JP3515850B2 - Gloss selectable fixing device - Google Patents
Gloss selectable fixing deviceInfo
- Publication number
- JP3515850B2 JP3515850B2 JP07367196A JP7367196A JP3515850B2 JP 3515850 B2 JP3515850 B2 JP 3515850B2 JP 07367196 A JP07367196 A JP 07367196A JP 7367196 A JP7367196 A JP 7367196A JP 3515850 B2 JP3515850 B2 JP 3515850B2
- Authority
- JP
- Japan
- Prior art keywords
- heating
- fixing device
- glossiness
- heat
- heating element
- 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 - Fee Related
Links
Landscapes
- Fixing For Electrophotography (AREA)
- Paper Feeding For Electrophotography (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、画像形成装置の
光沢度選択式定着装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a glossiness selective fixing device for an image forming apparatus.
【０００２】[0002]
【従来の技術】従来の光沢度選択式定着装置には、(1）
特開平1-296281号公報に開示されて公知となっているも
のがあり、それは図７に示すようであって、定着装置
が、非光沢表面を形成させるフッ素樹脂などを表面に有
する第１定着ローラ11と加圧ローラ12とからなる第１定
着ローラ対13と、これと同様のサイズを有する光沢表面
を形成させるシリコンゴムなどを表面に有する第２定着
ローラ14と加圧ローラ12とからなる第２定着ローラ対15
との２組の定着ローラ対と、通紙方向を切換える切換機
構部17とを具え、定着画像の光沢有無に対応して切換機
構部17によって第１定着ローラ対13、または第２定着ロ
ーラ対15のいずれかを選択して通紙し、光沢画像、また
は非光沢画像をえるものである。なお、４はトナー、10
は転写紙、16はヒータをそれぞれ示す。2. Description of the Related Art The conventional glossiness selection type fixing device has (1)
There is a known one disclosed in Japanese Patent Application Laid-Open No. 1-296281, which is as shown in FIG. 7, in which the fixing device has a fluorine resin or the like for forming a non-glossy surface on the surface thereof. It is composed of a first fixing roller pair 13 composed of a roller 11 and a pressure roller 12, a second fixing roller 14 having a surface similar to that of silicone rubber for forming a glossy surface, and a pressure roller 12. Second fixing roller pair 15
2 pairs of fixing rollers and a switching mechanism section 17 for switching the sheet passing direction, and the switching mechanism section 17 uses the first fixing roller pair 13 or the second fixing roller pair in accordance with the presence or absence of gloss of the fixed image. Select any one of 15 and pass it through to obtain a glossy image or a non-glossy image. 4 is toner, 10
Is a transfer paper, and 16 is a heater.
【０００３】このようなものにあっては、コピー枚数の
多い白黒画像については第１定着ローラ対13で設定温度
に早く立ち上がらせ待ち時間を少なくし、またカラーコ
ピーが指定されたときは、第２定着ローラ対15の第２定
着ローラ14がウオームアップをした後、通紙して非光沢
表面画像に定着し、光沢を有する第１定着ローラ11によ
って生じる表面模様が発生しないようにしている。In such a case, for a black-and-white image with a large number of copies, the first fixing roller pair 13 quickly rises to a set temperature to reduce the waiting time, and when a color copy is designated, After the second fixing roller 14 of the pair of two fixing rollers 15 warms up, the paper is passed and fixed on the non-glossy surface image so that the surface pattern generated by the first fixing roller 11 having gloss is not generated.
【０００４】また、（2）特開平1-265283号公報に開示
されて公知となっているものがあり、それは図８に示す
ようであって、１本の加圧ローラ12とこれに圧接する第
１、第２の２本の定着ローラ11，14と、搬入された転写
紙を加圧ローラ12と第１定着ローラ11とにより形成され
る第１ニップ部11′を経由して排出する経路と、第１ニ
ップ部11′を通過した後、加圧ローラ12と第２定着ロー
ラ14とにより形成される第２ニップ部14′を経て排出す
る経路とを選択的に切換える手段18とを有し、第１定着
ローラ11の表面は非光沢面をなし、第２定着ローラ14の
表面は光沢面をなすものである。Further, (2) there is a known one disclosed in Japanese Patent Laid-Open Publication No. 1-265283, which is shown in FIG. 8, and is in contact with one pressure roller 12 and this. A path for discharging the first and second fixing rollers 11 and 14 and the transferred transfer paper via a first nip portion 11 ′ formed by the pressure roller 12 and the first fixing roller 11. And means 18 for selectively switching the path for discharging after passing through the first nip portion 11 'and passing through the second nip portion 14' formed by the pressure roller 12 and the second fixing roller 14. However, the surface of the first fixing roller 11 is a non-glossy surface, and the surface of the second fixing roller 14 is a glossy surface.
【０００５】このようなものにあっては、白黒コピーを
指定したときは、転写紙は第１ニップ部11′を経由して
光沢のない画像が形成されて機外に排出され、カラーコ
ピーを指定すると、第２ニップ部14′を経て、カラーコ
ピーに適する光沢表面が形成されて機外に排出されるよ
うになっている。In such a case, when a black-and-white copy is designated, the transfer paper forms a non-glossy image through the first nip portion 11 'and is discharged to the outside of the machine to make a color copy. If specified, a glossy surface suitable for color copying is formed through the second nip portion 14 'and is discharged to the outside of the machine.
【０００６】[0006]
【発明が解決しようとする課題】前記(1），(2）のよう
な従来の光沢度選択式定着装置は、高光沢度専用定着装
置と低光沢度専用定着装置の両方が同一記録装置内に設
けられていて、定着装置のスペースが通常のものの２倍
程度の大型にならざるをえず、定着装置のコストの大巾
な上昇をきたし、両方の定着ローラを同時にウォームア
ップさせておくと、消費電力の大巾な上昇をきたし、消
費電力を節減するために一方の定着ローラのみを加熱し
ておくと、他方の定着ローラを使用したい場合、ウォー
ムアップに時間がかかり、作業性が悪いという問題があ
る。In the conventional glossiness selective type fixing device as described in the above (1) and (2), both the high glossiness exclusive fixing device and the low glossiness exclusive fixing device are provided in the same recording device. In addition, the space of the fixing device must be twice as large as that of a normal fixing device, and the cost of the fixing device is greatly increased, and if both fixing rollers are warmed up at the same time. If you want to use the other fixing roller, it takes a long time to warm up and the workability is poor, because the power consumption is greatly increased and only one fixing roller is heated to save the power consumption. There is a problem.
【０００７】そこで発明の目的は、前記のような従来の
光沢度選択式定着装置のもつ問題を解消し、定着装置が
小型にできて省スペースであり、コストと、消費電力と
を低減することができて、コピーの作業性が良好な光沢
度選択式定着装置を提供するにある。Therefore, an object of the present invention is to solve the problems of the conventional glossiness selective type fixing device as described above, to make the fixing device compact and to save space, and to reduce the cost and power consumption. The present invention provides a glossiness-selective fixing device that is capable of achieving good copy workability.
【０００８】[0008]
【課題を解決するための手段】この発明は、前記のよう
な目的を達成するために、請求項１に記載の発明は、光
沢度選択式定着装置であって、通電により発熱する発熱
体を有した第１加熱部材と、この第１加熱部材に圧接す
る第１加圧部材とを有する加熱定着装置の定着の後工程
部に作動の選択を自在にして光沢度低減手段を設け、こ
の光沢度低減手段は、通電により発熱する発熱体を有し
た第２加熱部材と、この第２加熱部材に圧接する第２加
圧部材とを有し、前記加熱定着装置の定着の工程部と前
記光沢度低減手段との中間に、搬送方向を切換えて、前
記光沢度低減手段を通過させて非光沢のものとし、また
は光沢度低減手段を通過させずに直接排出する動作の選
択を自在にする切換部材を設け、前記光沢度低減手段の
第２加熱部材は、その表面粗さを前記加熱定着装置の第
１加熱部材の表面粗さより大きくした非光沢表面を有す
るとともに、この第１加熱部材の発熱体への電流がピー
クとなるタイミングと前記第２加熱部材の発熱体への電
流がピークとなるタイミングとが互いに異なり重ならな
いようにしたことを特徴とするものである。請求項２に
記載の発明は、請求項１に記載の発明において、前記第
２加熱部材の非光沢表面は、その表面をドット状、綾目
状、十文字状、または、ストライプ状のいずれかの模様
を選択して形成した凸部分と凹部分とからなる非光沢表
面であることを特徴とするものである。請求項３に記載
の発明は、請求項２に記載の発明において、第１加圧部
材が第２加圧部材を兼ねることを特徴とするものであ
る。請求項４に記載の発明は、請求項１に記載の発明に
おいて、加熱定着装置の発熱体の最大発熱量より光沢度
低減手段の発熱体の最大発熱量を小さくしたことを特徴
とするものである。請求項５に記載の発明は、請求項１
に記載の発明において、前記両方の発熱体に同時に通電
する場合には、該両方の発熱体のピーク電流とオフ時と
の中間の電流が通電されるようにして同時に通電してい
ることを特徴とするものである。請求項６に記載の発明
は、請求項１に記載の発明において、加熱定着装置の加
圧力より、光沢度低減手段の加圧力を小さくしたことを
特徴とするものである。請求項７に記載の発明は、請求
項１に記載の発明において、加熱定着装置の発熱体の発
熱により昇温する部材の熱容量より光沢度低減手段の発
熱により昇温する部材の熱容量を小さくしたことを特徴
とするものである。請求項８に記載の発明は、請求項１
に記載の発明において、加熱定着装置の第１加熱部材
と、光沢度低減手段の第２加熱部材との表面に圧接部材
を設けるとともに、前記第２加熱部材の圧接部材の表面
粗さが第１加熱部材の圧接部材の表面粗さより大である
ことを特徴とするものである。In order to achieve the above-mentioned object, the present invention provides a glossiness selective type fixing device, wherein heat generation is caused by energization.
A first heating member having a body and a first pressure member that is in pressure contact with the first heating member; This
The gloss reduction means has a heating element that generates heat when energized.
A second heating member and a second heating member that is in pressure contact with the second heating member.
A pressure member , the conveyance direction is switched between the fixing process section of the heat fixing device and the gloss reduction means, and the gloss reduction means is passed through to make it non-glossy; or Of the glossiness reducing means is provided with a switching member for freely selecting the discharge operation without passing through the glossiness reducing means.
The second heating member has a surface roughness that is the same as that of the heat fixing device.
1 Has a non-glossy surface that is larger than the surface roughness of the heating member
And the current to the heating element of this first heating member is peaked.
And the electric power to the heating element of the second heating member.
The timing when the flow peaks is different from each other
It is characterized by doing so . Invention according to claim 2, in the invention described in claim 1, wherein said
2 The non-glossy surface of the heating member has a dot shape and a twilled surface.
-Shaped, cross-shaped, or striped pattern
A non-glossy table consisting of convex parts and concave parts formed by selecting
It is characterized by being a surface. A third aspect of the invention is characterized in that, in the second aspect of the invention, the first pressure member also serves as the second pressure member. The invention according to claim 4 is characterized in that, in the invention according to claim 1, the maximum heat generation amount of the heating element of the gloss reduction means is made smaller than the maximum heat generation amount of the heating element of the heat fixing device. is there. The invention described in claim 5 is claim 1
In the invention described in the paragraph 1, the both heating elements are energized at the same time.
In case of, the peak current of both heating elements and
So that the current in the middle of
It is characterized in that that. The invention described in claim 6 is characterized in that, in the invention described in claim 1, the pressing force of the glossiness reducing unit is smaller than the pressing force of the heat fixing device. According to a seventh aspect of the present invention, in the first aspect of the invention, the heat capacity of the member heated by the heat of the gloss reduction means is made smaller than the heat capacity of the member heated by the heat of the heating element of the heat fixing device. It is characterized by that. The invention described in claim 8 is claim 1
In the invention described in (1), a pressure contact member is provided on the surfaces of the first heating member of the heat fixing device and the second heating member of the gloss reduction means, and the surface roughness of the pressure contact member of the second heating member is the first. It is characterized in that it is larger than the surface roughness of the pressure contact member of the heating member.
【０００９】[0009]
【発明の実施の形態】図１，２に示すこの発明の実施形
態において、前記従来と同様の部分については同一の符
号を引用して説明を省略し、主として異なる部分につい
て説明する。この発明の第１実施形態は、図１に示すよ
うであって、光沢度選択式定着装置１は、発熱体16を有
する光沢用の第１加熱部材である加熱定着ローラ２と、
これに圧接する第１加圧部材である第１加圧ローラ３と
を有する加熱定着装置１ａの後工程部、すなわち加熱定
着装置１ａによってトナー４が熱定着されたシート部材
10（以下転写紙10という）が排出された後の工程部に作
動の選択を自在にして光沢度低減手段５を設けたもので
ある。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the embodiments of the present invention shown in FIGS. 1 and 2, the same parts as those in the prior art will be referred to by the same reference numerals and description thereof will be omitted, and mainly different parts will be described. The first embodiment of the present invention is as shown in FIG. 1, and a glossiness selective fixing device 1 includes a heat fixing roller 2 which is a first heating member for gloss having a heating element 16,
A sheet member in which the toner 4 is heat-fixed by the heat fixing device 1a, that is, a post-process portion of the heat fixing device 1a having a first pressure roller 3 which is a first pressure member in pressure contact with this.
The gloss reduction means 5 is provided in the process section after 10 (hereinafter referred to as the transfer paper 10) is discharged so that the operation can be freely selected.
【００１０】光沢度低減手段５は、非光沢表面を有し、
第２加熱部材である発熱体16を有する光沢度低減加熱ロ
ーラ６と、この光沢度低減加熱ローラ６に圧接する第２
加圧部材である第２加圧ローラ７とを具え、これらのロ
ーラ６，７の直径を加熱定着ローラ２、または第１加圧
ローラ３の直径より小さいものとしたものである。そし
て、光沢度低減加熱ローラ６の表面粗さ（JIS B06001-1
982中心線平均粗さRd)を、表面粗さが0.5μm程度のもの
に形成されている加熱定着ローラ２の表面粗さより大き
い、例えば表面粗さが２μm以上のものにして、さらに
その表面を図２に示すようなドット状、綾目状、十文字
状、または、ストライプ状のいずれかの模様を選択して
凸部分と凹部分とを形成する。なお、16′は光沢度低減
加熱ローラ６の発熱体、21は光沢度低減加熱ローラ６の
クリーニングローラである。The glossiness reducing means 5 has a non-glossy surface,
A gloss reduction heating roller 6 having a heating element 16 which is a second heating member, and a second press contacting the gloss reduction heating roller 6.
The second pressure roller 7 which is a pressure member is provided, and the diameters of these rollers 6 and 7 are made smaller than the diameter of the heat fixing roller 2 or the first pressure roller 3. Then, the surface roughness of the gloss reduction heating roller 6 (JIS B06001-1
982 center line average roughness Rd) is larger than the surface roughness of the heat fixing roller 2 formed to have a surface roughness of about 0.5 μm, for example, a surface roughness of 2 μm or more, and the surface is A convex portion and a concave portion are formed by selecting any of the dot-shaped, cross-shaped, cross-shaped, or striped patterns as shown in FIG. Reference numeral 16 'is a heating element of the gloss reduction heating roller 6, and 21 is a cleaning roller of the gloss reduction heating roller 6.
【００１１】転写紙10を光沢度低減手段５を通過させて
非光沢のものとし、または光沢度低減手段５を通過させ
ずに直接排出する動作の選択を自在にする切換部材８
を、加熱定着ローラ２の転写紙10の排出側と光沢度低減
手段５との転写紙経路の中間に、図示しない機体に設け
た支軸９に回動自在に設けたものである。この切換部材
８の方向を図１の実線で示す方向に位置させて、転写紙
10の搬送方向を画像表面が光沢のついたまま排出する
か、または、鎖線で示す方向に切換えて、光沢度低減手
段５の方向に搬送して、画像表面を非光沢のものとする
ようになっている。A switching member 8 that allows the transfer paper 10 to pass through the glossiness reducing means 5 to be non-glossy or to directly discharge the transfer paper 10 without passing through the glossiness reducing means 5.
Is rotatably provided on a support shaft 9 provided on a machine body (not shown) in the middle of the transfer paper path between the transfer paper 10 discharge side of the heat fixing roller 2 and the glossiness reducing means 5. The direction of this switching member 8 is positioned in the direction shown by the solid line in FIG.
The conveying direction of 10 is discharged while the image surface is glossy, or is switched to the direction shown by the chain line, and is conveyed in the direction of the gloss reduction means 5 so that the image surface becomes non-glossy. Has become.
【００１２】また、加熱定着ローラ２の温度、及び光沢
度低減加熱ローラ６の温度制御は、加熱定着ローラ２
と、光沢度低減加熱ローラ６との温度が所定のものとな
るように、それぞれのローラ２，６に設けられた温度セ
ンサ22ａ、及び22ｂによって検知されたそれぞれの温度
に対応して、図示しない制御手段が、加熱定着ローラ２
の発熱体16と、光沢度低減加熱ローラ６の発熱体16′と
の通電をオン、オフ制御する。The temperature of the heat fixing roller 2 and the temperature of the gloss reduction heating roller 6 are controlled by the heat fixing roller 2
In order to keep the temperature of the gloss reduction heating roller 6 at a predetermined value, the temperature is not shown in the figure corresponding to the temperatures detected by the temperature sensors 22a and 22b provided on the rollers 2 and 6, respectively. The control means is the heat fixing roller 2
The heating element 16 and the heating element 16 'of the gloss reduction heating roller 6 are turned on and off.
【００１３】このようなものにあって、光沢度低減加熱
ローラ６と第１加圧ローラ３との直径を小さく形成した
ので、光沢度低減手段５の占有スペースが小さくてす
み、光沢度選択式定着装置１のスペースを、光沢、非光
沢用のそれぞれ独立した大型の２台の加熱定着装置を具
えたものより小さくすることができ、コスト上昇を抑制
することができる。In such a case, since the heating roller 6 for reducing glossiness and the first pressure roller 3 are formed to have a small diameter, the space occupied by the glossiness reducing means 5 can be small, and the glossiness selecting formula can be used. The space of the fixing device 1 can be made smaller than that provided with two large-sized heat fixing devices which are independent for gloss and non-gloss respectively, and the cost increase can be suppressed.
【００１４】また、加熱定着装置１ａによって定着され
る以前のトナー４は、図３に示すようであり、特にフル
カラー画像の色調再現性を良好にするために、定着によ
って、図４に示すように、トナー４の粒形状を留めず、
かつトナー層中に空隙が発生しないよう充分にトナー４
に熱及び必要な圧力を与える条件に加熱定着装置１ａの
加熱温度と加圧力とが設定されており、さらに、要望に
応じて光沢度低減手段５を選択して、図５に示すよう
に、加熱定着ローラ２表面の粗さよりその粗さを大きい
ものに処理できるので、色重ねコピーの色調再現が充分
にできて、光沢低減処理後も発色性が変化せず、表面の
しま模様も発生せずに適当な非光沢を有する良好なカラ
ー画像がえられる。また、白黒画像においても同様であ
る。The toner 4 before being fixed by the heat fixing device 1a is as shown in FIG. 3, and in particular, in order to improve the color tone reproducibility of a full-color image, as shown in FIG. , Without stopping the grain shape of Toner 4,
In addition, the toner 4 should be used sufficiently so that voids do not occur in the toner layer.
The heating temperature and pressure of the heating and fixing device 1a are set under the conditions of applying heat and necessary pressure to the sheet, and further, the glossiness reducing means 5 is selected in accordance with the demand, and as shown in FIG. Since the roughness of the heating and fixing roller 2 can be made larger than that of the surface, the color tone of the color-overlapped copy can be sufficiently reproduced, the color developability does not change even after the gloss reduction process, and the surface stripe pattern does not occur. A good color image with suitable non-gloss is obtained. The same applies to black and white images.
【００１５】第２実施形態は、図６に示すようであっ
て、第１実施形態の光沢度低減加熱ローラ６に圧接する
第２加圧ローラ７を除去し、光沢度低減加熱ローラ６を
作動させる場合、必要な加圧を行うローラとして第１加
圧ローラ３を使用したものである。In the second embodiment, as shown in FIG. 6, the second pressure roller 7 which is in pressure contact with the gloss reduction heating roller 6 of the first embodiment is removed and the gloss reduction heating roller 6 is operated. In this case, the first pressure roller 3 is used as a roller for applying the necessary pressure.
【００１６】このようなものにあって、第１実施形態の
ものより、さらに省スペースと、コストダウンとをはか
ることができる。In such a structure, it is possible to further reduce the space and cost as compared with the first embodiment.
【００１７】第３実施形態は、定着後画像の表面のトナ
ー４（Ｙ）の表層を軟化させて凹凸を強調させるための
ものであるので、第１実施形態において、光沢度低減加
熱ローラ６を加熱する発熱体16′の最大発熱量を加熱定
着ローラ２の熱体16の最大発熱量（通常数百ワット）に
対して、その数分の１から数十分の１と小さくしたもの
である。このようなものにおいて、消費電力を節減する
ことができる。この第３実施形態を第２実施形態に用い
ることができる。In the third embodiment, the surface layer of the toner 4 (Y) on the surface of the image after fixing is softened to emphasize the unevenness. Therefore, in the first embodiment, the gloss reduction heating roller 6 is used. The maximum heat generation amount of the heating element 16 'to be heated is smaller than the maximum heat generation amount (usually several hundred watts) of the heating element 16 of the heat fixing roller 2 by a fraction of one to several tenths. . In such a case, power consumption can be saved. This third embodiment can be used for the second embodiment.
【００１８】第４実施形態は、第１実施形態において、
加熱定着ローラ２、及び光沢度低減加熱ローラ６の温度
制御を、制御手段がそれらの通電をオン、オフ制御によ
って行う際、両者の発熱体16，16′が同時に通電される
ような場合となったとき、その制御は、表１、ケース
２，３に示すように、両者の発熱体16，16′が互いにそ
のピーク電流の通電タイミングが重ならないようにして
交番状にオン、オフするものである。このようなものに
あって、両者の電流のピークが重って流れないので最大
消費電力を抑制することができる。なお、発熱体16，1
6′の通電制御は上記にかぎらず、表１、ケース１に示
すように、両方の発熱体16，16′のピーク電流とオフ時
との中間の電流が通電されるようにして同時に通電する
制御としてもよい。この第４実施形態を第２，３実施形
態に用いることができる。The fourth embodiment differs from the first embodiment in that
When the control means controls the temperature of the heat fixing roller 2 and the gloss reduction heating roller 6 by turning on and off the energization of them, both heating elements 16 and 16 'are energized at the same time. In this control, as shown in Table 1 and cases 2 and 3, the heating elements 16 and 16 'are turned on and off in an alternating manner so that their peak currents do not overlap with each other in their energization timings. is there. In such a case, the peaks of both currents do not overlap and thus the maximum power consumption can be suppressed. The heating elements 16 and 1
The energization control of 6'is not limited to the above, and as shown in Table 1 and Case 1, energization is performed at the same time so that an intermediate current between the peak current of both heating elements 16 and 16 'and the off time is applied. It may be controlled. This fourth embodiment can be used for the second and third embodiments.
【００１９】[0019]
【表１】 [Table 1]
【００２０】第５実施形態は、第１実施形態において、
光沢度低減手段５に設けられた加圧を行う付勢手段の加
圧力（ローラの単位長さ換算値）を加熱定着装置１ａの
それより小さくしたものである。このようなものにあっ
て、光沢度低減加熱ローラ６は、加熱定着ローラ２より
コピー紙に付与する熱量が少なくてすみ、また、加圧力
についても定着画像の表面のみを凹凸変形させればよい
ので、光沢度低減加熱ローラ６のローラ径、たわみに対
する強度をより小さなものとすることができて、コスト
ダウンをはかることができる。この第５実施形態は第２
〜４実施形態に用いることができる。The fifth embodiment differs from the first embodiment in that
The pressing force of the biasing means for applying a pressure provided to the glossiness reducing means 5 (converted value of the unit length of the roller) is made smaller than that of the heat fixing device 1a. In such a case, the gloss reduction heating roller 6 needs less heat to be applied to the copy paper than the heating and fixing roller 2, and the pressing force only needs to deform the surface of the fixed image unevenly. Therefore, the roller diameter of the heating roller 6 for reducing glossiness and the strength against bending can be made smaller, and the cost can be reduced. This fifth embodiment is the second
~ 4 Embodiments can be used.
【００２１】第６実施形態は、第１実施形態において、
光沢度低減加熱ローラ６からコピー紙に逃げる熱量を少
なくし、光沢度低減加熱ローラ６の発熱体16′の発熱容
量を加熱定着ローラ２のそれより小さくしたものであ
る。このようなものは、光沢度低減手段５のウォームア
ップ時間を短縮することができ、通紙時、温度の過剰低
下がないうえ、消費電力を節減することができる。この
第６実施形態を第２〜５実施形態に用いることができ
る。The sixth embodiment differs from the first embodiment in that
The amount of heat escaping from the gloss reduction heating roller 6 to the copy paper is reduced, and the heat generation capacity of the heating element 16 'of the gloss reduction heating roller 6 is made smaller than that of the heat fixing roller 2. In such a case, the warm-up time of the glossiness reducing means 5 can be shortened, the temperature does not excessively drop when the paper is passed, and the power consumption can be saved. This 6th Embodiment can be used for 2nd-5th Embodiment.
【００２２】第７実施形態は、第１実施形態において、
加熱定着ローラ２と、光沢度低減加熱ローラ６との表面
に、転写紙10上のトナー４を圧接するシリコン樹脂層ま
たはフッ素樹脂層などからなり、図示しない圧接部材を
設け、その表面粗さは第１実施形態と同様のものとした
ものである。このようなものにあって、加熱定着ローラ
２及び光沢度低減加熱ローラ６に設けた圧接部材によっ
て前記各ローラ２，６と転写紙10のトナー４への熱伝導
効率が高くなり適当な光沢、非光沢を有する定着画像が
効率よくえられる。この第５実施形態は第２〜６実施形
態に用いることができる。The seventh embodiment differs from the first embodiment in that
On the surfaces of the heat fixing roller 2 and the gloss reduction heating roller 6, a silicon resin layer or a fluorine resin layer for pressing the toner 4 on the transfer paper 10 is provided, and a pressure contact member (not shown) is provided. It is similar to the first embodiment. In such a case, the pressure contact members provided on the heat fixing roller 2 and the gloss reduction heating roller 6 increase the heat conduction efficiency to the rollers 4 and 6 and the toner 4 of the transfer paper 10, and to obtain an appropriate gloss, A fixed image having non-gloss can be efficiently obtained. This 5th Embodiment can be used for 2nd-6th Embodiment.
【００２３】[0023]
【発明の効果】この発明は、前記のようであって、請求
項１に記載の発明は、通電により発熱する発熱体を有し
た第１加熱部材と、この第１加熱部材に圧接する第１加
圧部材とを有する加熱定着装置の定着の後工程部に作動
の選択を自在にして光沢度低減手段を設け、この光沢度
低減手段は、通電により発熱する発熱体を有した第２加
熱部材と、この第２加熱部材に圧接する第２加圧部材と
を有し、前記加熱定着装置の定着の工程部と前記光沢度
低減手段との中間に、搬送方向を切換えて、前記光沢度
低減手段を通過させて非光沢のものとし、または光沢度
低減手段を通過させずに直接排出する動作の選択を自在
にする切換部材を設け、前記光沢度低減手段の第２加熱
部材は、その表面粗さを前記加熱定着装置の第１加熱部
材の表面粗さより大きくした非光沢表面を有するととも
に、この第１加熱部材の発熱体への電流がピークとなる
タイミングと前記第２加熱部材の発熱体への電流がピー
クとなるタイミングとが互いに異なり重ならないように
したものであり、請求項２に記載の発明は、第２加熱部
材の非光沢表面を、ドット状、綾目状、十文字状、また
は、ストライプ状のいずれかの模様を選択して形成した
凸部分と凹部分とからなる非光沢表面としたので、光
沢、非光沢画像を簡単な操作で形成することができ、光
沢度低減手段搭載による大型化とコスト上昇を抑制でき
るうえ、カラーコピーの場合、色重ねコピーの色調再現
が充分にできるよう完全に定着した後、光沢低減処理を
行っていて、光沢低減処理後も発色性が変化しなくて良
好な定着画像がえられるという効果がある。また、加熱
定着装置の発熱体への電流がピークとなるタイミング
と、光沢度低減手段の発熱体への電流がピークとなるタ
イミングとが重ならないようにしたので、最大消費電力
を抑制できるという効果がある。 The present invention is as described above, and the invention according to claim 1 has a heating element that generates heat when energized.
A first heating member, the gloss reducing means in the freely selected for actuating the process unit after the fixing of the heat-fixing device having a first pressure member pressed against the first heating member is provided with, this gloss
The reducing means includes a second heating element that has a heating element that generates heat when energized.
A heat member and a second pressure member that is in pressure contact with the second heating member
And a non-glossy one by switching the conveying direction between the fixing process section of the heat fixing device and the glossiness reducing means and passing through the glossiness reducing means, or a glossiness reducing means. The second heating of the glossiness reducing means is provided by providing a switching member that allows the user to freely select the operation of directly discharging without passing through
The member has the surface roughness of the first heating unit of the heat fixing device.
It has a matte surface that is larger than the surface roughness of the material.
And the current to the heating element of the first heating member reaches a peak
The timing and the current to the heating element of the second heating member are different from each other.
Do not overlap with the timing when it becomes
Are those the invention of claim 2, the second heating unit
The non-glossy surface of the material can be dotted, cross-shaped, cross-shaped, or
Was formed by selecting one of the stripe patterns
Since it has a non-glossy surface consisting of convex parts and concave parts, it is possible to form glossy and non-glossy images by a simple operation, and it is possible to suppress the size increase and cost increase by installing glossiness reduction means, In this case, the gloss reduction processing is performed after the fixing is completed so that the color tone of the color superposed copy can be sufficiently reproduced, and there is an effect that a good fixed image can be obtained without changing the coloring property even after the gloss reduction processing. . Also heating
Timing when the current to the heating element of the fixing device peaks
And the current to the heating element of the gloss reduction means reaches a peak.
Maximum power consumption because it does not overlap with iming
Has the effect of suppressing
【００２４】請求項３に記載の発明は、第１加圧部材が
第２加圧部材を兼ねるので、光沢度低減手段搭載による
装置の大型化と、コスト上昇とを抑制できるという効果
がある。According to the third aspect of the invention, since the first pressure member also serves as the second pressure member, there is an effect that it is possible to suppress an increase in the size of the apparatus and a cost increase by mounting the glossiness reducing means.
【００２５】請求項４に記載の発明は、加熱定着装置の
発熱体の最大発熱量より光沢度低減手段の発熱体の最大
発熱量を小さくしたので、消費電力を低減することがで
きて、定着装置の大型化と、コスト上昇とを抑制できる
という効果がある。According to the fourth aspect of the present invention, the maximum heat generation amount of the heating element of the glossiness reducing means is made smaller than the maximum heat generation amount of the heating element of the heat fixing device. There is an effect that an increase in size of the device and an increase in cost can be suppressed.
【００２６】請求項５に記載の発明は、前記両方の発熱
体に同時に通電する場合には、該両方の発熱体のピーク
電流とオフ時との中間の電流が通電されるようにして同
時に通電することにより、加熱定着装置の発熱体への電
流がピークとなるタイミングと、光沢度低減手段の発熱
体への電流がピークとなるタイミングとが重ならないよ
うにしたので、最大消費電力を抑制できるという効果が
ある。According to the invention of claim 5, both of the heat generation
When the body is energized simultaneously, the peaks of both heating elements
The current in the middle between the current and off
By turning on electricity at the time, the timing when the current to the heating element of the heating and fixing device reaches the peak does not overlap with the timing when the current to the heating element of the glossiness reducing unit reaches the peak. The effect is that it can be suppressed.
【００２７】請求項６に記載の発明は、加熱定着装置の
加圧力より、光沢度低減手段の加圧力を小さくしたの
で、定着装置の大型化と、コスト上昇とを抑制できると
いう効果がある。According to the sixth aspect of the present invention, since the pressing force of the glossiness reducing means is made smaller than the pressing force of the heating and fixing device, there is an effect that it is possible to suppress the increase in size of the fixing device and the increase in cost.
【００２８】請求項７に記載の発明は、加熱定着装置の
発熱体の発熱により昇温する部材の熱容量より光沢度低
減手段の発熱により昇温する部材の熱容量を小さくした
ので、光沢度低減手段のウォームアップ時間の短縮と消
費電力の節減とをはかることができて、定着装置の大型
化と、コスト上昇とを抑制できるという効果がある。According to the seventh aspect of the invention, the heat capacity of the member heated by the heat of the gloss reduction means is made smaller than the heat capacity of the member heated by the heat of the heating element of the heat fixing device. It is possible to reduce the warm-up time and power consumption, and it is possible to suppress an increase in the size of the fixing device and an increase in cost.
【００２９】請求項８に記載の発明は、加熱定着装置の
第１加熱部材と、光沢度低減手段の第２加熱部材との表
面に圧接部材を設けるとともに、前記第２加熱部材の圧
接部材の表面粗さが第１加熱部材の圧接部材の表面粗さ
より大であるので、コピー面への熱伝導効率が高くて、
消費電力を節減することができ、かつ、定着部での光沢
度の高度化、光沢度低減部での光沢度低減化を効率良く
行うことができるという効果がある。According to an eighth aspect of the present invention, a pressure contact member is provided on the surfaces of the first heating member of the heat fixing device and the second heating member of the glossiness reducing unit, and the pressure contact member of the second heating member is provided. Since the surface roughness is larger than the surface roughness of the pressure contact member of the first heating member, the heat transfer efficiency to the copy surface is high,
There is an effect that power consumption can be saved, and that the glossiness at the fixing unit and the glossiness at the glossiness reducing unit can be efficiently improved.
【図１】この発明の第１実施形態の概略縦断面図であ
る。FIG. 1 is a schematic vertical sectional view of a first embodiment of the present invention.
【図２】同上の第１実施形態の光沢度低減加熱ローラの
表面を凸部分と凹部分とに形成する模様図である。FIG. 2 is a pattern diagram in which the surface of the heating roller for reducing glossiness according to the first embodiment is formed into a convex portion and a concave portion.
【図３】同上の第１実施形態のトナー像の未定着の状態
を示す説明図である。FIG. 3 is an explanatory view showing an unfixed state of the toner image according to the first embodiment.
【図４】同上の第１実施形態のトナー像が光沢を有する
定着の状態を示す説明図である。FIG. 4 is an explanatory diagram showing a fixing state in which the toner image of the first embodiment has gloss.
【図５】同上の第１実施形態のトナー像に非光沢を形成
して定着する状態を示す説明図である。FIG. 5 is an explanatory diagram showing a state in which non-gloss is formed and fixed on the toner image of the first embodiment.
【図６】同上の第２実施形態の概略縦断面図である。FIG. 6 is a schematic vertical sectional view of a second embodiment of the above.
【図７】従来の光沢度選択式定着装置の概略縦断面図で
ある。FIG. 7 is a schematic vertical sectional view of a conventional glossiness selective fixing device.
【図８】従来の他の光沢度選択式定着装置の概略縦断面
図である。FIG. 8 is a schematic vertical sectional view of another conventional glossiness selection type fixing device.
１ａ 加熱定着装置 ２ 加熱定着ローラ ３ 第１加圧ローラ ４ トナー ５ 光沢度低減手段 ６ 光沢度低減加熱ローラ ７ 第２加圧ローラ ８ 切換部材 10 転写紙 1a Heat fixing device 2 Heat fixing roller 3 First pressure roller 4 Toner 5 Gloss reduction means 6 Gloss reduction heating roller 7 Second pressure roller 8 Switching member 10 Transfer paper
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭54−83444（ＪＰ，Ａ) 特開 昭53−143339（ＪＰ，Ａ) 特開 平７−311505（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) G03G 13/20 G03G 15/20 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP 54-83444 (JP, A) JP 53-143339 (JP, A) JP 7-311505 (JP, A) (58) Field (Int.Cl. 7 , DB name) G03G 13/20 G03G 15/20
Claims (8)
加熱部材と、この第１加熱部材に圧接する第１加圧部材
とを有する加熱定着装置の定着の後工程部に作動の選択
を自在にして光沢度低減手段を設け、この光沢度低減手
段は、通電により発熱する発熱体を有した第２加熱部材
と、この第２加熱部材に圧接する第２加圧部材とを有
し、 前記加熱定着装置の定着の工程部と前記光沢度低減手段
との中間に、搬送方向を切換えて、前記光沢度低減手段
を通過させて非光沢のものとし、または光沢度低減手段
を通過させずに直接排出する動作の選択を自在にする切
換部材を設け、前記光沢度低減手段の第２加熱部材は、
その表面粗さを前記加熱定着装置の第１加熱部材の表面
粗さより大きくした非光沢表面を有するとともに、この
第１加熱部材の発熱体への電流がピークとなるタイミン
グと前記第２加熱部材の発熱体への電流がピークとなる
タイミングとが互いに異なり重ならないようにしたこと
を特徴とする光沢度選択式定着装置。1. A first device having a heating element that generates heat when energized .
A heating element, a gloss reducing means in the freely selected for actuating the process unit after the fixing of the pressure contact with the first heating member heating the fixing device having a first pressure member provided, the gloss reducing hand
The step is a second heating member having a heating element that generates heat when energized.
And a second pressure member that is in pressure contact with the second heating member.
Then , the conveyance direction is switched between the fixing process section of the heat fixing device and the glossiness reducing means to pass the glossiness reducing means to make it non-glossy, or pass the glossiness reducing means. A switching member that allows the user to freely select the operation of directly discharging the ink is not provided, and the second heating member of the glossiness reducing means is
The surface roughness is the surface of the first heating member of the heat fixing device.
It has a matte surface that is larger than the roughness and
Timein where the current to the heating element of the first heating member reaches a peak
And the current to the heating element of the second heating member peaks
A glossiness selection type fixing device characterized in that the timings are different from each other so that they do not overlap .
表面をドット状、綾目状、十文字状、または、ストライ
プ状のいずれかの模様を選択して形成した凸部分と凹部
分とからなる非光沢表面であることを特徴とする請求項
１に記載の光沢度選択式定着装置。 2. The non-glossy surface of the second heating member is
Dot-shaped, cross-shaped, cross-shaped, or strike the surface
Convex portion and concave portion formed by selecting one of the
The glossiness-selective fixing device according to claim 1, wherein the fixing device has a non-glossy surface composed of the following components.
とを特徴とする請求項２に記載の光沢度選択式定着装
置。3. The glossiness selective fixing device according to claim 2, wherein the first pressure member also serves as the second pressure member.
光沢度低減手段の発熱体の最大発熱量を小さくしたこと
を特徴とする請求項１に記載の光沢度選択式定着装置。4. The glossiness selection type fixing device according to claim 1, wherein the maximum heat generation amount of the heating element of the glossiness reducing means is set smaller than the maximum heat generation amount of the heating element of the heat fixing device.
には、該両方の発熱体のピーク電流とオフ時との中間の
電流が通電されるようにして同時に通電していることを
特徴とする請求項１に記載の光沢度選択式定着装置。 5. A case in which both of the heating elements are energized at the same time
Is between the peak current of both of the heating elements and the off time.
The glossiness selective fixing device according to claim 1, wherein the fixing device is configured so that the currents are simultaneously supplied .
手段の加圧力を小さくしたことを特徴とする請求項１に
記載の光沢度選択式定着装置。6. The glossiness selective fixing device according to claim 1, wherein the pressure applied by the glossiness reducing means is smaller than the pressure applied by the heat fixing device.
温する部材の熱容量より光沢度低減手段の発熱によって
昇温する部材の熱容量を小さくしたことを特徴とする請
求項１に記載の光沢度選択式定着装置。7. claims, characterized in that to reduce the heat capacity of the members thus <br/> heating the heating of the heating element gloss reduction means than the heat capacity of the thus raising the temperature member to the heating of the heat fixing device 1. A glossiness selection type fixing device according to 1.
低減手段の第２加熱部材との表面に圧接部材を設けると
ともに、前記第２加熱部材の圧接部材の表面粗さが第１
加熱部材の圧接部材の表面粗さより大であることを特徴
とする請求項１に記載の光沢度選択式定着装置。8. A pressure contact member is provided on the surfaces of the first heating member of the heat fixing device and the second heating member of the gloss reduction means, and the surface roughness of the pressure contact member of the second heating member is first.
2. The glossiness selective fixing device according to claim 1, wherein the surface roughness of the heating member is larger than that of the pressing member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07367196A JP3515850B2 (en) | 1996-03-28 | 1996-03-28 | Gloss selectable fixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07367196A JP3515850B2 (en) | 1996-03-28 | 1996-03-28 | Gloss selectable fixing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09265243A JPH09265243A (en) | 1997-10-07 |
| JP3515850B2 true JP3515850B2 (en) | 2004-04-05 |
Family
ID=13524944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP07367196A Expired - Fee Related JP3515850B2 (en) | 1996-03-28 | 1996-03-28 | Gloss selectable fixing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3515850B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7960084B2 (en) | 2006-10-26 | 2011-06-14 | Ricoh Company, Ltd. | Method of preparing information recording medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002304072A (en) | 2001-01-31 | 2002-10-18 | Ricoh Co Ltd | Fixing device and image forming apparatus |
| US6980762B2 (en) * | 2003-12-19 | 2005-12-27 | Xerox Corporation | Modular multi-stage fusing system |
| KR100750155B1 (en) | 2006-01-10 | 2007-08-17 | 삼성전자주식회사 | Fusing device, electrophotographic color image forming apparatus adopting the same and printing meth thereof |
| JP4848830B2 (en) * | 2006-05-01 | 2011-12-28 | 富士ゼロックス株式会社 | Sheet conveying apparatus and image forming apparatus |
| JP5273426B2 (en) * | 2007-06-26 | 2013-08-28 | 株式会社リコー | Image forming apparatus |
| JP5515695B2 (en) * | 2009-12-02 | 2014-06-11 | コニカミノルタ株式会社 | Image forming apparatus and image forming system |
| JP2011011916A (en) * | 2010-10-05 | 2011-01-20 | Fuji Xerox Co Ltd | Sheet carrying device and image forming device |
| US8412087B2 (en) * | 2010-12-27 | 2013-04-02 | Xerox Corporation | Methods, apparatus, and systems for controlling a gloss of an image fixed by warm-pressure fixing |
| JP2013242344A (en) * | 2012-05-17 | 2013-12-05 | Fuji Xerox Co Ltd | Image forming apparatus |
| JP6330739B2 (en) * | 2015-06-18 | 2018-05-30 | 京セラドキュメントソリューションズ株式会社 | Fixing apparatus and image forming apparatus |
-
1996
- 1996-03-28 JP JP07367196A patent/JP3515850B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7960084B2 (en) | 2006-10-26 | 2011-06-14 | Ricoh Company, Ltd. | Method of preparing information recording medium |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09265243A (en) | 1997-10-07 |
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