JPH03122465U - - Google Patents
Info
- Publication number
- JPH03122465U JPH03122465U JP3146090U JP3146090U JPH03122465U JP H03122465 U JPH03122465 U JP H03122465U JP 3146090 U JP3146090 U JP 3146090U JP 3146090 U JP3146090 U JP 3146090U JP H03122465 U JPH03122465 U JP H03122465U
- Authority
- JP
- Japan
- Prior art keywords
- heating
- heat source
- pressure roller
- roller
- recording medium
- 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
- 238000010438 heat treatment Methods 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Fixing For Electrophotography (AREA)
Description
第１図はこの考案の一実施例であるレーザプリ
ンタの要部を示す断面図、第２図はそのレーザプ
リンタにおける普通紙定着の場合および封筒定着
の場合と第１の熱源および第２の熱源のオン・オ
フ状態との関係を示す図表、第３図はそのレーザ
プリンタの内部機構を示す全体概略構成図である
。第４図は従来の電子写真装置における定着器お
よび記録媒体の搬送路を示す断面図である。
１３……記録媒体、２３……定着器、３０……
加熱ローラ、３１……加熱兼加圧ローラ、３２…
…加圧ローラ、３３……金属パイプ、３５……離
型性層、３６……第１の熱源、３８……第２の熱
源、３９，４１……弾性層、４５……普通紙（記
録媒体）、４７……第１の搬送路、４８……封筒
（記録媒体）、５０……第２の搬送路、５１……
切換手段、５２……転写画像。
Fig. 1 is a sectional view showing the main parts of a laser printer that is an embodiment of this invention, and Fig. 2 shows the case of plain paper fixing, envelope fixing, and the first heat source and second heat source in the laser printer. FIG. 3 is an overall schematic diagram showing the internal mechanism of the laser printer. FIG. 4 is a sectional view showing a fixing device and a recording medium conveyance path in a conventional electrophotographic apparatus. 13... Recording medium, 23... Fixing device, 30...
Heating roller, 31... Heating and pressure roller, 32...
... Pressure roller, 33 ... Metal pipe, 35 ... Release layer, 36 ... First heat source, 38 ... Second heat source, 39, 41 ... Elastic layer, 45 ... Plain paper (recording medium), 47...first conveyance path, 48...envelope (recording medium), 50...second conveyance path, 51...
Switching means, 52...transfer image.
Claims (1)
を定着器で定着する電子写真装置において、 金属パイプ内に第１の熱源を内蔵し、その金属
パイプの外周面に薄い離型性層を形成してなる加
熱ローラと、 その加熱ローラに押し当て、内部に第２の熱源
を内蔵し、外周に厚い弾性層を形成してなる加熱
兼加圧ローラと、 その加熱兼加圧ローラに押し当て、外周に厚い
弾性層を形成してなる加圧ローラと、 前記加熱ローラと加熱兼加圧ローラとの間に向
けて形成する第１の搬送路と、 前記加熱兼加圧ローラと加圧ローラとの間に向
けて形成する第２の搬送路と、 そのいずれか一方の搬送路に向けて前記記録媒
体の搬送方向を切り換える切換手段と、 を備えてなる電子写真装置。[Claims for Utility Model Registration] In an electrophotographic device that fixes a transferred image on a recording medium conveyed after image transfer with a fixing device, a first heat source is built in a metal pipe, and a heat source is provided on the outer peripheral surface of the metal pipe. A heating roller formed with a thin releasable layer; a heating/pressure roller which is pressed against the heating roller, has a second heat source built in inside, and has a thick elastic layer formed on the outer periphery; a pressure roller pressed against the heating and pressure roller and forming a thick elastic layer on its outer periphery; a first conveyance path formed between the heating roller and the heating and pressure roller; An electrophotograph comprising: a second conveyance path formed between pressure rollers; and a switching means for switching the conveyance direction of the recording medium toward one of the two conveyance paths. Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3146090U JPH03122465U (en) | 1990-03-27 | 1990-03-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3146090U JPH03122465U (en) | 1990-03-27 | 1990-03-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03122465U true JPH03122465U (en) | 1991-12-13 |
Family
ID=31534232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3146090U Pending JPH03122465U (en) | 1990-03-27 | 1990-03-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03122465U (en) |
-
1990
- 1990-03-27 JP JP3146090U patent/JPH03122465U/ja active Pending
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