Offset Press
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| Blanket | A fabric placed around the blanket cylinder of the press. It receives the inked image from the plate cylinder.
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| Blanket cylinder | A cylinder of the press which holds the blanket.
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| Bleed | Any printed material which runs off the edge of the page.
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| Chain delivery | Positive control of each sheet as it is placed in delivery position
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| Color separation | Separating artwork of colored prints or transparencies into three or four process colors
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| Continuous tone copy | A full range of tones from white to black. A black and white photograph is one example.
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| Crop marks | Marks placed on the image (photograph or illustration) telling the printer what portion is to be printed.
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| Cylinders | Drum found on the press to support the plate, blanket and the printing stock white it is being printed.
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| Dampeners | Rollers distribute moisture to the plate
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| Dampening solution | Solution which keeps the non-image area of the plate clean
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| Densitometer | An instrument that measures densities of film
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| Density | A very dense area will not allow light to pass through or reflect light from it, while a light area will allow more light to through or reflect from its surface.
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| Developer | A chemical solution which creates an image on a piece of film after the film is exposed to the light.
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| Developing | Preparing the image carrier (printing plate)
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| Distributor roller | Rollers between the fountain roller and the form roller.
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| Dots | Small to large clear areas in a negative or positive made by contact screen.
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| Ductor roller | In the offset inking system, a roller which alernatelv contacts the fountain roller and a distribution roller.
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| Dummy | As it will appear after printing ; a sample specification.
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| Duplicator | A small printing machine
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| Feeder | A section of the press which delivers a sheet to be printed.
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| Flat | A material which supports the film negative or positive
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| Form rollers | Ink roller which re-inks the plate
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| Fountain solution | Water-acid mixture which covers the non image area while printing.
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| Gripper | Devices on the impression cylinder which holds the sheet while its being printed
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| Gripper edge | The leading edge or first part of a sheet to go through the press.
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| Gum | Liquid placed on the surface of the image carrier to protect it when its not being ran.
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| Halftone | A photograph broken up into a variety of dot sizes which gives a graduation of tones.
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| Impression | Placing an image on stock, such as paper.
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| Impression Cylinder | Holds and presses the sheet against the blanket cylinder of the press
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| INK | The material, which comes in many colors, that adheres to the image area of the press.
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| Ink fountain | ink supply area on the press.
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| Ink rollers | Supply ink to the image area of the image carrier.
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| Lithography | Printing from a flat surface; based on the principle that oil and water do not mix.
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| Masking sheets | Stock which will filter out ultraviolet rays to which negatives and positives are attached
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| Masking tape | A light blocking tape used to attach negatives or positives to the masking sheet.
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| Offset lithography | Printing from a flat surface using the transfer image process; based on the principle that water and oil do not mix.
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| Opaquing | Painting out an area so that light cannot pass through.
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| Padding | Gluing one edge of stacked sheets together, used for making scratch pads.
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| Plateband | Space needed to attach the plate to the cylinder.
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| Press | The unit which prints a printed product.
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| Proof | A copy of the final material which is checked against the original.
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| Register | Accurate positioning of material so that it will line up with another.
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| Register marks | Symbols used to line up one image with another.
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| Register pins | Pins which hold the plate flat in exact position while burning plate
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| Signature | Large sheet of paper, containing several pages, folded down to size of single page.
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
Brighton Graphics
Popular Graphic Arts sets