Laser beam printer
AssigneeHitachi, Ltd.
InventorsTetsuji Takegoshi, Kazuo Kikuchi, Noriyoshi Ogura
Life of this patent
Estimating the term…
Abstract
The top surface of the exterior case of a printing apparatus is formed of a first top surface portion which lies substantially above a fixation unit and a paper ejector, a second top surface portion which lies substantially above a control unit, and a third top surface portion which lies substantially above development units, a photosensitive belt and a transfer drum. The levels of the respective top surface portions are higher in the order of the first top surface portion, the second top surface portion and the third top surface portion. Top surface portions of higher levels are located from the front of the upper surface of the exterior case toward the back.
Claims17
A laser beam printer comprising an exterior case which houses therein a plurality of devices for forming an image by use of a laser beam and for printing the image on a sheet of paper, the plurality of devices including a transfer unit having an axis, a drive unit provided on one side of the transfer unit in the direction of the axis of the transfer unit, and a control unit which controls at least one of the plurality of devices and provided on an other side of the transfer unit in the direction of the axis of the transfer unit, a top surface being formed at an upper surface of the exterior case and holding at least one printed sheet thereon, the top surface having at least two top surface portions including a first top surface portion and a second top surface portion having different height levels from one another, the first top surface portion having a first height level and being located so as to lie substantially above and extend over the drive unit, and the second top surface portion having a second height level which is higher than the first height level and being located so as to lie substantially above and extend over the control unit.
A laser beam printer having a top surface which is formed at an upper surface of an exterior case and which serves to hold printed sheets of papers, the exterior case housing therein a plurality of devices including a photosensitive belt on which an electrostatic latent image is formed by use of a laser beam, a development unit which develops the electrostatic latent image, a transfer drum having an axis and a transfer unit which transfers the developed image onto a sheet of paper, a fixation unit which fixes the image transferred onto the sheet of paper, a paper ejector which ejects the sheet of paper, a drive unit provided on one side of the transfer drum in the direction of the axis of the transfer drum, and a control unit which controls at least one of the plurality of devices and which is provided on an other side of the transfer drum in the direction of the axis of the transfer drum, the top surface including a first top surface portion which lies substantially above and extends over the fixation unit and the paper ejector, a second top surface portion which lies substantially above and extends over the control unit, and a third top surface portion which lies substantially above and extends over the development unit, the photosensitive belt, the transfer drum and the drive unit, the first, second and third top surface portions having different height levels which differ from one another with the first and second top surface portions having height levels which are higher than the height level of the third top surface portion.
Dependencies are inferred from the claim text.