Title:
【発明の名称】可変フォーマット用の紙カッタ
Document Type and Number:
Japanese Patent JP2000501999
Kind Code:
A
Abstract:
A method and apparatus is provided for selectively cutting sheets of paper of variable length from a paper supply having a continuous web moving from an upstream location to a downstream location through a pair of pinch rollers and along a predetermined path to a rotary cutter. A controller controls the rotation of the rotary cutter. First and second sensors sense the angular positions of the rotary cutter and pinch rollers, respectively, to provide respective input signals to the controller indicative thereof. A format selector, controlled by an operator, provides a third input signal to the controller indicative of the speed and format for cutting individual sheets from the web. The controller is responsive to the first, second and third signals so that the rotary cutter cuts the sheets to the desired length and the pinch rollers feed the web at a desired speed. Optical sensors sense the position of the end of the web and the position of indicia on the web and provide further input signals to the controller so that precise cuts can be made with respect to the position of the indicia for each cut sheet of paper. Alternatively, a sensor on a positive feed mechanism senses the position of the web. Substantially instantaneous corrections in the speed of the cutter rotary is made to compensate for variations in the diameter of the pinch roller and to make changes on the fly to initiate a new format in response to a signal from an optical recognition mark (ORM) on the web. A stop signal from the Z channel of the rotary cutter can be used to stop the rotary cutter so that sufficient angular distance remains to accelerate the rotary cutter to the desired speed for the next cut.
Inventors:
Patrick Washoe
Application Number:
JP52260696A
Publication Date:
February 22, 2000
Filing Date:
April 30, 1996
Export Citation:
Assignee:
Patrick Washoe
International Classes:
B23D36/00; B26D1/24; B26D1/62; B26D5/20; B26D5/32; B26D5/34; (IPC1-7): B26D5/32; B26D1/24; B26D1/62; B26D5/34
Attorney, Agent or Firm:
Toshio Yano (2 outside)