Electrophotography – Diagnostics – Document handling
Patent
1996-03-07
1997-08-05
Ramirez, Nestor R.
Electrophotography
Diagnostics
Document handling
399124, 399402, G03G 2100
Patent
active
056551738
ABSTRACT:
An image forming apparatus has a jam sensor for detecting a jammed sheets in a transporting path, a paper guide which can be switched between a close state that guides sheets to an image forming section and an open state that make a jammed sheet removable, a movable backward end plate which is provided on an ADU tray and regulates a position of stored sheets according to the size of sheet, and a pulse motor that moves the movable backward end plate. When the paper guide is converted to the open state, an interference section where the movable backward end plate contacts with the paper guide and a non-interference section are formed. The image forming apparatus is provided with a CPU which drives the pulse motor so as to move the movable backward end plate to the non-interference section based upon a jam detecting signal from the jam sensor. As a result, even when the ADU tray is provided to a position where the movable backward end plate interferes with the paper guide, the paper guide can be brought to the open state while contact between the paper guide and the movable backward end plate is being avoided. Therefore, the apparatus can be small and its cost can be decreased.
REFERENCES:
patent: 4734744 (1988-03-01), Yamamoto
patent: 4849796 (1989-07-01), Murakami
patent: 4864368 (1989-09-01), Muramatsu
patent: 5134443 (1992-07-01), Sumi et al.
patent: 5191383 (1993-03-01), Watanabe
patent: 5293203 (1994-03-01), Wada et al.
Hirai Masashi
Yamauchi Hirokazu
Ramirez Nestor R.
Sharp Kabushiki Kaisha
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