Apparatus for preventing damage to both an electrophotographic printer and a recording form used with the printer
AssigneeAsahi Kogaku Kogyo Kabushiki Kaisha
InventorsIkuo Negoro, Masatoshi Takano, Atsushi Chikama, Kiyoshi Negishi
Life of this patent
Estimating the term…
Abstract
A printer for electrophotographically forming an image on a continuous-form recording paper. The printer has a transfer unit and a pair of heat fixing rollers which are brought into a withdrawn state, in a print stand-by state. Thus, the recording paper is out of contact with a photoconductive drum and a heat roll when the transfer unit and heat fixing rollers are in their withdrawn state. A pair of dust removing brushs are also brought into a withdrawn state in the print stand-by state so as to be out of contact with the recording paper.
Claims20
A printer for electrophotographically forming an image on a continuous-form recording paper, comprising:
- a pair of fixing rollers, at least one of said fixing rollers being withdrawable so that it can be moved from a fixing roller operative position to a fixing roller withdrawn position;
- a transfer charger that is movable between a transfer charger operative position to a transfer charger withdrawn position;
- and
- drive means for executing a withdrawing and restoring operation to simultaneously withdraw said withdrawable fixing roller and said transfer charger to respective withdrawn positions, or simultaneously restore said withdrawable fixing roller and transfer charger to respective operative positions.
A printer for electrophotographically forming an image on a continuous-form recording paper, comprising:
- dust brush means provided adjacent an inlet of said continuous-form recording paper, said dust brush means being withdrawable from a position in which said dust brush means contacts said continuous-form recording paper;
- fixing roller means that is withdrawable from a fixing roller operative position;
- transfer means that is withdrawable from a transfer operative position;
- and
- drive means for withdrawing and restoring said withdrawable fixing roller means, transfer means and dust brush means at predetermined timings.
A printer for electrophotographically forming an image on a continuous-form recording paper, comprising a pivotally withdrawable transfer charger and a paper holder for holding said recording paper for said transfer charger, said transfer charger and said paper holder being pivotally swung to separate said recording paper from a photoconductive drum when said printer is in a print stand-by state, said paper holder being pivotally movable relative to said transfer charger and being provided with an operating member for effecting a pivotal movement of said paper holder independently of said transfer charger.
An electrophotographic printer that forms an image on a recording form, comprising:
- a brush that is provided adjacent an inlet of said recording form, said brush being movable from an operative position in which said brush is proximate said recording form to a withdrawn position in which said brush is moved away from said recording form;
- a fixing roller that is movable from an operative position proximate said recording form to a withdrawn position away from said recording form;
- a transfer charger that is movable from an operative position proximate said recording form to a withdrawn position away from said recording form;
- and
- means for driving said fixing roller, transfer charger and brush to either their respective withdrawn positions or their respective operative positions at predetermined timings.
A printer for electrophotographically forming an image on a recording form, comprising:
- a withdrawable transfer charger;
- and
- means for holding said recording form for said transfer charger, said transfer charger and said recording form holding means being movable to move said recording form away from a photoconductive drum when said printer is in a print stand-by state, said recording form holding means being movable relative to said transfer charger and having an operating member that effects a movement of said recording form holding means independently of said transfer charger.
A printer for electrophotographically forming an image on a recording form, comprising:
- a fixing roller that can be moved between an operative position and a withdrawn position;
- a transfer charger that is movable between an operative position and a withdrawn position;
- and
- shifting means for simultaneously shifting said fixing roller and transfer charger to respective withdrawn positions.
Dependencies are inferred from the claim text.