JPH01159648U

JPH01159648U -

Info

Publication number: JPH01159648U
Application number: JP5590188U
Authority: JP
Priority date: 1988-04-27
Filing date: 1988-04-27
Publication date: 1989-11-06

Description

[Brief explanation of the drawing]

第１図は、本考案に従うシート部材検知機構の
一具体例が適用された静電複写機の一部を簡略的
に示す断面図。第２図は、第１図のシート部材検
知機構及びその近傍を拡大して示す部分斜視図。
第３図は、第１図のシート部材検知機構の従動コ
ロを示す側面図。第４−Ａ図及び第４−Ｂ図は、
夫々、従動コロがパルス非発生状態にあるときの
状態及びパルス発生状態にあるときの状態を一部
拡大して示す断面図。２……複写紙再送手段、４……受部材、６……
送給ローラ、４０……シート部材検知機構、４２
……従動コロ、４４……光学的検出手段、４８…
…揺動部材、５４……角度位置保持手段。 FIG. 1 is a sectional view schematically showing a part of an electrostatic copying machine to which a specific example of a sheet member detection mechanism according to the present invention is applied. FIG. 2 is a partial perspective view showing the sheet member detection mechanism shown in FIG. 1 and its vicinity in an enlarged manner.
3 is a side view showing a driven roller of the sheet member detection mechanism of FIG. 1; FIG. Figures 4-A and 4-B are
FIG. 3 is a partially enlarged cross-sectional view showing a state when the driven roller is in a non-pulse generating state and a state when the driven roller is in a pulse generating state, respectively. 2... Copy paper refeeding means, 4... Receiving member, 6...
Feeding roller, 40...Sheet member detection mechanism, 42
... Driven roller, 44 ... Optical detection means, 48 ...
... Swinging member, 54 ... Angular position holding means.

Claims

[Claims for Utility Model Registration] 1. A rocking member that is swingably disposed above a receiving member that receives sheet members in a stacked state, and a rocking member that is rotatably attached to the rocking member and that is attached to the receiving member. In a sheet member detection mechanism comprising a driven roller driven by a sheet member moving along a receiving surface and an optical detection means consisting of a combination of a light emitting element and a light receiving element, the receiving member has the driven roller. A recessed portion is provided corresponding to the receiving member, and when the sheet member is not present on the receiving member, a portion of the driven roller is recessed into the recessed portion, whereby the driven roller and the optical detection means are are held in a positional relationship that does not generate a pulse signal, and on the other hand, when the sheet member is received on the receiving member, the driven roller escapes from the recessed portion by the action of the sheet member, thereby causing the driven roller and the A sheet member detection mechanism characterized in that the optical detection means is held in a positional relationship that generates a pulse signal. 2. The sheet member detection mechanism according to claim 1, wherein the driven roller is provided with angular position holding means comprising a ratchet wheel that rotates together with the driven roller and an elastic engagement member that engages with the ratchet wheel. .