A thermal printing apparatus includes a frame, an endless ribbon to transport ink on its outer face, a coating device to coat the endless ribbon with ink, a printhead to print by thermal transfer a substrate with a part of the ink, a plurality of first rollers supporting and transporting the endless ribbon by its inner face along a path from the coating device to the printhead and from the printhead to the coating device in a cyclic manner, at least one first conveyor arranged to support the inner face of the endless ribbon between two adjacent first rollers along its path from the coating device to the printhead; the first conveyor including a plate fixed in translation and rotation with the frame and having a first convex surface supporting the inner face, a heat exchanger designed to cool down the first surface of the plate at a predefined temperature.

An inlet seal, an outlet seal, and a piston are connected to a shaft. The inlet seal seals an ink inlet of an ink reservoir. The outlet seal seals an ink outlet of the ink reservoir. Also, the piston is within a cylinder. The inlet seal, the outlet seal, and the piston all move with the shaft. A biasing member contacts the piston to bias the piston in a first direction. Pressurized air simultaneously provided to the cylinder and to the ink reservoir biases the piston in a second direction, opposite the first direction, and pressurizes ink within the ink reservoir. Moving the shaft in the first direction does not seal the ink inlet but does seal the ink outlet. Moving the shaft in the second direction seals the ink inlet but does not seal the ink outlet, thus allowing the pressurized ink out from the ink reservoir.

An inlet seal, an outlet seal, and a piston are connected to a shaft. The inlet seal seals an ink inlet of an ink reservoir. The outlet seal seals an ink outlet of the ink reservoir. Also, the piston is within a cylinder. The inlet seal, the outlet seal, and the piston all move with the shaft. A biasing member contacts the piston to bias the piston in a first direction. Pressurized air simultaneously provided to the cylinder and to the ink reservoir biases the piston in a second direction, opposite the first direction, and pressurizes ink within the ink reservoir. Moving the shaft in the first direction does not seal the ink inlet but does seal the ink outlet. Moving the shaft in the second direction seals the ink inlet but does not seal the ink outlet, thus allowing the pressurized ink out from the ink reservoir.

Examples of a print particle transfer device are described herein. Some examples of the print particle transfer device include a print particle vessel to contain print particles. In some examples, the print particle transfer device also includes a plunger with a fibrous seal element to engage an inside surface of the print particle vessel. The fibrous seal element seals an interface between the plunger and the inside surface of the print particle vessel to prevent escape of the print particles at the interface during movement of the plunger within the print particle vessel.

In some examples, an apparatus can include a pawl including an anti-rotation surface and a spring, and a valve housing including a wedge, where the spring biases the pawl to a first position in response to the valve housing being at a closed position such that the wedge of the valve housing contacts the anti-rotation surface of the pawl to prevent rotation of the valve housing at the first position of the pawl.

A liquid ejecting head including a head unit including a liquid ejecting unit that ejects a liquid from a nozzle, a drive circuit that drives the liquid ejecting unit, a containing body in which a space that stores the liquid is formed; a fixing plate which contacts the head unit on a nozzle side of the head unit; and a support that contacts the fixing plate and that supports the head unit, in which the support is formed of a material having a thermal conductivity higher than that of the containing body.

A heater includes: a planar heat generator; a power supply circuit that controls supply of power to the planar heat generator; a plurality of temperature sensors that is provided on the planar heat generator and measures a temperature; and a hardware processor that detects abnormality of the temperature sensor in a case where a difference in temperature measured by each of two of the temperature sensors out of the plurality of temperature sensors exceeds an abnormality threshold value after a predetermined waiting time has elapsed since the supply of power to the planar heat generator is stopped.

An inkjet recording apparatus includes a conveying unit, a recording unit, a heat source, a heat source moving unit and a heat source moving control unit. The conveying unit performs a conveying operation to move a conveying member thereby conveying a recording medium placed on a conveying surface of the conveying member. The recording unit records an image by ejecting ink to the recording medium conveyed by the conveying unit. The heat source moving unit moves the heat source. The heat source moving control unit moves the heat source by the heat source moving unit such that a distance between the heat source and the conveying surface increases when the conveying operation which is performed by the conveying unit stops in a manner in which the conveying operation can be resumed in a state where the heat source is positioned in proximity of the conveying surface.

A heater includes: a planar heat generator; a power supply circuit that controls supply of power to the planar heat generator; a plurality of temperature sensors that is provided on the planar heat generator and measures a temperature; and a hardware processor that detects abnormality of the temperature sensor in a case where a difference in temperature measured by each of two of the temperature sensors out of the plurality of temperature sensors exceeds an abnormality threshold value after a predetermined waiting time has elapsed since the supply of power to the planar heat generator is stopped.

An image recording method includes a first intermediate image forming step of applying an ink onto an intermediate transfer member to form a first intermediate image, a second intermediate image forming step of applying a transfer assisting liquid containing thermoplastic resin particles and rosin-based resin particles to the first intermediate image formed on the intermediate transfer member to form a second intermediate image, and a transfer step of bringing the second intermediate image formed on the intermediate transfer member into contact with a recording medium, peeling off the second intermediate image from the intermediate transfer member while the contact state with the recording medium is maintained, and transferring the second intermediate image to the recording medium. In the transfer step, the second intermediate image brought into contact with the recording medium has a temperature not less than the glass transition temperature of the thermoplastic resin particles.