Patent EP0144056A2 successfully refreshed from Google Patents.
EP0144056A2
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EP
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An engagement mechanism for a developing means in an electrostatic copying machine
Assignee: Kyocera Mita Industrial Co Ltd
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Filing: 1984-11-27
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Granted: —
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Expires: 2004-11-27
Abstract
Abstract An engagement mechanism for a developing means (43) in an electrostatic copying machine, wherein an original image is guided to a photoreceptor (400) arranged on a rotary drum (41) via a focusing device (26), forming an electrostatic latent image on the photoreceptor (400) and the electrostatic latent image being positively changed into a toner image by the developing means (43), and the rotary drum (41) is supported in a freely rotatable fashion by the supporting member at the supporting frame body (5) which can be drawn out from a vertical front plate (18) of the copying machine body (1) and a contact surface (507, 508) controlling a horizontal position of the developing means (43) and a guide (505, 506) controlling a vertical position are provided at a fixed position of the supporting member, and furthermore the engagement member (509) rotatable to one direction from the standard position is provided movably toward the rotary drum (41) at the standard position with a constant impetus thereto separately from the supporting member and the developing means (43) is arranged movably toward the rotary drum (41) by engaging an engagement part formed at a fixed position of the engagement member (509) aforementioned with an engagement part formed at the fixed position of the developing means (43).
Inventors
- 👤 Eiji Tsutsui
- 👤 Masahiro Yoshioka
- 👤 Masahiro Murakami
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 04:36
CPC Classifications
G; G03; G03G; G03G21/00; G03G21/16; G03G21/18; G03G21/1803; G03G21/1817; G03G21/1825; G03G15/00; G03G15/06; G03G15/08; G03G15/0896; G03G21/1604; G03G21/1623; G03G2221/00; G03G2221/16; G03G2221/1651; G03G2221/1654; G03G2221/1678; G03G2221/1684; G03G2221/18; G03G2221/183; G03G2221/1853; G03G2221/1869
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
208 words
An engagement mechanism for a developing means in an electrostatic copying machine characterized in that an original image is guided to a photoreceptor (400) arranged on a rotary drum (41) via a focusing device (26), forming an electrostatic latent image on said photoreceptor (400) and positively changing the electrostatic latent image into a toner image by the developing means (43), a supporting part (501, 502) supporting the rotary drum (41) in freely movable fashion, a contact surface (507, 508) controlling a horizontal position of the developing means (43) and a supporting member having a guide (505, 506) which controls a vertical position are provided on a supporting frame body (5) which can be drawn out from a vertical front plate (18) of a copying machine body (1), whereas an engagement member (509) rotatable in one direction from the standard position and movable toward the rotary drum (43) in the standard position is arranged with a constant impetus thereto separately from the supporting frame body (5) and anengagement part which moves the developing means (43) toward the rotary drum (41) collectively by engaging with an engagement part arranged at a fixed position of the developing means (43) is provided on a fixed position on the engagement member (509) aforementioned.
Claim 2
Dependent Claim
208 words
An engagement mechanism for a developing means in an electrostatic copying machine characterized in that an original image is guided to a photoreceptor (400) arranged on a rotary drum (41) via a focusing device (26), forming an electrostatic latent image on said photoreceptor (400) and positively changing the electrostatic latent image into a toner image by the developing means (43), a supporting part (501, 502) supporting the rotary drum (41) in freely movable fashion, a contact surface (507, 508) controlling a horizontal position of the developing means (43) and a supporting member having a guide (505, 506) which controls a vertical position are provided on a supporting frame body (5) which can be drawn out from a vertical front plate (18) of a copying machine body (1), whereas an engagement member (509) rotatable in one direction from the standard position and movable toward the rotary drum (43) in the standard position is arranged with a constant impetus thereto separately from the supporting frame body (5) and anengagement part which moves the developing means (43) toward the rotary drum (41) collectively by engaging with an engagement part arranged at a fixed position of the developing means (43) is provided on a fixed position on the engagement member (509) aforementioned.
Claim 3
Dependent Claim
34 words
The engagement mechanism for the developing means in the electrostatic copying machine in accordance with the above claim 1, wherein the engagement member (509) is rotated toward a standard position by a manual operation.
Claim 4
Dependent Claim
39 words
The engagement mechanism for the developing means in the electrostatic copying machine in accordance with the above claim 1, wherein the engagement member (509) is rotated toward the standard position following a setting operation of the developing means (43).
Claim 5
Dependent Claim
44 words
The engagement mechanism for the developing means in the electrostatic copying machine in accordance with the above claim 3, wherein the engagement member (509) is rotated toward the standard position by a lever (516) actuated by the engagement part of the developing means (43).
Claim 6
Dependent Claim
84 words
The engagement mechanism for the developing means in the electrostatic copying machine in accordance with the above claims from 2 to 4, wherein the engagement member (509) includes a pivotal axis (513) and a control axis (514) which controls a pivotal action at intervals, whereby the control axis ( 514 ) engages with a hook side of a hook-shaped aperture (512) formed on a supporting wall (51) of the supporting frame body (5) and the pivotal axis (513) engages with the other side thereof.
Claim 7
Dependent Claim
56 words
The engagement mechanism for the developing means in the electrostatic copying machine in accordance with the above claims from 2 to 4, wherein a guided moving direction of the developing means (43) by the guide is in parallel with a moving direction of the engagement member (509) toward the rotary drum (41) at the standard position.
Claim 8
Dependent Claim
57 words
The engagement mechanism for the developing means in the electrostatic copying machine in accordance with either of the above claims from 2 to 4, wherein the guide comprises a concave groove (505, 506) extending horizontally and engages with a protruded plate portions (417, 418) formed at the front and rear surfaces of the developing means (43) slidably.
Claim 9
Dependent Claim
60 words
The engagement mechanism for the developing means in the electrostatic copying machines in accordance with the above claim 1, wherein a press-down control part (514a) which prevents a push-in operation by engaging with the fixed position on the copying machine body (1) at the rotation from the standard position, is formed at the fixed position of the engagement member (509).
Claim 10
Dependent Claim
68 words
The engagement mechanism for the developing means in the electrostatic copying machine in accordance with the above claim 8, wherein the press-down control part is formed at a rear supporting wall side (52) of the supporting frame body (5) and a hole (19a) for inserting through the press-down control part being formed at the standard position on a rear side plate (19) of the copying machine body (1).
Claim 11
Dependent Claim
84 words
The engagement mechanism for the developing means in the electrostatic copying machine in accordance with the above claim 8, wherein the press-down control part is formed at the rear supporting wall side (52) of the supporting frame body (5) which, when rotating from the standard position, may prevent the push-in of the supporting frame body (5) by engaging with a peripheral of an opening (19a) for inserting through the supporting frame body formed on the front side wall of the copying machine body (1).
Claim 12
Dependent Claim
45 words
The engagement mechanism for the developing means in the electrostatic copying machine in accordance with the above claims 9 or 10, wherein the press-down control part (514a) is protruded to the rear side of the rear supporting wall (52) of the supporting frame body (5).
Claim 13
Dependent Claim
42 words
The engagement mechanism for the developing means in the electrostatic copying machine in accordance with the above claims 9 or 10, wherein the press-down control part (514a) is formed at the end of the control axis (514) of the engagement member (509).
Claim 14
Dependent Claim
38 words
The engagement mechanism for the developing means in the electrostatic copying machine in accordance with the above claims 9 or 10, wherein the press-down control part (514a) serves also as a handle for rotating the engagement member (509).
References Cited (Backward Citations)
JPS58181058A
Cited
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