Mike Wells

Project 1-13

mikewellls — Tue, 15 Jun 2010 19:03:49 +0000

Vocabulary Day 173

mikewellls — Mon, 14 Jun 2010 18:29:58 +0000

Molleton: A thick cotton fabric similar to flannel it has a long nap and is used to cover form rollers in conventional lithographic dampening.

On- Demand Printing: Commercial- quality printing produced as needed with turnarounds of a dew hours or less.

Vocabulary Day 172

mikewellls — Mon, 14 Jun 2010 18:26:30 +0000

Metallic Ink: An ink with fine aluminum, bronze, or copper powders in its pigment.

Metering Up: The line of contact between two rollers in the dampening system of a lithographic press.

Vocabulary Day 171

mikewellls — Thu, 10 Jun 2010 18:32:49 +0000

Incline press: A screen printing press in which the screen maintains a position parallel to the printing bed, bu recedes diagonally during the feed/take-off cycle.

Leafing: The phenomena that occurs when mental flakes in metallic inks float to the surface of the ink, giving it a particular luster.

Vocabulary Day 170

mikewellls — Thu, 10 Jun 2010 18:31:14 +0000

Gripper Edge: On a sheetfed press, the leading edge of the paper that rests at head stops and is grabbed by mechanical fingers known as grippers. The press operator typically marks the gripper edge with an “XXX” before sending the job to the binding and finishing area.

Hickey-Picking Roller: A roller that has a synthetic fibers embedded in its surface, to help it remove hickeys from the surface of an offset printing plate or to fill in the white ring on the plate surface. This roller replaces one of the ink form rollers.

Vocabulary Day 169

mikewellls — Wed, 09 Jun 2010 18:27:06 +0000

Front Stops: A series of devices that halt the forward movement of a press sheet on the feedboard. The front stops square the sheet in relation to the printing cylinders and determine the print margin. The front stops are part of the three-point register system. Alternative term: front guides

Gear Streaks: Parallel streaks appearing across the printed sheet at the same interval as gear teeth on a cylinder.

Vocabulary Day 168

mikewellls — Mon, 07 Jun 2010 19:02:34 +0000

Eccentricity: A roller or cylinder that does not rotate in a true concentric circle in relation to its axis. Alternative term: off center, out-of-round.

Flagging: (1) Indicating a web splice so that the spliced product can be removed from the press folder and discarded. (2) Marking printed matter to indicate a change or correction. (3) Inserting small strips of paper into a skid of press sheets as needed to indicate segments of defective printed sheets.

Vocabulary Day 167

mikewellls — Fri, 04 Jun 2010 18:56:42 +0000

DrawDown: (1) a method of determining ink shade by placing a small amount of ink on paper and then using a spatula to spread it and produnce ink fi (2) The duartion of time required to remove air from a vacuum frame to allow the original film and the contact film to achieve uniform contact before exposure.

Durometer: (1) A measure of the hardnes of a roller surface, blanket surface, or squeeze blade. (2) Device used to measure hardness. in printing the shore A scale is used.

Vocabulary Day 166

mikewellls — Thu, 03 Jun 2010 18:30:32 +0000

Dampeners- Paper, cloth, or rubber covered rollers that distribute water to the printing plate in the lithographic process.

Discharge Printing- Pattern printing darkly dyed textile substrates with a color removing chemical to produce a design into which lighter hues may be printed.

Vocabulary Day 165

mikewellls — Wed, 02 Jun 2010 18:28:46 +0000

Common-Impression Press- A flexo or sheetfed or web offset press that has one large drum impression cylinder, which holds or supports the substrate and several color stations positioned around it.

Cutoff Length- 1. The distance between corresponding points of repeated images on a web.

2. The circumference of the plate cylinder.