Object Details
- patentee
- Woodward, Charles B.
- Description (Brief)
- This patent model demonstrates an invention for methods of making photomechanical or other prints resemble original photographs. The invention was granted patent number 493850.
- Tonal photomechanical reproductions had an objectionable coarseness because of the perceptible pattern of the halftone screen. By this invention, screened plates-either bearing an image or blank-were printed several times slightly out of register with each other, softening the effect of the screen. The key impression of the image would be made first in a dark ink with a heavy body, and then the other impressions in paler or lighter-bodied inks. To imitate sepia photographs, later impressions were made in brown tinted inks.
- Location
- Currently not on view
- ca 1893
- patent date
- 1893-03-21
- ID Number
- GA.89797.493850
- patent number
- 493850
- accession number
- 089797
- catalog number
- GA*89797.493850
- Object Name
- process, photomechanical plate printing
- Plate
- photomechanical (engraving) printing plate
- photomechanical printing plate
- Object Type
- plate
- Patent Model
- Physical Description
- paper (overall material)
- Measurements
- part:small photos: 10.8 cm x 16.5 cm x .1 cm; 4 1/4 in x 6 1/2 in x 1/16 in
- part:large photos: 27.4 cm x 34 cm x .1 cm; 10 13/16 in x 13 3/8 in x 1/16 in
- See more items in
- Work and Industry: Graphic Arts
- Patent Models, Graphic Arts
- Work
- Communications
- Industry & Manufacturing
- Patent Models
- National Museum of American History
- Record ID
- nmah_998964
- GUID (Link to Original Record)
- https://n2t.net/ark:/65665/ng49ca746a8-88cb-704b-e053-15f76fa0b4fa
