JPS62128044U

JPS62128044U -

Info

Publication number: JPS62128044U
Application number: JP1385286U
Authority: JP
Priority date: 1986-01-31
Filing date: 1986-01-31
Publication date: 1987-08-13

Description

[Brief explanation of drawings]

図面は本考案の実施例を示し、第１図は本考案
を適用した原稿送り装置の概略縦断正面図、第２
図は給紙装置の要部の縦断面図、第３図は給紙ロ
ーラならびに排紙装置とそれらの伝動機構の斜視
図、第４図は給紙状態を示す排紙装置の部分図、
第５図及び第６図は夫々原稿等の通過間隙の形成
状態を示す説明図である。第７図は伝動機構の形
態図、第８図は第７図のＺ―Ｏ―Ｚ線での断面図
、第９〜第１１図は排紙装置ならびに給紙ローラ
による給紙の説明図、第１２〜１５図はフイード
クラツチの動作説明図、第１６図イ〜ハは夫々上
ローラ９に設ける通紙部の別実施例を示す説明図
である。８……給紙ローラ、９……上ローラ、９ａ……
通紙部、１０……下ローラ、１１……排紙装置、
１２，１３……レジストローラ、１４，２０……
アーム、１７……用紙通過間隙、１８，１９……
軸、２０，２１……給紙ローラ支持用部材、３２
……戻り止めローラ、ｄ……一方向クラツチ、ｌ
……軸間寸法、ｒ_１，ｒ_２……ローラ半径、Ｂ…
…用紙（原稿）。 The drawings show an embodiment of the present invention, and FIG. 1 is a schematic longitudinal sectional front view of a document feeder to which the present invention is applied, and FIG.
3 is a perspective view of a paper feed roller, a paper ejection device and their transmission mechanism, and FIG. 4 is a partial view of the paper ejection device showing the paper feeding state.
FIGS. 5 and 6 are explanatory views showing the formation of the passage gap for documents, etc., respectively. FIG. 7 is a configuration diagram of the transmission mechanism, FIG. 8 is a sectional view taken along the Z-O-Z line in FIG. 12 to 15 are explanatory views of the operation of the feed clutch, and FIGS. 16A to 16C are explanatory views showing other embodiments of the paper passing section provided on the upper roller 9, respectively. 8...Paper feed roller, 9...Upper roller, 9a...
Paper passing section, 10... lower roller, 11... paper ejection device,
12, 13... Registration roller, 14, 20...
Arm, 17... Paper passing gap, 18, 19...
Shaft, 20, 21...Paper feed roller support member, 32
...Detent roller, d...One-way clutch, l
...Dimension between shafts, r ₁ , r ₂ ...Roller radius, B...
...Paper (manuscript).

Claims

[Scope of utility model registration request]

A pair of upper and lower shafts that rotate in the same direction are provided with an upper roller for paper feeding and a lower roller for returning paper alternately, and the dimension between the upper and lower shafts is slightly smaller than the sum of the radii of both rollers. A conveyance device is configured by forming a paper passing portion on the circumferential surface of the upper roller that forms a paper passage gap when viewed in the direction of the roller axis, and a paper feeding roller that can be freely switched to a paper feeding release state, In addition to being placed between a pair of registration rollers,
In a paper feeding device of an image recording apparatus configured to make a paper passing gap by the upper roller appear when paper is fed by the registration roller and to switch the paper feeding roller to a paper feeding release state, a paper feeding roller supporting member is provided. , an arm is pivotally connected to the paper feed roller axis or an axis parallel thereto, and is attached to the free end side of the arm via a one-way clutch that allows movement of the paper in the paper feed direction. A paper feeding device for an image recording apparatus, characterized in that a detent roller is pivotally mounted.