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US 8,010,015 B2Granted
Charger and image forming apparatus using the charger
AssigneeSharp Kabushiki Kaisha
InventorHideaki Kadowaki
Life of this patent
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Abstract
A grid electrode is attached to a case and a serrated electrode holder by engaging an opening of the grid electrode with a pair of engaging claws formed in the case and engaging another opening of the grid electrode with an engaging claw of the serrated electrode holder. Then, in the condition where the grid electrode has been attached to the case and serrated electrode holder, the grid electrode and the serrated electrode holder are fixed to the case by rotating them until engaging projections of the serrated electrode holder engage the engaging holes of the case.
Claims7
A charger comprising:
- a discharge electrode;
- a discharge control electrode for controlling discharge from the discharge electrode;
- a discharge electrode supporter for holding the discharge electrode;
- and
- a housing for fixing the discharge electrode, the discharge control electrode, and the discharge electrode supporter,
- wherein the housing includes:
- a first engaging claw arranged near one end of the housing for engaging a first end of the discharge control electrode;
- and
- a pair of retainers disposed opposite to each other and formed near the one end for pivotably supporting the discharge electrode supporter,
- the discharge electrode supporter includes:
- a pivot stud projectively formed near the one end so as to be inserted into the retainers;
- a second engaging claw for engaging a second end of the discharge control electrode on the side opposite to the first end;
- first and second spacing regulators for defining and setting the spacing between the discharge control electrode and the discharge electrode at a predetermined distance, and
- wherein the pair of retainers each includes a cutout projected inwards in the housing and formed in semi-cylindrical shape which enables the pivot stud to be inserted therethrough,
- when the discharge electrode supporter is attached to the housing by inserting the pivot stud into the cutout of each of the retainers so that the discharge control electrode is fixed to the housing, the pivot stud inserted into the retainers is pressed by the stress arising from the discharge control electrode when the discharge control electrode is thus fixed, in the direction toward the end at which the retainers are arranged, and
- both ends of the discharge control electrode are engaged with the first and second engaging claws, then the discharge electrode supporter is rotated relative to the housing on the pivot stud so that the discharge control electrode and the discharge electrode supporter are fixed to the housing.
13 more elements
Dependencies are inferred from the claim text.