AMK Positive Offset plates are designed to meet the highest expectations in printing quality and reproduction. Our modern production facilities, in conjunction with extensive raw material tests and strict quality control assure the well known characteristics of AMK Offset plates. Both the P-1010 (available only in 0,15mm. thickness) and P-1020 positive offset plates are electro-chemically grained and anodized in our state of the art production line. These plates are especially suitable for Sheet-Fed and Web Offset printing, from long to very long runs.


QUALITY STANDARDS

• Heavy duty press plate from long to very long runs.
• Strong color change after exposure.
• Very short exposure time.
• Dark coating color for high contrast after development and easy plate scanner reading.
• Trouble free water balance and good coating adhesion.
• Resolution of 2% - 98%.
• Constant high fidelity of printed images with very good tone reproduction, even with fine screens.

EXPOSURE

• AMK positive plates can be exposed with all commonly used metal halide or UV lamps emitting light in the wavelength range of 350 – 450nm.
• In order to determine the correct exposure time, it is recommended to use plate control wedges such as, UGRA 1982, STOUFFER 21 Step or similar.
• Recommended reproduction results using UGRA 1982 wedge are as follows: Gray scale-continuous tone with steps no. 4-5 clear. Microlines: 8 -10 microns.

Reference: Power 5000W at 120cm. The correspondent energy is 1,8 – 2,0mW/cm². Exposure about 18-20 seconds in order to obtain step 4-5 gray (UGRA / SOUFFER).

DEVELOPMENT

• Although AMK positive plates can be developed with all types of universal positive developers, for optimal results AMK PD-5030 1+4 or AMK PD-5090 1+9 Concentrate Positive Plate Developers are highly recommended.

  Developer Temperature:	Manual: 20-22ºC
  	Machine: 20-24ºC
  Development Time:	Manual: 40-50 sec.
  	Machine: 20-30 sec.

DELETION

• Deletion pens, pastes, or gels can be used to eliminate unwanted images on the plate.
• Apply AMK Image Remover Paste or Image Remover Pen on to the unwanted image of the dry plate and leave for about 10sec. before rinsing and wiping the plate thoroughly with a damp sponge.
  

GUMMING

• It is recommended that the plates are protected with AMK Genuine Gum Arabic or AMK Synthetic Gum. All gums should be removed before starting to print in order to ensure rapid ink-water balance.

PRINTING

• P-1010 and P-1020 plates usually need no special handling on the press and can be used with isopropyl alcohol or conventional dampening systems.
• Although excessive use of the solvent base of plate cleaners can damage the image and reduce print capacity, AMK-2000 Plate Cleaner can be used as a preparation for the background areas prior to starting the print.
• AMK powder or liquid Fountain Solution is recommended for all sheet-fed and web-offsets. Compatible fountain solution of competitors can be used as a replacement. Recommended pH range is 4 - 4,5.

AVAILABLE THICKNESSES

• 0,15 / 0,20 / 0,25 / 0,30 / 0,40mm.