Photocopying – Using microcapsules
Reexamination Certificate
1999-03-12
2002-06-25
Adams, Russell (Department: 2851)
Photocopying
Using microcapsules
C400S120020, C430S138000, C428S321500
Reexamination Certificate
active
06411369
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a color image-forming system for forming an image on a recording sheet, coated with a micro-capsule layer by selectively breaking and squashing the micro-capsules in the micro-capsule layer. Further, the present invention relates to such a recording sheet used in the image-forming system.
2. Description of the Related Art
In a conventional color-image forming system, a color image is formed on a recording sheet by a color printer of a color copier. The color image is formed by a plurality of kinds of color ink and color toner or other color developments on a recording sheet. Advantageously, it is possible to form the color image on any type of recording media, however, disadvantageously, a plurality of recording processes are necessary as each color is separately recorded on the recording sheet through independent recording processes. Thus the color-image forming process is complicated and the process time is rather long.
Another system is known, in which a color image is formed by focusing an optical color image on a color photographic paper. Chemical processes, such as a development process and a fixing process, using expensive equipment are necessary for the system. The photographic paper must also be carefully handled due to its photosensitivity. Therefore, this system needs a large amount of equipment investment and highly professional operators.
In Japanese Patent Publication after Examination Hei04-004960, a color image recording media is shown, that consists of a base sheet with a layer of the micro-capsules covering the base sheet. The micro-capsules are filled with heat-sensitive and photosensitive color developing dye or ink. The color of the dye or ink changes in response to a temperature change and the color is fixed by light irradiation of a predetermined wavelength at a predetermined temperature. When three temperature levels are determined corresponding to three different colors, and the light to be radiated is determined for fixing the colors at the determined temperature levels, a color image can be formed on the micro-capsule layer. This system needs a long process time due to a plurality of recording processes required for one color image, similarly to the above color printer or the color copier.
SUMMARY OF THE INVENTION
Therefore, an object of the present invention is to provide a color image-forming system for forming an image on a recording sheet, coated with a micro-capsule layer, by selectively breaking and squashing the micro-capsules in the micro-capsule layer.
Another object of the present invention is to provide a pressure-sensitive and heat-sensitive recording sheet for simple and efficient recording of a full-color image.
An image-forming system according to the present invention comprise a recording sheet that includes a base member and a micro-capsule layer of a plurality of types of micro-capsules on the base member, each type of micro-capsules being broken under a predetermined pressure and temperature, each type of micro-capsules having a color different from other types of micro-capsules, each type of micro-capsules being filled with a core material which is discharged when each type of micro-capsules is broken, color being blended-out when core material is discharged, and a selective breaking unit for selectively breaking said micro-capsules.
A recording sheet of an image-forming system according to the present invention comprises a base member, and a micro-capsule layer of a plurality of types of micro-capsules on the base member, each type of micro-capsule being broken under a predetermined pressure and temperature, the predetermined pressure and temperature of one type of micro-capsule being different from said predetermined pressure and temperature of other types of micro-capsule, each type of micro-capsule having a color different from other types of micro-capsule, each type of micro-capsule being filled with a core material which is discharged when the micro-capsule is broken, such that the color is blended-out.
Another recording sheet according to the present invention comprise a base member, and a micro-capsule layer of a plurality of types of micro-capsules on the base member, the total micro-capsules being broken under a predetermined pressure and temperature, each type of micro-capsule having a color different from other types of micro-capsule, each type of micro-capsule being filled with a core material which is discharged when the micro-capsule is broken, such that the color is blended-out.
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Furusawa Koichi
Orita Hiroshi
Saito Hiroyuki
Suzuki Katsuyoshi
Suzuki Minoru
Adams Russell
Asahi Kogaku Kogyo Kabushiki Kaisha
Fuller Rodney
Greenblum & Bernstein P.L.C.
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