Recording method and recording device

Patent metadata

Field	Value
Publication number	US-10449782-B2
Application number	US-201816050098-A
Country	US
Kind code	B2
Filing date	Jul 31, 2018
Priority date	Feb 5, 2016
Publication date	Oct 22, 2019
Grant date	Oct 22, 2019

Abstract

Recording method including emitting laser light from optical fiber array to record image formed of writing units with moving recording target and the optical fiber array relatively using recording device including laser light-emitting elements and emitting unit including the optical fiber array where optical fibers for guiding laser light from the laser light-emitting elements are aligned wherein (A′D/A′C) that is ratio of length of diagonal line A′D to length of diagonal line A′C in the image formed in a manner that at least part of the writing units are overlapped one another in the main-scanning direction is 1.05 or greater.

First claim

What is claimed is:

1. A recording method comprising:
emitting laser light from an optical fiber array to record an image with moving a recording target and the optical fiber array relatively using a recording device, where the image is formed of writing units and the recording device includes a plurality of laser light-emitting elements and an emitting unit that includes the optical fiber array, in which a plurality of optical fibers configured to guide laser light emitted from the laser light-emitting elements are aligned,

wherein (A′D/A′C) that is a ratio of a length of a diagonal line A′D to a length of a diagonal line A′C in the image formed in a manner that at least part of the writing units are overlapped one another in a main-scanning direction is 1.05 or greater, where B is a length of ½ of a line width of the writing unit in the main-scanning direction, A is a center point of an edge of the writing unit in a sub-scanning direction, A′ is a position proceeded inside the writing unit from A by B, a line LL′ is drawn to include A′ and to be orthogonal to the writing unit, the length of the diagonal line A′C is a length between a line having A′ as a starting point and having an angle of 45° with the line LL′ and a cross point C of the line with the writing unit, and the length of the diagonal line A′D is a length between a line having A′ as a starting point and having an angle of 135° with the line LL′ and a cross point D of the line with the writing unit.

2. The recording method according to claim 1 ,
wherein (A′D/A′C) that is the ratio of the length of the diagonal line A′D to the length of the diagonal line A′C is 1.10 or greater.

3. The recording method according to claim 1 ,
wherein a minimum distance between centers of the optical fibers is 1.0 mm or less.

4. The recording method according to claim 1 ,
wherein the number of the optical fibers aligned in the optical fiber array is 10 or greater.

5. The recording method according to claim 1 ,
wherein the recording target is a thermosensitive recording medium, or a structure including a thermosensitive recording area, or both.

6. The recording method according to claim 1 ,
wherein the emitting laser light to the recording target to record an image is performed, while the recording target is conveyed by a recording target-conveying unit that is configured to convey the recording target.

7. A recording device comprising:
a plurality of laser light-emitting elements; and
an emitting unit including an optical fiber array, in which a plurality of optical fibers configured to guide laser light emitted from the laser light-emitting elements are aligned,
wherein the recording device is configured to apply laser light emitted from the optical fiber array with moving a recording target and the optical fiber array relatively, to record an image formed of writing units, and wherein (A′D/A′C) that is a ratio of a length of a diagonal line A′D to a length of a diagonal line A′C in the image formed in a manner that at least part of the writing units are overlapped one another in a main-scanning direction is 1.05 or greater, where B is a length of ½ of a line width of the writing unit in the main-scanning direction, A is a center point of an edge of the writing unit in a sub-scanning direction, A′ is a position proceeded inside the writing unit from A by B, a line LL′ is drawn to include A′ and to be orthogonal to the writing unit, the length of the diagonal line A′C is a length between a line having A′ as a starting point and having an angle of 45° with the line LL′ and a cross point C of the line with the writing unit, and the length of the diagonal line A′D is a length between a line having A′ as a starting point and having an angle of 135° with the line LL′ and a cross point D of the line with the writing unit.

8. The recording device according to claim 7 ,
wherein (A′D/A′C) that is the ratio of the length of the diagonal line A′D to the length of the diagonal line A′C is 1.10 or greater.

9. The recording device according to claim 7 ,
wherein a minimum distance between centers of the optical fibers is 1.0 mm or less.

10. The recording device according to claim 7 ,
wherein the number of the optical fibers aligned in the optical fiber array is 10 or greater.

11. The recording device according to claim 7 ,
wherein the recording target is a thermosensitive recording medium, or a structure including a thermosensitive recording area, or both.

12. The recording device according to claim 7 ,
further comprising a recording target-conveying unit configured to convey the recording target,
wherein laser light is applied to the recording target to record an image while conveying the recording target by the recording target-conveying unit.

Assignees

• Uetake Kazuyuki
• Hotta Yoshihiko
• Sawamura Ichiro
• Ishimi Tomomi
• Yokota Yasuroh
• Ricoh Co Ltd

Inventors

• Uetake Kazuyuki
• Hotta Yoshihiko
• Sawamura Ichiro
• Ishimi Tomomi
• Yokota Yasuroh

Classifications

• G02B6/3672

  with fibres arranged in a regular matrix array · CPC title

• B41J2/4753

  using thermosensitive substrates, e.g. paper · CPC title

• B41M5/46

  characterised by the light-to-heat converting means; characterised by the heat or radiation filtering or absorbing means or layers · CPC title

• B41J2/475 Primary

  for heating selectively {by radiation or ultrasonic waves} · CPC title

• G02B6/3839

  for a plurality of light guides · CPC title