A printing press, either digital or offset, that prints on cut sheets of | |
| paper. |
Sheets per hour | A term commonly used to describe the speed of binding and folding |
| operations. |
Short edge feed | The shortest edge of the paper is fed into the printer first. |
Short grain | Paper in which the orientation of fibres is parallel to the shortest edge |
| of the sheet. For example, in an A4 sheet, the fibres of a short grain |
| sheet are parallel to the 210 mm dimension of the page. |
Short run | A run length on a printing press typically less than 1,000 copies. |
| Printing on one side of a sheet that can be seen on the other side under |
| normal lighting conditions. |
Signature | Both sides of a printed sheet that are folded to make up a section of a |
| printed piece. A greeting card is a good example – when opened fully, |
| the card is divided into quadrants. |
Simplex | To print on one side of a sheet and leave the other side blank (digital or |
| xerographic printing term). |
Spectrophotometer | An instrument for measuring colour in CIE colour spaces. |
Spot colour | A colour printed with custom inks rather than process colours. The |
| colour is usually specified using the PMS or Pantone numbers. |
Spread | A form of trapping. A spread traps a light foreground to a dark |
| background. The lighter colour is spread outward slightly into the darker |
| colour to maintain the visual edge. See also choke. |
Spreads | Printer spreads are pages that appear next to each other so that after |
| folding and finishing, they are in the proper order. Reader spreads are |
| pages that appear across from one another in the final bound and |
| finished publication (ie, what the reader actually sees). |
SRA0 | Standard ISO cut sheet size of 900 x 1280 mm. The sheet size is slightly |
| larger than A0 allowing for bleed. |
SRA1 | Standard ISO cut sheet size of 640 x 900 mm. The sheet size is slightly |
| larger than A1 allowing for bleed. |
SRA2 | Standard ISO cut sheet size of 450 x 640 mm. The sheet size is slightly |
| larger than A2 allowing for bleed. |
SRA3 | Standard ISO cut sheet size of 320 x 450 mm. The sheet size is slightly |
| larger than A3 allowing for bleed. |
Stochastic screening | A relatively new method for creating halftones. Stochastic screening |
| generates equal size dots that appear to be placed randomly. Advanced |
| algorithms are used to determine the optimum placement of dots so as |
| not to cause visual artifacts (such as moire patterns). Registration on |
| press is slightly more difficult than with lined screens but the colours |
| can be very brilliant. The concepts of screen frequency and screen |
| angles do not apply with stochastic screening. Also called FM screening. |
DocuColor 2000 series design guide
G- 12 
