In 1977, Janoff worked for Regis McKenna as an art director and was tasked to design the logo for Steve Jobs of Apple Computer, creating an apple with a bite out of it, included so that people did not mistake the apple for a cherry or another fruit. The colored stripes in the logo were to indicate that Apple machines had color screens. Each stripe was printed in its own specially mixed color—at considerable extra expense which Jobs approved because he felt the more vivid colors improved people's emotional response. Rob also created ads and printed materials for Apple. The basic design of his Apple logo is still in use by the company today, but it has had many elements changed along the way. Later he did design work for both IBM and Intel.
Janoff was born and raised in Culver City, California.[better source needed] He obtained his degree from San Jose State University where he initially majored in industrial design. After later realizing that this was not the area of study he was particularly interested in, Janoff then focused on graphic design.
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In 1970, upon graduating from San Jose State University, Janoff began working for a number of small Silicon Valley agencies. In 1977, he joined Regis McKenna located in Palo Alto, California. During this position he was chosen to design the corporate identity package for Apple Computer.
Over the past six years he has established a digital agency with his Australian business partner, Joel Bohm.
While residing in Chicago, Rob Janoff travels extensively as part of his work creating branding outcomes for companies across a broad range of industries. He is also a speaker who has delivered keynote addresses and classes in design for universities and academic facilities, including the Eastern Mediterranean University in Cyprus.