Lexxietrejo's Blog

June 15 2010 Vocabulary

lexxietrejo — Tue, 15 Jun 2010 16:13:14 +0000

OSCILLATOR:A driven inking or dampering roller that not only roates but also moves from side o side. descributeing erasing image paterns from the form roller. Alternative terms oscillating drum oscillating roller or vibrator.

OVERPACKING:Packing the plate or blanker to a level that eccessively above the level of the cylinder bearer.

june 14 2010 vocabulary

lexxietrejo — Mon, 14 Jun 2010 16:13:14 +0000

HOLLETON: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 few hours or less.Often asspciated with very short runs of a hundred or fewer pieces and the use of a digital printing press.

June 11th 2010 Vocabulary

lexxietrejo — Fri, 11 Jun 2010 16:51:16 +0000

METALLIC INK: An ink with fine aluminum bronze or copper powders in it pigment

METERING NIP:the line of contact between two rollers in the damping system of a lithographic press.

June 10th 2010 Vocabulary

lexxietrejo — Thu, 10 Jun 2010 16:20:23 +0000

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

HICKEY-PICKING ROLLER:A roller that has 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.

June 9th 2010 Vocabulary

lexxietrejo — Thu, 10 Jun 2010 16:12:27 +0000

INCLINE PRESS:a screen printing press in which the screen maintains a position papalel to the printing bed,but recedes diagonally during the feed/take off cycle.

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

June 8th 2010 Vocabulary

lexxietrejo — Tue, 08 Jun 2010 16:16:11 +0000

FRONT STOPS: a series of devices that halt the forward movement of a press sheet on the feed board.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

GEAR STREAKS:Parallel streak appearing across the printed sheet at the same interval as gear teeth on a cylinder.

june 7th 2010 Vocabulary

lexxietrejo — Mon, 07 Jun 2010 16:14:49 +0000

ECCENTRICITY: a roller or cylinder that does not rotate in a true concentric circle in relation to its axis

Alternative terms: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 sheet

june 2nd 2010 Vocabulary

lexxietrejo — Wed, 02 Jun 2010 16:15:37 +0000

COMMON-IMPRESSION PRESS:a flexco or sheetfed or web offset oress that has one large drum impression cylinder which holds or supports the substrate and several color stations positioned around it.

CUTOFF LENGTH:The distance between corresponding points of repeated images on a web.

The circumference of the plate cylinder

Vocabulary june 1st

lexxietrejo — Tue, 01 Jun 2010 16:16:17 +0000

Cobwebbing

(1)fine filaments of ink that appear between the screen fabric and the sybstateduring screen printing.

(2) in gravure,a fulmy buildup of dried ink on the doctor blade the ends of impression rol,or printing cylinder.

Comber

a press or folder component that fans the sheets to imprve seperation and feeding accuracy.

05.20.10Vocabulary

lexxietrejo — Thu, 20 May 2010 16:21:15 +0000

vocabulary

ACID: (1) in lithography ,a dampening solution ingradient that enables gum arabic to cling to the nonimage areas of the plate.

(2)Perchloride of iron used to etch gravure cylinders.Alternative term:etchant.

ANTIFOAMING AGENT: An additive that disaperses bubbles that may form in ofset dampening solution or screen printing inks during printing. Antifoaming agents are also added to plate developers and processors