Appeal No. 94-3960 Application 07/997,489 powder cloud in the development zone. See specification, page 2. In other words, this donor roll must be useful for electrophotographic printing or copying apparatuses. See specification, page 1. Claims 1 through 24 stand rejected under 35 U.S.C. § 103 as unpatentable over the combined teachings of the following references : 2 Babu et al (Babu) 4,718,972 Jan. 12, 1988 Akahoshi et al (Akahoshi) 4,876,177 Oct. 24, 1989 Greene et al (Greene) 5,171,608 Dec. 15, 1992 According to the examiner, the references relied upon disclose "the same sequence of steps" as claimed except for using a cylindrical substrate in those steps. See Answer, page 6. In so stating, the examiner fa iled to take into account the preambular limitation "a donor roll". See, e.g., Corning Glass Works v. Sumitomo Elec. U.S.A., 868 F.2d 1251, 1257, 9 USPQ2d 1962, 1966 (Fed. Cir. 2The examiner relies on the following new reference to further explain his position: Yuh et al (Yuh) 5,063,125 Nov. 5, 1991 3Page: Previous 1 2 3 4 5 6 NextLast modified: November 3, 2007