Stamp Printing

'Printed' Stamps - Part 1
In addition to the line-engraved postage stamps we have described at length, a great many postage stamps of the world have been printed by more ordinary processes. All forms of printing have...
'Printed' Stamps - Part 2
A great many postage stamps of the world have been produced by lithography and some stamps have been produced in the same design by both lithography and steel engraving. Many lithographed...
Stamp Printing - Part 1
Because some stamps have been printed by two or more methods and because specialists often collect various kinds of printing flaws, the entire subject of printing is of interest to all collectors. In fact...
Stamp Printing - Part 2
Perkins did not invent line engraving. He invented a process of transferring a steel engraving to another piece of metal. This process plays such an important part in philately that...
Stamp Printing - Part 3
Still again, instead of trying to re-enter the design with the transfer roll, "recutting" would be resorted to. In this case the engraver would recut by hand the lines that were not properly...
Embossing
Embossing, the method used to produce all Government stamped envelopes of the United States and several other countries, is basically letterpress printing. It differs only in that the uninked...
Offset Stamp Printing
This is a variation of the lithograph process in which the design is transferred from the printing roller to a rubber roller and then, "offset" to the paper. It is a particularly rapid process and one...
Photogravure And Rotogravure
These are methods of intaglio printing widely used in commercial printing (and by various other names), as for the Sunday pictorial supplement of newspapers. It is true intaglio printing in that...
Preparation Of The Steel Plate
Prior to the actual laying down of the designs from the transfer roll as described earlier, the steel printing plate must be prepared. Everything that is done to this plate will show up on...
Printing From A Line-Engraved Steel Plate
The finished steel plate, ready for the printer, presents a perfectly smooth, highly polished surface (sometimes chromium-plated) in which the lines to be printed are recessed. To ink this plate...
The Wonderful Giori Press
We have indicated the difficulty of registering colors in multicolor printing from line engraved plates. All we have stated on this matter was true and continued to be true for all United States...