example, a vibrating body in which a piezoelectric element as an electro-mechanical energy conversion element is adhered and fixed with, for example, an adhesive on one side of a ring-shaped elastic body, and the other side of the elastic body is used. A driving surface, and a contact member is brought into pressure contact with the driving surface via a pressing means, and by applying a frequency voltage having a different phase shift to the piezoelectric element portion for driving the piezoelectric element, for example, to the elastic body. The bending vibration is excited, and a traveling wave as a driving wave is formed by the synthesis thereof, whereby the elastic body and the contact member are relatively moved by a frictional force.

【００２１】図１は振動波モータを駆動制御するための
制御ブロック図、図２はその１つの振動波モータにおけ
る制御部を示している。図３は振動波モータの制御フロ
ーチャートである。FIG. 1 is a control block diagram for controlling the driving of the vibration wave motor, and FIG. 2 shows a control section in one vibration wave motor. FIG. 3 is a control flowchart of the vibration wave motor.

【００２２】本実施の形態において、感光体駆動に振動
波モータ６０１−１〜６０１−４（Ｍｌ〜Ｍ４）が使用
され、転写材搬送搬送ベルトの駆動には振動波モータ６
０１−５（Ｍ５）が使用される。In the present embodiment, the vibration wave motors 601-1 to 601-4 (M1 to M4) are used for driving the photosensitive member, and the vibration wave motor 6 is used for driving the transfer material conveying and conveying belt.
01-5 (M5) is used.

【００２３】図１において、それぞれの振動波モータに
は振動波モータの回転速度を検知するためのエンコーダ
（６０２−１〜６０２−５）がそれぞれに接続されてお
り、振動波モータは図２に示す振動波モータ制御部が５
つ（本実施の形態の場合は振動波モータを５個使用して
いるため）を含む振動波モー夕制御部６０３により制御
されている。In FIG. 1, encoders (602-1 to 602-5) for detecting the rotational speed of the vibration wave motor are connected to the respective vibration wave motors. The vibration wave motor control unit shown is 5
(In the case of the present embodiment, five vibration wave motors are used).

【００２４】この振動波モータ部の制御は後に図２を使
用して説明する。この振動波モータ制御部６０３は、演
算制御部６０５によって制御され、この演算制御部６０
４には制御プログラムが記憶されるＲＯＭ６０５と、演
算制御部６０４のワーク等に使用されるＲＡＭ６０６お
よび、後述される回転時間もしくは印字枚数など変化す
る制御パラメータが記憶される、バックアップ可能なＲ
ＡＭ６０７（通電をカットした場合でもバックアップ電
池やＦＬＡＳＨメモリ、ＥＥＰＲＯＭ）が接続されてい
る。また、操作のためのキーや表示のための操作部（画
像形成装置の操作部３００を兼用）３００も制御する。The control of the vibration wave motor will be described later with reference to FIG. The vibration wave motor control unit 603 is controlled by the arithmetic control unit 605.
Reference numeral 4 denotes a ROM 605 storing a control program, a RAM 606 used for a work or the like of the arithmetic control unit 604, and a control parameter such as a rotation time or a number of prints, which will be described later.
AM607 (a backup battery, a flash memory, and an EEPROM even when the power is cut off) is connected. Also, it controls an operation key and an operation unit for display (also used as the operation unit 300 of the image forming apparatus) 300.

【００２５】図２において、振動波モータの制御につい
て説明する。演算制御部６０４で本振動波モータ制御部
の目標速度設定部２０１に目標速度が設定される。更
に、演算制御部６０４からのスタート信号により振動波
モータの制御が目標設定値に応じて開始される。この
時、目標速度設定部から設定速度に応じた目標値が速度
制御回路２０２に設定される。速度制御回路には振動波
モータの回転の状態を検知するエンコーダ６０２の信号
が入力され、速度制御回路２０２において、速度の目標
値とエンコーダ信号によって求められた振動波モータの
速度によって周波数設定回路２０３およびパルス幅設定
回路２０４に設定され、パルス幅設定回路２０４におい
て、設定されたパルス幅と周波数設定回路２０３からの
周波数で振動波モータ６０１を制御する。Referring to FIG. 2, control of the vibration wave motor will be described. The arithmetic control unit 604 sets a target speed in a target speed setting unit 201 of the vibration wave motor control unit. Further, the control of the vibration wave motor is started according to the target set value by a start signal from the arithmetic control unit 604. At this time, a target value according to the set speed is set in the speed control circuit 202 from the target speed setting unit. A signal of the encoder 602 for detecting the rotation state of the vibration wave motor is input to the speed control circuit, and the speed control circuit 202 sets a frequency setting circuit 203 according to a target value of the speed and the speed of the vibration wave motor obtained from the encoder signal. The pulse width setting circuit 204 controls the vibration wave motor 601 with the set pulse width and the frequency from the frequency setting circuit 203.

【００２６】振動波モータ６０１が目標速度に対して、
規定範囲内に収まっている場合、これを示す速度ロック
信号が速度制御回路２０２から演算制御部６０４に出力
されており、演算制御部６０４によって、振動波モータ
が規定速度で回転していることが検知可能となる。When the vibration wave motor 601 moves to the target speed,
If it is within the specified range, a speed lock signal indicating this is output from the speed control circuit 202 to the arithmetic control unit 604, and the arithmetic control unit 604 indicates that the vibration wave motor is rotating at the specified speed. It becomes detectable.

【００２７】図３において、本実施の形態の特徴であ
る、規定速度より遅い回転数で回転した場合にリカバー
モードを動作させるシーケンスを説明する。Referring to FIG. 3, a description will be given of a sequence of operating the recovery mode when rotating at a rotation speed lower than the specified speed, which is a feature of the present embodiment.

【００２８】印字シーケンスが開始されると、まずステ
ップ３−２において、シーケンスの速度が判定される。
本実施の形態では、印字される用紙において１０５ｇ紙
程度までは普通紙とし、それより重い〈厚い紙）は厚紙
とし、ＯＨＰ用紙などのモードによって印字速度を切り
替えるものとし、普通紙の場合は規定速で印字し、厚紙
の場合は規定速度に対して１／２速で印字し、ＯＨＰ用
紙の場合は規定速度に対して１／４速で印字するものと
する。なおこれはあくまでも、例であり、規定速度に対
して遅い速度のモードがある場合の処理である。When the printing sequence is started, first, in step 3-2, the speed of the sequence is determined.
In the present embodiment, plain paper is used for printing up to about 105 g paper, heavy paper (thick paper) is thick paper, and the printing speed is switched according to the mode of OHP paper or the like. Printing at a speed of 1/2 for thick paper, and printing at 1/4 of a speed for OHP paper. Note that this is only an example, and is a process in a case where there is a mode having a speed lower than the specified speed.

【００２９】ステップ３−２で厚紙と判断された場合、
印字モード設定で１／２速記録と判断し、回転速度設定
ステップ３−２によって規定速度の１／２速のデータが
演算制御部６０４から振動波モータ制御部６０３の目標
速度設定部２０１に設定される。If it is determined in step 3-2 that the sheet is thick paper,
It is determined that the printing mode setting is 1/2 speed recording, and the 1/2 speed data of the specified speed is set in the target speed setting unit 201 of the vibration wave motor control unit 603 from the arithmetic control unit 604 by the rotation speed setting step 3-2. Is done.

【００３０】つぎに、モータ回転開始ステップ３−４で
振動波モータ６０１を回転させるため、振動波モータ制
御部６０３の目標設定部２０１に起動がかかり、振動波
モータの制御が開始される。Next, in order to rotate the vibration wave motor 601 in the motor rotation start step 3-4, the target setting unit 201 of the vibration wave motor control unit 603 is activated, and control of the vibration wave motor is started.

【００３１】ステップ３−５で、振動波モータ制御部６
０３の速度制御回路２０２からの速度ロック信号を演算
制御部６０４で検知し、所定速度で回転していることを
確認した後印字動作が開始される。In step 3-5, the vibration wave motor controller 6
The print control operation is started by detecting the speed lock signal from the speed control circuit 202 of No. 03 in the arithmetic and control unit 604 and confirming that it is rotating at a predetermined speed.

【００３２】ステップ３−６で、印字終了を確認するま
で、振動波モータは規定速の１／２速で回転しつづけ、
終了を判断すると、ステップ３−７で印字動作中の振動
波モータの回転速度が規定速度より遅いか否かを判断
し、規定速度の場合ステップ３−１１へ、規定速度より
低い回転数で回転していた場合には、ステップ３−８
で、回転速度をＲＡＭ６０７に記憶されているリカバー
回転数に振動波モータの回転速度を設定する。In step 3-6, the vibration wave motor continues to rotate at half the specified speed until the end of printing is confirmed.
When the end is determined, it is determined in step 3-7 whether or not the rotational speed of the vibration wave motor during the printing operation is lower than the specified speed. If so, step 3-8
Then, the rotation speed of the vibration wave motor is set to the recovery rotation speed stored in the RAM 607.

【００３３】通常は、規定速度で十分リカバー可能な場
合が多く、本実施の形態では、規定速度に回転速度を設
定し、ステップ３−９で設定した速度に回転しているこ
とを確認した後、所定時間振動波モータ６０１を回転さ
せる。規定時間回転した後ステップステップ３−１１で
振動波モータの停止が、演算制御部６０４から振動波モ
ータ制御部６０３の目標設定部２０１に停止信号が入力
され、実行され印字処理が終了する。Normally, it is often possible to sufficiently recover at the specified speed. In the present embodiment, the rotation speed is set to the specified speed, and after confirming that the motor is rotating at the speed set in step 3-9. The vibration wave motor 601 is rotated for a predetermined time. After the rotation for the specified time, the stop of the vibration wave motor is input to the target setting unit 201 of the vibration wave motor control unit 603 from the arithmetic control unit 604 in step 3-11, and the printing process is completed.

【００３４】（第２の実施の形態）図５は第２の実施の
形態を表わす制御フローチヤートである。ハード的構成
は第１の実施の形態と同様である。図５に示す制御フロ
ーチヤートに従って、記録装置を制御する。(Second Embodiment) FIG. 5 is a control flow chart showing a second embodiment. The hardware configuration is the same as in the first embodiment. The printing apparatus is controlled according to the control flowchart shown in FIG.

【００３５】本実施の形態の特徴は、規定速度より遅い
回転数で、回転した場合にリカバーモードを動作させる
ものであって、本実施の形態は規定回転速度以下で回転
した時間もしくはコピー（印字）枚数に応じてリカバー
モードを入れる。The feature of the present embodiment is that the recover mode is operated when the motor rotates at a rotation speed lower than the specified speed. ) Enter the recovery mode according to the number of sheets.

【００３６】印字シーケンスが開始されると、まずステ
ップ５−２において、シーケンスの速度が判定される・
本実施例では、印字される用紙において１０５ｇ紙程度
までは普通紙とし、それより重い（厚い紙）は厚紙と
し、ＯＨＰ用紙などのモードによって印字速度を切り替
えるものとし、普通紙の場合は規定速で印字し、厚紙の
場合は規定速度に対して１／２速で印字し、ＯＨＰ用紙
の場合は規定速度に対して１／４速で印字するものとす
る。これはあくまでも、例であり、規定速度に対して遅
い速度のモードがある場合の処理である。When the printing sequence is started, first, in step 5-2, the speed of the sequence is determined.
In this embodiment, plain paper is used for printing up to about 105 g paper, thick paper is used for heavier paper (thick paper), and the printing speed is switched according to a mode such as OHP paper. In the case of thick paper, printing is performed at 1/2 speed with respect to the specified speed, and in the case of OHP paper, printing is performed at 1/4 speed with respect to the specified speed. This is only an example, and is a process in a case where there is a mode with a speed lower than the specified speed.

【００３７】ステップ５−２で厚紙と判断された場合、
印字モード設定で１／２速記録と判断し、回転速度設定
ステップ５−２によって、規定速度の１／２速のデータ
が演算制御部６０４から振動波モータ制御部６０３の目
標速度設定部２０１に設定される。If it is determined in step 5-2 that the sheet is thick paper,
It is determined that the printing mode setting is 1/2 speed recording, and in the rotation speed setting step 5-2, the 1/2 speed data of the specified speed is transferred from the arithmetic control unit 604 to the target speed setting unit 201 of the vibration wave motor control unit 603. Is set.

【００３８】つぎに、モータ回転開始ステップ３−４で
振動波モータ６０１を回転させるため、振動波モータ制
御部６０３の目標設定部２０１に起動がかかり、振動波
モータの制御が開始される。Next, in order to rotate the vibration wave motor 601 in the motor rotation start step 3-4, the target setting unit 201 of the vibration wave motor control unit 603 is activated, and control of the vibration wave motor is started.

【００３９】ステップ５−５で、振動波モータ制御部６
０３の速度制御回路２０２からの速度ロック信号を演算
制御部６０４で検知し、所定速度で回転していることを
確認した後印字動作が開始される。In step 5-5, the vibration wave motor controller 6
The print control operation is started by detecting the speed lock signal from the speed control circuit 202 of No. 03 in the arithmetic and control unit 604 and confirming that it is rotating at a predetermined speed.

【００４０】ステップ５−６で、モータの回転時間もし
くは印字枚数を計数するための計数手段を動作させる。
この時、計数手段は、以前の動作条件での回転時間およ
び印字枚数条件をもとに計数が加算される。この以前の
データはバックアップ可能なＲＡＭに記憶されている。
この計数動作は印字が終了されるまで続けられる。な
お、この計数データは回転数毎もしくは、規定回転数よ
り遅い場合の計数データというように、回転条件をも含
んでおり、規定回転以上で動作させた場合は、この計数
処理が必要でないため動作しないように構成されてい
る。In step 5-6, the counting means for counting the rotation time of the motor or the number of printed sheets is operated.
At this time, the counting means adds a count based on the rotation time and the number of printed sheets under the previous operating conditions. The previous data is stored in a RAM that can be backed up.
This counting operation is continued until printing is completed. This counting data also includes rotation conditions, such as counting data for each rotation speed or when the rotation speed is lower than the specified rotation speed. Not configured.

【００４１】また、このステップでは、規定速度に対し
て遅い速度のモードの時におけるステップ５−４から５
−７までの時間又は枚数のみを計数するようにしても良
い。本実施の形態の場合は、印字終了を確認するまで、
振動波モータは規定速の１／２速で回転し続け、この間
の動作時間もしくは印字枚数を計数している。In this step, steps 5-4 to 5-5 in the mode in which the speed is lower than the specified speed are performed.
Only the time up to -7 or the number of sheets may be counted. In the case of this embodiment, until the end of printing is confirmed
The vibration wave motor keeps rotating at half the specified speed, and counts the operation time or the number of prints during this period.

【００４２】終了を判断すると、ステップ５−８に移
り、印字モードが規定速度より遅いモードかどうか判断
し、遅いモードで動作していた場合には時間計数値もし
くはコピー枚数計数値が規定値以上かどうか判断する。
例えば、動作時間が１０分以上もしくは２００枚印字以
上等と規定しておき、この値を超えた場合のみステップ
５−９の処理を行い、そうでない場合は、ステップ５−
１３の停止処理を行う。ステップ５−９で、回転速度を
リカバー回転数に振動波モータの回転速度を設定する。
通常は、規定速度で十分リカバー可能な場合が多く（印
字モードと異なる回転速度でも問題ないことは言うまで
もない。）、本実施の形態では、規定速度に回転速度を
設定し、ステップ５−９で設定した速度に回転している
ことを確認（ステップ５−１０）した後、所定時間振動
波モータ６０１を回転させる（ステップ５−１１）。When it is determined that the printing has been completed, the process proceeds to step 5-8, where it is determined whether the printing mode is slower than the specified speed. Determine whether or not.
For example, the operation time is specified as 10 minutes or more or 200 sheets or more, and the processing of step 5-9 is performed only when the operation time exceeds this value.
13 is stopped. In step 5-9, the rotational speed of the vibration wave motor is set to the rotational speed for recovering the rotational speed.
Normally, it is often possible to sufficiently recover at the specified speed (it goes without saying that a rotation speed different from the print mode does not matter). In this embodiment, the rotation speed is set to the specified speed, and the process proceeds to step 5-9. After confirming that the motor is rotating at the set speed (step 5-10), the vibration wave motor 601 is rotated for a predetermined time (step 5-11).

【００４３】ステップ５−１２において、上記時間計数
値及びコピー枚数計数値をクリアしてバックアップＲＡ
Ｍに記憶する。もしくは、規定時間もしくは規定コピー
枚数を前期計数結果より減算した値を同様にバックアッ
プＲＡＭに記憶する。In step 5-12, the time count value and the copy sheet count value are cleared and the backup RA
Store it in M. Alternatively, a value obtained by subtracting the specified time or the specified number of copies from the counting result in the previous period is similarly stored in the backup RAM.

【００４４】ステップ５−１２において、振動波モータ
の停止が、演算制御部６０４から振動波モータ制御部６
０３の目標設定部２０１に停止信号が入力され、実行さ
れ印字処理が終了する。In step 5-12, the stop of the vibration wave motor is instructed from the arithmetic control unit 604 to the vibration wave motor control unit 6.
A stop signal is input to the target setting unit 201 of No. 03, which is executed and the printing process ends.

【００４５】さらに、リカバーモードの所定時間は、ス
テップ５−８で判断された時間計数値およびコピー（記
録）枚数計数値に応じて可変することも可能であり、上
記計数値が長くなるほどリカバーモードで回転させる時
間を長くするように、ステップ５−１１の所定時間ディ
レイを設定する。但し、リカバーに必要な時間の最大時
間を規定しており、それ以上のリカバー処理は動作しな
いように、所定時間ディレイが設定されるように動作す
ることも可能である。Further, the predetermined time in the recovery mode can be varied according to the time count value determined in step 5-8 and the copy (recording) number count value. A predetermined time delay in step 5-11 is set so as to lengthen the time for rotation. However, the maximum time required for the recovery is specified, and the operation can be performed such that a predetermined time delay is set so that the recovery process does not operate any longer.

【００４６】（第３の実施の形態）図６は第３の実施の
形態を表わす制御フローチャートである。ハード的構成
は第１の実施の形態と同じで実現可能である。図６に示
す制御フローチャートにしたがって、記録装置を制御す
る。(Third Embodiment) FIG. 6 is a control flowchart showing a third embodiment. The hardware configuration can be realized in the same manner as in the first embodiment. The printing apparatus is controlled according to the control flowchart shown in FIG.

【００４７】図６において、本実施の形態は規定速度よ
り遅い回路数で、回転した場合にリカバーモードを動作
させる際に、規定回転速度以下で回転した時間もしくは
コピー（印字）枚数に応じてリカバーモードを入れる場
合、印字シーケンス中に印字動作を中断ることを可能と
したものである。In FIG. 6, in the present embodiment, when the recovery mode is operated with the number of circuits lower than the specified speed and the motor rotates, the recovery is performed in accordance with the rotation time at the specified speed or less or the number of copies (prints). When the mode is entered, the printing operation can be interrupted during the printing sequence.

【００４８】印字シーケンスが開始されると、まずステ
ップ６−２において、シーケンスの速度が判定される。When the printing sequence is started, first, in step 6-2, the speed of the sequence is determined.

【００４９】本実施の形態では、印字される用紙におい
て１０５ｇ紙程度までは普通絶とし、それより重い（厚
い紙）は厚紙とし、ＯＨＰ用紙などのモードによって印
字速度を切り替えるものとし、普通紙の場合は規定速で
印字し、厚紙の場合は規定速度に対して１／２速で印字
し、ＯＨＰ用紙の場合は規定速度に対して１／４速で印
字するものとするが、これはあくまでも・例であり、規
定速度に対して遅い速度のモードがある場合の処理であ
る。In the present embodiment, it is assumed that the paper to be printed is normally up to about 105 g paper, the heavier (thick paper) is thick paper, and the printing speed is switched according to the mode of OHP paper or the like. In this case, printing is performed at a specified speed. For thick paper, printing is performed at 1/2 speed with respect to the specified speed. For OHP paper, printing is performed at 1/4 speed with respect to the specified speed. -This is an example, and is a process when there is a mode with a speed lower than the specified speed.

【００５０】ステップ６−２で厚紙と判断された場合、
印字モード設定で１／２速記録と判断し、回転速度設定
ステップ６−２によって規定速度の１／２速のデータが
演算制御部６０４から振動波モータ制御部６０３の目標
速度設定部２０１に設定される。If it is determined in step 6-2 that the sheet is thick paper,
It is determined that the printing mode setting is 1/2 speed recording, and the data of 1/2 speed of the specified speed is set from the arithmetic control unit 604 to the target speed setting unit 201 of the vibration wave motor control unit 603 in the rotation speed setting step 6-2. Is done.

【００５１】つぎに、モータ回転開始ステップ６−４
で、振動波モータ６０１を回転させるため、振動型モー
タ制御部６０３の目標設定部２０１に起動がかかり、振
動波モータの制御が開始れる。Next, motor rotation start step 6-4
Then, in order to rotate the vibration wave motor 601, the target setting unit 201 of the vibration type motor control unit 603 is activated, and control of the vibration wave motor is started.

【００５２】ステップ６−５で、振動波モータ制御部６
０３の速度制御回路２０２からの速度ロック信号を演算
制御部６０４で検知し、所定速度で回転していることを
確認した後印字動作が開始される。At step 6-5, the vibration wave motor controller 6
The print control operation is started by detecting the speed lock signal from the speed control circuit 202 of No. 03 in the arithmetic and control unit 604 and confirming that it is rotating at a predetermined speed.

【００５３】ステップ６−６で、モー夕の回転時間もし
くは印字枚数を計数するための計数手段を動作させる。
この時、計数手段は、以前の動作条件での回転時間およ
び印字回数条件をもとに計数が加算される。または、遅
い速度での回転時かんん又は枚数のみを計数するように
しても良い。In step 6-6, the counting means for counting the rotation time of the motor or the number of printed sheets is operated.
At this time, the counting means adds a count based on the rotation time and the number of printing times under the previous operating conditions. Alternatively, only the number of rotations or the number of rotations at a low speed may be counted.

【００５４】この以前のデータは、バックアップ可能な
ＲＡＭに記憶されている。この計数動作は印字が終了さ
れるまでつづけられる。なお、この計数データは回転数
毎もしくは、規定回転数より遅い場合の計数データとい
うように、回転条件をも含んでおり、規定回転以上で、
動作させた場合は、この計数処理が必要でないため動作
しないように構成されている。本実施の形態の場合は、
印字終了を確認するまで、振動波モータは規定速の１／
２速で回転し続け、この間の動作時間もしくは印字枚数
を計数している。終了を判断すると、ステップ６−１６
のステップに移る。印字中はステップ６−８で印字モー
ドが規定速度より遅いモードかどうか判断し、遅いモー
ドで動作していた場合には時間計数値もしくはコピー枚
数計数値が規定値以上かどうか判断する。例えば、動作
時間が１０分以上もしくは２００枚印字以上等と規定し
ておき、この値を超えた場合のみステップ６−９の処理
を行い、そうでない場合は、ステップ６−７に戻る。The previous data is stored in a RAM that can be backed up. This counting operation is continued until printing is completed. Note that this count data also includes a rotation condition, such as count data for each rotation speed or when the rotation speed is lower than the specified rotation speed.
When operated, this counting process is not necessary, so that it is not operated. In the case of this embodiment,
Until the end of printing is confirmed, the vibration wave motor
The rotation is continued at the second speed, and the operation time or the number of prints during this period is counted. When the end is determined, step 6-16
Go to step. During printing, it is determined in step 6-8 whether the printing mode is slower than the specified speed. If the printing mode is operating in the slower mode, it is determined whether the time count value or the copy sheet count value is equal to or greater than the specified value. For example, the operation time is specified as 10 minutes or more or 200 sheets or more, and the process of step 6-9 is performed only when the value exceeds this value. Otherwise, the process returns to step 6-7.

【００５５】ステップ６−９で印字シーケンスに中断処
理を指令し、ステップ６−１０で回転速度をリカバー回
転数に振動波モータの回転速度を設定する。通常は、規
定速度で十分リカバー可能な場合が多く（印字モードと
異なる速度でも問題ないことは言うまでもない。）、本
実施の形態では、規定速度に回転速度を設定し、ステッ
プ６−１０で設定した速度に回転していることを確認
（ステップ６−１１）した後、所定時間振動波モータ６
０１を回転させる（ステップ６−１２）。In step 6-9, an interruption process is instructed to the print sequence, and in step 6-10, the rotational speed of the vibration wave motor is set to the rotational speed to recover the rotational speed. Normally, in many cases, the specified speed can be sufficiently recovered (it goes without saying that a speed different from the print mode does not matter). In the present embodiment, the rotation speed is set to the specified speed, and set in step 6-10. After confirming that the motor is rotating at the specified speed (step 6-11), the vibration wave motor 6
01 is rotated (step 6-12).

【００５６】ステップ６−１３において、上記時間計数
値及びコピー枚数計数値をクリアしてバックアップＲＡ
Ｍに記憶する。At step 6-13, the time count value and the copy number count value are cleared and the backup RA
Store it in M.

【００５７】ステップ６−１４で回転速度を前期中断し
た印字モードの回転数に回転速度をセットし、ステップ
６−１５で印字シーケンスの中断を解除し、印字動作を
再開しステップ６−７に戻る。In step 6-14, the rotation speed is set to the rotation speed of the print mode in which the rotation speed was interrupted in the previous period. In step 6-15, the interruption of the printing sequence is canceled, the printing operation is resumed, and the process returns to step 6-7. .

【００５８】ステップ６−１６で時間計数及びコピー枚
数計数の動作を停止し、ステップ６−１６で振動波モー
タの停止が、演算制御部６０４から振動波モータ制御部
６０３の目標設定部２０１に停止信号が入力され、実行
され印字処理が終了する。In step 6-16, the operation of counting the number of times and the number of copies is stopped. In step 6-16, the stop of the vibration wave motor is stopped from the arithmetic control unit 604 to the target setting unit 201 of the vibration wave motor control unit 603. The signal is input, executed, and the printing process ends.

【００５９】さらに、リカバーモードの所定時間は、ス
テップ６−８で判断された時間計数値及びコピー（記
録）枚数計数値に応じて、可変することも可能であり、
上記計数値が長くなるほどリカバーモードで回転させる
時間を長くするようにステップ６−１２の所定時間ディ
レイを設定する。但し、リカバーに必要な時間の最大時
間を規定しており、それ以上のリカバー処理は動作しな
いように、所定時間ディレイが設定されるように動作す
ることも可能である。Further, the predetermined time in the recover mode can be changed according to the time count value and the copy (recording) sheet count value determined in step 6-8.
A predetermined time delay in step 6-12 is set so that the longer the count value is, the longer the time for rotating in the recovery mode is. However, the maximum time required for the recovery is specified, and the operation can be performed such that a predetermined time delay is set so that the recovery process does not operate any longer.

【００６０】なお、上記した第１〜第３の実施の形態に
おいて、操作部３００にリカバーモード中の表示を行う
ようにすることにより、使用者に装置の状態を伝えるこ
とことができる。In the first to third embodiments, the display of the recovery mode is displayed on the operation unit 300, so that the user can be informed of the state of the apparatus.

【００６１】[0061]

【発明の効果】以上説明したように、振動波モータの接
触面の不具合を、自動的に回復させることができ、振動
波モータの寿命を延ばすことができる。また、画像形成
装置においては、良好な画像を提供することができる。As described above, the trouble of the contact surface of the vibration wave motor can be automatically recovered, and the life of the vibration wave motor can be extended. Further, in the image forming apparatus, a good image can be provided.

[Brief description of the drawings]

【図１】本発明の第１の実施の形態を示す全体の制御ブ
ロック図。FIG. 1 is an overall control block diagram showing a first embodiment of the present invention.

【図２】図１の振動波モータ制御部のブロック図。FIG. 2 is a block diagram of a vibration wave motor control unit in FIG. 1;

【図３】図１の制御ブロックの動作を示すフローチャー
ト。FIG. 3 is a flowchart showing the operation of a control block in FIG. 1;

【図４】本発明の第１の実施の形態の画像形成装置の概
略図。FIG. 4 is a schematic diagram of the image forming apparatus according to the first embodiment of the present invention.

【図５】第２の実施の形態の動作を示すフローチャー
ト。FIG. 5 is a flowchart showing the operation of the second embodiment.

【図６】第３の実施の形態の動作を示すフローチャー
ト。FIG. 6 is a flowchart showing the operation of the third embodiment.

[Explanation of symbols]

３００操作部３４２〜３４５感光ドラム３３３転写材搬送ベルト６０１−１〜６０１−５振動波モータ６０２−１〜６０２−５エンコーダ６０３振動波モータ制御部６０４演算部６０５ＲＯＭ６０６ＲＡＭ６０７バックアップＲＡＭ 300 Operation unit 342 to 345 Photosensitive drum 333 Transfer material transport belt 601-1 to 601-5 Vibration wave motor 602-1 to 602-5 Encoder 603 Vibration wave motor control unit 604 Operation unit 605 ROM 606 RAM 607 Backup RAM

フロントページの続きＦターム(参考） 2H027 DA16 DA39 DA45 DA46 EC06 EC09 ED02 ED16 EE03 EE04 FA28 ZA01 2H072 AA16 AA30 AB06 JA08 5H680 AA04 AA05 AA12 BB03 BC04 CC05 CC07 DD15 DD23 DD35 DD53 DD72 DD87 EE23 FF08 FF23 FF25 FF30 GG20 Continued on the front page F term (reference) 2H027 DA16 DA39 DA45 DA46 EC06 EC09 ED02 ED16 EE03 EE04 FA28 ZA01 2H072 AA16 AA30 AB06 JA08 5H680 AA04 AA05 AA12 BB03 BC04 CC05 CC07 DD15 DD23 DD35 DD53 DD72 DD87 EE23 FF25 FF23 FF25 FF23 FF25

Claims

[Claims]

1. A drive control method of a vibration wave motor for performing relative drive with a driven body using a vibration wave motor as a drive source, wherein the friction drive portion of the vibration wave motor is rotated at a rotational speed that requires recovery. A drive control method for a vibration wave motor that drives the vibration wave motor at a rotation speed capable of recovering a friction drive portion of the vibration wave motor when rotated.

2. A method for controlling a vibration wave motor to perform relative driving with a driven body using the vibration wave motor as a drive source, wherein the friction drive portion of the vibration wave motor is rotated at a rotational speed required to recover. A drive control method for a vibration wave motor that drives the vibration wave motor at a rotation speed that enables the friction drive portion of the vibration wave motor to be recovered when the motor rotates for a predetermined time or more.

3. A drive control method for a vibration wave motor for performing relative drive with a driven body using the vibration wave motor as a drive source, wherein the friction drive portion of the vibration wave motor is rotated at a rotational speed that requires recovery. A drive control method for a vibration wave motor that drives the vibration wave motor at a rotation speed capable of recovering a friction drive portion of the vibration wave motor when a predetermined operation is performed.

4. A drive control method for a vibration wave motor for performing relative drive with a driven body using the vibration wave motor as a drive source, wherein the friction drive portion of the vibration wave motor is rotated at a rotational speed that requires recovery. A drive control method for a vibration wave motor that drives the vibration wave motor at a rotation speed capable of recovering a friction drive portion of the vibration wave motor when a predetermined operation is performed a predetermined number of times or more.

5. A driving control method of a vibration wave motor for driving a driven body using a vibration wave motor as a driving source, wherein the driving operation of the driven body is performed when the vibration wave motor rotates at a required number of rotations for recovery. A driving control method of the vibration wave motor that drives the vibration wave motor at a rotation speed at which the friction drive portion of the vibration wave motor can be recovered after the end of the operation.

6. A driving control method for a vibration wave motor that drives a driven body using the vibration wave motor as a driving source, wherein the vibration wave motor is driven at a required rotational speed for a predetermined time or more. A drive control method for a vibration wave motor that drives the vibration wave motor at a rotation speed at which a friction drive portion of the vibration wave motor can be recovered after the driving operation of the body is completed.

7. A drive control method for a vibration wave motor that drives a driven body using the vibration wave motor as a drive source, wherein the vibration wave motor drives the driven body at a rotation speed required for recovery, and A drive control method for a vibration wave motor that drives the vibration wave motor at a rotation speed at which a friction drive portion of the vibration wave motor can be recovered after the driving operation of the body is completed.

8. A driving control method of a vibration wave motor for driving a driven body using a vibration wave motor as a driving source, wherein the driving operation of the driven body is performed when the vibration wave motor rotates at a required number of rotations for recovery. And a drive control method for the vibration wave motor that drives the vibration wave motor at a rotation speed at which the friction drive portion of the vibration wave motor can be recovered.

9. A drive control method for a vibration wave motor that drives a driven body using the vibration wave motor as a drive source, wherein the vibration wave motor is driven at a required rotation speed for a predetermined time or more. A drive control method for a vibration wave motor that drives the vibration wave motor at a rotation speed capable of recovering a friction drive portion of the vibration wave motor by interrupting a body driving operation.

10. A drive control method for a vibration wave motor that drives a driven body using a vibration wave motor as a drive source, wherein the vibration wave motor drives the driven body at a rotation speed required for recovery. A drive control method for a vibration wave motor that drives the vibration wave motor at a rotation speed at which the frictional drive portion of the vibration wave motor can be recovered by interrupting the driving operation of the vibration wave motor.

11. A time period for driving the vibration wave motor at a rotation speed at which the friction drive portion of the vibration wave motor can be recovered is determined according to a time period at which the vibration wave motor rotates at a required rotation speed. The drive control method for a vibration wave motor according to claim 6 or 9, wherein

12. A time period for driving the vibration wave motor at a rotation speed at which the friction drive portion of the vibration wave motor can be recovered to a prescribed operation in which the vibration wave motor is driven at a rotation speed required for recovery. The drive control method for a vibration wave motor according to claim 7, wherein the drive control method is determined according to the condition.

13. When the vibration wave motor is driven at a rotation speed at which the friction drive portion of the vibration wave motor can be recovered, the vibration wave motor is notified by a notification means. 13. The drive control method for a vibration wave motor according to any one of 12.

14. A vibration wave motor device that performs relative driving with respect to a driven body by using a vibration wave motor as a driving source, wherein: a first mode for driving at a first speed; A second mode in which driving is performed at a lower speed than the first mode;
A vibration wave motor device for driving a vibration wave motor at a speed higher than a speed in a mode.

15. The vibration wave motor device according to claim 14, wherein the motor is driven at the high speed when the driving time in the second mode is longer than a predetermined time.

16. The vibration wave motor device according to claim 14, wherein the motor is driven at the high speed when the processing by the driving in the second mode is performed a predetermined number of times or more.

17. When the driving time in the second mode is longer than a predetermined time, the processing in the second mode is interrupted even if the processing in the second mode is not completed, and the motor is driven at the high speed. The vibration wave motor device according to claim 15, wherein the vibration wave motor device is driven.

18. When the processing by driving in the second mode is performed a predetermined number of times or more, the processing in the second mode is interrupted even if the processing in the second mode is not completed, and the motor is stopped. 17. The vibration wave motor device according to claim 16, wherein the vibration wave motor device is driven at a high speed.

19. A target speed is compared with detection information from speed detecting means for detecting a rotational speed of a vibration wave motor for driving a driven body, and a drive signal to the vibration wave motor is adjusted so as to reach the target speed. In a drive control apparatus for a vibration wave motor that performs feedback control, a determination unit that determines whether the vibration wave motor is driven at a rotation speed that requires recovery, and a rotation speed of the vibration wave motor that is a rotation speed that requires recovery. Recovery control means for driving the vibration wave motor at a rotational speed at which the friction drive portion of the vibration wave motor can be recovered after the drive operation of the driven body is completed when the determination means determines that the vibration wave motor has been driven. A drive control device for a vibration wave motor, characterized in that:

20. A target speed is compared with detection information from speed detecting means for detecting a rotational speed of a vibration wave motor for driving a driven body, and a drive signal to the vibration wave motor is adjusted so as to reach the target speed. A drive control device for a vibration wave motor that performs feedback control, a determination unit that determines whether the vibration wave motor has been driven for a predetermined time or more at a rotation speed that requires recovery, and a rotation speed of the vibration wave motor that requires recovery. When the determining means determines that the driven member has been driven for a predetermined time or more at a rotational speed, after the driving operation of the driven body is completed, the vibration wave motor is driven at a rotational speed at which the friction drive portion of the vibration wave motor can be recovered. A drive control device for a vibration wave motor, comprising: a recovery control unit.

21. Detection information from speed detecting means for detecting a rotation speed of a vibration wave motor for driving a driven body is compared with a target speed, and a drive signal to the vibration wave motor is adjusted so as to reach the target speed. A drive control device for the vibration wave motor that performs feedback control, a determination unit that determines whether the vibration wave motor has driven the driven body at a rotation speed that requires recovery, and a rotation speed that requires the vibration wave motor to perform recovery. When the determining means determines that the driven body has been driven, the vibration wave motor is driven at a rotation speed at which the friction drive portion of the vibration wave motor can be recovered after the driving operation of the driven body is completed. A drive control device for a vibration wave motor, comprising: a recovery control unit.

22. Detection information from speed detecting means for detecting the rotational speed of a vibration wave motor driving a driven body is compared with a target speed, and a drive signal to the vibration wave motor is adjusted so as to reach the target speed. In a drive control apparatus for a vibration wave motor that performs feedback control, a determination unit that determines whether the vibration wave motor is driven at a rotation speed that requires recovery, and a rotation speed of the vibration wave motor that is a rotation speed that requires recovery. When the determination unit determines that the vibration wave motor has been driven, the drive operation of the driven body is interrupted, and the recovery control unit drives the vibration wave motor at a rotation speed that enables the friction drive portion of the vibration wave motor to be recovered. A drive control device for a vibration wave motor, comprising:

23. A target speed is compared with detection information from speed detecting means for detecting a rotational speed of a vibration wave motor for driving a driven body, and a drive signal to the vibration wave motor is adjusted so as to reach the target speed. In a drive control device for a vibration wave motor that performs feedback control, a determination unit that determines whether the vibration wave motor has been driven for a predetermined time or more at a rotation speed that requires recovery, and a determination unit that determines whether the vibration wave motor has a rotation speed that requires recovery. When the determination unit determines that the vibration wave motor has been driven, the drive operation of the driven body is interrupted, and the recovery control unit drives the vibration wave motor at a rotation speed at which the friction drive portion of the vibration wave motor can be recovered. A drive control device for a vibration wave motor, comprising:

24. A target speed is compared with detection information from speed detecting means for detecting a rotational speed of a vibration wave motor for driving a driven body, and a drive signal to the vibration wave motor is adjusted so as to reach the target speed. A drive control device for the vibration wave motor that performs feedback control, a determination unit that determines whether the vibration wave motor has driven the driven body at a rotation speed that requires recovery, and a rotation speed that requires the vibration wave motor to perform recovery. When the determination means determines that the driven body has been driven, the driving operation of the driven body is interrupted, and the vibration wave motor is driven at a rotation speed at which the friction drive portion of the vibration wave motor can be recovered. A drive control device for a vibration wave motor, comprising: a recovery control unit.

25. The recovery control means according to claim 16, wherein the vibration wave motor is rotated at a rotation speed at which the vibration wave motor needs to be recovered at a rotation speed at which the friction drive portion of the vibration wave motor can be recovered. 24. The drive control apparatus for a vibration wave motor according to claim 20, wherein the drive control apparatus is determined according to time.

26. The recovery control means according to claim 16, wherein the vibration wave motor is driven at a rotation speed at which the friction drive portion of the vibration wave motor can be recovered by the rotation speed at which the vibration wave motor needs to be recovered. 25. The drive control device for a vibration wave motor according to claim 21, wherein the determination is made in accordance with a prescribed operation for driving the driving body.

27. The vibration wave motor according to claim 19, further comprising a notifying unit for notifying when the vibration wave motor is driven at a rotation speed capable of recovering a friction drive portion of the vibration wave motor. A drive control device for the vibration wave motor according to any one of the above.

28. A vibration wave comprising a drive control device for a vibration wave motor according to claim 19, wherein the driven body is driven by using the vibration wave motor as a drive source. A device with a motor.

29. The vibration wave motor drive control device according to claim 19, wherein the vibration wave motor is used as a drive source of a driven body driven for image formation. An image forming apparatus, comprising:

30. The vibration wave motor according to claim 19, wherein the vibration wave motor is driven by a driving source of a plurality of image carriers driven for image formation. An image forming apparatus using a motor.

31. The vibration wave motor according to claim 19, wherein the vibration wave is supplied to each drive source of a plurality of image carriers driven for image formation. An image forming apparatus using a motor, and using the vibration wave motor as a drive source of a conveying unit that conveys a recording material to a transfer position of the plurality of image carriers.

32. A method according to claim 29, wherein the prescribed operation set in said determining means is the number of printed sheets.
Or the image forming apparatus according to 31;