SU490072A1 - Reproduction camera - Google Patents

Description

one

In the well-known reproduction cameras with linear image scanning, designed for printing pa-k bot, exposure takes a long time and depends on the stability of the light flux given by the illuminator.

The image is not very accurate and the installation has a great height.

In the proposed device, this is eliminated by the fact that the kinematic scheme of its device ensures, during exposure, the swing around its horizontal axes of the planes of the original, the lens and the photoflow, during which these planes remain mutually parallel and the distances between them do not change, the centers of these planes remain on the horizontal straight line, the illuminator moves in front of the original along an arc of a circle, maintaining the same distance from the original as it swings.

FIG. 1 is a schematic diagram of the operation of the apparatus; in fig. 2-scheme of the scanning mechanism.

The original 1, the main plane 2 of the lens, the plane 3 of the photoflo and the illuminator 4 change their position as shown above (the numbers 1, 2, 3, and 4 without strokes show the position of the listed parts of the camera at the initial moment of exposure, digits G, 2, 3 and 4 in the middle of one exposure cycle and the numbers 1, 2, 3 and the end of one cycle of exhumation).

 The original, lens and photoflow are rotated relative to the horizontal axes 5, 6 and 7 (respectively) passing through their centers and perpendicular axes of the whole apparatus.

The swing axis 5 of the original shaft is supported on bearings fixed on the ends of the levers 8, the other ends of which are connected by an axle 9, which is supported on the carriage 10.

The axis 6 of the lens swing rests on bearings mounted on the carriage 11 of the lens.

The swing axis 7 of the photoflo rests on bearings mounted on the ends of the levers 12, connected to each other by the axle 13.

The swing axes of the original are directly fastened to the photollo with 14 and 15, which, using rollers 16 and 17, are connected by a rod 18, which is connected to the swing axis of the lens 6. When the original, the lens and the photoframe 14 and 15 are rotated during the exposure, keeping the perpendicular position to the rod 18 all the time, the original plane, object and photoflow are tilted so that they always remain parallel to each other, the distance between them unchanged, and the interleaving

The centers of these planes are made with sufficient accuracy. UO is horizontal straight forward.

1: jy64aTi.iii ksepoioiyy illumination 4 with off). M 1 W xx screalers from the rod: fc and with a swing during the orin exposure:; iii., A, the lens and the photo frame moves the PS of the first circle, and its distance from the plane the original remains constant.

To set the reproduction scale; 1 original carriage 10 and object carriage 11 ;; you move manually or with the help of an inverse (not shown). With JTOM, the rollers 16 with the coupling 20 and the coupling 21 on Cv.ii of the octoctisation move along the I-beam 18 and are fixed in the desired direction: o,:; the connectors with clamps {not shown in the drawing).

Sts;); :: Day 18 is brought to horizontal polosrenie, and levers 8 and 12 are attached to the initial angles of inclination for this instance of apiarat. To do this, cTu, j} K; i.e., 18 additional rollers 22 and 23 are reinforced, each of which, when the rod 18 is horizontally mounted, is located between the straight line,;.: The slats 24 or 25 and the curvilinear nanrasle:; 26 or 27, the radii of curvature of which are somewhat smaller, leivi 1) adius adjacent rollers.

i po: ue listed nodes reproduction ;;; . (the rotoannarat contains the drive of the scanning mechanism, not shown in the drawing, under iLiic euhbni to the I-beam 18, and zsr ;; al; 1st reversing system.

The sweep mechanism provides a large cicopocTb exposure and gives you the opportunity; . ;;: ocvb exposure for several repetitions 11; lo; d ;; xsl scanning cycles, providing; jT.ii: not depending on the exposure from the testabil ...; cgp light flux.

Subject invention

Claims (5)

1. Production photoantage for linear-scan polyrology. Images with movable orginal carriages and objects that are different),; that, in order to reduce the overall dimensions of the installation and optical elements, to speed up the new image accuracy, the plane of the original, lens and fotolos are aligned on horizontal, perpendicular smallpox so that they can swing while remaining parallel to each other and not changing the distances between them, with the swing axis of the original and the photofloor rigidly fastened to the directions that are connected to the rod with the help of the rollers Proposition parallel DOS anparata and opirayun1ims on obektnva axis. 2. The camera apparatus according to claim 1, characterized in that the swing axes of the planes of the original and the photoflo rests on paired levers having the ability to swing around other axes connecting each pair of levers so that the centers of the original, lens and photoframe on exposure remain at all times horizontal right my. 3. The photographic apparatus according to claim 1, characterized in that the tubular illuminator is rigidly fixed at one end of the I-bar, with which during the exposure it can pend along the arc of a circle without changing the distance from the moving and swinging original. 4. The photographic apparatus according to claim 1, characterized in that in places where the rollers are creased, the source and the main lens with an I-bar, along which they can move, are tracked. 5.Photoapparatus on PP. 1 and 4, characterized in that additional rollers are attached to the I-bar of the original on the photollo, the position of which, and the horizontal arrangement of the I-bar, are fixed adjacent to each of them are straight and curvilinear guides with radii of curvature of the latter smaller than the minimum radii of motion of the corresponding commercials. // i, t ; / five