It is an object of the present invention to provide a technique capable of suppressing power consumption when printing an image with high density in a thermal printer. the recording paper contains a reversible thermochromic recording material which is in a color-developed state in an initial state, starts color reduction at T.sub.1 or higher after the start of rising temperature, and turns into an achromatized state at T.sub.2 or higher which is higher than T.sub.1. A thermal printer includes the input unit that receives image data, the image processing unit that converts the density for each pixel of the image data into heating data based on the density and temperature characteristics of the reversible thermochromic recording material, and the print processing unit that makes the thermal head heat the recording paper for each pixel based on the heating data to form an image on the recording paper.

A printing system includes a printing device including a thermal head that prints print content on a print medium; and an information processing apparatus that controls the printing device. The information processing apparatus comprises a processor configured to detect, from print image data from a server, a position of a control target portion including a specific portion in a print image corresponding to the print image data. The processor is configured to generate printing control information for printing the control target portion. The processor is configured to transmit the print image data, the position of the control target portion, and the printing control information to the printing device. The printing device executes different printing controls for the control target portion and a portion other than the control target portion based on the print image data, the position of the control target portion, and the printing control information.

It is an object of the present invention to provide a technique capable of suppressing power consumption when printing an image with high density in a thermal printer. the recording paper contains a reversible thermochromic recording material which is in a color-developed state in an initial state, starts color reduction at T.sub.1 or higher after the start of rising temperature, and turns into an achromatized state at T.sub.2 or higher which is higher than T.sub.1. A thermal printer includes the input unit that receives image data, the image processing unit that converts the density for each pixel of the image data into heating data based on the density and temperature characteristics of the reversible thermochromic recording material, and the print processing unit that makes the thermal head heat the recording paper for each pixel based on the heating data to form an image on the recording paper.

Provided is a thermal printer achieving high repeatability of one dot even in an image having a large change in a density and capable of printing a printing material having high sharpness. A thermal printer includes: an image data extension processing unit generating extended image data having pixels in which the number of pixels in a feed direction of a paper sheet is extended; a printing data correction processing unit correcting a density of at least one extended pixel based on a change in a density of the extended pixels in the extended image data in the feed direction or a change in a density of pixels in the image data before extended in the feed direction; and a printing unit printing the image on the paper sheet based on the extended image data in which the density of the at least one extended pixel is corrected.

A printing device includes: a conveying part configured to convey a printing medium in a conveying direction; a printing part configured to print on the printing medium at a print timing; a cutting part provided downstream of the printing part in the conveying direction and configured to cut the printing medium, which has been conveyed by the conveying part, at a cut timing after the printing part prints on the printing medium; and the controller configured to print, by controlling the printing part, a first scale and a second scale on the printing medium. At least a portion of the printed first scale and at least a portion of the printed second scale are arranged at the same position in the conveying direction. The printed first scale and the printed second scale are arranged at different positions in an orthogonal direction orthogonal to the conveying direction.

In accordance with at least one aspect of the present disclosure, a printing apparatus includes: a supply spool support for supporting a supply spool and a take-up spool support for supporting a take-up spool, the supply spool support and the take-up spool support being drivable by at least one motor; a housing defining an enclosure; and a device having an input for receiving an input voltage and an output for delivering an output voltage to the at least one motor, the output voltage being lower than the input voltage, wherein the device is located within the enclosure, and the printing apparatus including a heat sink for dissipating heat away from the device.

Provided is a thermal printer achieving high repeatability of one dot even in an image having a large change in a density and capable of printing a printing material having high sharpness. A thermal printer includes: an image data extension processing unit generating extended image data having pixels in which the number of pixels in a feed direction of a paper sheet is extended; a printing data correction processing unit correcting a density of at least one extended pixel based on a change in a density of the extended pixels in the extended image data in the feed direction or a change in a density of pixels in the image data before extended in the feed direction; and a printing unit printing the image on the paper sheet based on the extended image data in which the density of the at least one extended pixel is corrected.

A display device, having a screen, a memory device storing a plurality of setup items, and a controller connected with the screen and the memory, is provided. Each of the setup items includes information concerning a setting for a character to be printed on a printable medium. The controller controls the screen to display the character to be printed; a plurality of icons, each of which identifies one of the setup items; and a setup window, in which a subject setup item and one of setting options for the subject setup item are displayed in association with a subject icon identifying the subject setup item among the plurality of icons being displayed. The controller accepts selection of one of the setting options for the subject setup item and designates the accepted one of the setting options to be the setting for the subject setup item.

A printer includes: a print head that performs printing on a print medium of a conveyance object having the print medium and a member other than a print medium having mutually different colors or color brightness levels on regions on one side; a detector to detect a color or color brightness of the conveyance object at a detection position; and a processor. When there is a change in the color or color brightness as a first detection result as compared with the color or color brightness as a second detection, the processor updates a held value, and does not update the held value when there is no change. The processor determines whether there is a change in a detection value as compared with the updated held value or a previous held value not updated. When determining that there is no change, the processor stops printing.

A method for printing includes analyzing print quality requirements for a printing area; adjusting settings for heater elements (e.g., energy and/or firing durations) of strobe lines based on the requirements analysis; and providing a plurality of individual strobe signals to the strobe lines. The strobe signals can be transmitted simultaneously, for example with a field-programmable gate array. Analyzing print quality requirements can include separating the printing area into one or more areas of interest, such as rows and/or columns. For each area of interest individual print quality settings (e.g., darkness, contrast, and/or media sensitivity) may be selected.