Ricoh Company, Ltd.

Takeo Ohashi

Jun Sasaki

Tatsuo Hirono

Yukio Tagawa

Kohichi Kanaya

Takashi Enami

Takahiko Tokumasu

Manabu Izumikawa

Masami Miyajima

Takamasa Hayashi

Hiroyuki Kudose

Shota Miyajima

Takeshi Kowada

Takashi Imori

When a reading unit reads information of a pattern image for correcting image quality printed on at least either side of a recording medium, a control unit compares the information of the pattern image for correcting image-quality with correction pattern information that is a basis of the pattern image for correcting image quality transferred to the at least either side of the recording medium, and controls an image forming unit based on a result of the comparison to correct image quality on the at least either side of the recording medium.

Image forming apparatus, image processing unit, and image forming method to keep image quality precision of both sides of recording medium, and computer product

In a double-sided image forming apparatus and method, back-side images are developed on a first middle transfer belt prior to developing of front-side images on the first middle transfer belt, and the back-side images are transferred to a second middle transfer belt. The number of back-side images allowed to be supported at a time on the second middle transfer belt is determined. The number of back-side images are developed on the first middle transfer belt prior to developing of the same number of front-side images on the first middle transfer belt. The front-side image of the first middle transfer belt and the back-side image of the second middle transfer belt are simultaneously formed on both sides of a copy sheet.

Double-sided image forming apparatus and method

An input unit inputs printing data. A detecting unit detects a current temperature of a thermal head which is used to print information associated with the printing data. A memory unit stores, instead of prints, a data packet of the printing data if it is determined that the current temperature of the thermal head provided by the detecting unit results in controlling the thermal head so it is not used for printing out the data packet of the printing data.

Thermal printing system having function for preventing over heating of thermal head

An information printing apparatus that applies predetermined print energy to a printhead to print data received from an external data source, includes a receiver for receiving printing data from the external data source, a detector for detecting a current temperature of the printhead which is used to print information associated with the received printing data and memory for storing the received printing data. A controller controls the information printing apparatus such that when the current temperature of the printhead is below a predetermined threshold temperature the printing data received from the external data source is directly printed without storing the received printing data in memory and when the current temperature of the printhead exceeds the predetermined threshold temperature the print head is prevented from printing out the printing data and the received printing data is stored in the memory means until the current temperature is below the predetermined threshold temperature at which time the stored data is printed.

Thermal printing system having function for preventing over heating of

A heat-sensitive recording method of performing a thermal printing at variable printing time intervals by a thermal head in a facsimile apparatus. The method includes the steps of determining a pulse width corresponding to a thermal head temperature, from a measured resistance of a thermistor measured at a first time interval, on the basis of a relationship between thermal head temperature and pulse width, storing the determined pulse width corresponding to the temperature in a first memory area and storing a recording power pulse width corresponding to the pulse width in a second memory area, and correcting the recording power pulse width on the basis of a relationship between thermistor resistance and thermal head temperature by changing the recording power pulse width at a second time interval by comparing the same with the pulse width, so that a thermal printing is performed in which the recording power pulse width is varied in gradual steps by applying a printing power pulse with the thus corrected pulse width to the thermal head.

Thermal recording method using drive signal pulse widths changed at time

A communication apparatus which replies to a call from a calling terminal and records information being received from the calling terminal for transferring the recorded information to a predetermined destination terminal. The communication apparatus comprises a recording part for recording the information received from the calling information after replying to the call, a memory part for storing a plurality of transfer time period data and a plurality of telephone number data of destination terminals corresponding to the plurality of transfer time period data, and a transferring part for transferring the information to the predetermined destination terminal by reading out the information from the recording part after the information is received from the calling terminal, so that the communication apparatus calls a subject destination terminal with a telephone number data relevant to the transfer time period data stored in the memory part corresponding to the current time when the call is received from the calling terminal, and transfers the information to the subject destination terminal each time the call is received from the calling terminal.

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Isehara, Japan

Takeo Ohashi