Abstract: A print apparatus is disclosed. In an example, the print apparatus comprises: a photoconductive surface to receive a latent image representative of an image to be printed onto a printable substrate; a plurality of print components, each print component having a surface movable relative to the photoconductive surface, wherein a current or voltage is to be applied between the print component surface and the photoconductive surface; and processing circuitry to: measure a current or voltage between each print component surface and the photoconductive surface; responsive to detecting a deviation in the measured current or voltage from a reference current or voltage in respect of any of the plurality of print components, determine that there exists a defect associated with the photoconductive surface; and determine, based on the amount of deviation of the measured current or voltage from the reference current or voltage, an indication of the size of the defect.

Abstract: In one example a method comprises moving, by a processor, a photoreceptor of a print apparatus. The photoreceptor is movable between a fully engaged position in which the photoreceptor is to engage a transfer member of the print apparatus to transfer an image from the photoreceptor to the transfer member and a fully disengaged position in which the photoreceptor is remote from the transfer member. The method comprises moving, by a processor, the photoreceptor to an intermediate position between the fully engaged and fully disengaged positions. The method comprises engaging, by a processor, a cleaning system of the print apparatus with the photoreceptor when the photoreceptor is in the intermediate position.

Abstract: A print agent application assembly is disclosed. The print agent application assembly includes a print agent transfer roller to receive print agent and transfer a portion of the print agent to a photoconductive surface. The print agent application assembly may further include an electrode to provide an electric charge to the print agent transfer roller. The print agent transfer roller and the electrode may define walls of a cavity through which print agent is to pass. The electrode may comprise an aperture via which a portion of the print agent is able to exit the cavity. A method and a print apparatus are also disclosed.

Abstract: A cast device useable with an image forming apparatus is provided. The cast device includes at least one tube and a cast body. The cast body includes the at least one tube implanted into the cast body using a combined casting process.

Abstract: A cast device useable with an image forming apparatus is provided. The cast device includes at least one tube and a cast body. The cast body includes the at least one tube implanted into the cast body using a combined casting process.

Abstract: A roller device includes a cylinder member. The cylinder member includes wall member having a plurality of channels that are disposed within the wall member. The channels circulate a fluid therein to uniformly regulate a temperature of the cylinder member.

Abstract: A method, diagnostic tool and system are provided for evaluating printing defects. A captured image of a printed sheet is received and a profile generated of the printed sheet, this profile being representative of tonal variations in the printed sheet. The profile is analyzed in a plurality of different scales and an assessment made of the significance of one or more features of a printing defect throughout the plurality of different scales. From the assessed significance of the one or more features, an evaluation is carried out, in each of the plurality of different scales, of the severity of the printing defect.

Abstract: A roller device includes a cylinder member. The cylinder member includes wall member having a plurality of channels that are disposed within the wall member. The channels circulate a fluid therein to uniformly regulate a temperature of the cylinder member.

Abstract: A method, diagnostic tool and system are provided for evaluating printing defects. A captured image of a printed sheet is received and a profile generated of the printed sheet, this profile being representative of tonal variations in the printed sheet. The profile is analyzed in a plurality of different scales and an assessment made of the significance of one or more features of a printing defect throughout the plurality of different scales. From the assessed significance of the one or more features, an evaluation is carried out, in each of the plurality of different scales, of the severity of the printing defect.