JPS59109079A - Pressure controlling system of pressure fixing device - Google Patents
Pressure controlling system of pressure fixing deviceInfo
- Publication number
- JPS59109079A JPS59109079A JP21785482A JP21785482A JPS59109079A JP S59109079 A JPS59109079 A JP S59109079A JP 21785482 A JP21785482 A JP 21785482A JP 21785482 A JP21785482 A JP 21785482A JP S59109079 A JPS59109079 A JP S59109079A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- toner image
- loading
- axial direction
- width
- 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
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/20—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat
- G03G15/2092—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using pressure only
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fixing For Electrophotography (AREA)
- Controlling Sheets Or Webs (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、互いに圧接する一対の平行なローラによって
トナー像支持媒体を加圧搬送することによりトナー像を
その支持媒体上に定着する圧力定着装置の加圧制御方式
に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pressure control method for a pressure fixing device that fixes a toner image on a support medium by conveying the toner image support medium under pressure by a pair of parallel rollers that are in pressure contact with each other. It is something.
最近電子写真記録装置の定着装置として安全性、省エネ
性そしてウオームアツプ時間の不要などの利点により圧
力定着装置が用いられるようになってきた。しかし圧力
定着装置の一つの問題はかなりの高圧力をトナー支持媒
体に均一に加えることが必要であるため、装置が大型化
することである。Recently, pressure fixing devices have come to be used as fixing devices in electrophotographic recording apparatuses due to their advantages such as safety, energy saving, and no need for warm-up time. However, one problem with pressure fusing devices is that it is necessary to uniformly apply a fairly high pressure to the toner support medium, which increases the size of the device.
更に電子写真の記録方法において、一般的にl・ナー像
支持媒体への現像、転写は一方の片側が基準とされ、種
々の幅のトナー像支持媒体を圧力定着した場合、均一に
しわが発生せずに定着させるには限界があった。Furthermore, in the electrophotographic recording method, development and transfer to a toner image supporting medium are generally based on one side, and when toner image supporting media of various widths are pressure-fixed, wrinkles may occur uniformly. There was a limit to how well it could be established without any problems.
このような問題点に対し、出願人は特願昭56−845
00号において荷重手段をローラの軸方向に移動可能と
し、トナー像支持媒体の幅に応じて適正な加圧位置へ移
動可能な圧力定着装置を提案したが、媒体幅を指定する
だけで最適加圧位置へ荷重することができなかった。In response to these problems, the applicant filed a patent application in 1984-845.
In No. 00, we proposed a pressure fixing device in which the loading means is movable in the axial direction of the roller and can be moved to an appropriate pressure position according to the width of the toner image supporting medium. It was not possible to apply a load to the pressure position.
したがって本発明は、媒体幅を指定するだけで最適加圧
位置へ荷重するようにしたものである。Therefore, in the present invention, the load is applied to the optimum pressurizing position simply by specifying the medium width.
以下本発明の一実施例を図面により詳細に説明する。An embodiment of the present invention will be described in detail below with reference to the drawings.
第1図は本発明圧力定着装置の加圧制御方式の一実施例
を示す圧力定着装置の軸方向断面図、第2図は第1図の
A−A’断面図である。FIG. 1 is an axial sectional view of a pressure fixing device showing an embodiment of the pressure control method of the pressure fixing device of the present invention, and FIG. 2 is a sectional view taken along the line AA' in FIG.
第1図、第2図において定着ローラ1と対向ローラ2は
フレーム3に平行に支持されており、その一方の端部に
おいてギヤで結合されて同時に回転駆動されるようにな
っている。加圧パー18とフレーム3で囲まれる空間内
には複数の荷重手段4 、5、−6が設けられており、
荷重手段5,6は軸方向に移動可能で、定着ローラ1の
軸方向に移動するために駆動ベルト14.15が結合さ
れており、Aモータ16とBモータ17によって軸方向
に移動可能に設けられている。一方、葡重手段4は軸方
向に対して固定されている。In FIGS. 1 and 2, the fixing roller 1 and the opposing roller 2 are supported in parallel by a frame 3, and are connected at one end by a gear so that they are rotated at the same time. A plurality of loading means 4, 5, -6 are provided in the space surrounded by the pressurizing par 18 and the frame 3,
The loading means 5, 6 are movable in the axial direction and are connected to a drive belt 14, 15 for axial movement of the fixing roller 1, and are provided so as to be movable in the axial direction by an A motor 16 and a B motor 17. It is being On the other hand, the grape loading means 4 is fixed in the axial direction.
そして、荷重手段5,6にはそれぞれマグネット7が取
付られており、基板13上に取付られたホール素子セン
サ8〜12によって、荷1手段5゜6はその荷重位置が
検知され、トナー像支持媒体190幅によって所定の位
置に移動する。A magnet 7 is attached to each of the load means 5 and 6, and the load position of the load means 5 and 6 is detected by Hall element sensors 8 to 12 attached on the substrate 13, and the toner image is supported. The media 190 is moved to a predetermined position depending on its width.
次に具体的にどのような経過で荷重手段5,6が移動す
るかを説明する前に、まずトナー像支持媒体19の幅全
体に均一に圧力定着が出来る様にあらかじめ 基板13
上にホール素子センサ8〜12を配設しておく。Next, before explaining the specific process by which the loading means 5 and 6 move, first, the substrate 13 is prepared in advance so that pressure fixing can be applied uniformly over the entire width of the toner image supporting medium 19.
Hall element sensors 8 to 12 are arranged above.
第3図は前記荷重手段を駆動する回路のブロック図であ
り、20は第4図に示すホール素子センサ位置にあるA
、82個の第1ホール素子センサ群、21は同じく第4
図に示すC,D、E、F4個の第2ホール素子センサ群
、22は4ビツトのA記憶回路、23は2ビツトのB記
憶回路、24は図示せぬ媒体幅検出回路から送出された
3ビツトの媒体幅コードを記憶するC記憶回路、25は
第6図に示すように前記3ビツトの媒体幅コードをIo
−I2として入力されると、位置を示す6ビツトのコー
ドに変換し00−05として出力する変換回路、26は
変換回路25の出力0゜−03をラッチする第1ラッチ
回路、27は変換回路25の出力04.05をラッチす
る第−乏ラッチ回路、28および29は比較回路、30
〜33はフリップフロップ(以下ル今゛という)、34
はダート回路、35〜38はドライバである。FIG. 3 is a block diagram of a circuit for driving the loading means, and 20 is a block diagram of a circuit for driving the loading means, and numeral 20 indicates A at the Hall element sensor position shown in FIG.
, 82 first Hall element sensor groups, and 21 are the fourth
The second Hall element sensor group of four C, D, E, and F shown in the figure, 22 is a 4-bit A memory circuit, 23 is a 2-bit B memory circuit, and 24 is sent from a medium width detection circuit (not shown). A C storage circuit 25 stores the 3-bit medium width code, as shown in FIG.
- When inputted as I2, the conversion circuit converts it into a 6-bit code indicating the position and outputs it as 00-05. 26 is the first latch circuit that latches the output 0°-03 of the conversion circuit 25. 27 is the conversion circuit. A poor latch circuit latches the output 04.05 of 25, 28 and 29 are comparison circuits, 30
〜33 is a flip-flop (hereinafter referred to as ``le now''), 34
is a dart circuit, and 35 to 38 are drivers.
また、第5図は媒体幅と圧定位置との関係をコード化し
て示す図であり、ホール素子センサがn i I+とな
る位置が圧定位置である。Further, FIG. 5 is a diagram showing the relationship between the medium width and the pressing position in code, and the position where the Hall element sensor becomes n i I+ is the pressing position.
荷重手段4,5.6がイニシャル位置にあるとすると、
第1ホール素子センサ群20と第2ホール素子センサ群
21は第5図のイニシャル時の圧定信号と同じコードを
出力しA記憶回路22には” 0001 ’“、B記憶
回路23には“’ 10 ”を記憶する。次にB4ヨコ
の媒体幅がセットされた場合、C記憶回路24には’o
oo”がセットされる。さらに変換回路25を経て第1
ラッチ回路26には’oioo’“、第2ラッチ回路2
7には“01°゛が出力される。そして出力“’010
0’”とA記憶回路22の出力″0001’“が比較回
路28で比較され、〉の出力がF/F 31にセットさ
れる。更に出力゛°01′“とB記憶回路23の出力″
10″が比較回路29で比較されくの出力がF/F 3
2にセットされる。そして、モータスタート信号が入力
されるとケ゛−ト回路34が開きドライバ35〜38の
うちモータA(CwON)ノドライ 、バ36とモータ
B(CCwON)ノトライバ37が動作し、モータA1
6は時計方向に、モータB17は反時計方向に動く。こ
れにより圧定ボッジョン位置信号が変化し、この圧定ポ
ジション位置信号と6ビツト変換コード(A + B−
Os + 04 + C−F=03〜Oo )が各々一
致した時点でモータはストップする。そして印字開始が
行なわれ、B4ヨコサイズの支持媒体が現像、転写、定
着の工程を通って印刷される。途中で媒体幅がA4タテ
に変わった場合なども同様に第6図の変換図と現在の圧
定ポソシミン位置信号と比較されドライバーのモータA
(CCWON ) (7)ドライバ35トモータB(
CwON)のドライバ38に出力し動作する。なお、モ
ータスター) <=号及び印字動作は第7図のタイムチ
ャートで行なわれる。Assuming that the loading means 4, 5.6 are in the initial position,
The first Hall element sensor group 20 and the second Hall element sensor group 21 output the same code as the initial pressure signal in FIG. '10' is memorized. Next, when the medium width of B4 horizontal is set, 'o' is stored in the C storage circuit 24.
oo” is set.Furthermore, the first
The latch circuit 26 has 'oioo'", the second latch circuit 2
"01°" is output to 7. Then, the output "'010"
The comparison circuit 28 compares the output ``0''' and the output ``0001'' of the A storage circuit 22, and sets the output of 〉 to the F/F 31. Furthermore, the output ゛°01''
10'' is compared in the comparator circuit 29 and the output is F/F 3
Set to 2. When the motor start signal is input, the gate circuit 34 opens and among the drivers 35 to 38, motor A (CwON) driver 36 and motor B (CCwON) driver 37 operate, and motor A1
6 moves clockwise, and motor B17 moves counterclockwise. As a result, the pressure position position signal changes, and this pressure position position signal and the 6-bit conversion code (A + B-
The motor stops when Os + 04 + C-F = 03 to Oo) match each other. Printing is then started, and the B4 horizontal size support medium is printed through the steps of development, transfer, and fixing. If the media width changes to A4 vertical on the way, the conversion diagram in Figure 6 is compared with the current pressure position signal and the driver motor A is compared.
(CCWON) (7) Driver 35 motor B (
CwON) is output to the driver 38 for operation. Incidentally, the motor star <= symbol and printing operation are performed according to the time chart shown in FIG.
上記実施例では荷重手段の位置センサーにホール素子を
使用したが、駆動ベルトにスリ、2ト円板を連結させて
回転により発生するパルス数を加算して所定の位置に荷
重手段を移動することも可能である。In the above embodiment, a Hall element was used as a position sensor for the load means, but it is also possible to connect a slotted, two-tooth disc to the drive belt and add the number of pulses generated by rotation to move the load means to a predetermined position. is also possible.
以上詳細に説明したように本発明によれば、トナー像支
持媒体の幅を指定するだけで、荷重手段を最適加圧位置
へ移動し、停止させることができるという効果がある。As described above in detail, according to the present invention, the loading means can be moved to the optimum pressing position and stopped by simply specifying the width of the toner image supporting medium.
第1図は本発明圧力定着装置の加圧制御方式の一実施例
を示す圧力定着装置の軸方向断面図、第2同情第1図の
A−A’断面図、第3図は同じく荷重手段を駆動する回
路のブロック図、第4図はホール素子センサの配列を示
す図、第5図は媒体幅と圧定ポジション位置との関係を
コード化して示す図、第6図は媒体幅を示すコードと変
換データを示す図、第7図は印字動作のタイムチャート
を示す図である。
1・・・定着ローラ、2・・・対向ローラ、3・・・フ
レーム、4,5.6・・・荷重手段、7・・・マグネッ
ト、8゜9、.10,11.12・・・ホール素子セン
サ、13・・・基板、14.L5・・・駆動ベルト、1
6・・・モータA117・・・モータB118・・・加
圧バー、20・・・第1ホール素子センサ群、21・・
・第2ホール素子センサ群、22・・・A記憶回路、2
3・・・B記憶回路、24・・・C記憶回路、25・・
・変換回路、26・・・第1う、チ回路、27・・・第
2ラッチ回路、28.29・・比較回路、30〜33・
・・フリップフロップ(F/F )、34・・・ケゞ−
ト回路、35〜38・・・ドライバ。
特許出願人 沖電気工業株式会社
第2図
ノぐ
第7図FIG. 1 is an axial sectional view of the pressure fixing device showing one embodiment of the pressure control method of the pressure fixing device of the present invention, a second cross-sectional view is taken along the line AA' in FIG. 1, and FIG. 3 is the same loading means. Figure 4 is a diagram showing the arrangement of the Hall element sensor, Figure 5 is a diagram showing the coded relationship between the media width and the pressure position position, and Figure 6 is the diagram showing the media width. A diagram showing codes and conversion data, and FIG. 7 is a diagram showing a time chart of printing operation. DESCRIPTION OF SYMBOLS 1... Fixing roller, 2... Opposing roller, 3... Frame, 4,5.6... Loading means, 7... Magnet, 8°9, . 10, 11.12... Hall element sensor, 13... Substrate, 14. L5... Drive belt, 1
6... Motor A117... Motor B118... Pressure bar, 20... First Hall element sensor group, 21...
・Second Hall element sensor group, 22...A memory circuit, 2
3...B memory circuit, 24...C memory circuit, 25...
・Conversion circuit, 26...1st circuit, 27...2nd latch circuit, 28.29...comparison circuit, 30-33.
・Flip-flop (F/F), 34...key-
circuit, 35-38...driver. Patent applicant Oki Electric Industry Co., Ltd. Figure 2 Nog Figure 7
Claims (1)
媒体を加圧することによりトナー像を定着する圧力定着
装置の加圧制御方式において、ローラの軸方向に移動可
能であってローラに荷重を加える複数の荷重手段と、こ
の荷重手段の現在位置を検知する複数のセンサと、トナ
ー像支持媒体の幅に応じて前記複数の荷重手段が所定の
センサに検知されるよう荷重手段を移動し停止する制御
回路とを備え、トナー像支持媒体の幅を指定することに
より荷重手段を最適荷重位置へ位置づけることを特徴と
する圧力定着装置の加圧制御方式。In the pressure control method of a pressure fixing device that fixes a toner image by applying pressure to the toner image support medium between a pair of parallel rollers that are in pressure contact with each other, a pressure fixing device that is movable in the axial direction of the rollers and that applies a load to the rollers is used. a plurality of loading means to be applied, a plurality of sensors for detecting the current position of the loading means, and moving and stopping the loading means so that the plurality of loading means are detected by a predetermined sensor according to the width of the toner image supporting medium. A pressure control system for a pressure fixing device, comprising a control circuit for positioning a loading means at an optimum loading position by specifying the width of a toner image supporting medium.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21785482A JPS59109079A (en) | 1982-12-14 | 1982-12-14 | Pressure controlling system of pressure fixing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21785482A JPS59109079A (en) | 1982-12-14 | 1982-12-14 | Pressure controlling system of pressure fixing device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS59109079A true JPS59109079A (en) | 1984-06-23 |
Family
ID=16710804
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP21785482A Pending JPS59109079A (en) | 1982-12-14 | 1982-12-14 | Pressure controlling system of pressure fixing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS59109079A (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5374026A (en) * | 1977-11-05 | 1978-07-01 | Minolta Camera Co Ltd | Variable magnification lens device |
JPS55151633A (en) * | 1979-05-15 | 1980-11-26 | Ricoh Co Ltd | Lens position control method |
JPS5745577A (en) * | 1980-09-01 | 1982-03-15 | Oki Electric Ind Co Ltd | Pressure fixing device |
JPS57200073A (en) * | 1981-06-03 | 1982-12-08 | Oki Electric Ind Co Ltd | Pressure fixing device |
-
1982
- 1982-12-14 JP JP21785482A patent/JPS59109079A/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5374026A (en) * | 1977-11-05 | 1978-07-01 | Minolta Camera Co Ltd | Variable magnification lens device |
JPS55151633A (en) * | 1979-05-15 | 1980-11-26 | Ricoh Co Ltd | Lens position control method |
JPS5745577A (en) * | 1980-09-01 | 1982-03-15 | Oki Electric Ind Co Ltd | Pressure fixing device |
JPS57200073A (en) * | 1981-06-03 | 1982-12-08 | Oki Electric Ind Co Ltd | Pressure fixing device |
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