US2026021A

US2026021A - Printing member

Info

Publication number: US2026021A
Application number: US473199A
Authority: US
Inventors: Stanley A Danser
Original assignee: Individual
Current assignee: Individual
Priority date: 1930-08-05
Filing date: 1930-08-05
Publication date: 1935-12-31
Anticipated expiration: 1952-12-31

Description

Patented Dec. 31, 1.935

. UNITED STATE-s .PATENT OFFICE Pam'rmc. MEMBER v Stanley A. Danser, Rochester, N. Y., assign'or, by mesne assignments, to Vivian M. Stacy-Bush,

Rochester, N. Y.

Application August 5, 1930, Serial No. 473,199

' Renewed November 14, 1935 ociaims. (01.101-379) This invention relates to printing members and a process of making the same, and has for an object the provision of an improved printing member, and of an improved process of making such printing members. In the drawing accompanying this specication and forming a part of this application I have shown, for purposes of canizablerubber comprising a plurality of thicknesses, plied up on a calendar, in a well known manner, and of suitable composition so that when vulcanized or cured under proper heat and pressure, the resulting product will be relatively dense and hard, though slightly elastic, to form a base adapted to be supported directly upon the platen of the press, and of such thickness as to support the printing surface of the printing element B in type-high relation. The printing element B also comprises a plurality of rubber layers; plied up on a calendar,

but of such compositionthat when vulcanized or cured under proper heat and pressure, similar to that applied ln connection'with the base.A

A, the resulting product will be relatively softer and more elastic than the base A, but still of4k suilicient hardness and body as to provide a -glossy smooth printing surface adaptable for engraving or etching, and which will retain its form without deformation under printing pressures. As shown, a design C is engraved thereon, and provides an intaglio printing surface, though of course it will be understood that the printing surface may also be in relief or of the planographic type. The base A and the printing element, B are united by vulcanizing the same together, the uniting being eiected during the simultaneous curing of the base A and printing element B.

The printing member thus provided, embodies the relatively hard though slightly elastic base Awhich supports the printing element B directly from the platen of the press, and in type-high relation, while the printing element B, though of suillcient elasticity to yield to inequalities in the matter printed, nevertheless is of such hardness as to provide a smooth surface in which the design may be engraved or etched, and which resists deformation ofthe design during the printing operation.

vThe printing member is particularly well adapted for printing in water color ink, though equally well adapted for printing in oil, carbon, or other inks. 1

In producing the'printing member, a plurality of layers of rubber of the desired character to produce the base A are plied up on a calendar,

and a plurality of layers of rubber of a diiferent character to produce the printing element B, are also plied up on a calendar. The printing element B is then laid upon the base portion A, and the two full-molded in a mold I0, provided with a movable element Il bearing upon a steel plate I2, havingv a face of great smoothness adapted to engage the upper outside surface of the printing element B. Heat and pressure are then applied to he mold in a well known manner, resulting in the simultaneous vulcanizfation' of the base portionjA and printing element B to diiferent degrees of consistency, and uniting the same, and by reason of the presence of the smooth surfaced plate' l2,- a correspondingly smooth surface is imparted to the printing element B. After removal from the mold the printing member is buied or sanded to obtain the exact size required so that the printing surface of the printing element B will be in type-high relation when the printing member is placed in the press.

It will be apparent to those skilled in the art lthat I have accomplished at least the principal object of my invention; it will also be apparent to those skilled in the art that the embodiments herein described may be variously changed and modified without departing from the spirit of the invention; and it will further be'apparent that the invention is capable Vof uses and has advantages not herein specifically described; hence it will be appreciated that such embodiments are illustrative only, and that my invention is not A limited thereto.

I claim:

1. A printing plate, adapted for use in a printing press, comprising: av supporting base, of substantially uniform thickness; and a printing face, of a rubber composition, carried by said base; said base being of a rubber composition, relatively harder, at least semi-hard, and substantially rigid, itself xedly supporting said face.

2. A printing-press printing plate, comprising: a supporting base of substantially uniform thickness; and a printing face, of a rubber composition, constituted for engraving, and carried by said base; said base being of a rubber composition, at least semi-hard, and substantially rigid,

itself xedly supporting said face.

3.A printing plate, adapted for use in a printing press, comprising: a supporting base, of substantially uniform thickness; and a printing face, of a rubber composition, constituted for engraving, and can'ied by said base; said base being of a rubber composition, a't least semi-hard, and substantially rigid, itself iixedly supporting said face; and said face .being permanently intercalated to said base.

4. A printing plate, adapted for use in a printing press, comprising: a supporting base; and a printing face, of a rubber composition, constituted forengraving, and carried by said base;

said base being of a rubber composition, at least semi-hard, and substantially rigid, itself flxedly supporting said face; and said face being permanently intercalated to said base.

5. A printing-press printing plate, comprising: a supporting base; and a printing face, carried by said base; said base being of a rubber composition, suitable to constitute a support, and said face being of a rubber composition, constituted for engraving; and said face being permanently intercalated to said base.

6. A printing-press printing plate, comprising: a supporting base;` and a printing face, carried by said base; said base being of a rubber composition, relatively hard, and said face being of a 'rubber composition, relatively soft; and said 5 face being permanently intercalated to said base.

7. A type-high printing-press printing plate, comprising: a printing face, of relatively soft rubber; and a supporting base for said face, of relatively hard rubber, solidly supporting said 10 face, and of a predetermined substantially uniform thickness whereby vsaid plate is standard printing-press type-high. i

8. A type-high printing-press printing plate, comprising: a printing face, of a rubber compo- 15 sition, constituted `for engraving, and suitable for printing; and a supporting base for said face, of a diierent rubber composition, substantially rigid, suitable for a support, solidly 'supporting said face, and of a predetermined substantially 20 uniform thickness whereby said plate is standard printing-press type-high.

9. A type-high printing-press printing plate, comprising: a printing face, of relatively soft rubber; anda supporting base for said'sface, of 25 relatively hard rubber, of a predetermined substantially uniform thickness whereby said plate is standard printing-press type-high, and to which said face is permanently intercalated.

30 'STANLEY A. DANSER..y