An apparatus is provided with a feed roller that is rotatable to apply a feeding force on a sheet, a separating pad for pressing the sheet against the feed roller and a roller portion provided coaxially with a support shaft of the feed roller to position the feed roller relative to the separating pad. A damping member for suppressing vibration of the sheet is provided on a side surface of the roller portion to prevent an unusual noise from being generated.

The present invention provides a mask for divided printing that completes an image by plural scans using inks of different plural inks, the mask being able to suppress possible grains during printing to reduce image degradation resulting from beading. If for example, among the print permitting pixels for which the total repulsive potential is to be calculated, a print permitting pixel Do has the highest total repulsive potential, changes in repulsive potential after movement of the pixels are determined and the print permitting pixel Do is moved to a pixel having the lowest total repulsive potential after the movement. This processing is repeated to enable a reduction in the total energy of the entire plane. Consequently, the print permitting pixels are appropriately dispersed in overlapping plane masks so as to have few low frequency components.

The present invention provides an inkjet recording apparatus and a recording apparatus capable of reducing wear of a roller for application, even if liquid (for example, application liquid) is insufficient in a case where liquid is applied to recording media. In an embodiment of the present invention, in a case where it is determined that the application liquid is sufficient in a storage tank, the application liquid is filled in a liquid retention space, the application liquid is applied to the recording medium, and thus recording is performed. In a case where it is determined that the liquid application is insufficient in the storage tank, recording with application is prohibited.

A method of discriminating a type of recording medium and a discriminating apparatus in which the type of recording medium is discriminated based on a temperature change of the recording medium when the recording medium is heated. A type of recording medium is discriminated based on a phase difference between a pulse signal input to a heating device and a pulse signal output by a detecting device detecting a temperature of a recording medium.

A recording head substrate includes a plurality of groups of recording elements arranged in arrays; a number, corresponding to a number of the groups, input contacts for receiving driving pulse signals; signal lines for supplying the driving pulse signals to the groups of recording elements from the input contacts, respectively, wherein in a region between two of the groups of recording elements are adjacent to each other, the signal lines are connected to the recording elements such that areas in which the groups of recording elements are disposed, respectively, have respective driving pulse signal change areas which are overlapped with each other.