JPH0153791B2 - - Google Patents
Info
- Publication number
- JPH0153791B2 JPH0153791B2 JP58001878A JP187883A JPH0153791B2 JP H0153791 B2 JPH0153791 B2 JP H0153791B2 JP 58001878 A JP58001878 A JP 58001878A JP 187883 A JP187883 A JP 187883A JP H0153791 B2 JPH0153791 B2 JP H0153791B2
- Authority
- JP
- Japan
- Prior art keywords
- main part
- shaft
- fixing roller
- diameter
- center
- 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
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
- G03G15/2003—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
- G03G15/2053—Structural details of heat elements, e.g. structure of roller or belt, eddy current, induction heating
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fixing For Electrophotography (AREA)
Description
【発明の詳細な説明】
本発明は電子写真複写機等において、複写用紙
上に転写されたトナー像を定着するために使用す
る定着ローラに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fixing roller used in an electrophotographic copying machine or the like to fix a toner image transferred onto copy paper.
従来の定着ローラは、第１図に示すように一本
の金属パイプを絞り加工によつて中央部には太径
の主要部１を、又該主要部１の両外側には細径の
軸部２，２を設け、中芯の中空部にはヒーター３
を配置するように構成されていた。 As shown in Fig. 1, a conventional fixing roller is made by drawing a single metal pipe to form a main part 1 with a large diameter in the center, and a shaft with a small diameter on both outsides of the main part 1. parts 2 and 2 are provided, and a heater 3 is provided in the hollow part of the core.
It was configured to place.
そして、該定着ローラは、これを取付けるべき
複写機内の軸受の径に合わせて軸部２，２の外周
を切削するのが一般的であり、このとき、前記主
要部１の幅員が、ローラ収容部の大きさにより制
限されている場合には、当該主要部１の側壁４，
４を切削して長さを合わせるようにしていた。 Generally, the outer periphery of the shaft parts 2, 2 of the fixing roller is cut to match the diameter of the bearing in the copying machine to which it is installed, and at this time, the width of the main part 1 is If the size of the main part 1 is limited, the side wall 4 of the main part 1,
4 was cut to match the length.
しかしながら、前記絞り加工によつて一本の金
属パイプを太径の主要部１と細径の軸部２，２と
に一体成形すると、主要部１の側壁４，４と軸部
２，２とが接する隅部５，５を第２図に示すよう
に彎曲状に成形してしまうことを免がれず、この
ような形状に成形したローラに前記軸部２，２、
側壁４，４の切削加工を行うと、隅部５，５は第
３図に示すように、前記加工による切込み２Ａ，
４Ａが深く、該個所の肉厚を極めて薄くしてしま
うので、応力に対する強度が著しく低下し、従つ
てこのローラを定着時間の短縮のため、肉厚の薄
いパイプで造つたりすると、前記隅部５，５はロ
ール折れの原因となる欠点をもつていた。 However, when one metal pipe is integrally formed into the large diameter main part 1 and the small diameter shaft parts 2, 2 by the drawing process, the side walls 4, 4 of the main part 1 and the shaft parts 2, 2 It is inevitable that the corners 5, 5 where the two contact each other are formed into a curved shape as shown in FIG.
When the side walls 4, 4 are cut, the corners 5, 5 have the cut depths 2A, 2A, 2A, 2A, 2A, 2A, 2A, 2A, 3B,
4A is deep and the wall thickness at this point is extremely thin, so the strength against stress is significantly reduced. Therefore, if this roller is made of a thin pipe to shorten the fixing time, Parts 5 and 5 had a defect that caused the roll to break.
本発明は上記従来の定着ローラの欠点を除去す
るためになされたものであつて、ローラの主要部
の側壁と軸部とが接する隅部を、主要部の中心に
向けて入り込ませることによつて、当該隅部の応
力に対する強度を、たとえ前記軸部並びに側壁の
切削加工をしようとも充分保持できるようにした
定着ローラを提供することを目的とする。 The present invention has been made in order to eliminate the above-mentioned drawbacks of the conventional fixing roller, by making the corner where the side wall of the main part of the roller touches the shaft part move toward the center of the main part. Therefore, it is an object of the present invention to provide a fixing roller that can maintain sufficient strength against stress at the corner even if the shaft and side walls are cut.
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。 The present invention will be described in detail below based on embodiments shown in the drawings.
第４図に本発明の定着ローラの一実施例を示す
一部断面正面図である。 FIG. 4 is a partially sectional front view showing an embodiment of the fixing roller of the present invention.
中央部の太径の主要部６と該主要部６の両外側
の細径の軸部７，７とを一体成形した中空のロー
ラにおいて、主要部６の側壁８，８と軸部７，７
とが接する隅部９，９を、主要部６の中心に向け
て夫々入り込み状に構成すると共に、内芯の中空
部にはヒータ１０を配置する。 In a hollow roller in which a large-diameter main part 6 at the center and small-diameter shaft parts 7, 7 on both outer sides of the main part 6 are integrally molded, side walls 8, 8 of the main part 6 and shaft parts 7, 7
The corner portions 9, 9 where the two contact each other are configured to extend toward the center of the main portion 6, and a heater 10 is disposed in the hollow portion of the inner core.
以上のように構成する本発明の定着ローラに対
し、これを切削加工する際のその範囲は、軸部
７，７の場合は軸端から側壁８，８に面一の個所
までであり、又側壁８，８の場合には隅部９，９
の周囲となり、いずれの場合においても前記隅部
９，９は切削を免がれ、絞り加工した時の肉厚が
そのまま保持される。 When cutting the fixing roller of the present invention constructed as described above, the cutting range is from the shaft end to a point flush with the side walls 8, 8 in the case of the shaft portions 7, 7, and In the case of side walls 8, 8, corners 9, 9
In either case, the corner portions 9, 9 are spared from cutting, and the wall thickness when drawn is maintained as it is.
従つて本発明は、定着時間を短縮させるため、
ローラの材料に、たとえ肉厚の薄いパイプを使用
したとしても、隅部９，９の応力に対する強度は
低下することがなく、ロール折れの心配のない定
着ローラを提供することができるといつた効果が
ある。 Therefore, in order to shorten the fixing time, the present invention
Even if a thin-walled pipe is used as the material for the roller, the strength against stress at the corner portions 9, 9 will not decrease, and it is possible to provide a fixing roller with no fear of roll breakage. effective.
第１図は従来の定着ローラの一部断面正面図、
第２図は同、切削加工前の状態を示す一部拡大断
面図、第３図は同、軸部及び側壁面の切削加工後
の状態を示す一部拡大断面図、第４図は本発明の
定着ローラの一部断面正面図である。
図中６……主要部、７……軸部、８……側壁、
９……隅部。
Figure 1 is a partially sectional front view of a conventional fixing roller.
Fig. 2 is a partially enlarged sectional view of the same, showing the state before cutting, Fig. 3 is a partially enlarged sectional view of the same, showing the state of the shaft portion and side wall surface after cutting, and Fig. 4 is the invention of the present invention. FIG. 3 is a partially sectional front view of the fixing roller of FIG. In the figure 6... main part, 7... shaft part, 8... side wall,
9... Corner.
Claims (1)
には細径の軸部とを一体成形した中空のローラに
おいて、主要部の側壁と軸部とが接する隅部を、
主要部の中心に向けて入り込み状に構成したこと
を特徴とする定着ローラ。1. In a hollow roller integrally formed with a large-diameter main part in the center and small-diameter shaft parts on both outer sides of the main part, the corner where the side wall of the main part and the shaft part contact,
A fixing roller characterized by being configured in a recessed manner toward the center of the main part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP187883A JPS59126577A (en) | 1983-01-10 | 1983-01-10 | Fixing roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP187883A JPS59126577A (en) | 1983-01-10 | 1983-01-10 | Fixing roller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59126577A JPS59126577A (en) | 1984-07-21 |
| JPH0153791B2 true JPH0153791B2 (en) | 1989-11-15 |
Family
ID=11513812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP187883A Granted JPS59126577A (en) | 1983-01-10 | 1983-01-10 | Fixing roller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59126577A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6838128B1 (en) | 2002-02-05 | 2005-01-04 | Displaytech, Inc. | High polarization dopants for ferroelectric liquid crystal compositions |
| US7195719B1 (en) | 2001-01-03 | 2007-03-27 | Displaytech, Inc. | High polarization ferroelectric liquid crystal compositions |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2671348A (en) * | 1951-08-31 | 1954-03-09 | Adamson Stephens Mfg Co | Live shaft idler pulley |
-
1983
- 1983-01-10 JP JP187883A patent/JPS59126577A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7195719B1 (en) | 2001-01-03 | 2007-03-27 | Displaytech, Inc. | High polarization ferroelectric liquid crystal compositions |
| US6838128B1 (en) | 2002-02-05 | 2005-01-04 | Displaytech, Inc. | High polarization dopants for ferroelectric liquid crystal compositions |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59126577A (en) | 1984-07-21 |
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