US2227110A

US2227110A - Photoprinting system and apparatus

Info

Publication number: US2227110A
Application number: US253058A
Authority: US
Inventors: Stuart Robert
Original assignee: Individual
Current assignee: Individual
Priority date: 1939-01-27
Filing date: 1939-01-27
Publication date: 1940-12-31
Anticipated expiration: 1957-12-31

Description

Dec. 31, 1940. I STUART 2,227,110

PHOTOPRINTING SYSTEM AND APPARATUS Filed Jan. 27, 1939 Fm" my.

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INVENTOR.

T'TORN E Y.

Patented Dec. 31, 1940 UNITED STATES PATENT OFFICE rao'rornmma srs'rmu AND APPARATUS Robert stun-t, Forest mm, Long Island, N. Y.

Application January 27, 1939, Serial No. 253,058

8 Claims. (Cl. 88-24) This invention relates to photoprinting systems and the apparatus used therewith, in which by optical projection documents are photographed on a band either iull size or on a.reduced scale and the operation may be reversed in which small photographs may be enlarged. The system relates to photoprinting wheels of the type shown in U. S.

Patent 2,081,187, May 25, 1937, in which the subjects to be photographed are continuously ted to 10 a rotating wheel and prints of these subjects are taken oil! on a continuous band as the wheel rotates. The apparatus comprises a rotating wheel having a plurality of radially spaced chambers,

. each one of which corresponds to a camera for producing the photographic print. The apparatus is particularly adapted for use where a time exposure in the printing operation is desired and which is determined by the speed oi operation of the printing wheel. The system may be applied to print on film but it is also adaptable for printing on photostatic paper.

The objects oi the invention and the detailed construction thereof will be more particularly understood from the following specification and the accompanying drawing, in which:

Fig. 1 is a sectional elevation of a form 01. printing wheel for reproducing documents that may be as large as the original, and

Fig. 2 is a plan view or the printing wheel shown in Fig. 1 with part 01 the cover removed and showing the paper feeding mechanism.

The photoprinting wheel shown in Figs. 1 and 2 is used for the reproduction of documents either full size or reductions of the original. This comprises a wheel made in two vertical sections and upon one oi the sections the documents to be photographed are applied by a conveyor belt and on the adjoining section a continuous paper band is provided which is optically connected with the g first section to print the document by a time exposure on the paper band.

The wheel is mounted on the stem 1 I, supported by the base 12 and is provided with a ball bearing at H. The wheel is rotated about the stem ll by the belt wheel" and belt 16 connected to motor II. A cover 8| is supported by the disc 82, fixed on the end of the stem ll. This cover encloses the light tube 83 which is provided with a reflector 88 and through the windows 85 in the cover, light lo from tube 83 is projected through the aperture 86 of the. top wheel upon the document 81 which is carried around the wheel by the conveyor belt 88. Through theoptical coupling 89 and the image of the document 81 is projected through the aperss ture 8| oi the lower wheel upon the sensitized paper band 91 and the exposure is continued during the portion of the revolution of the wheel that is represented by the light tube 88. A second light tube may be provided as indicated at 83a for illuminating the document 81. The printing wheel 5 is divided into radial compartments as indicated by the divisions 85a and the top compartment 18 is connected with the lower compartment I! by the light beam through the aperture 52 in the walls separating these two compartments. 10

Documents may be automatically ted to the top wheel from the tray 83 by the feeding mechanism delivering one of the sheets 94 to the conveyor belt 88, properly spaced to register with the printing apertures 86 in the top wheel. The document 15 is held in place against the conveyor belt 88 by the rollers 98.

This arrangement may be constructed to reproduce photographs corresponding in size with the original or the prints may be made larger or small- 20 er than the original by varying the diameter of the lower wheel and adjusting'the optical system accordingly. The paper band 92; after printing, is developed in the usual way. 1

Having thus described my inventiomI claim: 2

1. A system ior photoprinting comprising a rotating drum, a printing drum associated with said rotating drum each, or said drums divided radially into' sections, an aperture in the periphery oi each section of both drums, means for exposing a document at each aperture of said rotating drum,

a fixed annular light associated with each section of, the rotating drum ior illuminating the exposed documents, a photo-sensitized printing member in the apertures oi the printing drum and means 35 .optically connecting said drums to project the image of said documents on the sensitized member of the printing drum.

2. A system for photoprinting comprising s. rotating drum, a printing drum associated with said 40 rotating drum, each of said drums divided into corresponding radial sections, an aperture in the periphery of the drums for each section, means for exposing a document at each aperture of said rotating drum, a photo-sensitized member ex- 45 posed in each aperture of the printing drum,'an annular light associated with said rotating drum for illuminating the exposed documents and means optically connecting said drums to proiectthe image of said documents on the photo-sensitized 50 member.

3. A system for photoprinting, comprising a pair-"oi drums in axial alignment, one above the other, said drums divided into radial compartments with an aperture in the periphery for each 55 compartment, a window in the wall of each compartment, means for delivery documents to the first or said drums, one document to be exposed at each aperture in the periphery of said drum, a printing sheet exposed at each window 0! the other drum, a fixed source of light outside said drum arranged to illuminate the document at each aperture as the drum rotates, an optical system transferring the image oi! the document to the second drum and means ior projecting the image from the inside of the drum by reflection through an aperture in the periphery of the drum upon a printing sheet at the corresponding aperture.

4. A system for photoprinting, comprising a revolving drum with a printing drum attached thereto, said drums divided radially into sections, an aperture in the periphery 01' each drum, a window in the wall of each compartment 0! one of said drums, an annular light tube arranged to illuminate the apertures in the periphery through said windows as said drums revolve, means for supplying documents to said drum located one in each aperture, a sensitized band applied to the printing drum and an optical system for printing the picture of the document in each compartment on said band.

5. A system for photoprinting comprising a pair of drums in axial alignment, said drums being divided radially into compartments and said compartments in one drum being located in register with the compartments in the other drum, an aperture in the periphery of each compartment, a window in the side wall of each compartment of one drum, a fixed annular light tube in register with said windows, the documents to be photoprinted being placed in the apertures of the compartments illuminated by said tube, semitized paper being placed in the apertures oi the other 'drum, and optical means for transferring, by redrum divided radially into compartments with an aperture in the periphery 01' each compartment, windows in the side of each compartment, a fixed annular light tube in register with said windows for illuminating the apertures, documents to be photographed placed in said apertures, sensitized paper for each aperture mounted to rotate with said drum and optical means for transferring, by reflection, the image of the document in each compartment and printing same on said sensitized paper as the drum rotates.

7. A system for photoprinting, comprising a fixed stem, 8. pair 0! drums rotatably mounted on said stem, means for rotating said drums, said drums being divided radially into compartments, one above the other, means for mounting documents on the periphery of one drum with the side to be printed exposed from the inside of the drum, means for mounting sensitized paper on the periphery of the other drum with the sensitized side exposed from the inside of the drum, windows in the side 0! the drum having the documents, an annular light tube supported by said stem in fixed relation to said drum for illuminating said documents, and optical means for transferring the image of the document and printing same upon the sensitized paper as the drums rotate.

8. A system ior photoprinting, comprising a fixed stem, a pair of drums rotatably mounted on said stem, said drums being divided radially into compartments, one above the other, means for mounting documents on the periphery of one drum with the side to be printed exposed from the inside or the drum, means for mounting sensitized paper on the periphery of the other drum with.

the sensitized side exposed from the inside of the ROBERT STUART.