US5602378A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detection by a scanner of radiation from the scanner reflected from a bar code
Assignee: Individual
•
Filing: 1995-03-24
•
Granted: 1997-02-11
•
Expires: 2015-03-24
Abstract
Abstract The invention relates to a method for the detection of imprint markings (6) made into an object, especially for reading a bar code, the markings (6, 6a) of which are formed into a second level (8) which differs from the surface level (4) of the object, the second level (8) being arranged to reflect a radiation (5) to at least some extent. The method utilizes apparatus which transmit (1) and receive (2) a radiation, the apparatus being separated from each other by a separating wall (3) which is arranged transversely with respect to the surface plane of the object and near the surface (4), the wall preventing radiation from passing from the transmitting (1) to the receiving apparatus (2) at such locations where the surface (4), which is at a higher lever, extends to an edge (7) of the separating wall (3). The invention also relates to a reader head device for reading imprint markings (6) made into the surface of an object, wherein an edge (7) of a separating wall (3) extends beyond the transmitting and/or receiving apparatus (1, 2) essentially to the higher located surface (4) of the object. The invention further relates to the use of the method and device for reading a bar code.
Inventors
- 👤 Harri O. Vaarala
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:53
CPC Classifications
G; G06; G06K; G06K7/00; G06K7/10; G06K7/10544; G06K7/10821; G06K7/10861; G06K19/00; G06K19/06; G06K19/06009; G06K19/06018; G06K19/06028; G06K2019/06215; G06K2019/06271
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
202 words
A method for detecting imprinted markings (6, 6a) made into an object, especially a bar code comprising, said markings (6, 6a) being formed to at least one second level (8) which differs from a first level (4) representing the base surface level of said object, wherein the surface of at least that level (4 or 8) which is lower, is arranged to provide reflection of a radiation (5) at least to some extent, said method utilizing radiation transmitting (1) and, correspondingly, receiving (2) means located apart from said transmitting means, characterized in that said radiation transmitting (1) and receiving (2) means are separated from each other by a separating wall (3) which is arranged essentially transversely with respect to the surface of said object and having an edge (7) extending from the surface level of said transmitting and/or receiving means (1, 2) in close relationship with the surface (4) of said object, said separating wall (3) preventing the passage of said radiation (5) from said transmitting means (1) to said receiving means (2) at such locations of said object, where the surface (4) which is positioned at a higher level will extend essentially to said edge (7) of said separating wall (3).
Claim 2
Independent Claim
202 words
A method for detecting imprinted markings (6, 6a) made into an object, especially a bar code comprising, said markings (6, 6a) being formed to at least one second level (8) which differs from a first level (4) representing the base surface level of said object, wherein the surface of at least that level (4 or 8) which is lower, is arranged to provide reflection of a radiation (5) at least to some extent, said method utilizing radiation transmitting (1) and, correspondingly, receiving (2) means located apart from said transmitting means, characterized in that said radiation transmitting (1) and receiving (2) means are separated from each other by a separating wall (3) which is arranged essentially transversely with respect to the surface of said object and having an edge (7) extending from the surface level of said transmitting and/or receiving means (1, 2) in close relationship with the surface (4) of said object, said separating wall (3) preventing the passage of said radiation (5) from said transmitting means (1) to said receiving means (2) at such locations of said object, where the surface (4) which is positioned at a higher level will extend essentially to said edge (7) of said separating wall (3).
Claim 3
Dependent Claim
82 words
A method according to claim 1, characterized in that said receiving means (2) are connected to filtering and/or processing means which define an outgoing signal only based on such signals from said receiving means which correspond to the signal level at such locations where said radiation (5) passes through an essential slit (9) between said edge (7) of said separating wall (3) and a depressed lower level (8) which is located lower farther away from said transmitting and/or receiving means (1, 2).
Claim 4
Dependent Claim
34 words
The use of a method according to claim 1 for reading such a permanent bar code which is formed by pressing imprints (6, 6a) or embossments, respectively, into the surface (4) of an object.
Claim 5
Dependent Claim
129 words
A reader head device for reading imprint markings (6) made into the surface of an object, especially for reading a bar code, said device comprising means (1) for transmitting radiation (5) to be reflected via a surface (4) of said object to receiving means (2), wherein said transmitting and receiving means (1 and 2, respectively) are separated from each other by means located there between, characterized in that said means located between said transmitting (1) and said receiving (2) means comprise a separating wall (3) which is arranged in a plane which is essentially transversal to said surface (4) of said object, an edge (7) of said wall extending beyond said transmitting and/or receiving means (1, 2) essentially to that surface (4) of said object, which is higher up.
Claim 6
Dependent Claim
129 words
A reader head device for reading imprint markings (6) made into the surface of an object, especially for reading a bar code, said device comprising means (1) for transmitting radiation (5) to be reflected via a surface (4) of said object to receiving means (2), wherein said transmitting and receiving means (1 and 2, respectively) are separated from each other by means located there between, characterized in that said means located between said transmitting (1) and said receiving (2) means comprise a separating wall (3) which is arranged in a plane which is essentially transversal to said surface (4) of said object, an edge (7) of said wall extending beyond said transmitting and/or receiving means (1, 2) essentially to that surface (4) of said object, which is higher up.
Claim 7
Dependent Claim
68 words
A device according to claim 4, characterized in said transmitting and/or receiving means (1 and 2, respectively) being arranged at a distance from the level of said object and directed suitably at least to some extent at an inclined angle so that the radiation (5) sent by said transmitting means (1) is reflected via said object to corresponding receiving means (2) located apart from said transmitting means (1).
Claim 8
Dependent Claim
37 words
A device according to claim 4, characterized in that said separating wall (3) comprises a knife-like member, the lowermost portion (10) of said edge (7) of said separating wall (3) suitably comprising a coating which reduces reflection.
Claim 9
Dependent Claim
64 words
A device according to claim 3, characterized in said separating wall (3) being essentially sharp at its edge, preferably so that the thickness of said wall at the peak edge (7), which will be positioned against said surface (4), is not more than equal to a half, suitably to one fourth of the width of the narrowest imprint marking (6a) of a bar code.
Claim 10
Dependent Claim
42 words
A device according to claim 4, characterized in said reading head being constituted of several transmitters (1) and/or receivers (2) arranged in parallel, and, correspondingly, one common separating wall (3), or several walls with one wall arranged for each of the transmitters/receivers.
Claim 11
Dependent Claim
24 words
A device according to claim 4, characterized in each separating wall (3) being a tubular member surrounding said transmitter (1) and/or said receiver (2).
Claim 12
Dependent Claim
44 words
A device according to claim 4, characterized in said separating wall (3) comprising a mirror surface (11) at said edge (7) of said separating wall (3), at least at one of its sides, preferably at the side, which is positioned towards said transmitter (1).
Claim 13
Dependent Claim
34 words
The use of a device according to claim 4 for reading such a permanent bar code which is formed by pressing imprints (6, 6a) or embossments, respectively, into the surface (4) of an object.
References Cited (Backward Citations)
US1985035A
Cited
GB1111468A
Cited
DE1814536A1
Cited
US3939327A
Cited
US3947691A
Cited
GB1359254A
Cited
US3735094A
Cited
GB1470562A
Cited
US4020327A
Cited
US4101072A
Cited
US4983817A
Cited
US5118369A
Cited
EP0553046A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-02-11 | 2000-08-12 | 2001-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-02-11 | 2004-08-12 | 2005-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-02-11 | 2008-08-12 | 2009-02-11 | $7700.00 | Window Closed / Lapsed |