The phrase "several imprints" refers to multiple copies or versions of something, typically a book or publication, that have been created by a publisher. Full definition
They have become a traditional publisher as well, with several imprints under their banner ranging from romance (Montlake Romance) to mystery (Thomas & Mercer) to science fiction (47North) to international (AmazonCrossing). (readingreality.net)
Amazon Publishing has several imprints under its label, including Montlake for romance, 47North for an eclectic mix of urban fantasy, and Thomas & Mercer for mystery and thriller; Amazon Publishing also contains two other imprints, Amazon Encore and Amazon Crossing. (goodereader.com)
Last week Penguin Random House announced the sale of beleaguered Author Solutions, the large (but seemingly getting smaller) vanity press that is known by several imprint names in the publishing industry including Xlibris, AuthorHouse, iUniverse, Trafford and WestBow Press. (authorimprints.com)