The cyanotype process or blue printing was discovered by Sir John Herschel in 1842. Ifs first extensive use was in a book of botanical photograms of British algae by Anna Atkins. Around the turn of the century prepared blueprint paper was available to photographers for making proofs. The process was also used to produce postcards and stereographs of the period. The process never gained any real popularity and so was primarily used as a copying process (as engineers and architects do now). 8230;
The cyanotype printing process , commonly known as 8216;Blue Print8217;, was invented in 1842 by the English astronomer Sir John Herschel, who wanted to create a method by which he could copy or reproduce his calculations and notes. It is one of the oldest and most permanent printing processes. Because this process is simple, inexpensive, and has clear line-production, it plays an important role in the industrial field today as a method of reproducing documents and line drawings. In addition it was also popular among photographers8230;
Hato Press is a print and publishing house which runs a Risograph RP 3700 stencilduplicator. The risograph covers a gap in the market that has been held by digital and lithograph printing.
We apply this printing process to the production of artist publications, invites, flyers, posters, illustration prints and zines, though it was traditionally used for high volume printing and photocopying in schools, churches and small political parties.
Our main press is a Risograph RP 3700 stencil duplicator. Traditionally, Risographs have been used for high volume photocopying in schools, churches and small political parties. We have customized the process for the production of artist publications, invites, flyers, posters, illustration prints and zines.
Many of the books we produce not only make use of risograph printing but also letterpress, screen printing and offset lithography.
The development time determines the amount of shadow detail. As the development progresses, dark grains begin to appear in the shadow areas, clumping together to form the darkest regions of the print. It is important to decide when to snatch the print from the developer by Judging the shadow density 8211; rather than the highlight detail. 8230; In order to make successful lith prints you must use a chloro-bromide based black and white paper. 8230;
Good tones are obtained with normally exposed and developed conventional paper prints. Some modern papers even those described as 8216;fibre8217; are liable to give variable results and 8216;blotches8217;. It is recomended that prints are given full exposure, and development, an acid stop, fixed in a simple non hardening fixer, and copiously washed. Work only under subdued lighting. 8230;