US253354A

US253354A - Geoege eastman

Info

Publication number: US253354A
Authority: US
Publication date: 1882-02-07
Anticipated expiration: 1899-02-07

Description

(ModeL) G. EASTMAN.

PHOTOGRAPHIG PAPER.

Paten ted' Feb. 7,1882.

Fig.

I UN TED STATES P TENT OFFICE.

GEORGE EASTMAN, OF ROCHESTER, NEW YORK.

PHOTOG'RAPHIG PAPER.

SPECIFICATION forming part of Letters Patent No. 253,354, dated February '7, 1882,

Application filed December 19, 1881.

To all whom it may concern:

Be it known that I, GEORGE EASTMAN, of

Rochester, Monroe county, New York, have in while the tendency which the sensitized sheets have to curl inward in consequence of having been rolled, or from being coated on one side only with chemicals, produces much annoyance to the printer in placing the sheets in the printing-frames, and is frequently the cause of blurred or defective prints, on account of want of contact between the paper and the negative.

My invention has for its object the prevention of the waste and the objections before mentioned, and the production of sensitized photographic paper in a form adapted to consumption without waste or loss of time 5 and it consists in preparing the paper for market in the form of pads or blocks of dimensions corresponding with the sizes of the negatives ordinarily used, the pieces of paper consituting the said pads being attached together at their edges, provided on one or both sides with a backing or stiffening, and inclosed in a suitable light-tight case or wrapper.

In the accompanying drawings, representing my improvement, Figure l is a perspective view of my improved pad of sensitive paper without the light-tight case or wrapper. Fig. 2 is an end view of the case. Fig. 3 is a side view, showing the pad and the inner part of the case. Fig. 4 is a longitudinal section through the pad and case. Fig. 5 is an exterior view of the case.

In the accompanying drawings, A represents the pad or block, composed of piecesof sensitized paper; B, the stiffening or backing; O, the inner, and D the outer, portion of the light-tight case.

In preparing photographic paper in accord- (Specimens) ance with my present improvement I take sensitized sheets in suflicient numbers {to make pads or blocks of the desired. thickness, and by means of any ordinary paper-cutting machine I cut the pile of sheets into pads or blocks of the proper sizes to correspond with the negatives in ordinary use.

The backing B, which is made of strawboard or other suitable material, and is applied to one or both sides of the pad, may be cut at the same time with the pile of sheets, or it may be applied to the pad after the cutting operation. The pieces consituting the pad are then glued or otherwise cemented together at their margins, preferably on two adjacent edges only, after which the pads are finished and prepared for market by being inclosed in a suitable lighttight wrapper." Pressure may be applied in any convenient way to the pads while the edges are drying, and after this has been done the any suitable wrapping or means of inclosure.

may be employed. Thus the prepared pad may be wrapped in an envelope of non-aetinic paper, either with or without an outer covering of metallic foil.

It is unnecessary to remark that the above operation should be carried on in a suitable non-actinic light.-

Photographic paper prepared in accordance with the directions contained herein will be found to possess superior keeping qualities, the access of air to the paper composing the pads being almost entirely prevented. The photographer buys sensitized paper of the exact size that he requires for making prints, thereby saving the time required to cut the large sheets into pieces suitable for his purposes, and the waste necessarily entailedin this operation.

The pieces of sensitized paper of sensitized paper, either to what is known in for photographers use composed of sheets of the trade as permanent silver paper, ferrosensitized photographic paper out to suitable prussiate paper, or gelatino-bromide paper. sizes glued at their margins, provided with a My improved pads may be made of any desuitable backing, and inclosed in a light-tight 15 5 sired thickness, containing any given number case or wrapper, substantially as and for the of pieces of sensitized paper. purposes described.

I hereby disclaim anythim shown or described in the patent of ReedfNo. 83,548, 00- GEORGE EASTMAN tober 27, 1868. Witnesses: to I claim H. G. PHILLIPS,

As a new article of manufacture, a package GEO. B. SELDEN.