Hewlett-packard Company

Hewlett-packard Development Company, L.P.

Gary M Peter

Robert W Jewell

Matt Howell

Donald P Roehling

A computing system including a printer capable of retaining print jobs, a first computer and a second computer. The first computer is capable of transmitting a print job to the printer that causes the printer to retain the job. The first computer is also operable to cause the second computer to store a record of the job. A user of the first computer can later retrieve this record in order to identify the job. The user can also interact with the first computer to re-print the job.

Printing retained print jobs

A computing system including a computer and a printer. The computer is operable to transmit a print job to the printer that cases the printer to retain the job. The computer is further operable to record a record of the job. The record includes an identifier of the job and an identifier of the printer. The user can later retrieve and display the job ID and request that the job be printed. The computer responds by causing the printer to print the job.

System and method for printing retained print jobs

A fixing device includes a fusing roller, a backing roller and an adjustable heater for selectively heating the fusing roller and the backing roller. The adjustable heater includes a heating element and a reflector. The reflector can be positioned to direct heat from the heating element upon the fusing roller or the backing roller. The reflector is coupled to the shaft of a solenoid. Positioning of the reflector is controlled by alternately energizing or de-energizing the solenoid. During the time period between the passing of successive units of the media through the fixing device, the reflector is positioned to heat the backing roller. Heating the backing roller melts toner accumulated on its surface. When the next unit of the media passes between the fusing roller and the backing roller, toner accumulated on the surface of the backing roller is moved onto to the media. By heating the backing roller between the passage of successive units of the media, the quantity of toner that accumulates on the surface backing roller remains small so that the severity of print defects is reduced.

Fixing device using an adjustable heater to reduce contamination on media

An imaging device includes a mechanism and method for approximating media count in a media tray by utilizing course granularity levels of media detected in the tray in combination with an actual count of media processed by the imaging device. A preferred method of determining media count in a media holding tray includes detecting a first course granularity level of media in the holding tray, counting a number of individual media removed from the holding tray, detecting a second course granularity level of media in the holding tray and, calculating the number of media remaining in the holding tray based upon at least the second level of media detected and the counted number of individual media removed from the tray.

Adaptive paper level sensing in an imaging device

A low profile memory disk assembly includes a disk spindle motor, which is mounted in a housing, such as a thin, flat memory cassette housing. A hub of the disk spindle motor rotor mounts at least one disk. The hub also has a peripheral surface which mounts a permanent magnet ring. The housing has a recess bounded by thicker housing regions. The recess has a flat base. A salient pole stator for the motor is mounted to the flat base of the recess in a semicircular recess portion of the recess adjacent to the thicker housing sections to be stiffened or reinforced thereby. The motor rotor is journaled to the base within and concentric to the salient pole stator. The peripheral surface of the permanent magnetic ring defines radial gaps with the tips of the radially disposed salient poles of the salient pole stator. Radially magnetized, alternately poled, equally circumferentially spaced, permanent magnet poles in the permanent magnet ring, different in number from the number of salient poles of the salient pole stator, produce permanent magnet fields which interact with the electromagnetic fields of the salient poles to produce rotation of the motor rotor.

Low profile motor powered disk assembly for a recording/reproducing

A disk pack is clamped between an external flange adjacent one end of a hub and a ring clamp adjacent the other end of the hub. The hub terminates in a tubular section at the location of the ring clamp. The tubular section has substantially cylindrical internal and external surfaces. The ring clamp has a central opening defined by a wall in the ring clamp. The wall of the central opening of the ring clamp is a sliding fit over the substantially cylindrical external surface of the tubular section of the hub. The periphery of a circular expander wedge has an interference fit engagement within the substantially cylindrical internal surface of the tubular hub section. When the circular expander wedge is in place in the tubular section of the hub the tubular section is expanded. The substantially cylindrical external surface of the tubular section is compressed against the wall of the central opening of the ring clamp. The radial pressure or force is maintained by the presence of the circular expander wedge which, in the best mode for practicing the invention, remains in place. The radial pressure is uniformly circumferentially distributed around the circular wedge and is correspondingly uniformly applied to the ring clamp to frictionally secure the ring clamp to the hub.

Expanded tubular hub disk pack assembly clamp

A hard disk pack assembly is attached to a motor powered rotatable member in a disk drive by a spring ring. A disk hub mounts one or more disks, functioning as an axial disk spacer when more than one disk is installed. The disk hub has a central circular opening fitted about a cylindrical body on the rotatable member and seats upon a shoulder on the cylindrical body. A spring ring snaps radially inwardly into a circumferential groove in the cylindrical body in a position wedged between surface of the circumferential groove and an upper circular edge of the circular opening in the disk hub to apply axial and radial components of spring force to the disk hub for the purpose of securely seating the disk hub on the shoulder of the cylindrical body and to center the disk hub with respect to the cylindrical body.

Disk drive having an inwardly radially spring loaded hard ring disk pack

In an elastic coaxial coupler, a cylindrical body of a first member is fitted through an opening in a second member seating said second member upon a flange on the first member. A circumferential groove in the cylindrical body has a conical groove surface confronting a surface of the second member adjacent the opening in the second member. An O-ring in tension around the cylindrical body at the circumferential groove, is drawn into the circumferential groove by the radial force component of the O-ring tension force and is compressed between the conical groove surface and the surface of the second member adjacent the opening in the second member, to securely frictionally engage the second member to the flange of the first member. In an application of this elastic coaxial coupler to a hard disk drive, the first member is the hub of a disk assembly and the second member is the hard disk. In a different application of this elastic coaxial coupler to a hard disk drive, the first member is the rotor of the disk motor and the second member is the hard disk hub.

Disk drive having an O-ring disk clamp

To minimize unwanted motion in a hard disk assembly in a hard disk drive, an elastomeric support is employed to mount a hard disk pack for rotation by a motor rotor of a disk spindle motor. The hard disk pack includes a hard disk support ring which has opposite annular axial faces upon which the hard disks are securely mounted and axially spaced thereby. An elastomeric connection between the hard disk support ring and a cylindrical body of the motor rotor of the disk spindle motor, provides a soft, or compliant, support for the hard disk pack.

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Boise, ID, United States of America

Gary M Peter