Blueprint vs Origami Diagram
ブループリント / 折り図
Blueprint comes from Technical Expression and Origami Diagram from Diagrammatic Expression. Both are read here as style. They are reached for with some of the same intent, which is where they get confused.
Blueprint
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Instead of a finished object it shows the lines of the thinking behind it, communicating structure and possibility.
Origami Diagram
The dotted-line-and-arrow language systematized by Akira Yoshizawa for writing three-dimensional folding onto flat pages. Mountain and valley folds read across languages, and the crease pattern became an object of mathematics.
| Blueprint | Origami Diagram | |
|---|---|---|
| Era | industrial | 1950s– |
| Family | Technical Expression | Diagrammatic Expression |
| Kind | Style | Style |
| Cues | White lines on blue / Dimensions / Sections / Handwritten notes | Mountain and valley line styles / Arrows guiding each step / Sequential step diagrams / The geometry of crease patterns |
| Best used for | Visualizing concepts, design and process · Structural credibility for products and architecture | Guiding a stepped procedure to the end without using any words · Publishing a fold so another person reaches the same result |
| Type | Monospace plus drafting-style handwriting | Dash dot for mountain, dashed for valley, never varied across figures |
| Composition | Orthographic views, sections, dimension lines tied to real information | One action per figure, its result confirmed at the top of the next |
| Material | Deep blue, white lines, fine paper grain | Front and back in two tones, turns and flips marked by arrows |
| Caution | No fake drawings as decoration. Bind everything to actual structure and thought. | Packing several folds into one figure hides where to begin, the paper stops matching the drawing, and the reader cannot finish. |