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Image erasing apparatus and image erasing method

An image and laser technology, applied in the direction of inking device, temperature recording method, printing, etc., can solve the problems such as difficult to erase evenly

Inactive Publication Date: 2014-08-06
RICOH KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, in Patent Document 1, the energy density of the laser light irradiated on the thermoreversible recording medium varies due to the variation of the incident angle of the laser beam on the thermoreversible recording medium of the linear laser, so that it is difficult to uniformly erase the image on media

Method used

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  • Image erasing apparatus and image erasing method
  • Image erasing apparatus and image erasing method
  • Image erasing apparatus and image erasing method

Examples

Experimental program
Comparison scheme
Effect test

preparation Embodiment 1

[0313] Preparation of thermoreversible recording media

[0314] A thermoreversible recording medium in which the color tone changes reversibly due to heat is produced as follows.

[0315] carrier

[0316] As the support, a white turbid polyester film (TETORON FILMU2L98W, manufactured by Teijin DuPont Films Japan Limited) having a thickness of 125 μm was used.

[0317] Formation of the first oxygen barrier layer

[0318] Add 5 parts by weight of an adhesive based on urethane (TM-567, manufactured by Toyo-Morton, Ltd.), 0.5 parts by weight of isocyanate (CAT-RT-37, manufactured by Toyo Morton, Ltd.) and 5 parts by weight ethyl acetate, and stir well to prepare an oxygen barrier layer coating solution.

[0319] Secondly, on a PET film (TECHBARRIER HX, manufactured by Mitsubishi Plastics) of deposited silica, oxygen permeability: 0.5ml / m 2 / day / MPa), the oxygen barrier layer coating solution was coated using a wire bar, and heated and dried at 80° C. for 1 minute. A silica-de...

preparation Embodiment 2

[0343] Preparation of thermoreversible recording media

Embodiment 1

[0346] In Example 1, for the solid image (solid image) recorded on the thermoreversible recording medium of Preparation Example 2, using Figure 4A and 4B The linear beam of the image erasing device (erasing device using LD array) of the present invention shown, while changing the beam width around the center position in the scanning direction, the erasing energy and erasing width were measured as follows. The results are shown in Table 1.

[0347] Regarding the image recording method, image recording is performed with an LD marking device in which laser light is irradiated from BMU25-975-10-R (center wavelength: 976 nm), which is a fiber-coupled LD (semiconductor laser ), and when being focused by a field lens system (formed by two fixed lenses and a moving lens, adjusted its position at an angle to the galvanometer scanner to collect between the same working cells at a distance, without The laser light is scanned by a galvanometer scanner 6230H (manufactured by Cambridge) ...

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Abstract

A method for uniformly erasing an image recorded on a thermo-reversible recording medium. The image erasing apparatus includes an LD array, which emits a laser light whose cross section has a line shape; optics which include at least one cylindrical lens which converts, into a converging light which converges in a width direction, a line-shaped laser light which is emitted from the LD array and emits the converging light; and a mono-axial galvano mirror which deflects the laser light emitted from the optics in the width direction to scan the deflected laser light onto the thermo-reversible recording medium.

Description

technical field [0001] The present invention relates to an image erasing device and an image erasing method, which scan a laser light on a thermoreversible recording medium to erase an image recorded on the thermoreversible recording medium. Background technique [0002] In the related art, there is known an image erasing device that deflects a laser beam whose cross-section is linear in the width direction so that the deflected laser beam scans a thermally reversible recording medium to erase images recorded on the thermally reversible recording medium. on the image (for example, see Patent Document 1). [0003] However, in Patent Document 1, the energy density of the laser light irradiated on the thermoreversible recording medium varies due to the variation of the incident angle of the laser beam on the thermoreversible recording medium of the linear laser, so that it is difficult to uniformly erase the image on the medium. Contents of the invention [0004] means of s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41J2/32B41M5/28B41M5/30B41M5/46
CPCB41J2/315B41J2/32B41M7/0009B41J2202/37B41J2/4753B41J2/47
Inventor 石见知三川原真哉浅井敏明堀田吉彦
Owner RICOH KK
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