Oil supply apparatus
AssigneeRicoh Company, Ltd.
InventorsYasumori Nagahara, Haruki Iida
Life of this patent
Estimating the term…
Abstract
An oil supply apparatus for use with copying machines comprises a tank for holding an offset preventing oil therein, a pump for sucking the oil from the tank, a container for holding the sucked oil therein, an oil application device for applying the oil taken from the container to an image fixing roller and an oil recovery means device for recovering an excessive amount of the oil which was taken from the container and returning it to the tank. The oil is always circulated in the oil supply apparatus and the container can be detached from the tank. When the container is detached from the tank, a stopper is engaged in a drain hole formed in the container concurrently with the detachment action so as to prevent the oil from being spilled.
Claims20
An offset preventing oil supply device for a heat type image fixing apparatus of a copying machine for operation to make copies comprising:
- an image fixing roller rotatably mounted in the copying machine;
- a pressure roller rotatably mounted in the copy machine engageable in pressure contact with said image fixing roller to fix an image on the copy sheet moved therebetween;
- an oil container for containing a replaceable supply of offset preventing oil associated with said image fixing roller, having an oil course defined therein forming a path for the replaceable supply of oil;
- oil supply means between said oil container course and said image fixing roller for supplying oil in small quantities and for evenly distributing the oil on said image fixing roller;
- an oil tank for containing a supply quantity of offset preventing oil associated with said oil container;
- pump means connected between said oil tank and said oil container for drawing oil from said tank and supplying it to said container at one end of said oil course;
- said oil container including a drain at one opposite end of said oil course for draining the oil from said container, whereby a replaceable supply of oil is maintained in said oil container course;
- said pump means actuated when the copying machine is in operation for providing a flow of the oil in the container to continuously apply the oil in a non-deteriorated state to said image fixing roller through said oil supply means.
An oil supply apparatus for use with a copying maching comprising a tank for holding an offset preventing liquid, a pump means for sucking said offset preventing liquid from said tank, a container for holding said offset preventing liquid sucked by said pump means, an offset preventing liquid application means for applying said offset preventing liquid to an image fixing roller, said offset preventing liquid application means disposed between said container and said image fixing roller, and an offset preventing liquid recovery means for recovering an excessive amount of said offset preventing liquid from said container into said tank, said container ring separated from a first section and a second section by a partition plate and said first section and said second section connected for allowing the offset preventing liquid to flow from said first section to said second section, and said second section having a drain hole for discharging the offset preventing liquid therefrom into said offset liquid recovery means.
Dependencies are inferred from the claim text.