Angled Exposure System
stencil processing
screen printing
Angled Exposure System
Angled Exposure System
of 2

Natgraph Angled Exposure System

Published on: Mar 3, 2016

Transcripts - Natgraph Angled Exposure System

  • 1. EQUIPMENT SOLUTIONS Angled Exposure System stencil processing screen printing air force ultra violet infra red Natgraph have introduced the Angled Exposure This improves light distribution and lowers glass System to meet the demands of a changing industry temperature therefore improving definition and by combining a standard stencil exposure machine reducing film positive distortion. with the ability to also expose Computer to Screen Available in 3 standard sizes, with a variety (CtS) photo stencils produced with wax jet or ink of light sources, this system will accept a wide jet applied positive images. In developing this range of frame sizes. All models include a PLC new concept, Natgraph have designed a unit that based operating system giving the operator full overcomes the problems experienced in high quality control of all parameters and automatic operation, and high volume photo stencil processing. allowing better use of manpower within the stencil This unit is the ultimate in fully automatic operation, department. with touch screen control of every aspect of the For industrial, graphic and textile applications this is process that can be saved to memory for instant the ultimate exposure system capable of exposing re-call. The sloping design of the glass allows easy all types of photo stencil automatically in the loading/unloading and reduces the possibility of minimum of floor-space to the highest quality and scratching the glass. It also allows the Metal Halide consistency. Angled Exposure System Light Source to be positioned further away from the Closed stencil than in conventional enclosed systems. Angled Exposure System Natgraph Limited, Dabell Avenue, Blenheim Industrial Estate, Nottingham NG6 8WA, United Kingdom Tel: +44 (0)115 979 5800 Fax: +44 (0)115 979 5700
  • 2. Angled Exposure System Angled Exposure System Features • Pneumatic lifting of rubber and glass • Fully Automatic Touch Screen Control frames • Integrated Exposure Control • Rapid Start or Automatic Shutter option • Exposes CtS wax or ink jet stencils • Two vacuum pumps • Angled glass for easy load/unload • Automatic bleed • Adjustable vacuum times • Inspection light The Natgraph range of Angled Exposure Systems In standard exposure mode, the rubber frame is have been developed to increase productivity in the lowered via the touch screen by the twin pneumatic Touch screen operation busy stencil processing department as well as being cylinders and the process begins, the two vacuum flexible enough to expose CtS stencils in a controlled pumps operate to give a quick ‘pull down’ to a environment and ensure consistent image quality. high vacuum, the light source is then energised. This fully enclosed design allows easy loading and The exposures are controlled by a light integrator unloading of screen frames whilst reducing the incorporated into the PLC control system. Each possibility of accidental glass scratching. exposure is energy dependent and so consistent exposures are guaranteed, each and every time. The distance between the wide angle reflectors of At the end of the exposure the light source switches the Metal Halide Light Source and the toughened off, the vacuum is automatically vented and the glass is increased using this design and so light rubber frame rises. distribution is improved whilst reducing the heating effect. The main exposure chamber is also vented, Exposure and vacuum times for all types of photo so the glass temperature is lower than conventional emulsions can be put into the memory function for Fully automatic self contained systems with horizontal glass. This instant recall, thus ensuring consistent exposures. reduces film positive distortion. Two UV safe inspection lights are installed for checking alignment of screen frames etc. The PLC An optional glass temperature monitor and records lamp life and constantly checks lamp output. refrigeration unit can be incorporated into the units control system to guarantee glass temperature in the Metal Halide Light Sources from 4/6kW to 8kW most demanding of environments. with Natgraph’s Rapid Start system or Automatic Shutter systems are fitted depending upon In CtS exposure mode, the glass frame is application and model size. The light sources can automatically latched to the rubber frame and rises be fitted with either Diazo (420nm) or Photopolymer with it to allow access to the sliding screen frame (365nm) lamps. support bars. The exposure is controlled in the normal way, with the unit fully closed and the wax These units require a three phase power and Easy access for jet or ink jet printed stencil exposed directly to the compressed air supply to operate. maintenance light source. Model 3 4 5 Maximum Frame Size 127 x 171cm (50” x 67”) 173 x 230cm (68” x 90”) TBC Height 188cm (74”) 219cm (86”) TBC Width 221cm (87”) 280cm (110”) TBC Depth 165cm (65”) 195cm (76”) TBC Weight 675Kgs. (1488lbs) 925Kgs. (2039lbs) TBC Voltage Three Phase 400 Volts 50/60Hz AC Power 8.5kW Current 38 Amps Compressed Air 5 bar/7 litres/minute Distributed by: Download our brochures at 2 of 2 05 The manufacturer’s policy is one of continuous improvement and the manufacturer therefore reserves the right to change or modify the design without prior notice. The technical specifications given are therefore for information only.

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