JPH03130583U

JPH03130583U -

Info

Publication number: JPH03130583U
Application number: JP4057490U
Authority: JP
Priority date: 1990-04-16
Filing date: 1990-04-16
Publication date: 1991-12-27

Description

[Brief explanation of drawings]

図面は本考案の一実施例を示すもので、第１図
は紙葉搬送路の一部を示す縦断側面図、第２図は
複写機の内部構造を示す側面図、第３図は紙葉の
搬送状態を示す側面図、第４図は紙葉搬送路を示
す斜視図、第５図は紙葉搬送路とフオトセンサと
の関係を示す分解斜視図、第６図は発光素子の出
力又は受光素子の感度の変化による検出領域の変
化を示す説明図、第７図は発光素子と受光素子と
の配置の変化による検出領域の変化を示す説明図
である。２７……紙葉搬送路、３２……フオトセンサ、
３３……発光素子、３４……受光素子、３７……
保護カバー。 The drawings show one embodiment of the present invention; FIG. 1 is a longitudinal side view showing a part of the paper sheet conveyance path, FIG. 2 is a side view showing the internal structure of the copying machine, and FIG. 4 is a perspective view showing the sheet conveyance path, FIG. 5 is an exploded perspective view showing the relationship between the sheet conveyance path and the photo sensor, and FIG. 6 is the output or light reception of the light emitting element. FIG. 7 is an explanatory diagram showing a change in the detection area due to a change in the sensitivity of the element. FIG. 7 is an explanatory diagram showing a change in the detection area due to a change in the arrangement of the light emitting element and the light receiving element. 27...Paper conveyance path, 32...Photo sensor,
33... Light emitting element, 34... Light receiving element, 37...
protective cover.

Claims

[Scope of utility model registration request]

a reflective photo sensor in which a light-emitting element and a light-receiving element are arranged adjacent to each other so as to face each other on one side of a sheet conveyance path;
A paper sheet detection device comprising a light-transmitting protective cover disposed in a non-detection area between the detection area of the photo sensor in the optical path length direction and the photo sensor.