ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,443,121, issued on Oct. 14, was assigned to Sharp K.K. (Sakai, Japan).
"Image forming apparatus" was invented by Naruhito Geshi (Sakai, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An image forming apparatus includes a primary transfer unit 42 that is attachable and detachable. The primary transfer unit includes a contact and separation mechanism 62 that causes primary transfer rollers 60 to come into contact with and separate from photoreceptor drums 36. The contact and separation mechanism includes a plurality of arm members 76, a link member 78, a cam member 80, and a first grip 92. In the contact and separation mechanism, the cam member rota...