Masking frame

Details Masking frame Masking frame

1979-11-14

1981-06-23

Wintercorn, Richard A.

Photocopying

Projection printing and copying cameras

Detailed holder for photosensitive paper

355126, G03B 2758

Patent

active

042747341

ABSTRACT:
A photographic masking frame is described in which there is a base plate and a raisable frame which holds the print material flat on the base when in the working position and which has an opening in it which is closable by a removable square mask formed in two portions. One of these portions is L-shaped and covers substantially three quarters of the area of the opening and the other of these portions is square and covers the remaining quarter of the opening. The removable mask as a whole can be lifted as a single unit and fits into a square recess of approximately the same dimensions which is made in the top surface of the raisable frame. The area of the recess is greater than the area of the aperture in the frame. The square portion of the mask is raisable without disturbing the L-shaped portion of the mask and overlaps the adjacent edges of the L-shaped portion of the mask and so renders the join light-tight.

REFERENCES:
patent: 2210279 (1938-03-01), Sloan
patent: 2246920 (1941-06-01), Kromholz
patent: 2348999 (1944-05-01), Peterson
patent: 2453431 (1948-11-01), Grover
patent: 2496701 (1950-02-01), De Groff
patent: 2589094 (1952-03-01), Konopka
patent: 2770165 (1956-11-01), Vriezelaar
patent: 3203334 (1965-08-01), Wilson et al.
patent: 3677638 (1972-07-01), Daugherty
patent: 4160597 (1979-07-01), Damm et al.

Affiliated with

Also associated with

Rating

Masking frame does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Masking frame, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Masking frame will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2205047