Sheets for formation of patterns and methods for forming and fix

Details Sheets for formation of patterns and methods for forming and fix Sheets for formation of patterns and methods for forming and fix

1988-12-05

1990-11-20

Schwartz, Pamela R.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Including a second component containing structurally defined...

428195, 428206, 428207, 428208, 428209, 428210, 428325, 428328, 428329, 428364, 428913, 428914, B32B 516

Patent

active

049718584

DESCRIPTION:

BRIEF SUMMARY
TECHNICAL FIELD

The present invention relates to sheets for forming patterns, and ribbons for printing and ink ribbon cartridges produced using said sheets, and ink-receiving type, flexible sheets for firing and labels for firing using said flexible sheets and supports thereof, and methods for forming and fixing patterns using them.


PRIOR ART PROBLEMS

In the technical area requiring the fixing of such formed patterns by firing as glazing on porcelain, circuit patterns on thick film hybrid integrated circuits, patterns as electrodes, resistances, dielectrics or the like on electronic parts and the like, methods for formation and fixing of patterns have been heretofore carried out which comprise preparing a pasty ink from a mixture of a pigment, a material for a conductor, resistance, dielectric or the like, a glass frit and a binder, printing a pattern on a substrate with the pasty ink by screen-printing or other technique, and firing the printed pattern. However, the screen-printing technique, although suitable for mass-producing a single kind of product, has the problems of being time-consuming and costly in preparation from a block copy to a screen, hence low in productive efficiency. With this drawback, the technique is not suited to multikind and small-quantity production, testing of products and the like. Known methods for transfer of patterns to substrates include direct printing methods, methods able to transfer the printed patterns on transfer paper by water slide transfer technique or other means and so on. Yet these methods have posed the problems of difficulties in printing on a curved surface, automation of printing, etc.
To overcome the foregoing problems, we have attempted to practice a method in which patterns are depicted with XY plotter or the like over carbon paper or to use various printers, currently in wide use, capable of forming the desired patterns by dotting. However, the carbon paper used under the plotter and the ribbons for printing for use in the printers have the following fundamental drawbacks.
Known sheets for forming patterns such as carbon paper, ribbons for printing or the like include, for example, those prepared by kneading and dispersing wax, a binder, a pigment of each color such as carbon black and the like to give a paste and coating a film of polyethylene terephthalate or other material with the paste or impregnating the paste into cloth, etc. Since the sheets of this type are intended for exclusive use in printing or transfer of patterns, the sheets when used for said method involving the firing at about 300.degree. to about 1400.degree. C. cause the patterns formed thereon to burn out or to change the properties, failing to provide a satisfactory degree of patterns or prints.
Consequently, technical means suitable for multikind and small-quantity production has been substantially unavailable for the formation of patterns to be fixed by firing.
The formation of patterns to be fired is applied not only to means for manufacture of such goods as described above at the beginning of the description.
Certain of current processes for multikind and small-quantity production require, in view of purpose of the process, heat treatment, treatment with chemicals such as acids or alkalis, various surface treatments or the like. The production control of products in such process has increasingly necessitated the attachment of control labels to starting materials or semi-manufactured products to vary the conditions in each procedure from product to product according to the information indicated on the label.
Such control labels require the formation of patterns for recognition, each different from others, namely the formation of multikind and small-quantity patterns. Further the labels must be excellent in heat resistance, chemical resistance and durability.
Heat-resistant, chemical-resistant and durable labels heretofore used for control of goods made of, e.g. glass, metals or sintered ceramics include those formed on a substrate such as sheets or enamelled sheets of fired c

REFERENCES:
patent: 2359462 (1944-10-01), Bricker

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