IMAGE FORMING APPARATUS
First Claim
Patent Images
1. An image forming apparatus comprising:
- a photoreceptor for forming an electrostatic latent image thereon in accordance with image data and visualizing the electrostatic latent image with toner;
a charger for electrifying the photoreceptor at a predetermined potential in order to form the electrostatic latent image;
a photoreceptor positioning member for positioning the rotary axis of the photoreceptor;
a duct part formed integrally with the photoreceptor positioning member to form a duct that conveys air flow for discharging air from the vicinity of the charger; and
,a fan for generating the air flow,characterized in thatthe photoreceptor positioning member and the duct part are formed with an opening at the position opposing the charger, and,the opening enables air around the charger to flow into the duct.
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Abstract
A photoreceptor 3 is positioned by a photoreceptor positioning member 152 arranged on a backside frame 151 of the main apparatus body and by a photoreceptor drum positioning member 160 on the front side of the main apparatus body. Photoreceptor positioning member 160 formed of metal is united with resinous covers 171 and 172 as duct parts. Each of covers 171 and 172 has an enclosing wall that is bent vertically with respect to its bottom along the outline, so that the enclosing wall of cover 171 and the enclosing wall of cover 172 fit each other, forming a duct 180 therein. Duct 180 is arranged to communicate with a charger 5 via an opening 161 formed in photoreceptor positioning member 160 and cover 171.
29 Citations
6 Claims
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1. An image forming apparatus comprising:
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a photoreceptor for forming an electrostatic latent image thereon in accordance with image data and visualizing the electrostatic latent image with toner; a charger for electrifying the photoreceptor at a predetermined potential in order to form the electrostatic latent image; a photoreceptor positioning member for positioning the rotary axis of the photoreceptor; a duct part formed integrally with the photoreceptor positioning member to form a duct that conveys air flow for discharging air from the vicinity of the charger; and
,a fan for generating the air flow, characterized in that the photoreceptor positioning member and the duct part are formed with an opening at the position opposing the charger, and, the opening enables air around the charger to flow into the duct. - View Dependent Claims (2, 3)
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4. An image forming apparatus comprising:
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an openable exterior housing; a photoreceptor for forming an electrostatic latent image thereon in accordance with image data and visualizing the electrostatic latent image with toner; a charger for electrifying the photoreceptor at a predetermined potential in order to form the electrostatic latent image; a photoreceptor positioning member for positioning the rotary axis of the photoreceptor; a first duct part formed integrally with the photoreceptor positioning member to form a duct that conveys air flow; a second duct part formed integrally with the exterior housing to form the duct that conveys the air flow; and
,a fan for generating the air flow, characterized in that when the exterior housing is closed, the first duct part and the second duct part are combined to constitute the duct, the photoreceptor positioning member and the first duct part are formed with an opening at the position opposing the charger, and, the opening enables air around the charger to flow into the duct. - View Dependent Claims (5, 6)
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Specification
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Current AssigneeSharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
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Original AssigneeSharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
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InventorsKADOWAKI, Hideaki
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Application NumberUS12/254,048Publication NumberTime in Patent OfficeDaysField of SearchUS Class Current399/92CPC Class CodesG03G 21/206 Conducting air through the ...
