Bar code reader

• US 5,231,275 A
• Filed: 03/16/1992
• Issued: 07/27/1993
• Est. Priority Date: 01/31/1990
• Status: Expired due to Fees

• Current Assignee: Nitsuko Corporation (NEC Corporation)
• Original Assignee: NEC Corporation, Nippon Electric Industry Company Limited
• Inventors: Ajiki, Hiroshi, Wakaumi, Hiroo
• Primary Examiner(s): EVANS, FANNIE L
• Application Number:
  US07/852,448
• Time in Patent Office: 498 Days
• Field of Search: 235/449, 235/450, 235/451, 235/493, 235/462, 324/207.21, 382/64
• US Class Current: 235/449
• CPC Class Codes: G06K 1/125 by magnetic means
• CPC Class Codes: G06K 19/02 characterised by the selection of materials, e.g. to avoid wear during transport through the machine
• CPC Class Codes: G06K 19/06187 with magnetically detectable marking
• CPC Class Codes: G06K 19/06196 Constructional details
• CPC Class Codes: G06K 19/14 the marking being sensed by radiation
• CPC Class Codes: G06K 2019/06271 Relief-type marking
• CPC Class Codes: G06K 7/087 flux-sensitive, e.g. magnetic, detectors G06K7/10336 takes precedence

Abstract

A bar code reader has a permanent magnet, an MR device formed integrally with the permanent magnet and a head frame housing the permanent magnet and MR device. The head frame comprises an open casing having a cut at the front end thereof. An internal lead wire faces the front end of the head frame and is fitted and fixed in the cut of the head frame. A printed circuit board on which the MR device is mounted is fixed in the opening of the head frame and electrically connected to the internal lead wire by means of a projection. An external lead wire is passed through the bottom of the head frame and spot-joined to the internal lead wire. The permanent magnet is supported at the bottom of the head frame and fixed in the head frame. A resin film is so formed as to cover the internal lead wire and fill the cut in the head frame and also to be flush at the surface thereof with the front end of the head frame.

Claims

1. A bar code reader having a permanent magnet and an MR device formed integrally with the permanent magnet, comprising:

a head frame housing said permanent magnet and MR device;

an internal lead wire, a resin film, an input wire of said MR device, and an external lead wire;

said head frame comprising an open casing having a cut at the front end thereof;

said internal lead wire facing the front end of said head frame and being fitted and fixed in said cut of the head frame;

a printed circuit board on which said MR device is mounted being fixed in the opening of said head frame and electrically connected to said internal lead wire by means of a projection;

said external lead wire being passed through the bottom of said head frame and spot-joined to said internal lead wire;

said permanent magnet being supported at the bottom of said head frame and fixed in said head frame; and

said resin film being so formed as to cover said internal lead wire and fill said cut in the head frame and also to be flush at the surface thereof with the front end of said head frame.