How to OCR a combined file of scanned text without reducing size of text?

I scan a bunch of text in large images (each image has ~1500 words)
I combine the images in acrobat. - They are very high resolution and easy to read. 

I scan/ocr, then recognize the text. 
When I am done, it has reduced the size of the images by 1/4 - making them low resolution and difficult to read as images in a pdf. 

(note - the OCR is fine, it is the actual image of the text that is the problem). 

How to do keep the original size/resolution when I run the OCR - Regognize text?