JPH047538U

JPH047538U -

Info

Publication number: JPH047538U
Application number: JP4704890U
Authority: JP
Priority date: 1990-05-02
Filing date: 1990-05-02
Publication date: 1992-01-23
Anticipated expiration: 2005-05-02
Also published as: JP2542803Y2

Description

[Brief explanation of drawings]

第１図〜第４図は本考案に係る原稿自動送給装
置の一実施例を示す図であり、第１図はその要部
構成図、第２図は第１図における下側原稿ガイド
板の斜視図、第３，４図は原稿先端が給紙コロと
分離コロのニツプ部に挟み込んでセツトされた状
態を示す図である。第５図〜第８図は従来の原稿
自動送給装置を示す図であり、第５図はその要部
構成図、第６図は第５図における分離コロと砥石
ストツパの構成図、第７図は原稿の初期セツト状
態を示す図、第８図は原稿先端がピツクアツプコ
ロと給紙コロによつて搬送される状態を示す図あ
る。３……ピツクアツプコロ、４……加圧板、５…
…給紙コロ（フイードコロ）、６……分離コロ、
８……原稿テーブル、１０……ジヤンプ台、２１
……原稿自動送給装置、２２……下側ガイド板、
２２ａ……搬送面、２２ｂ……突出穴、２３ａ，
ｂ……レール（調整部材）、２４……原稿。 1 to 4 are diagrams showing an embodiment of the automatic document feeder according to the present invention, FIG. 1 is a configuration diagram of its main parts, and FIG. 2 is a lower document guide plate in FIG. 1. FIGS. 3 and 4 are perspective views showing a state in which the leading edge of the document is sandwiched between the nip portions of the paper feed roller and the separation roller. 5 to 8 are diagrams showing a conventional automatic document feeder, in which FIG. 5 is a configuration diagram of its main parts, FIG. 6 is a configuration diagram of the separation roller and grindstone stopper in FIG. 5, and FIG. This figure shows the initial set state of the original, and FIG. 8 shows the state where the leading edge of the original is conveyed by the pick-up roller and the paper feed roller. 3... Pick up roller, 4... Pressure plate, 5...
...Paper feeding roller (feed roller), 6...Separation roller,
8... Original table, 10... Jump table, 21
... Automatic document feeder, 22 ... Lower guide plate,
22a...Conveyance surface, 22b...Protrusion hole, 23a,
b...Rail (adjustment member), 24...Manuscript.

Claims

[Scope of Claim for Utility Model Registration] A pick-up roller that comes into contact with the lowest surface of the placed document and feeds out the lowest document; a pressure plate that comes into contact with the top surface of the placed document and presses the document against the pick-up roller; A feed roller that is rotatably driven and conveys the document sent out by the pick-up roller, a separation roller that comes into contact with the feed roller and separates the document sent out by the pick-up roller one by one, and a separation roller that extends in the conveying direction of each roller and separates the document from the document sent out by the pick-up roller. a document guide plate forming a conveyance surface on which the document is placed and conveyed; the pick up roller and the feed roller are disposed below the document guide plate; and the lowermost surface of the document placed on the conveyance surface. A protruding hole from which each roller protrudes is formed in the upper document guide plate so that the rollers come into contact with each other, and the height difference between the feeding roller and the conveying surface caused by the protrusion of the feed roller from the protruding hole allows the leading edge of the lowest document to be moved between the separation rollers. An automatic document feeder that guides documents to a nip portion of a feed roller, characterized in that an adjustment member is provided near the nip portion on the document guide plate to reduce a height difference between the feed roller and the conveying surface due to the protrusion of the feed roller. Automatic document feeder.