The present disclosure is drawn to printing systems. In one example, a printing system can include an electrode having a plurality of electrode protrusions associated therewith and a conductive plate. The electrode and conductive plate can be positioned with respect to one another to generate an electric field therebetween and to allow a media substrate to be positioned therebetween to be exposed to the electric field. Additionally, an inkjet print head can form a printed image on the media substrate after exposure to the electric field.

The present disclosure is drawn to printing systems. In one example, a printing system can include an electrode having a plurality of electrode protrusions associated therewith and a conductive plate. The electrode and conductive plate can be positioned with respect to one another to generate an electric field therebetween and to allow a media substrate to be positioned therebetween to be exposed to the electric field. Additionally, an inkjet print head can form a printed image on the media substrate after exposure to the electric field.

An electrophotographic image forming apparatus includes: an image carrier that carries and conveys a toner image; a charging member arranged in contact with or close to the image carrier; a charging power supply that charges the image carrier; an exposurer that forms a latent image on the charged image carrier; a developing member arranged close to the image carrier; a developing power supply that develops the latent image and forms a toner image on the image carrier; a transfer member that transfers the toner image to a medium; and a hardware processor that controls the image forming apparatus, wherein the hardware processor obtains a potential of an exposure part and a non-exposure part, on the image carrier after the toner image has been transferred to the medium, determines a charging bias based on a difference between the obtained potentials, and determines a developing bias based on the determined charging bias.

An electrophotographic image forming apparatus includes: an image carrier that carries and conveys a toner image; a charging member arranged in contact with or close to the image carrier; a charging power supply that charges the image carrier; an exposurer that forms a latent image on the charged image carrier; a developing member arranged close to the image carrier; a developing power supply that develops the latent image and forms a toner image on the image carrier; a transfer member that transfers the toner image to a medium; and a hardware processor that controls the image forming apparatus, wherein the hardware processor obtains a potential of an exposure part and a non-exposure part, on the image carrier after the toner image has been transferred to the medium, determines a charging bias based on a difference between the obtained potentials, and determines a developing bias based on the determined charging bias.

A process for producing biotech adapters includes ionization of inks that are later used to print on any of a multitude of surfaces while under the influence of specialized electromagnetic radiation, thereby such printing creates the missing frequency that will complete the man-made frequency thus obtaining a bio compatible frequency known to be beneficial to the health of the user. For example, the process is used to print a biotech adapter having an adhesive backing. The biotech adapter is then attached (e.g. by the adhesive) to the user's electronic device (e.g., cellular phone), preferably at a location where such harmful radio waves are emitted in the direction of the user's head. The biotech adapter reacts to the harmful radio waves, completing the missing radio waves by emitting radio waves that are known to be beneficial to humans.

A process for producing biotech adapters includes ionization of inks that are later used to print on any of a multitude of surfaces while under the influence of specialized electromagnetic radiation, thereby such printing creates the missing frequency that will complete the man-made frequency thus obtaining a bio compatible frequency known to be beneficial to the health of the user. For example, the process is used to print a biotech adapter having an adhesive backing. The biotech adapter is then attached (e.g. by the adhesive) to the user's electronic device (e.g., cellular phone), preferably at a location where such harmful radio waves are emitted in the direction of the user's head. The biotech adapter reacts to the harmful radio waves, completing the missing radio waves by emitting radio waves that are known to be beneficial to humans.

The optical scanning apparatus comprises a plurality of light sources; a light deflection member configured to deflect luminous flux from the plurality of the light sources to a main scanning direction; and a plurality of turning back mirrors configured to reflect luminous flux deflected in the main scanning direction by the light deflection member towards a scanning object moving in a sub-scanning direction. Adjustment mechanisms are selectively mounted in the turning back mirrors in which reflection directions with respect to incident directions of the luminous flux at the time of being developed excluding the other turning back mirrors in the middle to adjust postures and shapes thereof in a state in which optical paths from the plurality of the turning back mirrors to the corresponding scanning objects are fixed at the scanning object side which is an image surface.

An image forming apparatus includes an image holding member, a charging device that charges a surface of the image holding member and includes a charging member disposed in contact with the surface of the image holding member, an exposure device that forms a latent image by exposing the charged surface, a developing device that forms a toner image by developing the latent image with toner, and a transfer device that transfers the toner image formed to a recording medium. An amplitude Af with a period Lf (mm) satisfying the formula (F5)(V/L)(F+5) is 0.80 m or less where F is the natural frequency (Hz) of the exposure device, V is the rotational peripheral velocity (mm/s) of the charging member, and L is the period (mm) in analysis of the circumferential direction period of the surface shape of the charging member.

A print engine includes a printer module for printing image data in a plurality of different print modes, wherein each print mode has an associated line print time. A data interface receives image data and associated metadata for a print job from a pre-processing system, the metadata including print mode metadata. A digital memory stores a plurality of pulse timing functions, each pulse timing function corresponding to one of the line print times associated with the plurality of print modes. A metadata interpreter interprets the metadata and determines the print mode to be used to print the image data. A printer module controller controls the printer module to print the image data using the pulse timing function corresponding to the line print time associated with the print mode, wherein each light source is activated for a pulse count corresponding to a pixel code value of an associated image pixel.

A device includes a current sensor, a first current monitor, and a second current monitor. The current sensor is to sense a current between an input node and an output node. The first current monitor is to disconnect the input node from the output node in response to the sensed current exceeding a first threshold current for a period exceeding a threshold period. The second current monitor is to disconnect the input node from the output node in response to the sensed current exceeding a second threshold current greater than the first threshold current.