Photocopying – Contact printing – Light boxes
Patent
1989-06-02
1991-11-12
Grimley, A. T.
Photocopying
Contact printing
Light boxes
355272, 355285, 355326, G03G 2100
Patent
active
050651838
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates generally to color printing methods and processes, and more particularly to a multicolor printing process or operation to be performed upon a container, which may be fabricated from various materials, such as, for example, metal, glass, plastic, paper, or the like, by means of a single thermal transfer process utilizing electrophotographic printing technology.
BACKGROUND OF THE INVENTION
In general, the lithographic offset printing method and the letterpress printing method are well-known in the art as printing methods or processes for performing multicolor printing operations upon a container fabricated from various materials, such as, for example, metal, glass, plastic, paper, or the like. In accordance with the techniques characteristic of the lithographic offset printing method, ink adheres to a picture-line portion of a lithograph as a result of the picture-line portion of the lithograph being provided with a lipophilic property, while the non-picture-line portion of the lithograph exhibits or is provided with a hydrophilic property. The ink upon the lithograph is then transferred to a rubber blanket, and in turn, the ink disposed upon the rubber blanket is finally transferred to a material or object to be printed.
Similarly, in accordance with the techniques characteristic of the letterpress printing method, ink is applied to the picture-line portion which is provided upon a press in the form of a relief, and subsequently, the ink is transferred onto a material or object to be printed.
The aforenoted conventional printing methods, processes, and techniques are therefore appreciated as being superior in connection with the mass production of printed materials or objects, however, such methods or techniques do in fact require the pre-fabrication of the requisite printing plates or the like which of course entail considerable manufacturing costs, time, and labor, before the same are even used in connection with the actual printing operation to be performed upon the material or object to be printed. Accordingly, it can be further appreciated that such conventional multicolor printing processes or methods involve considerably or substantially more time and labor when it is in fact desired to print or register the respectively different colors of the multicolor printing operation upon the material or object to be printed.
Recently, electronic techniques have been developed within the printing technological field, such as, for example, the use of computerization, utilizing a layout scanner, in connection with an original manufacturing operation, and the development of a direct plate-making system for use within a plate-making process, however, techniques have nevertheless not as yet been developed for permitting elimination of the plate-making process per se for manufacturing the requisite printing plates, and consequently, the drawbacks and deficiencies of the prior art or conventional systems, processes, methods, and techniques still exist and remain.
Still further, in accordance with individual preferences, tastes, and pre-selected designs, there are increasing requirements for printing such various designs or indicia upon multiple kinds of materials and products, and consequently, it is becoming ever-increasingly more difficult to satisfy or achieve such requirements by means of such aforenoted conventional printing methods and techniques which are not particularly adaptable to readily alterable or adjustable printing functions or operations.
Considering then entirely different or alternate types printing techniques, such as, for example, those processes or techniques which do not require the use of printing plates, the electro-photographic printing method or the ink-jet printing method, also known as the non-impact printing technique, are in fact well-known. In accordance with these noted types of printing methods or techniques, a pictorial image can in fact be directly obtained by means of a pictorial image output from a computer without using a
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Aizawa Masanori
Ishibashi Kazuhisa
Machii Akihiko
Morofuji Akihiko
Morotomi Masaki
Barlow Jr. J. E.
Grimley A. T.
Toyo Seikan Kaisha Ltd.
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