JPS60102675A - Flash fixing device - Google Patents
Flash fixing deviceInfo
- Publication number
- JPS60102675A JPS60102675A JP21047083A JP21047083A JPS60102675A JP S60102675 A JPS60102675 A JP S60102675A JP 21047083 A JP21047083 A JP 21047083A JP 21047083 A JP21047083 A JP 21047083A JP S60102675 A JPS60102675 A JP S60102675A
- Authority
- JP
- Japan
- Prior art keywords
- recording paper
- flash
- reflection factor
- signal
- motor
- 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
- 238000001514 detection method Methods 0.000 claims description 5
- 230000001678 irradiating effect Effects 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
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
- G03G15/2003—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat
- G03G15/2007—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat using radiant heat, e.g. infrared lamps, microwave heaters
- G03G15/201—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat using radiant heat, e.g. infrared lamps, microwave heaters of high intensity and short duration, i.e. flash fusing
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fixing For Electrophotography (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は複写機等におけるフラッシュ定着装置に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a flash fixing device in a copying machine or the like.
（従来の技術）
従来の複写機等におけるフラッシュ定着装置はフラッシ
ュランプの外周に配置するり７レクターの幅が最初から
定められていて、その幅はりフレフタ−自体を交換しな
い限り変更できないように構成されていた。そのために
前記フラッシュランプをフラッジ−させて記録紙上に転
写された未定着のトナー像を定着するとき、フラッシュ
光量が一定の場合には定着しようとする範囲の単位面積
当たりの照射光量が一定となって記録紙の反射率や当該
記録紙上に転写した画像密度等により定着の度合が左右
されてしまう性質があり、たとえば前記記録紙自体が反
射率の高いものの場合は定着過多となる一方、反射率の
低いものの場合には定着不良を発生させてしまうといっ
た欠点があった。(Prior Art) The flash fixing device in conventional copying machines and the like is arranged around the outer periphery of the flash lamp, and the width of the reflector is determined from the beginning, and the width cannot be changed unless the frefter itself is replaced. It had been. Therefore, when the flash lamp is flooded to fix the unfixed toner image transferred onto the recording paper, if the amount of flash light is constant, the amount of light irradiated per unit area of the area to be fixed will be constant. The degree of fixing is influenced by the reflectance of the recording paper and the density of the image transferred onto the recording paper. For example, if the recording paper itself has a high reflectance, overfixing will occur, while the reflectance However, in the case of a film having a low viscosity, it has the disadvantage of causing poor fixing.
（発明の目的）
本発明は上記従来のフラッシュ定着装置の欠点を除去す
るためになされたものであって、記録紙の反射率や画像
密度に応じて最適な単位当たりフラッシュ照射光量を与
えることを可能としたフラッシュ定着装置を提供するこ
とを目的としたものである。(Object of the Invention) The present invention has been made in order to eliminate the drawbacks of the conventional flash fixing device described above, and aims to provide an optimal amount of flash irradiation light per unit according to the reflectance of recording paper and image density. The object of the present invention is to provide a flash fixing device that can be used.
（発明の構成）
そのために本発明は前記リフレクタ−を天井部とサイド
部とに分離した形状に設け、天井部は前記フラッシュラ
ンプの上方に固定状に取付けると共に１サイド部はフラ
ッシュランプに対し横方向に移動可能にしてランプ下の
開口部を広狭変化可能にし、このリフレクタ−のサイド
部や移動は、装置自体に設けた記録紙の反射率及び画像
密度を検出する装置の一方又は双方の検出信号に基づき
駆動源を作動させて行なわれるようにしたものである。(Structure of the Invention) For this purpose, the present invention provides the reflector in a shape that is separated into a ceiling part and a side part, the ceiling part is fixedly attached above the flash lamp, and one side part is attached horizontally to the flash lamp. The side part of this reflector and its movement are controlled by one or both of the devices installed in the device itself that detect the reflectance of the recording paper and the image density. This is done by activating the drive source based on the signal.
（実 施 例）
以下本発明を図面に示す実施例に基づいて詳細に説明す
る。(Embodiments) The present invention will be described in detail below based on embodiments shown in the drawings.
図は本発明のフラッシュ定着装置の一実施例を示す概略
構成図である。The figure is a schematic configuration diagram showing an embodiment of the flash fixing device of the present invention.
フレーム１の適所に軸受２．２′を吊架し、該軸受２．
２′にはリードスクリュー３を取付ける。該リードスク
リー−３は図中中央部から両端部にかけて夫々相対的に
ネジ山３ａ、３ｂが切ってあり、その一端にはギヤ４を
取付け、該ギヤ４はフレームＩＫ設置ｔたパルスモータ
−５のシャフト６に取付けたギヤ７に噛合わせておく。A bearing 2.2' is suspended at a suitable position on the frame 1.
Attach lead screw 3 to 2'. The lead screen 3 has screw threads 3a and 3b relatively cut from the center to both ends in the figure, and a gear 4 is attached to one end of the lead screen, and the gear 4 is connected to a pulse motor 5 installed in a frame IK. mesh with the gear 7 attached to the shaft 6.
一方前記リードスクリュー３のネジ山３ａ、３ｂにはネ
ジブロック８．８′を夫々相対的に取付け、該ネジブロ
ック８．８′にはへの字形状に設けたサイドリフレクタ
−９，９′を夫々相対的に取付け、該サイドリフレクタ
−９，９′の上方中央部の下面には固定リフレクタ−１
Ｏを配置し、該リフレクタ−１０の下方の適所にはフラ
ッシュランプ１１を配置する。又前記パルスモータ−５
は、これをモーター駆動回路１２に接続し、該モーター
駆動回路１３は演算回路１３に接続すると共に、該演算
回路１２は図示を省略した記録紙反射率検出装置及び画
像密度検出装置に接続しておいて、これらの装置が検出
する記録紙反射率信号Ａ又は画像密度信号Ｂ或はこれの
双方の信号Ａ、Ｂに基づい【演算回路１３を作動させ、
モーター駆動回路１２を介して前記パルスモータ−５を
必要回数の正回転又は逆回転させるようにする。On the other hand, screw blocks 8.8' are relatively attached to the screw threads 3a and 3b of the lead screw 3, respectively, and side reflectors 9 and 9' provided in a V-shape are attached to the screw blocks 8.8'. A fixed reflector 1 is attached to the lower surface of the upper central part of the side reflectors 9 and 9'.
A flash lamp 11 is placed at a suitable position below the reflector 10. Also, the pulse motor 5
This is connected to a motor drive circuit 12, and the motor drive circuit 13 is connected to an arithmetic circuit 13, and the arithmetic circuit 12 is connected to a recording paper reflectance detection device and an image density detection device (not shown). Then, based on the recording paper reflectance signal A, the image density signal B, or both signals A and B detected by these devices, [operating the arithmetic circuit 13]
The pulse motor 5 is rotated forward or backward a required number of times via the motor drive circuit 12.
本発明は以上のように構成したものである。次にその動
作について説明する。The present invention is constructed as described above. Next, its operation will be explained.
いま図示を省略した記録紙に対し、反射率検出装置と、
当該記録紙上に転写された画像の密度検出装置によって
反射率と画像密度とが検出され、その信号Ａ、Ｂが演算
回路１３に入力されると、当該演算回路１３はこれに基
づきパルスモータ−５を正回転成は逆回転させるための
パルス信号をモーター駆動回路１２に出力する。この信
号に基づいてパルスモータ−５は正回転又は逆回転する
のであるが、当該モーター５が正回転すると、これに伴
ないリードスクリュー３が回転し、該リードスクリュー
３のネジ山３ａ、３ｂＫ取付げておいたネジブロック８
．８′が互いに中央部に相寄ると仮定して、その方向に
回転させるとサイドリフレクタ−９，９′は図中点線に
示す方向へと互いに駆動して下部の開口部の幅がせばま
り、パルスモータ−５に対するパルス信号がストフプし
たところで停止する。これに対し、前記状態からサイド
リフレクタ−９，９’による開口部の幅を広げたいとき
には前記パルスモータ−５を必要なだけ逆回転させれば
よく、このように記録紙の反射率と画像密度とに応じて
サイドリフレクタ−９，９′の幅を広狭変化させてフラ
ッシュランプＩＩＫよる単位面積当たりの照射光量を常
時最適に保つ。For the recording paper (not shown), a reflectance detection device and
When the reflectance and image density of the image transferred onto the recording paper are detected by the density detection device, and the signals A and B are inputted to the arithmetic circuit 13, the arithmetic circuit 13 controls the pulse motor 5 based on the signals A and B. For forward rotation, a pulse signal for reverse rotation is output to the motor drive circuit 12. Based on this signal, the pulse motor 5 rotates forward or backward. When the motor 5 rotates forward, the lead screw 3 rotates accordingly, and the screw threads 3a, 3bK of the lead screw 3 are attached. Removed screw block 8
．． Assuming that the side reflectors 8' are moved toward the center, and rotated in that direction, the side reflectors 9 and 9' will be driven toward each other in the direction shown by the dotted line in the figure, and the width of the lower opening will be narrowed. , the pulse motor 5 stops when the pulse signal to the pulse motor 5 stops. On the other hand, if you want to widen the width of the aperture formed by the side reflectors 9, 9' from the above state, you can simply rotate the pulse motor 5 in the opposite direction as necessary. The width of the side reflectors 9, 9' is varied accordingly to keep the amount of light irradiated per unit area by the flash lamp IIK optimal at all times.
（発明の効果）
本発明は以上のように構成し、且つ使用するものであり
、フラッシュランプの外周に配置するりフレフタ−を天
井部とサイド部とに分離し、天井部は固定状に設けるか
わりに両サイド部はこれを横方向に移動可能に設け、そ
の移動は記録紙の反射率及び画像密度に応じて行ない、
これによってフラッシュ照射面積を変化させ、単位面積
当たりの照射光量を常時最適なものとしたものであるか
ら、従来のフラッシュ定着装置のように定着過多や定着
不良はなくなり、その分装置自体の信頼性の向上に役立
つといった効果を有する。(Effects of the Invention) The present invention is constructed and used as described above, and is arranged on the outer periphery of a flash lamp, or the flaper is separated into a ceiling part and a side part, and the ceiling part is provided in a fixed manner. Instead, both side parts are provided so as to be movable in the lateral direction, and the movement is performed according to the reflectance and image density of the recording paper.
This changes the flash irradiation area and always optimizes the amount of light irradiated per unit area, so there is no over-fixing or poor fixing like with conventional flash fixing devices, and the reliability of the device itself is increased accordingly. It has the effect of helping to improve
尚、本発明は上記実施例に限定されなげればならない理
由はなく、たとえばサイドリフレクタ−９．９′を移動
させるだめの駆動源として用いるパルスモータ−５は、
これを直流モーターや交流可逆モーターによる位置決め
サーボ機構のものであっても良いし、又当該モーターか
らの動力の伝達手段として用いるリードスクリュー３は
、これを別のものにかえてもよいことは勿論のこと、前
記リードスクリュー３を回転させてサイドリフレクタ−
９，９′の移動を行なうためのパルスモータ−５の駆動
パルスはこれを記録紙の反射率信号Ａと画像密度信号Ｂ
とに応じて行なう他に、そのいずれか一方の信号によっ
て行なえるようにしてもよいことはいうまでもない。It should be noted that there is no reason why the present invention should be limited to the above-mentioned embodiments. For example, the pulse motor 5 used as a drive source for moving the side reflectors 9, 9' may be
It goes without saying that this may be a positioning servo mechanism using a DC motor or an AC reversible motor, and the lead screw 3 used as a means of transmitting power from the motor may be replaced with another one. By rotating the lead screw 3, the side reflector
The drive pulses of the pulse motor 5 for moving the recording paper 9 and 9' are transmitted by the recording paper reflectance signal A and the image density signal B.
It goes without saying that, in addition to being carried out depending on the signal, it may be possible to carry out the operation according to one of the signals.
図は本発明の７ラノシユ定着装置の一実施例を示す概略
ｈｔ成図である。
図中１・・・フレーム、２．２’・・・軸受、３・・・
リードスクリュー、３ａ、３ｂ・・・ネジ山、４・・・
ギヤ、５・パルスモータ−１６・・・シャフト、７・・
ギヤ、８．８′・・・ネジブロック、９．９′・・・サ
イドリフレクタ−１１０・・固定リフレクタ−１１１・
・・フラッシュランプ、１２・・・モーター駆動回路、
１３ ・演１回路、Ａ・・・記録紙反射率信号、Ｂ 記
録紙上の画像？「１度イ汀号。The figure is a schematic diagram showing an embodiment of the 7-line fixing device of the present invention. In the figure 1...Frame, 2.2'...Bearing, 3...
Lead screw, 3a, 3b...screw thread, 4...
Gear, 5・Pulse motor-16...Shaft, 7...
Gear, 8.8'...Screw block, 9.9'...Side reflector-110...Fixed reflector-111.
...Flash lamp, 12...Motor drive circuit,
13 - Performance 1 circuit, A... Recording paper reflectance signal, B Image on recording paper? ``Once upon a time.
Claims (1)
置の双方又はいずれか一方を具備した電子写真複写機等
のフラッシュ定着装置において、フラッシュランプの外
周に配置するりフレフタ−を天井部と両サイド部とに分
離し、そのうち両サイドリフレクタ−はこれを移動可能
に設けてフラッシュ照射面積を広狭変化させることを可
能とすると共に、前記両サイドリフレクタ−の移動は記
録紙の反射率及び画像密度の双方又はいずれか一方の検
出信号に基づいて行なうようにしたことを特徴とするフ
ラッシュ定着装置。In a flash fixing device such as an electrophotographic copying machine, which is equipped with a device for detecting the reflectance of recording paper and/or a device for detecting image density, the flash fixing device is installed around the outer periphery of the flash lamp, or the flaper is connected to the ceiling. The two side reflectors are movably provided to enable the flash irradiation area to be varied wide and narrow, and the movement of the two side reflectors changes the reflectance of the recording paper and the image. A flash fixing device characterized in that the fixing is performed based on a detection signal of either or both of the densities.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21047083A JPS60102675A (en) | 1983-11-09 | 1983-11-09 | Flash fixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21047083A JPS60102675A (en) | 1983-11-09 | 1983-11-09 | Flash fixing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60102675A true JPS60102675A (en) | 1985-06-06 |
Family
ID=16589867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21047083A Pending JPS60102675A (en) | 1983-11-09 | 1983-11-09 | Flash fixing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60102675A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7783241B2 (en) * | 2007-06-11 | 2010-08-24 | Fuji Xerox Co., Ltd. | Reflection member for a fixing unit of an, image forming apparatus and a fixing method using the reflection member |
-
1983
- 1983-11-09 JP JP21047083A patent/JPS60102675A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7783241B2 (en) * | 2007-06-11 | 2010-08-24 | Fuji Xerox Co., Ltd. | Reflection member for a fixing unit of an, image forming apparatus and a fixing method using the reflection member |
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