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United States Patent [i9]
Shoji et al.
US005565961A [ii] Patent Number: [45] Date of Patent:
[54] PROCESS CARTRIDGE AND IMAGE
FORMING APPARATUS ADAPTED FOR THE
MOUNTING OF THE SAME THERETO
WITH AN ELASTIC MEMBER DISPOSED
THEREBETWEEN
[75] Inventors: Takeo Shoji, Yokohama; Yasushi
Shimizu, Tokyo, both of Japan
[73] Assignee: Canon Kabushiki Kaisha, Tokyo, Japan
[21] Appl. No.: 163,707
[22] Filed: Dec. 9, 1993
[30] Foreign Application Priority Data
Dec. 14, 1992 [JP] Japan 4-352906
Oct. 8, 1993 [JP] Japan 5-253056
[51] Int. CI.6 G03G 15/00
[52] U.S. CI 355/200; 355/210
[58] Field of Search 355/200, 210,
355/211, 212, 215
[56] References Cited
U.S. PATENT DOCUMENTS
4,335,950 6/1982 Gunzelmann et al 355/200
4,462,677 7/1984 Onoda 355/210
4,588,280 5/1986 Ogawa et al 355/200
4,609,276 9/1986 Mitzutani 355/210
4,941,015 7/1990 Komai et al 355/200
4,969,010 11/1990 Tamura et al 355/200 X
5,005,053 4/1991 Kozuka 355/200 X
5,061,959 10/1991 Kinoshita et al 355/210
5,083,158 1/1992 Kashima et al 355/200
5,086,316 2/1992 Aoki 355/200
5,095,335 3/1992 Watanabe et al 355/210
5,113,220 5/1992 Kwak 355/200
5,119,134 6/1992 Haneda et al 355/212
5,231,453 7/1993 Nakai et al 355/210
5,345,257 9/1994 Deguchi et al 355/200 X
Primary Examiner—A. T. Grimley
Assistant Examiner—Shuk Y. Lee
Attorney, Agent, or Firm—Fitzpatrick, Cella, Harper &
Scinto
[57] ABSTRACT
An image forming apparatus for forming images on recording media is adaptable to receiving a process cartridge detachably mounted thereto. The process cartridge has a frame, an image bearing member and a process unit which acts on the image bearing member. The image forming apparatus includes a mounting unit on which the process cartridge is mounted, and an elastic pressing member for elastically pressing against the frame of the process cartridge mounted on the mounting unit. The elastic pressing member may be mounted on the process cartridge.
24 Claims, 12 Drawing Sheets
