TONER AND MANUFACTURING METHOD THEREFOR
To provide a toner which includes a coating layer containing an organosilicon polymer that is highly adhesive even to a core particle having more wax content near a surface thereof, offers fixing wrapping resistance and development durability, allows for producing high quality images with less granu...
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| creator | HASHIMOTO TAKESHI KAMAE KENTARO OTSU TAKESHI SHIBAHARA SHOHEI IDA HAYATO HOTTA KATSUYUKI TOYOIZUMI NORITAKA SHIROYAMA KAZUHISA KAMIKURA KENTA |
| description | To provide a toner which includes a coating layer containing an organosilicon polymer that is highly adhesive even to a core particle having more wax content near a surface thereof, offers fixing wrapping resistance and development durability, allows for producing high quality images with less granular appearance for a prolonged period of time and suppressing external additive ghost images.SOLUTION: A toner provided herein comprises toner particles, each containing a core particle containing a binder resin and wax, and a coating layer containing an organosilicon polymer covering the core particle, and satisfies the following conditional expression: 0.7≤Qi-Qh≤20.0, where Qi (J/g) represents an endothermic peak heat absorption originating from the wax as obtained by differential scanning calorimetry (DSC), and Qh (J/g) represents an endothermic peak heat absorption originating from the wax as obtained by a DSC after hexane treatment of the core particles. The organosilicon polymer has a partial structure represented by the following formula (T3): R-Si(O1/2)3 ...(T3), where, in the formula T3, R represents an alkyl group or phenyl group having 1 to 6 carbon atoms, inclusive. In a 29Si-NMR measurement of tetrahydrofuran insoluble content of the toner particles, a ratio [ST3] of peak area of the partial structure represented by the formula (T3) to total peak area of the organosilicon polymer satisfies a relationship expressed as: ST3≥0.05. A compound A is present between the core particle and the coating layer, the compound A being a specific compound having a hydrophilic portion and a hydrophobic portion.SELECTED DRAWING: None
【課題】表面近傍にワックスの多いコア粒子に対しても密着性の高い有機ケイ素重合体を含む被覆層を有し、耐定着巻き付き性と現像耐久性、粒状感の少ない高品位な画像を長時間にわたって得られ、かつ外添剤ゴーストを抑制できるトナーを提供すること。【解決手段】結着樹脂とワックスを含有するコア粒子と、該コア粒子を被覆している有機ケイ素重合体を含む被覆層を有するトナー粒子を有するトナーであって、該コア粒子は、示差走査熱量測定（ＤＳＣ）によるワックスに由来する吸熱ピークの吸熱量をＱｉ（Ｊ／ｇ）、該コア粒子のヘキサン処理後のＤＳＣによるワックスに由来する吸熱ピークの吸熱量をＱｈ（Ｊ／ｇ）としたとき、以下の関係式を満たし、０．７≦Ｑｉ－Ｑｈ≦２０．０該有機ケイ素重合体は、下記式（Ｔ３）で表される部分構造を有し、前記トナー粒子のテトラヒドロフラン不溶分の29Ｓｉ－ＮＭＲの測定において、有機ケイ素重合体の全ピーク面積に対する、下記式（Ｔ３）で表される部分構造のピーク面積の割合［ＳＴ３］が、ＳＴ３≧０．０５の関係を満たし、Ｒ－Ｓｉ（Ｏ1/2）3（Ｔ３）（式（Ｔ３）中、Ｒは炭素数１以上６以下のアルキル基又はフェニル基を表す。）該コア粒子と被覆層との間に化合物Ａが存在しており、該化合物Ａが、親水部と疎水部とをもつ特定の化合物であることを特徴とする。【選択図】なし |
| format | Patent |
| fullrecord | <record><control><sourceid>epo_EVB</sourceid><recordid>TN_cdi_epo_espacenet_JP2022020896A</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>JP2022020896A</sourcerecordid><originalsourceid>FETCH-epo_espacenet_JP2022020896A3</originalsourceid><addsrcrecordid>eNrjZFAP8fdzDVJw9HNR8HX0C3VzdA4JDfL0c1fwdQ3x8HdRCPFwDXJ18w_iYWBNS8wpTuWF0twMSm6uIc4euqkF-fGpxQWJyal5qSXxXgFGBkZAZGBhaeZoTJQiADBWJE8</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>patent</recordtype></control><display><type>patent</type><title>TONER AND MANUFACTURING METHOD THEREFOR</title><source>esp@cenet</source><creator>HASHIMOTO TAKESHI ; KAMAE KENTARO ; OTSU TAKESHI ; SHIBAHARA SHOHEI ; IDA HAYATO ; HOTTA KATSUYUKI ; TOYOIZUMI NORITAKA ; SHIROYAMA KAZUHISA ; KAMIKURA KENTA</creator><creatorcontrib>HASHIMOTO TAKESHI ; KAMAE KENTARO ; OTSU TAKESHI ; SHIBAHARA SHOHEI ; IDA HAYATO ; HOTTA KATSUYUKI ; TOYOIZUMI NORITAKA ; SHIROYAMA KAZUHISA ; KAMIKURA KENTA</creatorcontrib><description>To provide a toner which includes a coating layer containing an organosilicon polymer that is highly adhesive even to a core particle having more wax content near a surface thereof, offers fixing wrapping resistance and development durability, allows for producing high quality images with less granular appearance for a prolonged period of time and suppressing external additive ghost images.SOLUTION: A toner provided herein comprises toner particles, each containing a core particle containing a binder resin and wax, and a coating layer containing an organosilicon polymer covering the core particle, and satisfies the following conditional expression: 0.7≤Qi-Qh≤20.0, where Qi (J/g) represents an endothermic peak heat absorption originating from the wax as obtained by differential scanning calorimetry (DSC), and Qh (J/g) represents an endothermic peak heat absorption originating from the wax as obtained by a DSC after hexane treatment of the core particles. The organosilicon polymer has a partial structure represented by the following formula (T3): R-Si(O1/2)3 ...(T3), where, in the formula T3, R represents an alkyl group or phenyl group having 1 to 6 carbon atoms, inclusive. In a 29Si-NMR measurement of tetrahydrofuran insoluble content of the toner particles, a ratio [ST3] of peak area of the partial structure represented by the formula (T3) to total peak area of the organosilicon polymer satisfies a relationship expressed as: ST3≥0.05. A compound A is present between the core particle and the coating layer, the compound A being a specific compound having a hydrophilic portion and a hydrophobic portion.SELECTED DRAWING: None
【課題】表面近傍にワックスの多いコア粒子に対しても密着性の高い有機ケイ素重合体を含む被覆層を有し、耐定着巻き付き性と現像耐久性、粒状感の少ない高品位な画像を長時間にわたって得られ、かつ外添剤ゴーストを抑制できるトナーを提供すること。【解決手段】結着樹脂とワックスを含有するコア粒子と、該コア粒子を被覆している有機ケイ素重合体を含む被覆層を有するトナー粒子を有するトナーであって、該コア粒子は、示差走査熱量測定（ＤＳＣ）によるワックスに由来する吸熱ピークの吸熱量をＱｉ（Ｊ／ｇ）、該コア粒子のヘキサン処理後のＤＳＣによるワックスに由来する吸熱ピークの吸熱量をＱｈ（Ｊ／ｇ）としたとき、以下の関係式を満たし、０．７≦Ｑｉ－Ｑｈ≦２０．０該有機ケイ素重合体は、下記式（Ｔ３）で表される部分構造を有し、前記トナー粒子のテトラヒドロフラン不溶分の29Ｓｉ－ＮＭＲの測定において、有機ケイ素重合体の全ピーク面積に対する、下記式（Ｔ３）で表される部分構造のピーク面積の割合［ＳＴ３］が、ＳＴ３≧０．０５の関係を満たし、Ｒ－Ｓｉ（Ｏ1/2）3（Ｔ３）（式（Ｔ３）中、Ｒは炭素数１以上６以下のアルキル基又はフェニル基を表す。）該コア粒子と被覆層との間に化合物Ａが存在しており、該化合物Ａが、親水部と疎水部とをもつ特定の化合物であることを特徴とする。【選択図】なし</description><language>eng ; jpn</language><subject>CINEMATOGRAPHY ; ELECTROGRAPHY ; ELECTROPHOTOGRAPHY ; HOLOGRAPHY ; MAGNETOGRAPHY ; PHOTOGRAPHY ; PHYSICS</subject><creationdate>2022</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=20220202&DB=EPODOC&CC=JP&NR=2022020896A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25562,76317</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20220202&DB=EPODOC&CC=JP&NR=2022020896A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>HASHIMOTO TAKESHI</creatorcontrib><creatorcontrib>KAMAE KENTARO</creatorcontrib><creatorcontrib>OTSU TAKESHI</creatorcontrib><creatorcontrib>SHIBAHARA SHOHEI</creatorcontrib><creatorcontrib>IDA HAYATO</creatorcontrib><creatorcontrib>HOTTA KATSUYUKI</creatorcontrib><creatorcontrib>TOYOIZUMI NORITAKA</creatorcontrib><creatorcontrib>SHIROYAMA KAZUHISA</creatorcontrib><creatorcontrib>KAMIKURA KENTA</creatorcontrib><title>TONER AND MANUFACTURING METHOD THEREFOR</title><description>To provide a toner which includes a coating layer containing an organosilicon polymer that is highly adhesive even to a core particle having more wax content near a surface thereof, offers fixing wrapping resistance and development durability, allows for producing high quality images with less granular appearance for a prolonged period of time and suppressing external additive ghost images.SOLUTION: A toner provided herein comprises toner particles, each containing a core particle containing a binder resin and wax, and a coating layer containing an organosilicon polymer covering the core particle, and satisfies the following conditional expression: 0.7≤Qi-Qh≤20.0, where Qi (J/g) represents an endothermic peak heat absorption originating from the wax as obtained by differential scanning calorimetry (DSC), and Qh (J/g) represents an endothermic peak heat absorption originating from the wax as obtained by a DSC after hexane treatment of the core particles. The organosilicon polymer has a partial structure represented by the following formula (T3): R-Si(O1/2)3 ...(T3), where, in the formula T3, R represents an alkyl group or phenyl group having 1 to 6 carbon atoms, inclusive. In a 29Si-NMR measurement of tetrahydrofuran insoluble content of the toner particles, a ratio [ST3] of peak area of the partial structure represented by the formula (T3) to total peak area of the organosilicon polymer satisfies a relationship expressed as: ST3≥0.05. A compound A is present between the core particle and the coating layer, the compound A being a specific compound having a hydrophilic portion and a hydrophobic portion.SELECTED DRAWING: None
【課題】表面近傍にワックスの多いコア粒子に対しても密着性の高い有機ケイ素重合体を含む被覆層を有し、耐定着巻き付き性と現像耐久性、粒状感の少ない高品位な画像を長時間にわたって得られ、かつ外添剤ゴーストを抑制できるトナーを提供すること。【解決手段】結着樹脂とワックスを含有するコア粒子と、該コア粒子を被覆している有機ケイ素重合体を含む被覆層を有するトナー粒子を有するトナーであって、該コア粒子は、示差走査熱量測定（ＤＳＣ）によるワックスに由来する吸熱ピークの吸熱量をＱｉ（Ｊ／ｇ）、該コア粒子のヘキサン処理後のＤＳＣによるワックスに由来する吸熱ピークの吸熱量をＱｈ（Ｊ／ｇ）としたとき、以下の関係式を満たし、０．７≦Ｑｉ－Ｑｈ≦２０．０該有機ケイ素重合体は、下記式（Ｔ３）で表される部分構造を有し、前記トナー粒子のテトラヒドロフラン不溶分の29Ｓｉ－ＮＭＲの測定において、有機ケイ素重合体の全ピーク面積に対する、下記式（Ｔ３）で表される部分構造のピーク面積の割合［ＳＴ３］が、ＳＴ３≧０．０５の関係を満たし、Ｒ－Ｓｉ（Ｏ1/2）3（Ｔ３）（式（Ｔ３）中、Ｒは炭素数１以上６以下のアルキル基又はフェニル基を表す。）該コア粒子と被覆層との間に化合物Ａが存在しており、該化合物Ａが、親水部と疎水部とをもつ特定の化合物であることを特徴とする。【選択図】なし</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>2022</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZFAP8fdzDVJw9HNR8HX0C3VzdA4JDfL0c1fwdQ3x8HdRCPFwDXJ18w_iYWBNS8wpTuWF0twMSm6uIc4euqkF-fGpxQWJyal5qSXxXgFGBkZAZGBhaeZoTJQiADBWJE8</recordid><startdate>20220202</startdate><enddate>20220202</enddate><creator>HASHIMOTO TAKESHI</creator><creator>KAMAE KENTARO</creator><creator>OTSU TAKESHI</creator><creator>SHIBAHARA SHOHEI</creator><creator>IDA HAYATO</creator><creator>HOTTA KATSUYUKI</creator><creator>TOYOIZUMI NORITAKA</creator><creator>SHIROYAMA KAZUHISA</creator><creator>KAMIKURA KENTA</creator><scope>EVB</scope></search><sort><creationdate>20220202</creationdate><title>TONER AND MANUFACTURING METHOD THEREFOR</title><author>HASHIMOTO TAKESHI ; KAMAE KENTARO ; OTSU TAKESHI ; SHIBAHARA SHOHEI ; IDA HAYATO ; HOTTA KATSUYUKI ; TOYOIZUMI NORITAKA ; SHIROYAMA KAZUHISA ; KAMIKURA KENTA</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JP2022020896A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; jpn</language><creationdate>2022</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>HASHIMOTO TAKESHI</creatorcontrib><creatorcontrib>KAMAE KENTARO</creatorcontrib><creatorcontrib>OTSU TAKESHI</creatorcontrib><creatorcontrib>SHIBAHARA SHOHEI</creatorcontrib><creatorcontrib>IDA HAYATO</creatorcontrib><creatorcontrib>HOTTA KATSUYUKI</creatorcontrib><creatorcontrib>TOYOIZUMI NORITAKA</creatorcontrib><creatorcontrib>SHIROYAMA KAZUHISA</creatorcontrib><creatorcontrib>KAMIKURA KENTA</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>HASHIMOTO TAKESHI</au><au>KAMAE KENTARO</au><au>OTSU TAKESHI</au><au>SHIBAHARA SHOHEI</au><au>IDA HAYATO</au><au>HOTTA KATSUYUKI</au><au>TOYOIZUMI NORITAKA</au><au>SHIROYAMA KAZUHISA</au><au>KAMIKURA KENTA</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>TONER AND MANUFACTURING METHOD THEREFOR</title><date>2022-02-02</date><risdate>2022</risdate><abstract>To provide a toner which includes a coating layer containing an organosilicon polymer that is highly adhesive even to a core particle having more wax content near a surface thereof, offers fixing wrapping resistance and development durability, allows for producing high quality images with less granular appearance for a prolonged period of time and suppressing external additive ghost images.SOLUTION: A toner provided herein comprises toner particles, each containing a core particle containing a binder resin and wax, and a coating layer containing an organosilicon polymer covering the core particle, and satisfies the following conditional expression: 0.7≤Qi-Qh≤20.0, where Qi (J/g) represents an endothermic peak heat absorption originating from the wax as obtained by differential scanning calorimetry (DSC), and Qh (J/g) represents an endothermic peak heat absorption originating from the wax as obtained by a DSC after hexane treatment of the core particles. The organosilicon polymer has a partial structure represented by the following formula (T3): R-Si(O1/2)3 ...(T3), where, in the formula T3, R represents an alkyl group or phenyl group having 1 to 6 carbon atoms, inclusive. In a 29Si-NMR measurement of tetrahydrofuran insoluble content of the toner particles, a ratio [ST3] of peak area of the partial structure represented by the formula (T3) to total peak area of the organosilicon polymer satisfies a relationship expressed as: ST3≥0.05. A compound A is present between the core particle and the coating layer, the compound A being a specific compound having a hydrophilic portion and a hydrophobic portion.SELECTED DRAWING: None
【課題】表面近傍にワックスの多いコア粒子に対しても密着性の高い有機ケイ素重合体を含む被覆層を有し、耐定着巻き付き性と現像耐久性、粒状感の少ない高品位な画像を長時間にわたって得られ、かつ外添剤ゴーストを抑制できるトナーを提供すること。【解決手段】結着樹脂とワックスを含有するコア粒子と、該コア粒子を被覆している有機ケイ素重合体を含む被覆層を有するトナー粒子を有するトナーであって、該コア粒子は、示差走査熱量測定（ＤＳＣ）によるワックスに由来する吸熱ピークの吸熱量をＱｉ（Ｊ／ｇ）、該コア粒子のヘキサン処理後のＤＳＣによるワックスに由来する吸熱ピークの吸熱量をＱｈ（Ｊ／ｇ）としたとき、以下の関係式を満たし、０．７≦Ｑｉ－Ｑｈ≦２０．０該有機ケイ素重合体は、下記式（Ｔ３）で表される部分構造を有し、前記トナー粒子のテトラヒドロフラン不溶分の29Ｓｉ－ＮＭＲの測定において、有機ケイ素重合体の全ピーク面積に対する、下記式（Ｔ３）で表される部分構造のピーク面積の割合［ＳＴ３］が、ＳＴ３≧０．０５の関係を満たし、Ｒ－Ｓｉ（Ｏ1/2）3（Ｔ３）（式（Ｔ３）中、Ｒは炭素数１以上６以下のアルキル基又はフェニル基を表す。）該コア粒子と被覆層との間に化合物Ａが存在しており、該化合物Ａが、親水部と疎水部とをもつ特定の化合物であることを特徴とする。【選択図】なし</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | CINEMATOGRAPHY ELECTROGRAPHY ELECTROPHOTOGRAPHY HOLOGRAPHY MAGNETOGRAPHY PHOTOGRAPHY PHYSICS |
| title | TONER AND MANUFACTURING METHOD THEREFOR |
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