Temperature control method of heat developing apparatus and heat developing apparatus

A temperature control method of a heat developing apparatus comprising a heat processing section to conduct heat developing on a heated developing sheet on which a latent image by an exposure is formed, is opened toward outside of an apparatus by an opening and closing motion of an opening and closing cover, which comprises:

• first temperature detecting by a first sensor to be disposed in a vicinity of a conveying path of the heat developing sheet of the heat processing section and to be exposed to an outside of the apparatus when the opening and closing cover is opened;
• second temperature detecting, at the same time with the first temperature detecting by the first sensor, by a second sensor to be arranged in the heat processing section and to be kept unexposed to an outside of the apparatus when the opening and closing cover is opened;
• selecting an optimum combination of a control variable and a control amount from predetermined combinations of control variables and amounts in correspondence with a combination of temperature drop down amounts of the first temperature detection and a result of the second temperature detection after an opening of said opening and closing cover;
• and
• controlling a temperature of the heat processing section based on the optimum combination of control variable and control amount, which is selected, at a time of the start of an apparatus operation.

A heat developing apparatus comprising a heat processing section to heat-develop a heated developing sheet on which a latent image is formed by an exposure, and an opening and closing cover to expose the heat processing section toward an outside of the apparatus, further comprising:

• a first sensor to be disposed in a vicinity of a conveying path of the heat developing sheet of the heat processing section and to be exposed to an outside of the apparatus when the opening and closing cover is opened;
• a second sensor to be arranged in the heat processing section and to be kept unexposed to an outside of the apparatus when the opening and closing cover is opened;
• a memory means to memorize combinations of predetermined control variables and control amounts in correspondence with a combination of temperatures measured with the first sensor and a temperature measured with the second sensor;
• and
• a controlling means to select a combination of an optimum control variable and an optimum control amount from said memory means in correspondence with a combination of temperatures measured with each of the first and the second sensor, and to control a heating of the heat processing section based on the optimum control variable and amount, which is selected, at a time of the start of an apparatus operation.

A heat developing apparatus comprising a heat processing section to heat-develop a heated developing sheet on which a latent image is formed by an exposure, and an opening and closing cover to expose the heat processing section toward an outside of the apparatus, further comprising:

• a first sensor to be disposed in a vicinity of a conveying path of the heat developing sheet of the heat processing section and to be exposed to an outside of the apparatus when the opening and closing cover is opened;
• a second sensor to be arranged in the heat processing section and to be kept unexposed to an outside of the apparatus when the opening and closing cover is opened;
• a memory means to memorize combinations of predetermined control variables and control amounts in correspondence with a combination of a temperature drop down measured with the first sensor and temperatures measured with the second sensor after an opening of said opening and closing cover;
• and
• a controlling means to select a combination of an optimum control variable and an optimum control amount from said memory means in correspondence with a combination of temperatures measured with each of the first and the second sensor, and to control a heating of the heat processing section based on the optimum control variable and amount, which is selected, at a time of the start of an apparatus operation.

A heat developing apparatus comprising a heat processing section to heat-develop a heated developing sheet on which a latent image is formed by an exposure, and an opening and closing cover to expose the heat processing section toward an outside of the apparatus, further comprising:

• a first sensor to be disposed in a vicinity of a conveying path of the heat developing sheet of the heat processing section and to be exposed to an outside of the apparatus when the opening and closing cover is opened;
• a second sensor to be arranged in the heat processing section and to be kept unexposed to an outside of the apparatus when the opening and closing cover is opened;
• a memory means to memorize a function to compute combinations of control amounts for predetermined control variables in correspondence with a combination of a temperature drop down measured with the first sensor and a temperature measured with the second sensor after an opening of said opening and closing cover;
• and
• a controlling means to compute a combination of optimum control amounts for the predetermined combination of control variables with the function memorized in said memory means in correspondence with a combination of temperatures measured with each of the first and the second sensor, and to control a heating of the heat processing section based on the optimum control variable and amount, which is selected, at a time of the start of an apparatus operation.