IMAGE FORMING DEVICE AND FIXATION CONTROL METHOD
PROBLEM TO BE SOLVED: To reduce uneven gloss and heighten picture quality.SOLUTION: A control unit 3 of an image forming device 1 raises the output voltage of a DC-AC inverter 63 to 230 [V] in a warm-up mode and causes a heater 51 of a fixation unit 21 to be heated, and sets the output voltage to 15...
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| creator | TAKATSUKA RYO |
| description | PROBLEM TO BE SOLVED: To reduce uneven gloss and heighten picture quality.SOLUTION: A control unit 3 of an image forming device 1 raises the output voltage of a DC-AC inverter 63 to 230 [V] in a warm-up mode and causes a heater 51 of a fixation unit 21 to be heated, and sets the output voltage to 150 [V] when transitioning to a constant temperature mode after a target temperature is reached. This makes it possible for the control unit 3 to heighten the duty ratio of a heater-on signal S4 in feedback control. In addition, as a heater-on pattern of the heater-on signal S4 is set so that the on sections do not occur one after another in succession as much as possible, it is possible for the control unit 3 to ensure that a small-amplitude AC wave appears in a drive voltage DV every short interval. As a result, this makes it possible for the control unit 3 to suppress the amplitude of short cycle ripples at a surface temperature T2 of a heating belt 53 to a remarkable extent and suppress the occurrence of uneven gloss to a sufficient extent.SELECTED DRAWING: Figure 9
【課題】光沢ムラを軽減して画質を高め得るようにする。【解決手段】画像形成装置１の制御部３は、ウォームアップモードでＤＣ−ＡＣインバータ６３の出力電圧を２３０［Ｖ］として定着部２１のヒータ５１を加熱させ、目標温度に到達して定温制御モードに遷移させる場合に、該出力電圧を１５０［Ｖ］に設定する。これにより制御部３は、フィードバック制御においてヒータオン信号Ｓ４のデューティ比を高めることができる。これと共に制御部３は、ヒータオン信号Ｓ４において、オンの区間同士を極力連続させないようなヒータオンパターンを設定したため、駆動電圧ＤＶに振幅が小さい交流波を短い間隔ごとに出現させることができる。この結果、制御部３は、加熱ベルト５３の表面温度Ｔ２における短周期リップルの振幅を格段に小さく抑えて、光沢ムラの発生を十分に小さく抑えることができる。【選択図】図９ |
| format | Patent |
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【課題】光沢ムラを軽減して画質を高め得るようにする。【解決手段】画像形成装置１の制御部３は、ウォームアップモードでＤＣ−ＡＣインバータ６３の出力電圧を２３０［Ｖ］として定着部２１のヒータ５１を加熱させ、目標温度に到達して定温制御モードに遷移させる場合に、該出力電圧を１５０［Ｖ］に設定する。これにより制御部３は、フィードバック制御においてヒータオン信号Ｓ４のデューティ比を高めることができる。これと共に制御部３は、ヒータオン信号Ｓ４において、オンの区間同士を極力連続させないようなヒータオンパターンを設定したため、駆動電圧ＤＶに振幅が小さい交流波を短い間隔ごとに出現させることができる。この結果、制御部３は、加熱ベルト５３の表面温度Ｔ２における短周期リップルの振幅を格段に小さく抑えて、光沢ムラの発生を十分に小さく抑えることができる。【選択図】図９</description><language>eng ; jpn</language><subject>CINEMATOGRAPHY ; ELECTROGRAPHY ; ELECTROPHOTOGRAPHY ; HOLOGRAPHY ; MAGNETOGRAPHY ; PHOTOGRAPHY ; PHYSICS</subject><creationdate>2018</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20180809&DB=EPODOC&CC=JP&NR=2018124391A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76289</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20180809&DB=EPODOC&CC=JP&NR=2018124391A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>TAKATSUKA RYO</creatorcontrib><title>IMAGE FORMING DEVICE AND FIXATION CONTROL METHOD</title><description>PROBLEM TO BE SOLVED: To reduce uneven gloss and heighten picture quality.SOLUTION: A control unit 3 of an image forming device 1 raises the output voltage of a DC-AC inverter 63 to 230 [V] in a warm-up mode and causes a heater 51 of a fixation unit 21 to be heated, and sets the output voltage to 150 [V] when transitioning to a constant temperature mode after a target temperature is reached. This makes it possible for the control unit 3 to heighten the duty ratio of a heater-on signal S4 in feedback control. In addition, as a heater-on pattern of the heater-on signal S4 is set so that the on sections do not occur one after another in succession as much as possible, it is possible for the control unit 3 to ensure that a small-amplitude AC wave appears in a drive voltage DV every short interval. As a result, this makes it possible for the control unit 3 to suppress the amplitude of short cycle ripples at a surface temperature T2 of a heating belt 53 to a remarkable extent and suppress the occurrence of uneven gloss to a sufficient extent.SELECTED DRAWING: Figure 9
【課題】光沢ムラを軽減して画質を高め得るようにする。【解決手段】画像形成装置１の制御部３は、ウォームアップモードでＤＣ−ＡＣインバータ６３の出力電圧を２３０［Ｖ］として定着部２１のヒータ５１を加熱させ、目標温度に到達して定温制御モードに遷移させる場合に、該出力電圧を１５０［Ｖ］に設定する。これにより制御部３は、フィードバック制御においてヒータオン信号Ｓ４のデューティ比を高めることができる。これと共に制御部３は、ヒータオン信号Ｓ４において、オンの区間同士を極力連続させないようなヒータオンパターンを設定したため、駆動電圧ＤＶに振幅が小さい交流波を短い間隔ごとに出現させることができる。この結果、制御部３は、加熱ベルト５３の表面温度Ｔ２における短周期リップルの振幅を格段に小さく抑えて、光沢ムラの発生を十分に小さく抑えることができる。【選択図】図９</description><subject>CINEMATOGRAPHY</subject><subject>ELECTROGRAPHY</subject><subject>ELECTROPHOTOGRAPHY</subject><subject>HOLOGRAPHY</subject><subject>MAGNETOGRAPHY</subject><subject>PHOTOGRAPHY</subject><subject>PHYSICS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2018</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZDDw9HV0d1Vw8w_y9fRzV3BxDfN0dlVw9HNRcPOMcAzx9PdTcPb3Cwny91HwdQ3x8HfhYWBNS8wpTuWF0twMSm6uIc4euqkF-fGpxQWJyal5qSXxXgFGBoYWhkYmxpaGjsZEKQIAXnsmhQ</recordid><startdate>20180809</startdate><enddate>20180809</enddate><creator>TAKATSUKA RYO</creator><scope>EVB</scope></search><sort><creationdate>20180809</creationdate><title>IMAGE FORMING DEVICE AND FIXATION CONTROL METHOD</title><author>TAKATSUKA RYO</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JP2018124391A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; jpn</language><creationdate>2018</creationdate><topic>CINEMATOGRAPHY</topic><topic>ELECTROGRAPHY</topic><topic>ELECTROPHOTOGRAPHY</topic><topic>HOLOGRAPHY</topic><topic>MAGNETOGRAPHY</topic><topic>PHOTOGRAPHY</topic><topic>PHYSICS</topic><toplevel>online_resources</toplevel><creatorcontrib>TAKATSUKA RYO</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>TAKATSUKA RYO</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>IMAGE FORMING DEVICE AND FIXATION CONTROL METHOD</title><date>2018-08-09</date><risdate>2018</risdate><abstract>PROBLEM TO BE SOLVED: To reduce uneven gloss and heighten picture quality.SOLUTION: A control unit 3 of an image forming device 1 raises the output voltage of a DC-AC inverter 63 to 230 [V] in a warm-up mode and causes a heater 51 of a fixation unit 21 to be heated, and sets the output voltage to 150 [V] when transitioning to a constant temperature mode after a target temperature is reached. This makes it possible for the control unit 3 to heighten the duty ratio of a heater-on signal S4 in feedback control. In addition, as a heater-on pattern of the heater-on signal S4 is set so that the on sections do not occur one after another in succession as much as possible, it is possible for the control unit 3 to ensure that a small-amplitude AC wave appears in a drive voltage DV every short interval. As a result, this makes it possible for the control unit 3 to suppress the amplitude of short cycle ripples at a surface temperature T2 of a heating belt 53 to a remarkable extent and suppress the occurrence of uneven gloss to a sufficient extent.SELECTED DRAWING: Figure 9
【課題】光沢ムラを軽減して画質を高め得るようにする。【解決手段】画像形成装置１の制御部３は、ウォームアップモードでＤＣ−ＡＣインバータ６３の出力電圧を２３０［Ｖ］として定着部２１のヒータ５１を加熱させ、目標温度に到達して定温制御モードに遷移させる場合に、該出力電圧を１５０［Ｖ］に設定する。これにより制御部３は、フィードバック制御においてヒータオン信号Ｓ４のデューティ比を高めることができる。これと共に制御部３は、ヒータオン信号Ｓ４において、オンの区間同士を極力連続させないようなヒータオンパターンを設定したため、駆動電圧ＤＶに振幅が小さい交流波を短い間隔ごとに出現させることができる。この結果、制御部３は、加熱ベルト５３の表面温度Ｔ２における短周期リップルの振幅を格段に小さく抑えて、光沢ムラの発生を十分に小さく抑えることができる。【選択図】図９</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | CINEMATOGRAPHY ELECTROGRAPHY ELECTROPHOTOGRAPHY HOLOGRAPHY MAGNETOGRAPHY PHOTOGRAPHY PHYSICS |
| title | IMAGE FORMING DEVICE AND FIXATION CONTROL METHOD |
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