Master cards for hectographic printing
AssigneeData Card (U.K.) Limited
InventorColin H. S. Smith
Life of this patent
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Abstract
A master card for use in a hectographic printing machine, comprises two layers of snythetic plastics material, having respective apertures therein which are aligned with each other to form a window, and a layer of carbon-receiving material between the synthetic plastics layers and closing the window. The card has an information-carrying zone including opaque areas into which holes can be punched to form transparent areas arranged in predetermined positions to provide information readable by light transmission, and a strip of magnetic material which is machine programmable by magnetization and machine readable.
Claims13
A method for making a master card for use in a hectographic printing machine, comprising the steps of
- (a) securing a layer of carbon receiving paper material between a pair of layers of synthetic plastic material, said layers of synthetic plastic material containing aligned window apertures, respectively, said paper layer extending completely across said aligned window apertures;
- (b) applying a magnetically encoded strip on the outer surface of one of said synthetic plastic layers;
- and
- (c) printing a plurality of information-bearing spaced opaque bars on said outer surface, whereby said card may be used to control the operation of a hectographic printing machine.
A generally planar master card for use in a hectographic printing machine, comprising
- (a) a layer of carbon receiving material;
- and
- (b) first and second layers of synthetic plastic material bonded to and in contiguous relation with opposite sides of said paper layer, respectively;
- (c) said layers of synthetic plastic material containing aligned window apertures, respectively, said paper layer extending completely across said aligned window apertures, whereby the card may be used to control the operation of a hectographic printing machine.
A generally planar master card for use in a hectographic printing machine, comprising
- (a) a layer of carbon receiving material;
- and
- (b) first and second layers of synthetic plastic material bonded to and in contiguous relation with opposite sides of said paper layer, respectively;
- (c) said layers of synthetic plastic material containing aligned window apertures, respectively, said paper layer extending completely across said aligned window apertures;
- (d) the outer surface of one of said synthetic plastic layers including
- (1) a strip of magnetically encoded material;
- and
- (2) an information bearing zone including an opaque area containing a plurality of information apertures passing completely through said first and second plastic layers and said carbon receiving material, said apertures being arranged in a predetermined encoded pattern, whereby the card may be used to control the operation of a hectographic printing machine wherein information is read from the card via light transmission through said information apertures.
Dependencies are inferred from the claim text.