Browse Prior Art Database

Video Expose System

IP.com Disclosure Number: IPCOM000121864D
Original Publication Date: 1991-Oct-01
Included in the Prior Art Database: 2005-Apr-03
Document File: 2 page(s) / 58K

Publishing Venue

IBM

Related People

Burbank, DW: AUTHOR [+2]

Abstract

Disclosed is a low-cost method for photo-tool line-up in the printed circuit board industry. The use of an X-Y system, camera, and monitors is required to obtain the necessary results in photo-tool line- up. The use of this system provides the capability to consistently line up the photo-tools to panels and, therefore, greatly reduces or completely eliminates the scrap caused by this operation in the manual mode.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 72% of the total text.

Video Expose System

      Disclosed is a low-cost method for photo-tool line-up in
the printed circuit board industry.  The use of an X-Y system,
camera, and monitors is required to obtain the necessary results in
photo-tool line- up.  The use of this system provides the capability
to consistently line up the photo-tools to panels and, therefore,
greatly reduces or completely eliminates the scrap caused by this
operation in the manual mode.

      The video expose system (VES) (see the figure) is a
camera/monitor in conjunction with an X-Y rail 1 system which was
mounted on a PC Photo Printer.  The photo printer has a registration
system already incorporated into the expose table.

      With the camera in the far back left position (park position)
2, the panel 3 and specially punched photo tool 4 are pinned to the
expose table.  The photo tool is located on fixed pins 5 at the top
of the expose table while the panel is located on the movable tooling
pin tabs 6 on the bottom of the expose table.  A rough line-up is
done on the first panel and then the photo-tool and tooling pin tabs
are secured (which are fixed for the duration of the expose
operation).

      The panels are placed on the secured tooling pin tabs, and the
approximate line-up is determined with the camera/monitor.  The thumb
wheels 7 are used to get a close line-up of the holes to the photo-
tool pads.  Once this is done, the vacuum is drawn and the
registration is checked again.  A d...