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Optical information code reading method

An optical information code and information recording technology, applied in the field of optical information code reading, can solve the problems of low reading accuracy, the QR code scanner cannot determine the two-dimensional code image, the barcode image cannot be determined, etc., to improve reading The effect of accuracy

Inactive Publication Date: 2016-12-14
RICOH KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is a problem that in the case where the difference between the reflected lights is small, that is, in the case where the barcode image has low contrast, the barcode scanner cannot determine the barcode image, resulting in low reading accuracy
[0011] In addition, in the case of the two-dimensional code image, similar to the case of the bar code image, there is a problem that, in the case where the two-dimensional code image has low contrast, the QR code scanner cannot determine the two-dimensional code image, resulting in low reading accuracy sex

Method used

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  • Optical information code reading method
  • Optical information code reading method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0195]

[0196] A thermoreversible recording medium that reversibly changes color tone by the action of heat is produced as follows.

[0197] -Support-

[0198] A white polyester film (TETRON (registered trademark) film U2L98W, manufactured by Teijin Dupont Co.) having an average thickness of 125 μm was prepared as the support.

[0199] -Formation of the first oxygen barrier layer-

[0200] Polyurethane adhesive (TM-567, manufactured by Toyo-Morton, Ltd.) (5 parts by mass), isocyanate (CAT-RT-37, manufactured by Toyo-Morton, Ltd.) (0.5 parts by mass), and ethyl acetate (5 parts by mass) were mixed together, followed by stirring sufficiently to prepare an oxygen barrier layer coating liquid.

[0201] Then, the prepared coating liquid for oxygen barrier layer was applied to a silica-evaporated PET film (TECHBARRIER HX, oxygen permeability: 0.5 mL / m 2 / day / MPa, manufactured by Mitsubishi Plastics Inc.), followed by heating and drying at 80° C. for 1 minute. This silica-evap...

Embodiment 2

[0222]

[0223] The thermoreversible recording medium of Production Example 2 was produced in the same manner as Production Example 1 except that the second oxygen barrier layer was not formed.

Embodiment 3

[0225]

[0226] A thermoreversible recording medium in which the color tone of the thermoreversible recording medium is reversibly changed is produced.

[0227] -Support-

[0228] As the support, a white polyester film (Tetron (registered trademark) film U2L98W, manufactured by Teijin DuPont Films Japan Limited) having an average thickness of 125 μm was provided.

[0229] -Thermosensitive recording layer-

[0230] By means of a ball mill, 6 parts by mass of octadecylphosphonic acid as a developer, 16 parts by mass of 10% by mass polyvinyl alcohol acetoacetal (plyvinyl acetoacetal) solution (KS-1, produced by Sekisui Chemical Co., Ltd. .manufacturing), 12 parts by mass of toluene, and 3 parts by mass of methyl ethyl ketone were ground and dispersed until their average particle diameter was about 0.3 μm. To the resulting dispersion, 1.5 parts by mass of 2-aniline-3-methyl-6-diethylaminofluorene as a leuco dye, and 0.37 parts by mass of 1.85% by mass of LaB 6 A dispersion li...

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PUM

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Abstract

An optical information code reading method, including reading an optical information code image by an optical information code scanner immediately after the optical information code image has been recorded onto an information recording medium, wherein the optical information code scanner includes an amplitude tuning unit configured to correct a detected amplitude level of reflectivity from the information recording medium on which the optical information code image has been recorded and to store the corrected detected amplitude level, and wherein the optical information code scanner reads the optical information code image in a state in which the optical information code scanner has read the information recording medium on which the optical information code image has been recorded, and the amplitude tuning unit has determined and stored a detected amplitude level optimum for reading.

Description

technical field [0001] The invention relates to an optical information code reading method. Background technique [0002] Generally, image recording and image erasing on an information recording medium such as a thermoreversible recording medium have been performed using a contact image recording method in which a heat source is brought into contact with the thermoreversible recording medium to heat the thermoreversible recording medium. The heat source used is usually a thermal head (thermal head) for image recording and a thermal roller or ceramic heater for image erasing. In this contact image recording method, when the thermoreversible recording medium is a flexible thermoreversible recording medium such as film or paper, a heat source is uniformly pressed against the thermoreversible recording medium using a platen, Thereby, uniform image recording and image erasing can be performed. In addition, components of commonly used printers for thermal paper can also be used ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K7/10G06K1/12G06K19/06
CPCG06K7/10831G06K7/10841G06K1/126G06K5/00G06K7/1417G06K7/12G06K17/0022G06K19/06037
Inventor 石见知三大井克也川原真哉浅井敏明
Owner RICOH KK