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EP0468237A2
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Method of and apparatus for rewritable recording and erasing and rewritable recording film
Assignee: Mitsubishi Electric Corp
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Filing: 1991-07-03
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Granted: —
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Expires: 2011-07-03
Abstract
Abstract In a rewritable recording apparatus using a recording medium (1) having a recording layer which exhibits a color developing property when a first kind of heat energy (h1) is applied thereto and a tone reducing property when a second kind of heat energy (h2) is applied thereto, a recording-energisation control section (34) supplies an image recording signal corresponding to a desired display image to a heating device (3) to cause it to generate heat with the first kind of heat enerby (h1). This heating device (3) imparts the first kind of heat energy (h1) to the recording medium (1), whereby a desired display image is recorded on the recording medium (1). An erasion-energisation control section 35 supplies an image erasion signal corresponding to a desired erasing range to the heating device (3) so as to cause it to generate heat with the second kind of heat energy (h2). This heating device (3) imparts the second kind of heat energy (h2) to the recording medium (1), whereby the image recorded on the recording medium (1) is erased. <IMAGE>
Inventors
- 👤 Keiki Mitsubishi Denki K.K. Yamada
- 👤 Masaru Mitsubishi Denki K.K. Ohnishi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 07:19
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/30; B41M5/305
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
109 words
A method of rewritable recording and erasing comprising the following steps: effecting full-face recording on a rewritable recording film (1) with a first kind of heat energy (h1 erasing the recording with a second kind of heat energy (h2); and then effecting ordinary recording and erasion; the rewritable recording film (1) being designed such as to allow a colored image to be formed thereon for recording or display with the first kind of heat energy (h1) and as to allow the colored image to be erased therefrom with the second kind of heat energy (h2), thus making it possible to repeatedly effect the formation and erasion of colored images.
Claim 2
Independent Claim
109 words
A method of rewritable recording and erasing comprising the following steps: effecting full-face recording on a rewritable recording film (1) with a first kind of heat energy (h1 erasing the recording with a second kind of heat energy (h2); and then effecting ordinary recording and erasion; the rewritable recording film (1) being designed such as to allow a colored image to be formed thereon for recording or display with the first kind of heat energy (h1) and as to allow the colored image to be erased therefrom with the second kind of heat energy (h2), thus making it possible to repeatedly effect the formation and erasion of colored images.
Claim 3
Dependent Claim
83 words
A rewritable recording film (1) comprising: a recording surface designed such as to allow a colored image to be formed thereon for recording or display with a first kind of heat energy (h1) and as to allow the colored image to be erased therefrom with a second kind of heat energy (h2), thus making it possible to repeatedly effect the formation and erasion of colored images; and markers (23) previously recorded on the rewritable recording film (1) so as to indicate predetermined positions.
Claim 4
Dependent Claim
83 words
A rewritable recording film (1) comprising: a recording surface designed such as to allow a colored image to be formed thereon for recording or display with a first kind of heat energy (h1) and as to allow the colored image to be erased therefrom with a second kind of heat energy (h2), thus making it possible to repeatedly effect the formation and erasion of colored images; and markers (23) previously recorded on the rewritable recording film (1) so as to indicate predetermined positions.
Claim 5
Dependent Claim
37 words
The rewritable recording film as claimed in claim 2, further comprising: - a base (22); - a recording layer (21) superimposed on the base (22); and - a protective layer (20) superimposed on the recording layer (21).
Claim 6
Dependent Claim
247 words
A rewritable recording apparatus of the type using a rewritable recording film (1) which is designed such as to allow a colored image to be formed thereon for recording or display with a first kind of heat energy (h1) and as to allow the colored image to be erased therefrom with a second kind of heat energy (h2), thus making it possible to repeatedly effect the formation and erasion of colored images, the recording apparatus comprising: - at least one heating means (3; 80, 81) adapted to effect heating with the first or the second kind of heat energy (h1, h2); - a recording control means (33, 32, 34) adapted to supply an image recording signal corresponding to a desired image to the heating means (3; 80) to cause it to generate heat with the first kind of heat energy (h1); - an erasion control means (33, 32, 35) adapted to supply an image erasion signal corresponding to a desired erasing range to the heating means (3; 81) to cause it to generate heat with the second kind of heat energy (h2); - a detection means (5) adapted to detect a marker (23) recorded on the rewritable recording film (1) of the leading edge of the rewritable recording film (1) to emit a detection signal; and - a position control means (3a; 72) adapted to perform position control on the rewritable recording film (1) during recording and erasing in accordance with the output of the detection means.
Claim 7
Dependent Claim
247 words
A rewritable recording apparatus of the type using a rewritable recording film (1) which is designed such as to allow a colored image to be formed thereon for recording or display with a first kind of heat energy (h1) and as to allow the colored image to be erased therefrom with a second kind of heat energy (h2), thus making it possible to repeatedly effect the formation and erasion of colored images, the recording apparatus comprising: - at least one heating means (3; 80, 81) adapted to effect heating with the first or the second kind of heat energy (h1, h2); - a recording control means (33, 32, 34) adapted to supply an image recording signal corresponding to a desired image to the heating means (3; 80) to cause it to generate heat with the first kind of heat energy (h1); - an erasion control means (33, 32, 35) adapted to supply an image erasion signal corresponding to a desired erasing range to the heating means (3; 81) to cause it to generate heat with the second kind of heat energy (h2); - a detection means (5) adapted to detect a marker (23) recorded on the rewritable recording film (1) of the leading edge of the rewritable recording film (1) to emit a detection signal; and - a position control means (3a; 72) adapted to perform position control on the rewritable recording film (1) during recording and erasing in accordance with the output of the detection means.
Claim 8
Dependent Claim
27 words
The apparatus as claimed in claim 4, further comprising a marker recording means (70) for recording markers (24) at predetermined positions on the rewritable recording film (1).
Claim 9
Dependent Claim
40 words
The apparatus as claimed in claim 4 or 5, wherein prior to performing recording by the recording control means (33, 32, 34) unnecessary image portions on the rewritable recording films are erased by the erasion control means (33, 32, 35).
Claim 10
Independent Claim
47 words
The apparatus as claimed in any of claims 4 to 6, wherein the rewritable recording film such that, assuming that the heating area per pixel for recording is S1 and that the heating area per pixel for erasion is S2, the following relationship holds true: S1 S2.
References Cited (Backward Citations)
No citation records indexed.
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