Abstract: An image forming apparatus, and a method of controlling it. The apparatus performs, in a case where at least one function out of a plurality of functions of the apparatus ceases to be usable, degeneracy control for operating to provide functions other than the at least one function, and stores information indicating a degeneracy control state is entered. The apparatus controls so as to activate without initialization operation of an image forming mechanism in a case where it is determined that the activation is due to the return from a power saving mode and the information is stored and so as to activate with the initialization operation when the activation is due to a power of the apparatus being turned on.

Abstract: An image reading apparatus includes a reading unit that reads an image on a document, a document conveyance unit that conveys the document to the reading unit, a first identification unit that identifies a size of the document before the document begins to be conveyed, a reading control unit that controls the reading unit to read the document, based on the size identified by the first identification unit, and a second identification unit that identifies a size of the document after the document begins to be conveyed, wherein the reading control unit performs control to, in a case where the size identified by the first identification unit is smaller than the size identified by the second identification unit, cancel reading processing, and in a case where the size identified by the first identification unit is greater than the size identified by the second identification unit, continue the reading processing.

Abstract: An image forming apparatus includes a main controller and an engine controller controlling a printer engine and is configured such that when a communication error occurred between the main controller and the engine controller is detected, whether to perform activation processing for the engine controller is determined based on a power state of the engine controller. When it is determined to perform the activation processing for the engine controller, the image forming apparatus performs the activation processing.

Abstract: An image forming apparatus, and a method of controlling it. The apparatus performs, in a case where at least one function out of a plurality of functions of the apparatus ceases to be usable, degeneracy control for operating to provide functions other than the at least one function, and stores information indicating a degeneracy control state is entered. The apparatus controls so as to activate without initialization operation of an image forming mechanism in a case where it is determined that the activation is due to the return from a power saving mode and the information is stored and so as to activate with the initialization operation when the activation is due to a power of the apparatus being turned on.

Abstract: A specific sheet is prevented from being erroneously used in a job other than a job to use the specific sheet. A method for controlling a printing apparatus including a plurality of sheet storage units for supplying a sheet and a holding unit for storing jobs in order of reception.

Abstract: A conventional method of verifying alteration of an image file has a problem of security and may negatively affect user convenience. An image processing apparatus according to the present invention records, as an image file, input image data and a plurality of types of parameters input by the user, and stores, for each of parameter types classified in accordance with the features of the parameters, first security information based on the plurality of types of parameters. When reading out the image file, second security information is decided for each of parameter types based on the plurality of types of parameters included in the image file. If determined that the pieces of security information for any of the parameter types do not coincide, processing for the image file is changed in accordance with information to be used to restrict the processing to be executed for the image file.

Abstract: A conventional method of verifying alteration of an image file has a problem of security and may negatively affect user convenience. An image processing apparatus according to the present invention records, as an image file, input image data and a plurality of types of parameters input by the user, and stores, for each of parameter types classified in accordance with the features of the parameters, first security information based on the plurality of types of parameters. When reading out the image file, second security information is decided for each of parameter types based on the plurality of types of parameters included in the image file. If determined that the pieces of security information for any of the parameter types do not coincide, processing for the image file is changed in accordance with information to be used to restrict the processing to be executed for the image file.

Abstract: If failure occurs in a part of reading units during a document reading operation, a user restarts an image reading apparatus to allow resuming the reading operation from the image of the document next to the image of the already read document. An image reading apparatus determines whether reading operation for reading the document can be resumed by using a first reading unit or a second reading unit if failure occurs in at least one of the first reading unit and the second reading unit during the reading operation, and causes a nonvolatile memory to store an image of a document already read by the reading operation and the image reading apparatus to restart if the reading operation can be resumed.