Hewlett-packard Development Company, L.p.

Matthew Raisanen

Alan Shibata

Stephen Thomas Rohman

Kevin Lo

Richard Lee Brinkly

Taehong Kim

Sundae Kim

Robert M Yraceburu

Jody L Clayburn

Richard Lee Brinkley

A knockdown apparatus for a finisher includes a register tray, a paddle coupled to a rotatable shaft to compile a recording medium toward an end of the register tray, and a knockdown device, provided above the register tray, to rotate to apply a downward force to the recording medium while the recording medium is in the register tray to decrease a curl in the recording medium.

Knockdown for compiling recording media in finisher

In some examples, a non-transitory-machine readable medium can store instructions executable by a processing resource to select a special media mode from a plurality of special media modes based on a weight or a type of print media and cause a conditioning device to condition the print media in accordance with the special media mode.

Print media modes

Some examples include a print system including a memory to store instructions and print data of a print job, a processor to execute the instructions in the memory to reference print data of a print job, determine a print parameter of the print job, and transform the print data and the print parameter into a conditioning modifier. The print system includes a print engine to dispense a print substance on a medium based on the print data to generate printed medium, and a conditioner to apply heat and pressure to the printed medium, the conditioner including a pressure roller assembly, and a controller to selectively increase a transport speed the pressure roller assembly based on the conditioning modifier and a position of the printed medium relative to the pressure roller assembly to selectively increase the speed of the printed medium through the conditioner.

Print conditioner

In some examples, a media conditioner includes a conveying component to convey a sheet of printable media, a heating element to heat the conveying component, a temperature sensor to measure a temperature of the conveying component, a media sensor to detect the sheet of printable media, and a controller to provide a power level to the heating element. A temperature set-point is set to a pre-established value. Based on data from the temperature sensor, the controller is to maintain the temperature of the conveying component at the temperature set-point by varying the power level. The controller is to apply a boost to the power level based on a signal from the media sensor while the temperature set-point remains at the pre-established value.

Control of heating elements for media conditioners

In one example, a heated pressure roller can include a structural element positioned within a belt roller, a platen coupled to the structural element, wherein the platen comprises: a first side to guide a belt of the belt roller to form a first angle on the first side, and a second side to guide the belt of the belt roller to form a second angle on the second side that is different than the first angle.

Belt roller platens

An image forming apparatus is provided. The image forming apparatus includes a printing engine, a paddle device, a stapler device, and a processor. The printing engine is to form an image on a printing paper. The paddle device is to move the printing paper ejected from the printing engine in a moving direction to align a first end of the printing paper. The stapler device is to staple the align printing paper. The processor is to control the paddle device and the stapler device to move a second end of the aligned printing paper in an opposite direction to the moving direction when the first end of the printing paper is aligned.

Image forming apparatus for paper alignment

In an example printing device may include a tray to receive print media sheets, and a paddle roller to rotate about an axis and move individual print media sheets of the print media sheets to abut an end register of the tray and form a stack of print media sheets, and the paddle roller rotate a first quantity of rotations per print media sheet based in response to a determination that the stack of print media sheets corresponds to a first height.

Paddle roller rotations

An paddle apparatus for a finisher includes a rotatable shaft and a paddle coupled to the rotatable shaft. The paddle is rotatable in a forward direction to compile a recording medium toward an end of a register tray of the finisher, and is rotatable in a reverse direction to apply a downward force to the compiled recording medium. An amount that the paddle is rotated in the reverse direction can be varied based on a height of the compiled recording medium in the register tray.

Variable rotation of paddle for finisher

A system for a partially dried inkjet media conditioner can include a heated pressure roller to apply pressure to a first side of partially dried inkjet media and apply heat to a second side of the partially dried inkjet media.

Partially dried inkjet media conditioner

An example device includes a conveyor to convey a printed medium along a path from a print engine towards a printed media output. The device further includes a housing to hold the conveyor. The housing defines an air intake, an exhaust port, and a conveyor volume to contain the conveyor. The air intake provides air to the conveyor volume to dry the printed medium. The device further includes a tortuous exhaust passage extending from the conveyor volume to the exhaust port to exhaust air from the conveyor volume.

Exhausts for media drying

In one example, an output tension zone can include a first tension roller assembly to receive partially dried inkjet media at an output of a heated pressure roller, wherein the first tension roller assembly includes a first continuous roller to receive a first side of the partially dried inkjet media and a second continuous roller to receive a second side of the partially dried inkjet media and a second tension roller assembly to receive the partially dried inkjet media from the first tension roller assembly, wherein the second tension roller assembly includes a third continuous roller to receive the first side of the partially dried inkjet media and a fourth continuous roller to receive the second side of the partially dried inkjet media.

Output tension zones

In one example, a system for a vapor manager includes a media guide to receive partially dried inkjet media from a heated pressure roller, and a plurality of apertures through the media guide to direct air on to a first portion of the partially dried inkjet media and direct air away from a second portion of the partially dried inkjet media.

Vapor manager

In one example, a system for a partially dried inkjet media conditioner includes a heated pressure roller to apply pressure to a first side of partially dried inkjet media and apply heat to a second side of the partially dried inkjet media.

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Vancouver, WA, United States of America

Matthew Raisanen