JPH0366939U

JPH0366939U -

Info

Publication number: JPH0366939U
Application number: JP12897689U
Authority: JP
Priority date: 1989-11-01
Filing date: 1989-11-01
Publication date: 1991-06-28

Description

[Brief explanation of drawings]

第１図は、この考案の構成図である。第２図は
この考案の実施例である用紙サイズ検出装置を適
用した複写機における、用紙サイズの検出動作の
フローチヤートである。第３図は、同複写機の制
御部の一部のブロツク図である。第４図は、同用
紙サイズ検出装置の動作の概略を示す図である。
第５図は、同複写機の概略構成図である。４１……受像シート、４２……手差し給紙台、
４３……タイミングローラ、４４……給送ローラ
、４８……ペーパガイド、Ｓ１……マイクロスイ
ツチ（用紙有無検出手段）、Ｓ２，Ｓ３……マイ
クロスイツチ（用紙幅検出手段）。 FIG. 1 is a block diagram of this invention. FIG. 2 is a flowchart of a paper size detection operation in a copying machine to which a paper size detection device according to an embodiment of the present invention is applied. FIG. 3 is a block diagram of a portion of the control section of the copying machine. FIG. 4 is a diagram schematically showing the operation of the paper size detection device.
FIG. 5 is a schematic diagram of the copying machine. 41...Image receiving sheet, 42...Manual paper feed tray,
43...Timing roller, 44...Feeding roller, 48...Paper guide, S1...Micro switch (paper presence/absence detection means), S2, S3...Micro switch (paper width detection means).

Claims

[Scope of Claim for Utility Model Registration] A paper feed table for setting paper by bringing it into contact with a feed roller; a pair of upper and lower rollers for feeding the paper fed by the feed roller to a developing section;
In the feeding device, the feeding device includes paper guides above and below a paper transport path between the feeding roller and the pair of upper and lower rollers, and a paper width detecting means up to the pair of upper and lower rollers of the paper transport path, A paper presence/absence detecting means is provided immediately before the feeding roller, and a feeding means rotates only the feeding roller for a predetermined period of time after the paper reaches the pair of upper and lower rollers, and the paper presence/absence detection means is provided after the paper is fed by the feeding means. A paper size detecting device comprising: a determining means for determining the size of a paper based on a detection result of the means and a detection result of the paper width detecting means.