Abstract: Techniques for controlling assessment of storage height are described. In an example, a device includes an optical transducer and a light source. The optical transducer generates a signal corresponding to light received from the light source. Based on the signal, brightness of the light source may be controlled.

Abstract: Printing techniques for print media are described herein. In an example, a printer includes print head and a feed roller to move a medium under the print head along a print path. The print head includes a first set of nozzles such that the first set of nozzles is proximal to the feed roller. Further, the print head is to print on a Top-of-Form (TOF) of the medium through the first set of nozzles.

Abstract: Examples techniques to control execution of print commands are described. In an example, a print command indicative of markings to be on a medium is received at an image rendering device. A number of ink droplets to be ejected from nozzles of the image rendering device to form the markings on the medium is determined. A thickness that the medium will have upon the markings being formed is determined based on the number of ink droplets to be ejected from the nozzles. The print command is executed based on the estimated thickness.

Abstract: Printing techniques for print media are described herein. In an example, a printer includes print head and a feed roller to move a medium under the print head along a print path. The print head includes a first set of nozzles such that the first set of nozzles is proximal to the feed roller. Further, the print head is to print on a Top-of-Form (TOF) of the medium through the first set of nozzles.

Abstract: A kicker system comprises a rotatable roller for advancing media along a media path toward a print zone. A kicker is mounted on the roller for pivotal movement transverse to the rotational axis of the roller. A cam surface configured to engage the kicker during a portion of a rotation of the roller to thereby pivotably retract the kicker out of the media path. The kicker can be selectively actuated by controlling the relative rotation of the roller and the cam surface.

Abstract: A sheet separator includes an advancing roller driven to rotate to move a sheet forwards along a sheet path, and a reversing roller driven to rotate to move a sheet backwards along the path. The reversing roller and advancing roller are mounted adjacently and are relatively movable between a pinched position and a separated position. The reversing roller has a torque limiter for allowing the reversing roller to slip and counter-rotate with the advancing roller when friction applied by the advancing roller on the pinched reversing roller exceeds a preset value. Overriding roller mounted therein allows a sheet to pass over a roller when the rollers are separated and to remain idle when the rollers are pinched.

Abstract: An embodiment of the invention provides a mechanism for controlling at least one ink transmission module, which controls a supply of ink using received control rotation. The mechanism includes an input, to receive control rotation. The mechanism also includes an output, to selectively transfer the control rotation to the ink transmission module. A control system is also provided to control the selective transfer of the output. The mechanism is moveable into a disengaged configuration by the control system, in which the output does not transfer rotation of the input to the ink transmission module, by a first predetermined sequence of rotations of the input, and into an engaged configuration, in which the output transfers rotation of the input to the ink transmission module, by a second predetermined sequence of rotations of the input.

Abstract: The invention relates to a pick arm for picking a media from a media stack. The pick arm includes a first arm section and a second arm section which are pivotally connected together. Each of the first and second arm sections have respective first and second ends. A media roller is attached to the first end of the first arm section and the second end of the second arm section is attached to drive means configured to apply a torque to the pick arm. When the applied torque is insufficient to enable the pick arm to pick up a media and drive it up a separation wall, the media roller is arranged to automatically move from a first position to a second position. The second position being located distal from the first position in a direction away from the separation wall.

Abstract: A tray for holding a stack of media sheets for feeding into a printing mechanism is provided. The tray has a first media guide movable relative to a first wall of the tray in a first direction to vary a first spacing there between for accommodating different media sizes in the first direction. The tray also has a second media guide manually adjustable relative to a second wall of the tray in a second direction to vary a second spacing there between for accommodating different media sizes in the second direction. The second direction is substantially perpendicular to the first direction. Furthermore, the movements of the first guide are synchronized with movements of the second guide so that adjustment of the first guide is automatically achieved through the manual adjustment of the second guide.

Abstract: The invention relates to a pick arm for picking a media from a media stack. The pick arm includes a first arm section and a second arm section which are pivotally connected together. Each of the first and second arm sections have respective first and second ends. A media roller is attached to the first end of the first arm section and the second end of the second arm section is attached to drive means configured to apply a torque to the pick arm. When the applied torque is insufficient to enable the pick arm to pick up a media and drive it up a separation wall, the media roller is arranged to automatically move from a first position to a second position. The second position being located distal from the first position in a direction away from the separation wall.

Abstract: A tray for holding a stack of media sheets for feeding into a printing mechanism is provided. The tray has a first media guide movable relative to a first wall of the tray in a first direction to vary a first spacing there between for accommodating different media sizes in the first direction. The tray also has a second media guide manually adjustable relative to a second wall of the tray in a second direction to vary a second spacing there between for accommodating different media sizes in the second direction. The second direction is substantially perpendicular to the first direction. Furthermore, the movements of the first guide are synchronized with movements of the second guide so that adjustment of the first guide is automatically achieved through the manual adjustment of the second guide.

Abstract: A tray for holding a stack of media sheets for feeding into a printing mechanism is provided. The tray has a first media guide movable relative to a first wall of the tray in a first direction to vary a first spacing therebetween for accommodating different media sizes in the first direction. The tray also has a second media guide manually adjustable relative to a second wall of the tray in a second direction to vary a second spacing therebetween for accommodating different media sizes in the second direction. The second direction is substantially perpendicular to the first direction. Furthermore, the movements of the first guide are synchronized with movements of the second guide so that adjustment of the first guide is automatically achieved through the manual adjustment of the second guide.

Abstract: A tray for holding a stack of media sheets for feeding into a printing mechanism is provided. The tray has a first media guide movable relative to a first wall of the tray in a first direction to vary a first spacing therebetween for accommodating different media sizes in the first direction. The tray also has a second media guide manually adjustable relative to a second wall of the tray in a second direction to vary a second spacing therebetween for accommodating different media sizes in the second direction. The second direction is substantially perpendicular to the first direction. Furthermore, the movements of the first guide are synchronized with movements of the second guide so that adjustment of the first guide is automatically achieved through the manual adjustment of the second guide.

Abstract: A sheet media handling system suitable for use with a printer is disclosed. The sheet media handling system includes a first support and a second support adjacent the first support. In use, the first support supports first sheet media and second sheet media on the first sheet media. The second support supports a portion of second sheet media that is not supported by the underlying first sheet media. A biasing means biases the second support. The biasing means is collapsible under the portion of up to a predetermined number of sheets of the second sheet media. During a pick cycle when the first support is moved to present supported media thereon to an infeed zone of the printer, the portion topmost of the second sheet media is brought to within a predetermined tolerance of the infeed zone.

Abstract: A sheet media handling system suitable for use with a printer is disclosed. The sheet media handling system includes a first support and a second support adjacent the first support. In use, the first support supports first sheet media and second sheet media on the first sheet media. The second support supports a portion of second sheet media that is not supported by the underlying first sheet media. A biasing means biases the second support. The biasing means is collapsible under the portion of up to a predetermined number of sheets of the second sheet media. During a pick cycle when the first support is moved to present supported media thereon to an infeed zone of the printer, the portion topmost of the second sheet media is brought to within a predetermined tolerance of the infeed zone.

Abstract: A pick-up mechanism and a method for performing a pick-up cycle in a reproduction machine. The pick-up mechanism comprises a pick-up control pinion which is firmly coupled to a control cam, and a drive gearing including a first rocker driving gear and a second rocker driving gear. The first and second rocker driving gears are mounted to a rocker device to be alternately engaged into and disengaged from, respectively, the pick-up control pinion. Upon starting the pick-up operation, the second rocker driving gear is drivingly engaged into a toothed section of the pick-up control pinion, and, in the course of the pick-up operation, the first rocker driving gear is drivingly engaged into the toothed section of the pick-up control pinion.

Abstract: A removable bearing for mounting on a slot of a supporting wall is disclosed. The removable bearing includes a bearing member having a bore for receiving a rotatable shaft. The bearing also includes a handle fixedly attached to the bearing member. Attached to the handle is a latching member for engaging a corresponding aperture in the supporting wall when mounting the removable bearing thereon. The handle has an engagement portion that allows tool engagement for moving the handle away from the supporting wall to disengage the latching member when removing the bearing from the slot.

Abstract: An apparatus in a printer for adjusting pen-to-print medium spacing independently of the size of a print medium is disclosed. The apparatus includes a pen, a print platen, a datum, an bar and a means for moving the bar. The print platen supports a print medium for printing using the pen. The datum holds the print platen a first predetermined pen-to-print medium spacing away from the pen. The print platen is resiliently biased against the datum and can be moved away from the datum to define a gap therebetween. The bar is moveable into and out of the gap. When the bar is in the gap, the print platen rests against the bar to define a second predetermined pen-to-print medium spacing. A remotely sent parameter allows the apparatus to make the appropriate adjustment.

Abstract: An apparatus in a printer for adjusting pen-to-print medium spacing independently of the size of a print medium is disclosed. The apparatus includes a pen, a print platen, a datum, an arm and a means for moving the arm. The print platen supports a print medium for printing using the pen. The datum holds the print platen a first predetermined pen-to-print medium spacing away from the pen. The print platen is resiliently biased against the datum and can be moved away from the datum to define a gap therebetween. The arm is moveable into and out of the gap. When the arm is in the gap, the print platen rests against the arm to define a second predetermined pen-to-print medium spacing. A remotely sent parameter allows the apparatus to make the appropriate adjustment.

Abstract: A print feed mechanism for feeding print media to a printing zone of a printer in which the feed mechanism is adjustable to vary the position of a pinch roller against a drive roller so as to vary the angle at which print media is fed to the printing zone.