Printing assembly with continuous stock cutter and sheet feeder for feeding cut sheets to printer

• US 6,039,479 A
• Filed: 08/11/1998
• Issued: 03/21/2000
• Est. Priority Date: 08/29/1995
• Status: Expired due to Fees

• Current Assignee: Dynetics Engineering Corporation Incorporated
• Original Assignee: Dynetics Engineering Corporation Incorporated
• Inventors: Hill, Jeffery L., Hill, Gregory S.
• Primary Examiner(s): Hilten, John
• Assistant Examiner(s): COLILLA, DANIEL JAMES
• Application Number:
  US09/132,219
• Time in Patent Office: 588 Days
• Field of Search: 400/605, 400/607, 400/621, 400/624, 400/625, 400/611, 400/618, 271/3.01, 271/226, 271/145, 271/161, 271/165, 271/166, 399/384, 399/385
• US Class Current: 400/621
• CPC Class Codes: B41J 11/58 Supply holders for sheets or fan-folded webs, e.g. shelves, tables, scrolls, pile holders
• CPC Class Codes: B41J 11/70 cutting perpendicular to the direction of paper feed
• CPC Class Codes: B43M 3/045 for envelopes with only one flap

Abstract

A printing assembly (10) having a printer (30) and a single sheet transport mechanism (22) for automatically transporting discrete sheets seriatim from within a tray held in a tray receptacle (32) to the printer and a discrete sheet load enhancement apparatus with a holder (24) of an auxiliary supply of printable stock (18), a removable open tray (20) with a feed opening (40) accessible for receipt of discrete sheets (14) of printable stock fed within the feed opening while releasably mounted within the tray receptacle and a continuous discrete sheet feeder and producer (16) for automatically feeding the sheets (14) seriatim from the separate supply of printable stock (18) through the feed opening (40) into the removable open tray (20).

Claims

1. In a printing assembly having a discrete sheet printer with a discrete sheet supply tray and means for automatically transporting a discrete sheet from the supply tray to the printer for printing, the improvement being a continuous discrete sheet supply enhancement apparatus, comprising:

an open tray for receipt through space of at least one discrete sheet;

means for cutting a supply of continuous stock into discrete sheets;

means for transferring a free end of the continuous stock to the cutting means at a feed-in speed; and

means for ejecting a discrete sheet cut from the free end of the continuous stock away from the cutting means with a falling trajectory, through space, that moves the discrete sheets into the open tray for operative engagement with the discrete sheet transporting means of the printer,

said ejecting means including means for ejecting the discrete sheets into space at a feed-out speed greater than the feed-in speed, and

said feed-out speed being sufficiently greater than the feed-in speed to create a gap through space between successive discrete sheets, said gap being of sufficient gap width to enable each discrete sheet to fall sufficiently in its falling trajectory before a next successive sheet is ejected to avoid collision between successively ejected discrete sheets.

2. The printing assembly of claim 1 in which said ejecting means includes

a cylindrical roller with a plurality of elongate grooves engageable with back edges of discrete sheets to push the back edges during ejection of the discrete sheets, and

means for rotating the cylindrical roller at the feed-out speed to push the discrete sheets through space and into the open tray.

3. The printing assembly of claim 1 in which said transporting means and said transferring means respectively include first and second rollers engageable with the stock and means for driving the rollers to rotate at said feed-in and said feed-out speeds, respectively.

4. The printing assembly of claim 1 in which

said open tray has an end with a feed opening for substantially horizontal receipt of the discrete sheets from said ejecting means, and

a discrete sheet support surface located beneath a level at which the discrete sheets are ejected by the ejecting means.

5. The printing assembly of claim 1 in which at least one of said ejecting means includes

a pair of rollers with a gap for receipt of said stock, and

means for adjusting the gap including an eccentric axle member to which at least one of the rollers is mounted for eccentric rotation.