公开(公告)号：CA1187026A

公开(公告)日：1985-05-14

申请号：CA408726

申请日：1982-08-04

Applicant: IBM

Inventor： ALDRICH CHARLES S

IPC: B41J35/22 ,  B41J32/00 ,  B41J33/14 ,  B41J35/14 ,  B41J35/20 ,  B41J35/23

Abstract: RIBBON LIFT AND FEED MECHANISM FOR A TYPEWRITER A ribbon lift and feed mechanism for a typewriter/ printer (10) in which the print ribbon cartridge (15) has deflectable arms (16a, 16b) for placing the ribbon (13) in a position confronting the platen (11) of the typewriter (10). On the platform (40), supporting the ribbon cartridge (15), is a shuttle (50) which is remotely oscillated as by a drive motor (90) on the frame (12) of the typewriter (10). Translation of the shuttle (50) and the cam (66) associated with the shuttle (50) effects movement of cam follower (66a) engageable with the cam (66), causing the deflectable arms (16a, 16b) of the cartridge (15) to oscillate between a rest and elevated position to place different portions of the print ribbon (13) intermediate the type element (23) and the platen (11). The shuttle (50) also carries ribbon feed drive means (85) which cause an incremental feed of the ribbon (13) after the ribbon has been struck at multiple elevated positions. Moreover, by placing a correction ribbon cartridge (30) beneath the ribbon cartridge (15), another cam (70) on the shuttle can effect platform (40) elevation when it is desired to dispose the correction ribbon (30) intermediate the printing element (23) and the platen (11). This action occurs as a result of the oscillation of the shuttle (50).

公开(公告)号：CA2018500A1

公开(公告)日：1991-02-11

申请号：CA2018500

申请日：1990-06-07

Applicant: IBM

Inventor： ALDRICH CHARLES S ,  APPLEGATE STEVEN L ,  CRAFT JAMES A ,  MOLLOY JAMES J ,  PAWLEY MICHAEL L

IPC: G03G15/08

Abstract: A developer apparatus (29) for use in an electrostatic reproduction apparatus includes a large reservoir of toner (34, 44). The toner is located in a supply chamber (39) and is metered to a developer roller chamber (35) from which it is carried by a developer roller (31) past a doctor blade (36) to a photoconductor drum (19) for image development. A toner metering roller (41) rotates with the developer roller (31) to provide a continuous supply of toner from the supply chamber (39) to the developer chamber (35). Once an equilibrium level (65) is reached, the toner metering roller (41) acts to remove toner (34) from the developer chamber (35) to the supply chamber (39) to insure proper operation of the developer roller (31).