JPH0321913B2 - - Google Patents
Info
- Publication number
- JPH0321913B2 JPH0321913B2 JP56153192A JP15319281A JPH0321913B2 JP H0321913 B2 JPH0321913 B2 JP H0321913B2 JP 56153192 A JP56153192 A JP 56153192A JP 15319281 A JP15319281 A JP 15319281A JP H0321913 B2 JPH0321913 B2 JP H0321913B2
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- fixing
- roller
- fixing roller
- copying
- 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.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 claims description 5
- 230000007423 decrease Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000009434 installation Methods 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
- G03G15/2014—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat using contact heat
- G03G15/2039—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat using contact heat with means for controlling the fixing temperature
Description
【発明の詳細な説明】
本発明は、複写制御方法、特に、転写材の連続
定着に伴つて定着ローラの表面温度を定着可能な
範囲で漸次低下させるようにした複写制御方法に
係り、定着ローラと加圧ローラの温度を検出し、
これらの温度から定着ローラの定着可能下限温度
を決定し、該定着可能下限温度まで複写可能と
し、もつて、ダウンタイムに到るまでのコピー処
理枚数をできるだけ多くできるようにしたもので
ある。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a copy control method, and more particularly, to a copy control method in which the surface temperature of a fixing roller is gradually lowered within a fixable range as a transfer material is continuously fixed. and the temperature of the pressure roller,
The lower limit fixing temperature of the fixing roller is determined from these temperatures, copying is possible up to the lower limit fixing temperature, and the number of copies to be processed can be increased as much as possible before downtime occurs.
第１図は、転写材に静電的に付着させたトナー
を加熱定着させる定着装置の要部構成図で、図
中、１はヒータ、２は該ヒータ１を内装した定着
（熱）ローラ、３は加圧ローラ、４は転写材で、
周知のように、加圧ローラ３によつて転写材４を
定着ローラ２に圧着させ、該定着ローラ２によつ
て転写材４の表面のトナーを融着させ、複写像を
転写材４へ定着させるようにしている。しかし、
上述のごとき定着装置において、複写速度を上げ
ようとすると、複写速度に比例して転写材により
奪われる熱量が増大し、定着温度が低下する。第
２図は、その場合の定着ローラの温度特性を表わ
したもので図中、曲線Ａは定着ローラの温度特
性、期間T0は待機期間で、図示のように時間t0に
おいてコピーを開始すると、定着ローラの温度は
コピー枚数に従つて低下し、下限温度以下に低下
すると定着できなくなる。これを防止するために
は、ヒータに加える電力を増大させればよいが、
そうすれば、複写機全体の消費電力も増大して一
般家庭用電源が使用できなくなり、複写機の設置
場所に制限を受ける等の不具合が生じる。そこ
で、従来は、定着ローラに温度検出器を設け、定
着ローラの温度が規定値より低下した場合に、複
写を一時停止して定着ローラの温度が所定温度に
回復するまで待機する等しているが、この待機期
間（ダウンタイム）中はコピーをとることができ
ず、これが複写機の性能を損ねる要因の１つにな
つていた。 FIG. 1 is a configuration diagram of the main parts of a fixing device that heats and fixes toner electrostatically adhered to a transfer material. In the figure, 1 is a heater, 2 is a fixing (thermal) roller incorporating the heater 1, 3 is a pressure roller, 4 is a transfer material,
As is well known, the transfer material 4 is pressed against the fixing roller 2 by the pressure roller 3, the toner on the surface of the transfer material 4 is fused by the fixing roller 2, and the copied image is fixed onto the transfer material 4. I try to let them do it. but,
In the fixing device as described above, when an attempt is made to increase the copying speed, the amount of heat absorbed by the transfer material increases in proportion to the copying speed, and the fixing temperature decreases. Figure 2 shows the temperature characteristics of the fixing roller in that case. In the figure, curve A is the temperature characteristic of the fixing roller, period T 0 is the standby period, and as shown in the figure, when copying starts at time t 0 , The temperature of the fixing roller decreases according to the number of copies, and when the temperature drops below the lower limit temperature, fixing becomes impossible. To prevent this, you can increase the power applied to the heater, but
If this happens, the power consumption of the entire copying machine increases, making it impossible to use a general household power source, and causing problems such as restrictions on the installation location of the copying machine. Therefore, in the past, a temperature detector was installed on the fixing roller, and when the temperature of the fixing roller fell below a specified value, copying was temporarily stopped and the system waited until the temperature of the fixing roller recovered to a predetermined temperature. However, during this waiting period (downtime), copies cannot be made, which is one of the factors that impairs the performance of the copying machine.
上述のように、従来は、定着ローラの温度を検
出して定着の可否を決定していたが、実際には、
加圧ローラの温度の影響もあり、定着ローラの温
度が同一であつても、加圧ローラの温度の高低で
定着性が良くなつたり、悪くなつたりする。 As mentioned above, conventionally, the temperature of the fixing roller was detected to determine whether or not fixing could be performed, but in reality,
The temperature of the pressure roller is also affected, and even if the temperature of the fixing roller is the same, the fixing performance will be better or worse depending on the temperature of the pressure roller.
本発明は転写材の連続定着に伴つて定着ローラ
の表面温度が定着可能な範囲で漸次低下する複写
制御方法において、定着ローラと加圧ローラの温
度を検出し、これらの温度から定着ローラの定着
可能下限温度を決定し、該定着可能下限温度まで
複写可能としたことを特徴としたものである。 The present invention uses a copy control method in which the surface temperature of the fixing roller gradually decreases within a fixable range as the transfer material is continuously fixed. The present invention is characterized in that a minimum possible temperature is determined, and copying is possible up to the minimum possible fixing temperature.
第３図は、定着性をパラメータとした場合の定
着ローラ温度と加圧ローラ温度の関係を示す図
で、定着性は曲線Ｂにて示すように略直線で近似
され、その傾きはおよそ0.1〜0.5の間にあり、そ
の値は、転写紙の種類等によつて異なる。第３図
において、傾きが0.1のとき、定着ローラの温度
がT1、加圧ローラの温度がT3、定着性α＜βと
すれば、得られる定着性にはまだ余裕があり、定
着ローラの温度がT2になるまでコピーできるこ
とが判る。このように、定着性をパラメータとし
た時の定着ローラの温度と加圧ローラの温度との
関係を前もつて把握しておけば、定着ローラと加
圧ローラの温度を検知することにより、より多く
のコピー枚数をダウンタイム前に処理することが
できる。 FIG. 3 is a diagram showing the relationship between fixing roller temperature and pressure roller temperature when fixing property is taken as a parameter. Fixing property is approximately approximated by a straight line as shown by curve B, and its slope is approximately 0.1 to It is between 0.5 and its value varies depending on the type of transfer paper. In Fig. 3, when the slope is 0.1, the temperature of the fixing roller is T 1 , the temperature of the pressure roller is T 3 , and the fixing property α<β, there is still some margin in the fixing property that can be obtained, and the fixing roller It can be seen that it can be copied until the temperature of becomes T 2 . In this way, if you understand in advance the relationship between the temperature of the fixing roller and the temperature of the pressure roller when fixing performance is taken as a parameter, you can improve the A large number of copies can be processed before downtime.
第４図は、上述のごとき本発明の実施に使用し
て好適な電気回路の一例を示す図で、図中、１０
は定着ローラ温度検出器、１１は加圧ローラ温度
検出器、１２はアナログデジタル変換回路、１３
はマイクロコンピユータ、１４は機械制御回路
で、マイクロコンピユータ１３に定着ローラの温
度信号ａと加圧ローラの温度信号ｂを入力し、こ
れらを該マイクロコンピユータ１３に前もつて格
納されている定着性パラメータと比較し、前述の
ようにして、定着ヒータのコピー可能下限温度を
決定し、それに応じた機械制御を行うようにして
いる。 FIG. 4 is a diagram showing an example of an electric circuit suitable for use in carrying out the present invention as described above.
11 is a pressure roller temperature detector; 12 is an analog-to-digital conversion circuit; 13 is a fixing roller temperature detector;
is a microcomputer, and 14 is a mechanical control circuit, which inputs the temperature signal a of the fixing roller and the temperature signal b of the pressure roller to the microcomputer 13, and inputs these to the microcomputer 13 as fixing performance parameters stored in advance. In comparison, the lower limit temperature of the fixing heater that allows copying is determined as described above, and the machine is controlled accordingly.
以上の説明から明らかなように、本発明による
と、定着ローラの温度と加圧ローラの温度の両方
から定着可能下限温度を決定し、該定着可能下限
温度まで複写可能としたので、ダウンタイムに到
るまでのコピー処理枚数を多くすることができ、
従つて、複写機の性能を向上させることができ
る。 As is clear from the above description, according to the present invention, the lower limit temperature that can be fixed is determined from both the temperature of the fixing roller and the temperature of the pressure roller, and copying is possible up to the lower limit temperature that can be fixed, thereby reducing downtime. The number of copies processed can be increased,
Therefore, the performance of the copying machine can be improved.
第１図は、定着装置の要部慨略構成図、第２図
は、定着ローラの温度特性図、第３図は、定着性
をパラメータとした時の定着ローラの温度と加圧
ローラの温度の関係を示す図、第４図は、本発明
の実施に使用して好適な電気回路の一例を示す図
である。
１……定着ヒータ、２……定着ローラ、３……
加圧ローラ、４……転写材、１０……定着ローラ
温度検出器、１１……加圧ローラ温度検出器、１
２……Ａ／Ｄ、１３……CPU、１４……機械制
御回路。
Figure 1 is a schematic configuration diagram of the main parts of the fixing device, Figure 2 is a temperature characteristic diagram of the fixing roller, and Figure 3 is the temperature of the fixing roller and the temperature of the pressure roller when fixing performance is taken as a parameter. FIG. 4 is a diagram showing an example of an electric circuit suitable for use in implementing the present invention. 1... Fixing heater, 2... Fixing roller, 3...
Pressure roller, 4... Transfer material, 10... Fixing roller temperature detector, 11... Pressure roller temperature detector, 1
2...A/D, 13...CPU, 14...mechanical control circuit.
Claims (1)
温度が定着可能な範囲で漸次低下する複写制御方
法において、定着ローラと加圧ローラの温度を検
出し、これらの温度から定着ローラの定着可能下
限温度を決定し、該定着可能下限温度まで複写可
能としたことを特徴とする複写制御方法。1. In a copying control method in which the surface temperature of the fixing roller gradually decreases within the fixable range as the transfer material is continuously fixed, the temperatures of the fixing roller and pressure roller are detected, and from these temperatures the lower limit of fixing possible of the fixing roller is determined. 1. A copying control method, characterized in that a temperature is determined and copying is possible up to the lower limit temperature at which fixing is possible.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56153192A JPS5854366A (en) | 1981-09-28 | 1981-09-28 | Method of controlling for copying |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56153192A JPS5854366A (en) | 1981-09-28 | 1981-09-28 | Method of controlling for copying |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5854366A JPS5854366A (en) | 1983-03-31 |
| JPH0321913B2 true JPH0321913B2 (en) | 1991-03-25 |
Family
ID=15557053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56153192A Granted JPS5854366A (en) | 1981-09-28 | 1981-09-28 | Method of controlling for copying |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5854366A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0727476Y2 (en) * | 1987-05-29 | 1995-06-21 | 株式会社リコー | Copying device |
| JPH02110588A (en) * | 1988-10-20 | 1990-04-23 | Fuji Xerox Co Ltd | Temperature controller for fixing device |
-
1981
- 1981-09-28 JP JP56153192A patent/JPS5854366A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5854366A (en) | 1983-03-31 |
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