IMAGE READING DEVICE AND IMAGE FORMING APPARATUS
To improve reading accuracy.SOLUTION: A reading unit 700a has: a CIS 702 that reads an image of a sheet conveyed in a conveyance direction, and has a heat radiation surface 702c; an axial flow fan 707 that sends air; a CIS holder 704 that is provided between the CIS 702 and the axial flow fan 707, a...
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| Zusammenfassung: | To improve reading accuracy.SOLUTION: A reading unit 700a has: a CIS 702 that reads an image of a sheet conveyed in a conveyance direction, and has a heat radiation surface 702c; an axial flow fan 707 that sends air; a CIS holder 704 that is provided between the CIS 702 and the axial flow fan 707, and supports the CIS 702; a housing 703 that accommodates the CIS 702, axial flow fan 707, and CIS holder 704, and has an opening which is opened in a side where the sheet is conveyed; and a conveyance guide member 701 that is provided in the opening. The CIS 702 has the heat radiation surface 702c facing the CIS holder 704, and is arranged to form a channel with the CIS holder 704. The CIS holder 704 has a vent hole 704a at a portion facing the heat radiation surface 702c. The axial flow fan 707 is arranged to face the vent hole 704a.SELECTED DRAWING: Figure 4
【課題】読取精度を向上する。【解決手段】読取ユニット７００ａは、搬送方向に搬送されるシートの画像を読み取り、かつ、放熱面７０２ｃを有するＣＩＳ７０２と、空気を送風する軸流ファン７０７と、ＣＩＳ７０２と軸流ファン７０７との間に設けられ、ＣＩＳ７０２を支持するＣＩＳホルダ７０４と、ＣＩＳ７０２と、軸流ファン７０７と、ＣＩＳホルダ７０４とを収容し、シートが搬送される側に開口した開口部を有する筐体７０３と、開口部に設けられた搬送ガイド部材７０１と、を有する。ＣＩＳ７０２は、放熱面７０２ｃをＣＩＳホルダ７０４に対向させ、かつ、ＣＩＳホルダ７０４との間で流路を形成して配置され、ＣＩＳホルダ７０４は、放熱面７０２ｃに対向する部位に通気口７０４ａを有し、軸流ファン７０７は、通気口７０４ａに対向して配置される。【選択図】図４ |
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