Sheet medium dispensing apparatus having a recess to permit buckling of a lowermost sheet

• US 5,393,045 A
• Filed: 09/30/1993
• Issued: 02/28/1995
• Est. Priority Date: 10/02/1992
• Status: Expired due to Fees

• Current Assignee: JUKI Corporation
• Original Assignee: JUKI Corporation
• Inventors: Fujimoto, Tadashi
• Primary Examiner(s): Olszewski, Robert P.
• Assistant Examiner(s): NOT, DEFINED
• Application Number:
  US08/130,000
• Time in Patent Office: 516 Days
• Field of Search: 271/110, 271/111, 271/119, 271/161, 271/165, 271/23, 271/19
• US Class Current: 271/23
• CPC Class Codes: B65H 1/06 for separation from bottom of pile
• CPC Class Codes: B65H 3/063 separating from the bottom of pile B65H3/0615, B65H3/0623 take precedence

Abstract

An apparatus for dispensing, one by one, a stack of media as stacked in a stacker table by friction rollers to separate and supply the media to the next work station. The friction rollers are rotated in such a manner that rotational force thereof is provided to overcome any frictional resistance generated between the media so that no slip is caused between the rollers to obtain a smooth medium without damage thereto.

Claims

1. A sheet medium dispensing apparatus for disposing of, one by one, a stack of media in the form of a lamina stacked on a stack table and for feeding said media downstream thereof, comprising

a stacker table for stacking a stack of said media thereon and having a recess formed in said table;

a dispenser roller disposed upstream of said recess and upwardly and slightly exposed out of the top of said stacker table;

a square rotator of polygonal cross section so located upstream of said dispenser roller as to have a corner of said rotator exposed out of the top of said stacker table;

a motor for driving said dispenser roller and said square rotator synchronously therewith;

a separator roller disposed downwardly of said recess and slightly exposed out of the top of said stacker table;

a further motor for driving said separator roller; and

sensor means within said recess for sensing to what extent said medium is curved to control timing of rotating operation of said motor for driving said dispenser roller 22 and said square rotator 28 and said motor for driving said separator roller 24 whereby the lowermost medium out of said media is introduced by said dispenser roller to said recess and is then fed from said media downwardly of said table.

2. A sheet medium dispensing apparatus as set forth in claim 1 wherein said apparatus includes delivery rollers and sensor means provided downwardly of the stack of media to control timing of rotation of said delivery rollers.