JPS647161U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は、本考案に係る用紙反転装置を実施し
た画像形成装置の構成例を示す概略断面図、第２
図は、その定着部及び反転排出部を示す断面図、
第３図は、反転排出部の拡大斜視図、第４図は、
波打ち現象の発生した排出用紙を示す斜視図、第
５図Ａ，Ｂは、反転ローラの不適切な配置例を示
す説明図である。 図において、１９は定着部、２０は反転排出部
、３３は第１反転ローラ、３４は第２反転ローラ
、３５は第３反転ローラ、３７は用紙反転案内部
、３８は紙突入板、３９はワイヤ紙受部、４０，
４１は除電ブラシを示す。 FIG. 1 is a schematic sectional view showing a configuration example of an image forming apparatus implementing a paper reversing device according to the present invention, and FIG.
The figure is a sectional view showing the fixing section and the reversal discharge section,
FIG. 3 is an enlarged perspective view of the reversing discharge section, and FIG. 4 is
FIGS. 5A and 5B, which are perspective views showing a discharged sheet with a waving phenomenon, are explanatory views showing examples of inappropriate arrangement of reversing rollers. In the figure, 19 is a fixing section, 20 is a reversing discharge section, 33 is a first reversing roller, 34 is a second reversing roller, 35 is a third reversing roller, 37 is a sheet reversing guide section, 38 is a paper entry plate, and 39 is a reversing roller. wire paper receiver, 40,
41 indicates a static elimination brush.

Claims (1)

【実用新案登録請求の範囲】 (1) 処理装置から排出される用紙を第１の方向
に搬送する第１のローラと第２のローラとからな
る第１のローラ対と、該第１のローラ対による第
１の搬送方向より第２の方向に用紙を案内する用
紙反転案内部と、該用紙反転案内部より反転して
くる用紙を第１のローラ対による搬送方向とほぼ
逆方向に搬送する第２のローラと第３のローラと
からなる第２のローラ対とを備えた用紙反転装置
において、前記用紙反転案内部を、前記第１のロ
ーラ対により搬送される用紙と当接する位置に配
置した板状の紙突入板と、該紙突入板の上端に固
着されたワイヤからなるワイヤ紙受部とで構成し
たことを特徴とする用紙反転装置。 (2) 前記用紙反転案内部は、垂直面に対して２
０〜３０度傾けて配置し、前記用紙反転案内部の
紙突入板に対する第１のローラ対による用紙搬送
方向のなす角度を３０〜５０度としたことを特徴
とする実用新案登録請求の範囲第１項記載の用紙
反転装置。[Claims for Utility Model Registration] (1) A first roller pair consisting of a first roller and a second roller that convey paper discharged from a processing device in a first direction, and the first roller a paper reversing guide unit that guides the paper from a first transport direction by the pair of rollers in a second direction; and a paper reversing guide unit that transports the paper reversed from the paper reversing guide unit in a direction substantially opposite to the transport direction of the first pair of rollers. In the paper reversing device including a second roller pair consisting of a second roller and a third roller, the paper reversing guide section is arranged at a position where it comes into contact with the paper conveyed by the first roller pair. 1. A paper reversing device comprising: a paper plunger plate in the form of a flat plate; and a wire paper receiver made of a wire fixed to the upper end of the paper plunger plate. (2) The paper reversing guide section is 2
The utility model is arranged at an angle of 0 to 30 degrees, and the angle formed by the paper conveyance direction by the first pair of rollers with respect to the paper entry plate of the paper reversing guide section is 30 to 50 degrees. The paper reversing device according to item 1.