公开(公告)号：DE2022718A1

公开(公告)日：1970-11-26

申请号：DE2022718

申请日：1970-05-09

Applicant: IBM

Inventor： ROBERT CLARKE FRANCIS ,  ERNEST HERRICK JUN CLIFFORD

IPC: G03G21/10 ,  G03G21/08 ,  G03G13/08

Abstract: 1281485 Electro-photographic copiers INTERNATIONAL BUSINESS MACHINES CORP 28 April 1970 [19 May 1969] 20215/70 Heading G2H After transfer of a developed image from a photo-conductive drum, residual developer is cleared therefrom by a brush 41, Fig. 1, or an air knife 101, Fig. 4; a lamp being provided at the cleaning station to illuminate the drum and disperse residual charge therefrom while the drum is being cleared. In Fig. 1, lamp 55 is mounted inside rotating brush 41, a vacuum cleaner 45, 47 drawing off developer particles. The construction of the brush and materials therefor are described in detail. In Fig. 4, a lamp 103 and air knife 101 are employed, developer particles being drawn off by suction through a housing 105.

公开(公告)号：DE1294808B

公开(公告)日：1969-05-08

申请号：DEI0028266

申请日：1965-06-02

Applicant: IBM

Inventor： WILLIAM POPE GEORGE ,  ROBERT CLARKE FRANCIS ,  RICHARD JURCH JUN GEORGE

IPC: G03C1/54

Abstract: 1,100,456. Photo-sensitive materials and processes. INTERNATIONAL BUSINESS MACHINES CORPORATION. May 10, 1965 [June 8, 1964], No. 19559/65. Heading G2C. A diazotype material comprises a support coated with a layer containing a 4-diazo-N-ethyl- N-benzyl aniline salt and a 4-N-morpholino-2, 5- diethoxybenzene salt. On imagewise exposure and development with ammonia or a primary or secondary amine, a coloured image is produced. A stabilizer such as citric, boric or oxalic acid may be present in the layer.