EP0116976A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Electrostatic copying apparatus comprising pivotably movable shells
Assignee: Kyocera Mita Industrial Co Ltd
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Filing: 1984-02-21
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Granted: —
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Expires: 2004-02-21
Abstract
Abstract A shell-type electrostatic copying apparatus comprising a lower supporting frame (102), an upper supporting frame (104) mounted on the lower supporting frame (102) for free pivotal movement between an open position and a closed position, and a unit which includes a unit frame (138) and a rotating drum (12) mounted rotatably on the unit frame (138) and is adapted to be detachably mounted on the upper supporting frame (104). A provisional unit placing means (210) is provided in the lower supporting frame (102) for supporting the unit frame (138) movably. The unit is mounted detachably on the upper supporting frame (104) by placing the unit on the provisional unit placing means (210), pivoting the upper supporting frame (104) from the open position to the closed position and then moving the unit in a specified direction.
Inventors
- 👤 Hiroshi Kajita
- 👤 Tadanobu Nakajima
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 09:23
CPC Classifications
G; G03; G03G; G03G21/00; G03G21/16; G03G21/1604; G03G21/1623; G03G21/1628; G03G2221/00; G03G2221/16; G03G2221/1651; G03G2221/1654; G03G2221/1657; G03G2221/1678; G03G2221/1687; G03G2221/18; G03G2221/183; G03G2221/1853
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
550 words
A shell-type electrostatic copying apparatus comprising a lower supporting frame, an upper supporting frame mounted for free pivotal movement between an open position and a closed position about a pivoting axis extending in the front-rear direction as a center, said upper supporting frame having a vertical front base plate and a vertical rear base plate spaced from each other in the front-rear direction, and a unit detachably mounted on the upper supporting frame, said unit including a unit frame having a front and a rear wall spaced from each other in the front-rear direction and a rotating drum rotatably mounted on the unit frame, wherein a provisional unit placing means (210) for supporting the unit frame (138) of said unit for free movement over a predetermined range in the front-rear direction is provided in the lower supporting frame (102); one of the front wall of the unit frame (138) and the vertical front base plate (116) of the upper supporting frame (104) has formed therein at least two laterally spaced engaging openings (204), and the other has formed therein at least two laterally spaced engaging projections (208), and at least one of the rear wall (136) of the unit frame (138) and the vertical rear base plate (118) of the upper supporting frame (104) has formed therein at least two laterally spaced engaging projections (202) and the other has formed therein at least two laterally spaced engaging openings (206), and a restraining means (216) is provided for releasably restraining the movement of the unit frame (138) in the front-rear direction with respect to the upper supporting frame (104), when the unit frame (138) is provisionally placed at a predetermined provisional placing position on the provisional unit placing means provided on the lower supporting frame (102) and the upper supporting frame (104) is pivoted from the open position to the closed position, the engaging openings (204) formed in one of the front wall (134) of the unit frame (138) and the vertical front base plate (116) of the upper supporting frame (104) are brought into alignment in the front-rear direction with the engaging projections (208) formed in the other and the engaging projections (202) formed in one of the rear wall of the unit frame (138) and the vertical front base plate of the upper supporting frame (104) are brought into alignment in the front-rear direction with the engaging openings (206) formed in the other, when in the next place the unit frame (138) is moved rearwardly or frontwardly from the provisional placing position to a mounting position, the engaging openings (204) formed in one of the front wall of the unit frame (138) and the vertical front base plate (116) of the upper supporting frame (104) are engaged with the engaging projections (208) formed in the other and the engaging projections (202) formed in one of the rear wall (136) of the unit frame (138) and the vertical rear base plate (118) of the upper supporting frame (104) are engaged with the engaging openings (206) formed in the other, and when thereafter the movement of the unit frame (138) in the front-rear direction with respect to the upper supporting frame (104) is releasably restrained by the restraining means (216), the unit is detachably mounted on the upper supporting frame (104).
Claim 2
Dependent Claim
550 words
A shell-type electrostatic copying apparatus comprising a lower supporting frame, an upper supporting frame mounted for free pivotal movement between an open position and a closed position about a pivoting axis extending in the front-rear direction as a center, said upper supporting frame having a vertical front base plate and a vertical rear base plate spaced from each other in the front-rear direction, and a unit detachably mounted on the upper supporting frame, said unit including a unit frame having a front and a rear wall spaced from each other in the front-rear direction and a rotating drum rotatably mounted on the unit frame, wherein a provisional unit placing means (210) for supporting the unit frame (138) of said unit for free movement over a predetermined range in the front-rear direction is provided in the lower supporting frame (102); one of the front wall of the unit frame (138) and the vertical front base plate (116) of the upper supporting frame (104) has formed therein at least two laterally spaced engaging openings (204), and the other has formed therein at least two laterally spaced engaging projections (208), and at least one of the rear wall (136) of the unit frame (138) and the vertical rear base plate (118) of the upper supporting frame (104) has formed therein at least two laterally spaced engaging projections (202) and the other has formed therein at least two laterally spaced engaging openings (206), and a restraining means (216) is provided for releasably restraining the movement of the unit frame (138) in the front-rear direction with respect to the upper supporting frame (104), when the unit frame (138) is provisionally placed at a predetermined provisional placing position on the provisional unit placing means provided on the lower supporting frame (102) and the upper supporting frame (104) is pivoted from the open position to the closed position, the engaging openings (204) formed in one of the front wall (134) of the unit frame (138) and the vertical front base plate (116) of the upper supporting frame (104) are brought into alignment in the front-rear direction with the engaging projections (208) formed in the other and the engaging projections (202) formed in one of the rear wall of the unit frame (138) and the vertical front base plate of the upper supporting frame (104) are brought into alignment in the front-rear direction with the engaging openings (206) formed in the other, when in the next place the unit frame (138) is moved rearwardly or frontwardly from the provisional placing position to a mounting position, the engaging openings (204) formed in one of the front wall of the unit frame (138) and the vertical front base plate (116) of the upper supporting frame (104) are engaged with the engaging projections (208) formed in the other and the engaging projections (202) formed in one of the rear wall (136) of the unit frame (138) and the vertical rear base plate (118) of the upper supporting frame (104) are engaged with the engaging openings (206) formed in the other, and when thereafter the movement of the unit frame (138) in the front-rear direction with respect to the upper supporting frame (104) is releasably restrained by the restraining means (216), the unit is detachably mounted on the upper supporting frame (104).
Claim 3
Dependent Claim
19 words
The apparatus of claim 1 wherein the unit includes a developing device (30) mounted on the unit frame (138).
Claim 4
Dependent Claim
33 words
The apparatus of claim 1 wherein the lower supporting frame (102) has a vertical front base plate (108) and a vertical rear base plate (110) spaced from each other in the front-rear direction.
Claim 5
Dependent Claim
82 words
The apparatus of claim 3 wherein the provisional unit placing means is comprised of at least two supporting pins (210) implanted at laterally spaced positions in the rear surface of the vertical front base plate (108) and at least two supporting pins (210) implanted at spaced intervals in the front surface of the vertical rear base plate (110) of the lower supporting frame (102), and the front wall and the rear wall of the unit are placed on the supporting pins (210).
Claim 6
Dependent Claim
88 words
The apparatus of claim 3 wherein at the provisional placing position on the provisional unit placing means, at least a part of the front surface of the front wall of the unit frame (138) or at least a part of the rear surface of the rear wall (136) of the unit frame (138) abuts against the rear surface of the vertical front base plate (108) of the lower supporting frame (102) or the front surface of the vertical rear base plate (110) of the lower supporting frame (102).
Claim 7
Dependent Claim
190 words
The apparatus of claim 3 wherein when the unit is to be placed on the provisional placing means, at least a part of the front surface of the front wall of the unit frame (138) or at least a part of the rear surface of the rear wall (136) of the unit frame (138) abuts against the rear surface of the vertical front base plate (108) of the lower supporting frame (102) or the front surface of the vertical rear base plate (110) to restrain one side of the unit frame (138), and at least one engaging projection (202, 208) formed in one of the rear wall (136) of the unit frame (138) and the vertical rear base plate (118) of the upper supporting frame (104) or in one of the front wall of the unit frame (138) and the vertical front base plate (116) of the upper supporting frame (104) abuts against the front surface of the vertical rear base plate (118) of the upper supporting frame (104) or the rear surface of the vertical front base plate (108) to restrict the other side of the unit frame (138).
Claim 8
Dependent Claim
76 words
The apparatus of claim 1 wherein at the mounting position, at least a part of the rear surface of the rear wall (136) of the unit frame (138) or at least a part of the front surface of the front wall abuts against the front surface of the vertical rear base plate (118) of the upper supporting frame (104) or the rear surface of the vertical front base plate (116) of the upper supporting frame (104).
Claim 9
Dependent Claim
66 words
The apparatus of claim 1 wherein a groove (222) is formed in that projecting portion (202) which projects through at least one (206) of the engaging openings, and the restraining means is constructed of a restraining member (218) adapted to be releasably anchored in said groove (222) to restrain the movement of the engaging projection (202) with resepct to the engaging projections in the front-rear direction.
References Cited (Backward Citations)
No citation records indexed.
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