Abstract: Folding information and printing surface information, included in content information of a sealed letter creation job, are compared with content printing conditions stored in a storage section, and an appropriate condition (a conveyance path after printing, execution/non-execution of image rotation, and printing page order) is selected such that the position of a window of a windowed envelope is aligned with the position of specifying information printed on a print sheet P to be a content when the print sheet P is enclosed in the envelope. A convey section and a printing section are controlled based on the selected content printing condition.

Abstract: Folding information and printing surface information, included in content information of a sealed letter creation job, are compared with content printing conditions stored in a storage section, and an appropriate condition (a conveyance path after printing, execution/non-execution of image rotation, and printing page order) is selected such that the position of a window of a windowed envelope is aligned with the position of specifying information printed on a print sheet P to be a content when the print sheet P is enclosed in the envelope. A convey section and a printing section are controlled based on the selected content printing condition.

Abstract: An LDV meter 21 cooperates with an LDV processor 22 to measure travel distances or travel speeds of a transfer belt at a prescribed measuring spot and at intervals with a prescribed rotation angle of one of a set of rollers, on which the transfer belt is stretched, as a set for one or more go-around revolutions of the transfer belt. A roller profile calculator 242 calculates a roller profile data as a set of fractions attributable to an eccentricity of the set of rollers in a set of measurement data. A belt profile calculator 241 removes the set of fractions attributable to the eccentricity from the set of measurement data and calculates a belt profile data representative of irregularities in thickness of the transfer belt based on the set of measurement data after removal of the set of fractions attributable to the eccentricity. In printing, a printing machine 1 controls timing for discharge of ink at an ink head based on the belt profile data and the roller profile data.

Abstract: An image forming apparatus includes: a first paper feed unit configured to feed a primary recording medium for double-sided printing; a second paper feed unit configured to feed a secondary recording medium for single-sided printing; a printing unit configured to perform sets of printing based on received job information, each of the sets of printing including double-sided printing on a first predetermined number of primary recording media and single-sided printing on a second predetermined number of secondary recording media; a print timing setting unit configured to set a print timing of each of the first print media and the second print media based on the first predetermined number and the second predetermined number; and a controller configured to perform control to transfer the primary recording media and the secondary recording media to the printing unit based on the print timing.

Abstract: Disclosed is a printing machine comprising: encoders (311 and 312) configured to detect respective angular velocities of a drive roller and a driven roller as a travel speed of core members inside a transfer belt (160); a DSP (321) configured to extract from a temporal variation in a ratio of the measured speed at each roller speed ratio data (profile data) having a frequency corresponding to the speed ratio of a core portion; profile data memory (332) configured to store the profile data; and a head controller (334) configured to control the timing at which each image is formed by a head unit (110) on the basis of the profile data so that positional deviation among multiple images on the transfer belt (160) may be reduced. The head unit (110) forms multiple images on a record medium under the control of the head controller (334).

Abstract: An image forming apparatus includes: a first paper feed unit configured to feed a primary recording medium for double-sided printing; a second paper feed unit configured to feed a secondary recording medium for single-sided printing; a printing unit configured to perform sets of printing based on received job information, each of the sets of printing including double-sided printing on a first predetermined number of primary recording media and single-sided printing on a second predetermined number of secondary recording media; a print timing setting unit configured to set a print timing of each of the first print media and the second print media based on the first predetermined number and the second predetermined number; and a controller configured to perform control to transfer the primary recording media and the secondary recording media to the printing unit based on the print timing.

Abstract: An LDV meter 21 cooperates with an LDV processor 22 to measure travel distances or travel speeds of a transfer belt at a prescribed measuring spot and at intervals with a prescribed rotation angle of one of a set of rollers, on which the transfer belt is stretched, as a set for one or more go-around revolutions of the transfer belt. A roller profile calculator 242 calculates a roller profile data as a set of fractions attributable to an eccentricity of the set of rollers in a set of measurement data. A belt profile calculator 241 removes the set of fractions attributable to the eccentricity from the set of measurement data and calculates a belt profile data representative of irregularities in thickness of the transfer belt based on the set of measurement data after removal of the set of fractions attributable to the eccentricity. In printing, a printing machine 1 controls timing for discharge of ink at an ink head based on the belt profile data and the roller profile data.

Abstract: Disclosed is a printing machine comprising: encoders (311 and 312) configured to detect respective angular velocities of a drive roller and a driven roller as a travel speed of core members inside a transfer belt (160); a DSP (321) configured to extract from a temporal variation in a ratio of the measured speed at each roller speed ratio data (profile data) having a frequency corresponding to the speed ratio of a core portion; profile data memory (332) configured to store the profile data; and a head controller (334) configured to control the timing at which each image is formed by a head unit (110) on the basis of the profile data so that positional deviation among multiple images on the transfer belt (160) may be reduced. The head unit (110) forms multiple images on a record medium under the control of the head controller (334).

Abstract: When perforating a stencil material by a thermal head on the basis of image data, the smoothness of the stencil material is measured. The energy applied to the thermal head is increased as the smoothness of the stencil material becomes lower.

Abstract: A stencil printing machine includes an image reading section, an image processing section for processing to convert image data into perforating data which is used for perforating a stencil sheet, an image perforating section for perforating the stencil sheet in accordance with the perforating data, a printing section for applying ink to a print sheet by using the perforated stencil sheet, and a data holding section for holding perforating data in stencil making operation as re-perforating data. When the number of print sheets comes to a predetermined number, the re-perforating data held in the data holding section is used to re-perforate another stencil sheet to exchange with the previous stencil sheet. The printing is again performed.

Abstract: When perforating a stencil material by a thermal head on the basis of image data, the smoothness of the stencil material is measured. The energy applied to the thermal head is increased as the smoothness of the stencil material becomes lower.

Abstract: Black inverted noises in a white background due to resolution correction are reduced by an image processing apparatus which carries out image modification processing to invert at least a portion of a binary converted signal obtained from binary conversion of an image signal. An image signal S1 is respectively input to resolution correction means 201 and 202 using different correction amounts. The signal is then input to selecting means 310 from the both resolution correction means. The signal output from the selecting means is input to binary conversion means 400 and a signal S2 output therefrom is input to image modification processing means 500. when image modification processing has been instructed, a control signal CNT1 is input to the selecting means 310 and the selecting means output a signal with weak resolution correction from the resolution correction means 202 using a small correction amount.

Abstract: A stencil printing machine 6 including an image reading section 2a, an image processing section 2c for processing to convert image data into binary perforating data which is used for perforating to a stencil sheet, an image perforating section 2b for thermally perforating the stencil sheet in accordance with image of the perforating data, a printing section 3 for transcribing ink to a print sheet by using the perforated stencil sheet and a data holding section 5 for holding perforating data in stencil making operation as re-perforating data simultaneously with the stencil making operation of the stencil sheet by the image perforating section 2b, in which when the print sheet is printed by a limited number of sheets or more, the re-perforating data held in the data holding section 5 is used by a control section 4 by input instruction from an operation panel section 1.

Abstract: A stencil printing apparatus includes a main body, a drum unit having a drum substantially in a cylindrical shape and attachable to and detachable from the main body, a drum detecting device for detecting a kind of the drum unit mounted to the main body and a control device for carrying out an auto idling operation prior to a successive perforating operation in a case when a non-operational time period of the main body exceeds a previously set time period or when the drum detecting device detects interchanging of the drum unit.

Abstract: Black inverted noises in a white background due to resolution correction are reduced by an image processing apparatus which carries out image modification processing to invert at least a portion of a binary converted signal obtained from binary conversion of an image signal. An image signal S1 is respectively input to resolution correction means 201 and 202 using different correction amounts. The signal is then input to selecting means 310 from the both resolution correction means. The signal output from the selecting means is input to binary conversion means 400 and a signal S2 output therefrom is input to image modification processing means 500. when image modification processing has been instructed, a control signal CNT1 is input to the selecting means 310 and the selecting means output a signal with weak resolution correction from the resolution correction means 202 using a small correction amount.

Abstract: Black inverted noises in a white background due to resolution correction are reduced by an image processing apparatus which carries out image modification processing to invert at least a portion of a binary converted signal obtained from binary conversion of an image signal. An image signal S1 is respectively input to resolution correction means 201 and 202 using different correction amounts. The signal is then input to selecting means 310 from the both resolution correction means. The signal output from the selecting means is input to binary conversion means 400 and a signal S2 output therefrom is input to image modification processing means 500. when image modification processing has been instructed, a control signal CNT1 is input to the selecting means 310 and the selecting means output a signal with weak resolution correction from the resolution correction means 202 using a small correction amount.

Abstract: A multiple feed detecting system is provided with a sheet thickness sensor which outputs thickness signals representing the thickness of a sheet to be conveyed, and a sheet size sensor which detects the size of the sheet to be conveyed as measured in the direction of conveyance. A detecting area is set according to the size of the sheet detected and whether multiple feed occurs is determined on the basis of sampling data obtained by the sheet thickness detecting sensor over the detecting area set.

Abstract: A process for producing a wherein an aminium salt infrared light absorber and a positive charge control agent are used in combination while preventing a mutual reaction therebetween. In this toner, the physical contact of the aminium salt compound with the positive charge control agent is avoided (e.g., by separately adding them to respective two separated phases of a binder resin), or alternatively use is made of such a combination of confounds as will not cause a mutual reaction (e.g., a common anion is used).

Abstract: A toner is disclosed wherein an aminium salt infrared light absorber and a positive charge control agent are used in combination while preventing a mutual reaction therebetween. In this toner, the physical contact of the aminium salt compound with the positive charge control agent is avoided (e.g., by separately adding them to respective two separated phases of a binder resin), or alternatively use is made of such a combination of compounds as will not cause a mutual reaction (e.g., a common anion is used).

Abstract: A line connection switching apparatus performs connection switching of a communication line used both for speech communication performed by a telephone set and data communication performed by a facsimile apparatus and is inserted between the telephone set and the facsimile apparatus, and the communication line. When predetermined speech command information is input from a caller side through the communication line, a speech signal is detected by a switching unit. When a voice/silence discriminator discriminates that the speech signal represents voice, a voice interval monitor monitors a duration of the speech signal. If the duration of the speech signal falls within a predetermined range, the speech signal is stored in a speech signal storage unit. A pattern matching unit verifies whether a standard speech pattern of a speech signal registered in standard pattern dictionary unit matches with a speech pattern of the input speech signal stored in the speech signal storage unit.