JP6815851B2 - 定着装置 - Google Patents
定着装置 Download PDFInfo
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- JP6815851B2 JP6815851B2 JP2016233356A JP2016233356A JP6815851B2 JP 6815851 B2 JP6815851 B2 JP 6815851B2 JP 2016233356 A JP2016233356 A JP 2016233356A JP 2016233356 A JP2016233356 A JP 2016233356A JP 6815851 B2 JP6815851 B2 JP 6815851B2
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- heater
- spacer
- protective element
- contact
- fixing device
- Prior art date
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- 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
- G03G15/2017—Structural details of the fixing unit in general, e.g. cooling means, heat shielding means
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- 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
- G03G15/205—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 specially for the mode of operation, e.g. standby, warming-up, error
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- 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
- G03G15/55—Self-diagnostics; Malfunction or lifetime display
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- 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
- G03G15/80—Details relating to power supplies, circuits boards, electrical connections
-
- 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
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- 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
- G03G15/2064—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat using contact heat combined with pressure
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- 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
- G03G15/50—Machine control of apparatus for electrographic processes using a charge pattern, e.g. regulating differents parts of the machine, multimode copiers, microprocessor control
- G03G15/5004—Power supply control, e.g. power-saving mode, automatic power turn-off
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- 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
- G03G15/50—Machine control of apparatus for electrographic processes using a charge pattern, e.g. regulating differents parts of the machine, multimode copiers, microprocessor control
- G03G15/5012—Priority interrupt; Job recovery, e.g. after jamming or malfunction
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- 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
- G03G15/55—Self-diagnostics; Malfunction or lifetime display
- G03G15/553—Monitoring or warning means for exhaustion or lifetime end of consumables, e.g. indication of insufficient copy sheet quantity for a job
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
- G03G21/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
- G03G21/1642—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements for connecting the different parts of the apparatus
- G03G21/1652—Electrical connection means
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
- G03G21/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
- G03G21/1661—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements means for handling parts of the apparatus in the apparatus
- G03G21/1685—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements means for handling parts of the apparatus in the apparatus for the fixing unit
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G2215/00—Apparatus for electrophotographic processes
- G03G2215/20—Details of the fixing device or porcess
- G03G2215/2003—Structural features of the fixing device
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G2215/00—Apparatus for electrophotographic processes
- G03G2215/20—Details of the fixing device or porcess
- G03G2215/2003—Structural features of the fixing device
- G03G2215/2016—Heating belt
- G03G2215/2035—Heating belt the fixing nip having a stationary belt support member opposing a pressure member
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G2221/00—Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
- G03G2221/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts
- G03G2221/1639—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts for the fixing unit
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G2221/00—Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
- G03G2221/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts
- G03G2221/1651—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts for connecting the different parts
- G03G2221/166—Electrical connectors
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fixing For Electrophotography (AREA)
Description
(画像形成装置の全体構成)
図1を用いて、画像形成装置の全体構成の概要について説明する。給送トレイ1内に積載収納された記録材2は、図中時計回り方向に回転する給送ローラ3により給送され、搬送ローラ4に送られ、ベルト内駆動ローラ5と二次転写ローラ6のニップ部へ送られる。
ここで本実施例に関わる定着部(定着装置)について詳しく説明する。図2は定着装置の概略図である。加熱ユニット13は、筒状の定着フィルム18、定着フィルム18の内面に接触するヒータ19、ヒータ19を保持するホルダ20、ホルダ20を補強する金属製のステイ21を備えている。定着フィルム18は、例えば、耐熱性が高く、熱伝導性に優れた特性を有するポリイミドフィルムなどである。ヒータ19は、セラミックヒータやカーボンヒータなどであり、図示しない電源から供給される電力によって発熱する。ヒータ19は、ホルダ20の溝部に嵌めた状態でホルダに保持されている。ヒータ19、ホルダ20、ステイ21は、定着フィルム18の内部空間に配置されている。
次に、スペーサ24について、詳しく説明する。図5は、スペーサ24の斜視図、図6(a)はスペーサ24を記録材搬送方向の下流側から見た時の断面図、図6(b)はスペーサ24を加熱ユニットの長手方向の一端側から見た時の断面図である。
(スペーサの詳細)
実施例2のスペーサ34について、詳しく説明する。図7は、スペーサ34の斜視図、図7(a)はスペーサ34を記録材搬送方向の下流側から見た時の断面図、図7(b)はスペーサ24を加熱ユニットの長手方向の一端側から見た時の断面図である。
また中央部34aと端部34bの厚み差Xは、大きくすればするほどスペーサ34が傾くことができる。そのため圧解除時など保護素子22への押圧力が減りヒータ19と保護素子22の平行度が崩れた際にも、スペーサ34はヒータ19に追従することが可能になる。また、厚みの差Xは500μm程度以下に抑えておいた方が好ましい。
14 加圧ユニット
18 定着フィルム
19 ヒータ
20 ホルダ
21 ステイ
22 保護素子
23 温度検知素子
24、34 スペーサ
Claims (5)
- 筒状のフィルムと、
前記フィルムの内面に接触するヒータと、
前記フィルムを介して前記ヒータと共に定着ニップ部を形成するローラと、
前記ヒータからの熱により作動するスイッチ部を有し、前記ヒータへの電力供給を遮断するための保護素子と、
前記ヒータと前記保護素子の間に配置されているスペーサと、
を有し、前記定着ニップ部で記録材を挟持搬送しつつ記録材に形成された画像を記録材に定着する定着装置において、
前記スペーサは、前記保護素子と接触する側の面のうち、中央部よりも端部の方が前記保護素子から遠ざかるクラウン形状になっており、前記スペーサの前記保護素子との接触面積は、前記ヒータとの接触面積より小さく、前記スペーサは前記保護素子に対して傾くことができることを特徴とする定着装置。 - 前記スペーサは、前記保護素子との接触面おいて点接触、または線接触、または複数点が一列に並んで接触することを特徴とする請求項1に記載の定着装置。
- 前記スペーサと前記ヒータの間に前記ヒータよりも熱伝導性が高い伝熱板を有することを特徴とする請求項1又は2に記載の定着装置。
- 前記装置は更に、前記ローラと前記ヒータを離間させる方向に前記ヒータを移動させる離間機構を有し、前記離間機構によって前記ヒータが移動した際も、前記ヒータと前記スペーサが接触状態を維持することを特徴とする請求項1又は2に記載の定着装置。
- 前記装置は更に、前記ローラと前記ヒータを離間させる方向に前記ヒータを移動させる離間機構を有し、前記離間機構によって前記ヒータが移動した際も、前記伝熱板と前記スペーサが接触状態を維持することを特徴とする請求項3に記載の定着装置。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2016233356A JP6815851B2 (ja) | 2016-11-30 | 2016-11-30 | 定着装置 |
US15/823,312 US10642200B2 (en) | 2016-11-30 | 2017-11-27 | Fixing device with tiltable spacer between heater and safety |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2016233356A JP6815851B2 (ja) | 2016-11-30 | 2016-11-30 | 定着装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2018091934A JP2018091934A (ja) | 2018-06-14 |
JP6815851B2 true JP6815851B2 (ja) | 2021-01-20 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2016233356A Active JP6815851B2 (ja) | 2016-11-30 | 2016-11-30 | 定着装置 |
Country Status (2)
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US (1) | US10642200B2 (ja) |
JP (1) | JP6815851B2 (ja) |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4546233B2 (ja) * | 2004-12-10 | 2010-09-15 | キヤノン株式会社 | 像加熱装置 |
US8180240B2 (en) * | 2008-03-18 | 2012-05-15 | Lexmark International, Inc. | Color belt fuser warm-up time minimization |
JP2013041096A (ja) | 2011-08-15 | 2013-02-28 | Canon Inc | 像加熱装置 |
JP6071392B2 (ja) * | 2012-10-03 | 2017-02-01 | キヤノン株式会社 | 画像形成装置 |
US9335709B2 (en) * | 2012-10-03 | 2016-05-10 | Canon Kabushiki Kaisha | Image forming apparatus setting a control target temperature of a fixing portion, fixing an image on recording material, depending on a calculated suppliable electric power suppliable to a heater of the fixing portion |
JP5863739B2 (ja) * | 2012-11-21 | 2016-02-17 | キヤノン株式会社 | 像加熱装置 |
-
2016
- 2016-11-30 JP JP2016233356A patent/JP6815851B2/ja active Active
-
2017
- 2017-11-27 US US15/823,312 patent/US10642200B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
US20180150001A1 (en) | 2018-05-31 |
US10642200B2 (en) | 2020-05-05 |
JP2018091934A (ja) | 2018-06-14 |
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