JPH0364969U - - Google Patents

Description

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

第１図は本考案に係る排紙トレイの断面図、第
２図は記録紙が排紙されトレイ底板可動部の傾斜
角度が変化した状態を示す断面図、第３図は第１
図に対応する図で記録紙の状態とトレイ底板可動
部の変化状態とを示す断面図、第４図は本考案に
係る排紙トレイの原理図、第５図はトレイ底板の
固定部と可動部の角度が１８０度以上の場合を説
明する原理図でＡ，Ｂ，Ｃは夫々記録紙の異なつ
た載置状態を示す図、第６図は記録紙の自重の作
用状態を示す原理図でＡは全体図、Ｂは記録紙の
湾曲移行部の部分図、第７図は従来の傾動式トレ
イ底板を示す断面図、第８図は従来の上下動式ト
レイ底板を示す断面図でＡは無負荷時、Ｂは記録
紙載置時を示す図、第９図は固定トレイ底板を有
する排紙トレイの断面図、第１０図は第９図に示
す排紙トレイの斜視図、第１１図はレーザプリン
タの全体説明図である。 ４……記録紙、１２……排紙ローラ、１３……
排紙トレイ、１６……トレイ底板、１７……トレ
イ底板固定部、１８……支点、１９……トレイ底
板可動部、２０……ばね。 Fig. 1 is a sectional view of the paper ejection tray according to the present invention, Fig. 2 is a sectional view showing the state where the recording paper is ejected and the inclination angle of the movable part of the tray bottom plate has changed, and Fig. 3 is the sectional view of the paper ejection tray according to the present invention.
The figures corresponding to the figures are cross-sectional views showing the state of the recording paper and the changing states of the movable part of the tray bottom plate, Fig. 4 is a principle diagram of the paper ejection tray according to the present invention, and Fig. 5 is the fixed part of the tray bottom plate and the movable part. A, B, and C are diagrams showing the different mounting states of the recording paper, respectively, and Figure 6 is a diagram showing the principle of action of the recording paper's own weight. A is an overall view, B is a partial view of the curved transition part of the recording paper, FIG. 7 is a cross-sectional view showing a conventional tilting tray bottom plate, and FIG. 8 is a cross-sectional view showing a conventional vertically movable tray bottom plate. When no load is applied, B is a diagram showing when recording paper is placed, FIG. 9 is a sectional view of a paper output tray having a fixed tray bottom plate, FIG. 10 is a perspective view of the paper output tray shown in FIG. 9, and FIG. 11 is an overall explanatory diagram of a laser printer. 4... Recording paper, 12... Paper ejection roller, 13...
Paper discharge tray, 16...tray bottom plate, 17...tray bottom plate fixing part, 18... fulcrum, 19... tray bottom plate movable part, 20... spring.

Claims (1)

【実用新案登録請求の範囲】 画像形成装置の排紙ローラにより排出される記
録紙を載せるトレイ底板を上下傾動可能に支持す
る排紙トレイにおいて、 トレイ底板が、排紙トレイに固定形成されたト
レイ底板固定部と、該トレイ底板固定部に対し上
下傾動可能に支持されるトレイ底板可動部とより
なり、該トレイ底板可動部が前記トレイ底板固定
部より前記排紙ローラ側に配置されていることと
、前記トレイ底板可動部を押し上げるばねを有し
、前記トレイ底板可動部の長さが、はがき封筒等
の特別サイズの紙を除く普通の最小使用サイズの
記録紙の排紙方向の長さより短く形成されている
ことを特徴とする画像形成装置の排紙トレイ。[Scope of Claim for Utility Model Registration] A paper output tray that supports a bottom plate of a tray on which recording paper is discharged by a paper discharge roller of an image forming apparatus in a vertically tiltable manner, wherein the tray bottom plate is fixedly formed on the paper output tray. The tray bottom plate is composed of a bottom plate fixing part and a tray bottom plate movable part supported to be tiltable up and down with respect to the tray bottom plate fixing part, and the tray bottom plate movable part is arranged closer to the paper ejection roller than the tray bottom plate fixing part. and a spring that pushes up the movable section of the tray bottom plate, and the length of the movable section of the tray bottom plate is shorter than the length in the paper ejection direction of ordinary minimum size recording paper excluding special size paper such as postcard envelopes. A paper output tray of an image forming apparatus, characterized in that: